National Weather Service United States Department of Commerce

Overview

An area of low pressure began to explosively intensify as it moved over the mid-Atlantic on 7 February 2020, with continued rapid strengthening occurring as the low moved northeast towards the Gulf of Maine. A warm front associated with the low pushed through the mid-Atlantic in the pre-dawn hours of 7 February, while a strong cold front approached by late morning. Ahead of the cold front, an unusually warm winter air mass overspread the mid-Atlantic. A small amount of surface-based instability developed ahead of the cold front. However, exceptionally strong wind fields were present ahead of the rapidly deepening low. Combined with the strong dynamic forcing and lift associated with the low, a line of convection developed over the mid-Atlantic early on 7 February and led to an anomalous wintertime severe weather outbreak. Storms were low topped and produced limited lightning, but acted to transport downward the strong winds present just above the surface. Widespread damaging wind gusts occurred as the storms moved through. In addition, an area of rotation within the squall line produced a brief tornado in Cecil County, MD. A couple of other tornadoes had previously formed further southwest in the WFO Baltimore/Washington CWA. The line of storms produced severe wind gusts all the way to the coast of New Jersey, before rapidly weakening as it moved further northeast and away from the already limited instability.
 

Image
Composite radar loop at one hour intervals of the 7 February 2020 squall line.

Meteorological Environment/Setup

Synoptic Overview at 12z 7 Feb 2020 (courtesy of SPC)

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Figure 1: 250-mb analysis Figure 2: 300-mb analysis Figure 3: 500-mb analysis
 
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Figure 4: 700-mb analysis Figure 5: 850-mb analysis Figure 6: 925-mb analysis

Synoptic Overview at 00z 8 Feb 2020 (courtesy of SPC)

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Figure 7: 250-mb analysis Figure 8: 300-mb analysis Figure 9: 500-mb analysis
 
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Figure 10: 700-mb analysis Figure 11: 850-mb analysis Figure 12: 925-mb analysis
 

Surface Maps (courtesy of WPC)

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Figure 13: 12z surface map Figure 14: 15z surface map Figure 15: 18z surface map
 
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Figure 16: 21z surface map Figure 17: 00z surface map Figure 18: 03z surface map

Observed Soundings
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Figure 19: 12z Wallops Island, VA sounding Figure 20: 12z Sterling, VA sounding Figure 21: 12z Islip, NY sounding
Environment Environment Environment
Figure 22: 00z Wallops Island, VA sounding Figure 23: 00z Sterling, VA sounding Figure 24: 00z Islip, NY sounding

Preliminary Storm Reports

prelimreports prelimreports prelimreports
Figure 1: National Preliminary Reports 12z 7 Feb 2020 to 12z 8 Feb 2020 Figure 2: Zoomed Preliminary Reports for the same period. Figure 3: Prelim Reports vs. 0600z SPC Convective Outlook

Watches, Warnings, and Advisories Issued

Click here for a county warning area based plot of local storm reports and warnings/advisories issued for the 7 Feb 2020 event.

Preliminary Local Storm Reports

 

NWUS51 KPHI 072057
LSRPHI

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
357 PM EST FRI FEB 7 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0906 AM     TSTM WND DMG     1 W WILLOWDALE          39.87N 75.73W
02/07/2020                   CHESTER            PA   COUNTY OFFICIAL  

            DOWNED TREE ON WIRES NEAR THE INTERSECTION 
            OF WOLLASTON ROAD AND STREET ROAD. STRONG 
            GUSTS WELL IN ADVANCE OF PRECIPITATION. 

0912 AM     TSTM WND DMG     2 S KENNETT SQUARE      39.81N 75.71W
02/07/2020                   CHESTER            PA   COUNTY OFFICIAL  

            DOWNED TREE NEAR THE INTERSECTION OF KAOLIN 
            ROAD AND ROUND HILL ROAD. STRONG WINDS WELL 
            IN ADVANCE OF PRECIPITATION. 

0922 AM     TSTM WND DMG     1 NNE BRANDAMORE        40.06N 75.81W
02/07/2020                   CHESTER            PA   PUBLIC           

            SEVERAL POWER LINES DOWN NEAR MANOR ROAD AND 
            HORSESHOE PIKE. STRONG WINDS WELL IN ADVANCE 
            OF PRECIPITATION. 

0923 AM     TSTM WND DMG     2 SE PORT DEPOSIT       39.59N 76.07W
02/07/2020                   CECIL              MD   DEPT OF HIGHWAYS 

            WIND BLOWN DEBRIS IN THE ROAD ON I-95 NORTH 
            OF EXIT 93. TIME ESTIMATED FROM RADAR. 

0924 AM     TSTM WND DMG     ROCK HALL               39.14N 76.24W
02/07/2020                   KENT               MD   FIRE DEPT/RESCUE 

            REPORTS OF DOWNED TREES IN THE AREA OF ROCK 
            HALL ROAD. TIME ESTIMATED FROM RADAR. 

0926 AM     TSTM WND DMG     2 SW SPRING TWP         40.30N 76.03W
02/07/2020                   BERKS              PA   UTILITY COMPANY  

            DOWNED TREE ON WIRES. TIME ESTIMATED FROM 
            RADAR. 

0928 AM     TSTM WND DMG     1 SE LINCOLN UNIVERSITY 39.80N 75.91W
02/07/2020                   CHESTER            PA   UTILITY COMPANY  

            DOWNED POWER LINES FROM STRONG WINDS NEAR 
            ELKDALE ROAD. TIME ESTIMATED FROM RADAR. 

0930 AM     TSTM WND DMG     1 SSW RIDGELY           38.94N 75.89W
02/07/2020                   CAROLINE           MD   DEPT OF HIGHWAYS 

            DOWNED UTILITY ON STATE HIGHWAY 480 AT 
            SUNSET BOULEVARD. TIME ESTIMATED FROM RADAR. 

0930 AM     TSTM WND DMG     SPRING TWP              40.32N 76.01W
02/07/2020                   BERKS              PA   FIRE DEPT/RESCUE 

            SEVERAL TREES AND POWER LINES DOWN. 

0930 AM     TSTM WND DMG     1 NNW HIGHLAND TWP.     39.94N 75.87W
02/07/2020                   CHESTER            PA   COUNTY OFFICIAL  

            DOWNED TREE AND WIRES NEAR THE INTERSECTION 
            OF FIVE POINTS ROAD AND GLENROSE ROAD. TIME 
            ESTIMATED FROM RADAR. 

0930 AM     TSTM WND DMG     1 NNW DENTON            38.90N 75.84W
02/07/2020                   CAROLINE           MD   EMERGENCY MNGR   

            SIGNIFICANT STRUCTURAL DAMAGE TO A BARN. 
            TIME ESTIMATED FROM RADAR. 

0932 AM     TSTM WND DMG     LORANE                  40.29N 75.85W
02/07/2020                   BERKS              PA   FIRE DEPT/RESCUE 

            DOWNED TREE BLOCKING THE ROAD NEAR THE 
            INTERSECTION OF LORANE ROAD AND AHRENS ROAD. 
            TIME ESTIMATED FROM RADAR. 

0935 AM     TSTM WND DMG     2 NNW HAZLETTVILLE      39.15N 75.66W
02/07/2020                   KENT               DE   DEPT OF HIGHWAYS 

            HALLTOWN RD CLOSED AT BRITTANY LN DUE TO 
            WIRES DOWN IN THE ROADWAY. TIME ESTIMATED 
            FROM RADAR. 

0939 AM     TORNADO          1 SSW BARKSDALE         39.65N 75.82W
02/07/2020                   CECIL              MD   NWS STORM SURVEY 

            AN EF-1 TORNADO BRIEFLY TOUCHED DOWN NEAR 
            THE ELK MILLS QUARRY IN CECIL COUNTY, 
            MARYLAND. THE TORNADO UPROOTED AND SNAPPED 
            NUMEROUS SOFTWOOD TREES JUST EAST AND NORTH 
            OF THE QUARRY NEAR THE INTERSECTION OF ELK 
            MILLS ROAD, APPLETON ROAD, AND FLETCHWOOD 
            ROAD. A FEW HARDWOOD AND SOFTWOOD TREES WERE 
            UPROOTED ON NEARBY RESIDENTIAL PROPERTIES. 
            THE TORNADO CONTINUED EAST ALONG FLETCHWOOD 
            ROAD PASSING OVER SOME INDUSTRIAL BUILDINGS 
            TOWARD THE PINE HILL APARTMENT COMPLEX. AT 
            THE APARTMENT COMPLEX, NUMEROUS PINE TREES 
            WERE UPROOTED OR SNAPPED. THE TORNADO THEN 
            DISSIPATED AS IT CONTINUED EAST AWAY FROM 
            THE APARTMENT COMPLEX. THANKFULLY, NO 
            SIGNIFICANT STRUCTURAL DAMAGE OCCURRED AND 
            NO INJURIES OR FATALITIES OCCURRED AS A 
            RESULT OF THIS TORNADO.

0940 AM     TSTM WND DMG     BARKSDALE               39.67N 75.81W
02/07/2020                   CECIL              MD   911 CALL CENTER  

            SEVERAL REPORTS OF DOWNED TREES. TIME 
            ESTIMATED FROM RADAR. 

0940 AM     TSTM WND GST     CLAYTON                 39.29N 75.63W
02/07/2020  M58 MPH          KENT               DE   MESONET          

             

0945 AM     TSTM WND DMG     3 WNW FELTON            39.02N 75.62W
02/07/2020                   KENT               DE   UTILITY COMPANY  

            DOWNED TREE ON WIRES. 

0945 AM     TSTM WND DMG     EASTBURN HEIGHTS        39.70N 75.68W
02/07/2020                   NEW CASTLE         DE   TRAINED SPOTTER  

            PHOTO OF A TREE DOWN ONTO A DECK, DESTROYING 
            PART OF A FENCE. TIME ESTIMATED FROM RADAR. 

0945 AM     TSTM WND DMG     1 SW MARSHALLTON        39.72N 75.66W
02/07/2020                   NEW CASTLE         DE   PUBLIC           

            MULTIPLE TREES DOWN ON TELEGRAPH RD. TIME 
            ESTIMATED FROM RADAR. 

0945 AM     TSTM WND DMG     WYOMING                 39.12N 75.56W
02/07/2020                   KENT               DE   TRAINED SPOTTER  

            LOSS OF STOCKADE FENCING. TIME ESTIMATED 
            FROM RADAR. 

0946 AM     TSTM WND DMG     2 WSW EASTBURN HEIGHTS  39.70N 75.71W
02/07/2020                   NEW CASTLE         DE   NEWSPAPER        

            DOWNED TREE INTO A HOUSE ON BREWSTER DRIVE. 
            TIME ESTIMATED FROM RADAR. 

0946 AM     TSTM WND DMG     2 ENE KENNETT SQUARE    39.86N 75.68W
02/07/2020                   CHESTER            PA   UTILITY COMPANY  

            DOWNED POWER LINES FROM STRONG WINDS NEAR 
            CANTERBURY DRIVE. TIME ESTIMATED FROM RADAR. 

0946 AM     TSTM WND DMG     2 NE HAZLETTVILLE       39.14N 75.62W
02/07/2020                   KENT               DE   UTILITY COMPANY  

            POWER POLE SNAPPED FROM STRONG WIND. TIME 
            ESTIMATED FROM RADAR. 

0948 AM     TSTM WND DMG     2 WSW HARRINGTON        38.91N 75.61W
02/07/2020                   KENT               DE   UTILITY COMPANY  

            DOWNED POWER LINES FROM STRONG WINDS. TIME 
            ESTIMATED FROM RADAR. 

0948 AM     TSTM WND DMG     3 NNE UPPER MACUNGIE TW 40.61N 75.59W
02/07/2020                   LEHIGH             PA   UTILITY COMPANY  

            DOWNED TREE ON WIRES. TIME ESTIMATED FROM 
            RADAR. 

0950 AM     TSTM WND DMG     1 ENE EASTBURN HEIGHTS  39.71N 75.67W
02/07/2020                   NEW CASTLE         DE   NEWSPAPER        

            DOWNED TREES ON CAR AND RESIDENCES IN MURRAY 
            MANOR. TIME ESTIMATED FROM RADAR. 

0950 AM     TSTM WND DMG     1 W STANTON             39.72N 75.66W
02/07/2020                   NEW CASTLE         DE   FIRE DEPT/RESCUE 

            SEVERAL REPORTS OF TREES AND WIRES DOWN NEAR 
            TELEGRAPH ROAD, INCLUDING A TREE INTO A 
            HOUSE. TIME ESTIMATED FROM RADAR. 

0950 AM     TSTM WND DMG     PUGHTOWN                40.17N 75.67W
02/07/2020                   CHESTER            PA   UTILITY COMPANY  

            SEVERAL REPORTS OF TREES AND POWER LINES 
            DOWN NEAR PUGHTOWN, ROYERSFORD, 
            PHOENIXVILLE, AND ST. PETERS. TIME ESTIMATED 
            FROM RADAR. 

0951 AM     TSTM WND DMG     1 N EAST BRADFORD TWP   39.97N 75.64W
02/07/2020                   CHESTER            PA   PUBLIC           

            DOWNED WIRES NEAR COPELAND SCHOOL ROAD AND 
            KENMARA DRIVE. 

0951 AM     TSTM WND DMG     2 WSW FELTON            39.00N 75.62W
02/07/2020                   KENT               DE   UTILITY COMPANY  

            DOWNED TREE AND WIRES. TIME ESTIMATED FROM 
            RADAR. 

0952 AM     TSTM WND DMG     HARRINGTON              38.92N 75.58W
02/07/2020                   KENT               DE   PUBLIC           

            ROOF BLOWN OFF A TRAILER. TIME ESTIMATED 
            FROM RADAR. 

0952 AM     TSTM WND GST     3 WSW MOUNT PLEASANT    39.49N 75.76W
02/07/2020  M61 MPH          NEW CASTLE         DE   PUBLIC           

             

0952 AM     TSTM WND DMG     WESTFIELD               39.72N 75.64W
02/07/2020                   NEW CASTLE         DE   NEWSPAPER        

            TREE INTO A HOUSE ON REDWOOD AVENUE. TIME 
            ESTIMATED FROM RADAR. 

0952 AM     TSTM WND DMG     4 WNW SEAFORD           38.66N 75.68W
02/07/2020                   SUSSEX             DE   UTILITY COMPANY  

            DOWNED POWER LINES FROM STRONG WINDS. TIME 
            ESTIMATED FROM RADAR. 

0954 AM     TSTM WND DMG     1 NE BIRMINGHAM TWP     39.92N 75.58W
02/07/2020                   CHESTER            PA   UTILITY COMPANY  

            DOWNED POWER LINES FROM STRONG WINDS NEAR 
            BRIDLEWOOD BOULEVARD. TIME ESTIMATED FROM 
            RADAR. 

0954 AM     TSTM WND DMG     1 ESE TYBROOK           39.75N 75.62W
02/07/2020                   NEW CASTLE         DE   FIRE DEPT/RESCUE 

            SEVERAL REPORTS OF DOWNED TREES AND WIRES. 
            TIME ESTIMATED FROM RADAR. 

0955 AM     TSTM WND GST     1 NE MAGNOLIA           39.09N 75.46W
02/07/2020  M66 MPH          KENT               DE   MESONET          

             

0956 AM     TSTM WND DMG     2 SW MAGNOLIA           39.06N 75.50W
02/07/2020                   KENT               DE   UTILITY COMPANY  

            DOWNED TREE AND POWER POLE. TIME ESTIMATED 
            FROM RADAR. 

1000 AM     TSTM WND GST     SHELLBURNE              39.78N 75.51W
02/07/2020  M59 MPH          NEW CASTLE         DE   MESONET          

             

1000 AM     TSTM WND GST     3 E HIGHLAND ACRES      39.13N 75.47W
02/07/2020  M59 MPH          KENT               DE   ASOS             

             

1002 AM     TSTM WND DMG     ASHBOURNE HILLS         39.80N 75.47W
02/07/2020                   NEW CASTLE         DE   FIRE DEPT/RESCUE 

            SEVERAL REPORTS OF DOWNED TREES IN THE AREA. 
            TIME ESTIMATED FROM RADAR. 

1002 AM     TSTM WND DMG     1 ENE ASHBOURNE HILLS   39.81N 75.46W
02/07/2020                   NEW CASTLE         DE   NEWSPAPER        

            DOWNED TREE BLOCKING INTERSTATE 495 NEAR THE 
            PENNSYLVANIA STATE LINE. TIME ESTIMATED FROM 
            RADAR. 

1002 AM     TSTM WND DMG     1 N TRAINER             39.84N 75.40W
02/07/2020                   DELAWARE           PA   DEPT OF HIGHWAYS 

            TREE DOWN ON I-95. TIME ESTIMATED FROM 
            RADAR. 

1004 AM     TSTM WND DMG     2 SSW SKIPPACK          40.19N 75.40W
02/07/2020                   MONTGOMERY         PA   UTILITY COMPANY  

            SEVERAL REPORTS OF POWER LINES DOWN NEAR 
            EVANSBURG STATE PARK. TIME ESTIMATED FROM 
            RADAR. 

1004 AM     TSTM WND DMG     4 E SEAFORD             38.65N 75.54W
02/07/2020                   SUSSEX             DE   UTILITY COMPANY  

            DOWNED TREES AND WIRES IN THE AREA. TIME 
            ESTIMATED FROM RADAR. 

1005 AM     TSTM WND GST     2 SSE GREENWOOD         38.78N 75.58W
02/07/2020  M64 MPH          SUSSEX             DE   MESONET          

             

1006 AM     TSTM WND DMG     1 NNW ASTON TWP.        39.88N 75.43W
02/07/2020                   DELAWARE           PA   LAW ENFORCEMENT  

            DOWNED TREES CLOSED PENNELL ROAD BETWEEN 
            MOUNT ALVERSON AND GLENDALE. TIME ESTIMATED 
            FROM RADAR. 

1006 AM     TSTM WND DMG     5 SSW ELLENDALE         38.74N 75.45W
02/07/2020                   SUSSEX             DE   UTILITY COMPANY  

            DOWNED TREES AND WIRES IN THE AREA. TIME 
            ESTIMATED FROM RADAR. 

1006 AM     TSTM WND DMG     LOWER CHICHESTER TWP.   39.82N 75.43W
02/07/2020                   DELAWARE           PA   PUBLIC           

            ROOF BLOWN OFF A BUILDING. TIME ESTIMATED 
            FROM RADAR. 

1006 AM     TSTM WND DMG     1 W CHESTER TWP         39.84N 75.40W
02/07/2020                   DELAWARE           PA   COUNTY OFFICIAL  

            DOWNED TREE AND WIRES NEAR FORWOOD STREET. 
            TIME ESTIMATED FROM RADAR. 

1007 AM     TSTM WND DMG     2 SE KULPSVILLE         40.23N 75.32W
02/07/2020                   MONTGOMERY         PA   TRAINED SPOTTER  

            SEVERAL LARGE TREES SNAPPED OR UPROOTED NEAR 
            THE BORDER OF UPPER GWYNEDD AND TOWAMENCIN 
            TWPS. MULTIPLE PROPERTIES DAMAGED DUE TO 
            DOWNED TREES AND LIMBS. TIME ESTIMATED FROM 
            RADAR. 

1007 AM     TSTM WND DMG     1 N BROOMALL            39.99N 75.36W
02/07/2020                   DELAWARE           PA   DEPT OF HIGHWAYS 

            DOWNED UTILITY ON PA-320. TIME ESTIMATED 
            FROM RADAR. 

1008 AM     TSTM WND DMG     1 NNW CHESTER TWP       39.85N 75.39W
02/07/2020                   DELAWARE           PA   UTILITY COMPANY  

            DOWNED TREES AND WIRES NEAR INCINERATOR 
            ROAD. TIME ESTIMATED FROM RADAR. 

1008 AM     TSTM WND DMG     LANSDALE                40.24N 75.28W
02/07/2020                   MONTGOMERY         PA   NEWSPAPER        

            TREES AND POWER LINES DOWN IN LANSDALE. TIME 
            ESTIMATED FROM RADAR. 

1009 AM     TSTM WND DMG     MILTON                  38.78N 75.31W
02/07/2020                   SUSSEX             DE   PUBLIC           

            2 LARGE TREES DOWN AT A RESIDENCE. REPORT 
            VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR. 

1010 AM     TSTM WND DMG     4 S MILLVILLE           38.49N 75.13W
02/07/2020                   SUSSEX             DE   UTILITY COMPANY  

            TREE INTO A HOUSE. TIME ESTIMATED FROM 
            RADAR. 

1010 AM     TSTM WND DMG     ROXANA                  38.50N 75.17W
02/07/2020                   SUSSEX             DE   LAW ENFORCEMENT  

            TRAILER SPLIT IN HALF BY FALLEN TREE. TIME 
            ESTIMATED FROM RADAR. 

1010 AM     TSTM WND DMG     UPPER GWYNEDD           40.21N 75.29W
02/07/2020                   MONTGOMERY         PA   PUBLIC           

            REPORTS OVER SOCIAL MEDIA WITH PHOTOS OF 
            MULTIPLE TREES DOWN. TIME ESTIMATED FROM 
            RADAR. 

1010 AM     TSTM WND DMG     1 W EDDYSTONE           39.86N 75.36W
02/07/2020                   DELAWARE           PA   COUNTY OFFICIAL  

            DOWNED TELEPHONE POLE FROM STRONG WINDS. 
            TIME ESTIMATED FROM RADAR. 

1010 AM     TSTM WND DMG     1 E MILLSBORO           38.59N 75.29W
02/07/2020                   SUSSEX             DE   LAW ENFORCEMENT  

            TREE ON ROOF IN RIVER ROAD. TIME ESTIMATED 
            FROM RADAR. 

1012 AM     TSTM WND DMG     HARRISON TWP            39.76N 75.26W
02/07/2020                   GLOUCESTER         NJ   PUBLIC           

            MPING REPORT. 

1012 AM     TSTM WND DMG     1 ESE DELPS             40.80N 75.44W
02/07/2020                   NORTHAMPTON        PA   UTILITY COMPANY  

            DOWNED TREE ON WIRES. TIME ESTIMATED FROM 
            RADAR. 

1012 AM     TSTM WND DMG     1 NW GEORGETOWN         38.70N 75.40W
02/07/2020                   SUSSEX             DE   PUBLIC           

            DAMAGE TO BILLBOARDS, POWER LINES, AND 
            TRAFFIC SIGNALS FROM STRONG WINDS IN THE 
            GEORGETOWN AREA. TIME ESTIMATED FROM RADAR. 

1013 AM     TSTM WND DMG     MILLVILLE               39.40N 75.04W
02/07/2020                   CUMBERLAND         NJ   BROADCAST MEDIA  

            TREES DOWN AND FENCES BLOWN OVER NEAR 
            MILLVILLE. TIME ESTIMATED FROM RADAR. 

1015 AM     TSTM WND GST     3 ENE SELBYVILLE        38.48N 75.18W
02/07/2020  M63 MPH          SUSSEX             DE   MESONET          

             

1015 AM     TSTM WND GST     FORTESCUE               39.24N 75.18W
02/07/2020  M60 MPH          CUMBERLAND         NJ   MESONET          

             

1015 AM     TSTM WND DMG     2 NW STOCKLEY           38.66N 75.35W
02/07/2020                   SUSSEX             DE   LAW ENFORCEMENT  

            TREE FELL ON STRUCTURE, TIME ESTIMATED FROM 
            RADAR. 

1015 AM     TSTM WND DMG     DAGSBORO                38.55N 75.25W
02/07/2020                   SUSSEX             DE   LAW ENFORCEMENT  

            POLES DOWN ON MAIN STREET, TIME ESTIMATED 
            FROM RADAR. 

1016 AM     TSTM WND DMG     1 NE SHARON HILL        39.91N 75.26W
02/07/2020                   DELAWARE           PA   COUNTY OFFICIAL  

            DOWNED TREES ON VEHICLES NEAR POPLAR STREET 
            AND WOODLAND TERRACE. TIME ESTIMATED FROM 
            RADAR. 

1017 AM     TSTM WND GST     PHILADELPHIA INTERNATIO 39.88N 75.23W
02/07/2020  M49 MPH          PHILADELPHIA       PA   ASOS             

            KPHL ASOS. 

1018 AM     TSTM WND DMG     1 W HORSHAM TWP         40.21N 75.21W
02/07/2020                   MONTGOMERY         PA   COUNTY OFFICIAL  

            DOWNED TREE NEAR THE INTERSECTION OF CEDAR 
            HILL ROAD AND STONGS LANE. TIME ESTIMATED 
            FROM RADAR. 

1018 AM     TSTM WND DMG     3 WSW MALAGA            39.56N 75.10W
02/07/2020                   SALEM              NJ   UTILITY COMPANY  

            DOWNED TREES AND WIRES NEAR CROW POND ROAD. 
            TIME ESTIMATED FROM RADAR. 

1018 AM     TSTM WND DMG     1 NNW PHILADELPHIA INTE 39.88N 75.23W
02/07/2020                   PHILADELPHIA       PA   UTILITY COMPANY  

            DOWNED POWER LINES FROM STRONG WINDS NEAR 
            PROVINCE ISLAND. TIME ESTIMATED FROM RADAR. 

1020 AM     TSTM WND DMG     1 SE DAGSBORO           38.54N 75.23W
02/07/2020                   SUSSEX             DE   LAW ENFORCEMENT  

            TREE DOWN ON STRUCTURE, TIME ESTIMATED FROM 
            RADAR. 

1020 AM     TSTM WND DMG     1 NNW MANTUA            39.81N 75.18W
02/07/2020                   GLOUCESTER         NJ   NWS EMPLOYEE     

            UPROOTED TREE ON THE NEW JERSEY TURNPIKE. 
            TIME ESTIMATED FROM RADAR. 

1020 AM     TSTM WND GST     4 S INDIAN BEACH        38.63N 75.07W
02/07/2020  M59 MPH          SUSSEX             DE   MESONET          

             

1026 AM     TSTM WND GST     2 WNW LEWES             38.79N 75.16W
02/07/2020  M70 MPH          SUSSEX             DE   MESONET          

            WEATHERFLOW SITE XLEW. 

1026 AM     TSTM WND DMG     BUCKINGHAM TWP          40.33N 75.06W
02/07/2020                   BUCKS              PA   UTILITY COMPANY  

            SEVERAL REPORTS OF POWER OUTAGES IN 
            BUCKINGHAM, PINEVILLE, AND LAHASKA AREAS. 
            TIME ESTIMATED FROM RADAR. 

1026 AM     TSTM WND DMG     1 WSW SUMMERDALE        40.03N 75.11W
02/07/2020                   PHILADELPHIA       PA   UTILITY COMPANY  

            DOWNED POWER LINES FROM STRONG WINDS NEAR 
            WHITAKER AVENUE. TIME ESTIMATED FROM RADAR. 

1028 AM     TSTM WND DMG     GLOUCESTER CITY         39.89N 75.12W
02/07/2020                   CAMDEN             NJ   UTILITY COMPANY  

            DOWNED TREES AND POWER LINES FROM STRONG 
            WINDS. TIME ESTIMATED FROM RADAR. 

1028 AM     TSTM WND DMG     4 E ESTELL MANOR        39.37N 74.76W
02/07/2020                   ATLANTIC           NJ   DEPT OF HIGHWAYS 

            DOWNED TREE AND WIRES ON NJ-50 SOUTHBOUND 
            NORTH OF HONEST JOHN RD. ALL LANES CLOSED. 
            TIME ESTIMATED FROM RADAR. 

1028 AM     TSTM WND DMG     1 E ABINGTON            40.12N 75.11W
02/07/2020                   MONTGOMERY         PA   COUNTY OFFICIAL  

            DOWNED TREE BLOCKING THE ROAD NEAR THE 
            INTERSECTION OF HUNTINGDON ROAD AND EDMUND 
            ROAD. 

1030 AM     TSTM WND GST     CAPE MAY HARBOR         38.95N 74.89W
02/07/2020  M73 MPH          CAPE MAY           NJ   MESONET          

            CAPN4 HADS GAUGE. 

1030 AM     TSTM WND DMG     MAYS LANDING            39.45N 74.73W
02/07/2020                   ATLANTIC           NJ   PUBLIC           

            REPORT VIA SOCIAL MEDIA WITH PHOTOS. DAMAGE 
            TO A CARPORT AND FENCING. 

1030 AM     TSTM WND DMG     NEWTOWN                 40.23N 74.94W
02/07/2020                   BUCKS              PA   PUBLIC           

            TREE DOWN IN NEWTOWN. TIME ESTIMATED FROM 
            RADAR. 

1030 AM     TSTM WND DMG     VILLAS                  39.03N 74.93W
02/07/2020                   CAPE MAY           NJ   AMATEUR RADIO    

            TREE DOWN ON A HOUSE ON PACIFIC AVE. 

1030 AM     TSTM WND DMG     HAMMONTON               39.64N 74.80W
02/07/2020                   ATLANTIC           NJ   BROADCAST MEDIA  

            LARGE TREE DOWN ONTO POWER LINES ACROSS 
            CENTRAL AVE. REPORT VIA SOCIAL MEDIA WITH A 
            PHOTO. TIME ESTIMATED FROM RADAR. 

1032 AM     TSTM WND DMG     1 NNW TINICUM TWP       40.48N 75.11W
02/07/2020                   BUCKS              PA   UTILITY COMPANY  

            DOWNED TREES FROM STRONG WINDS. TIME 
            ESTIMATED FROM RADAR. 

1032 AM     TSTM WND DMG     1 W GREEN CREEK         39.04N 74.92W
02/07/2020                   CAPE MAY           NJ   AMATEUR RADIO    

            WIRES DOWN ON LAFAYETTE ST. 

1032 AM     TSTM WND DMG     SOMERTON                40.12N 75.01W
02/07/2020                   PHILADELPHIA       PA   UTILITY COMPANY  

            SEVERAL REPORTS OF POWER LINES DOWN NEAR 
            SOMERTON, BUSTLETON, AND HUNTINGDON VALLEY. 
            TIME ESTIMATED FROM RADAR. 

1033 AM     TSTM WND DMG     UPPER TWP               39.26N 74.67W
02/07/2020                   CAPE MAY           NJ   PUBLIC           

            REPORT OF A TREE DOWN ACROSS ROUTE 9 AND 
            TRAFFIC LIGHTS DOWN ON CARS IN UPPER TWP. 
            TIME ESTIMATED FROM RADAR. 

1034 AM     TSTM WND DMG     1 SSW WEST HADDONFIELD  39.89N 75.05W
02/07/2020                   CAMDEN             NJ   UTILITY COMPANY  

            DOWNED TREE ON WIRES NEAR KNOLL TOP LANE. 
            TIME ESTIMATED FROM RADAR. 

1035 AM     TSTM WND DMG     1 S MOORESTOWN          39.96N 74.94W
02/07/2020                   BURLINGTON         NJ   DEPT OF HIGHWAYS 

            TRAFFIC SIGNAL DOWN ON NJ-38 WESTBOUND EAST 
            OF FELLOWSHIP RD. TIME ESTIMATED FROM RADAR. 

1036 AM     TSTM WND DMG     1 S SERGEANTSVILLE      40.43N 74.94W
02/07/2020                   HUNTERDON          NJ   UTILITY COMPANY  

            DOWNED TREES AND WIRES NEAR THE INTERSECTION 
            OF SANDY RIDGE ROAD AND RITTENHOUSE ROAD. 
            TIME ESTIMATED FROM RADAR. 

1038 AM     TSTM WND DMG     1 NW MEDFORD TWP.       39.91N 74.83W
02/07/2020                   BURLINGTON         NJ   PUBLIC           

            REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; 
            SHINGLES BLOWN OFF. 

1038 AM     TSTM WND DMG     1 SE LAMBERTVILLE       40.36N 74.94W
02/07/2020                   HUNTERDON          NJ   UTILITY COMPANY  

            DOWNED TREE AND WIRES NEAR LINCOLN AVENUE 
            AND STUDDIFORD STREET. TIME ESTIMATED FROM 
            RADAR. 

1039 AM     TSTM WND GST     2 E BURLINGTON          40.08N 74.82W
02/07/2020  M52 MPH          BURLINGTON         NJ   NWS EMPLOYEE     

            TIME ESTIMATED FROM RADAR. 

1040 AM     TSTM WND GST     1 NNW SEA ISLE CITY     39.17N 74.70W
02/07/2020  M61 MPH          ANZ453             NJ   MESONET          

            WEATHERFLOW SENSOR. 

1040 AM     TSTM WND DMG     2 NW WRIGHTSTOWN        40.06N 74.65W
02/07/2020                   BURLINGTON         NJ   DEPT OF HIGHWAYS 

            DOWNED TREE ON NJ-68 SOUTHBOUND. ALL LANES 
            CLOSED AND DETOURED. TIME ESTIMATED FROM 
            RADAR. 

1040 AM     TSTM WND GST     2 SW RANCOCAS           39.98N 74.90W
02/07/2020  M61 MPH          BURLINGTON         NJ   MESONET          

            NJWXNET SENSOR. 

1040 AM     TSTM WND GST     4 SE SAND BROOK         40.43N 74.87W
02/07/2020  M54 MPH          HUNTERDON          NJ   PUBLIC           

            TIME ESTIMATED FROM RADAR. SOME SMALL TREE 
            LIMBS DOWN. 

1040 AM     TSTM WND DMG     CROYDON                 40.09N 74.90W
02/07/2020                   BUCKS              PA   UTILITY COMPANY  

            A FEW REPORTS OF POWER LINES DOWN FROM 
            STRONG WINDS IN THE CROYDON AREA. TIME 
            ESTIMATED FROM RADAR. 

1040 AM     TSTM WND DMG     1 S MOORESTOWN          39.96N 74.94W
02/07/2020                   BURLINGTON         NJ   DEPT OF HIGHWAYS 

            DOWNED TRAFFIC SIGNAL FROM STRONG WINDS. 
            TIME ESTIMATED FROM RADAR. 

1042 AM     TSTM WND DMG     2 WNW COLUMBUS          40.09N 74.75W
02/07/2020                   BURLINGTON         NJ   DEPT OF HIGHWAYS 

            DOWNED TREE ON I-295 SOUTHBOUND NORTH OF 
            EXIT 52. TIME ESTIMATED FROM RADAR. 

1042 AM     TSTM WND GST     MERCER COUNTY AIRPORT   40.28N 74.82W
02/07/2020  M64 MPH          MERCER             NJ   ASOS             

            KTTN ASOS. 

1042 AM     TSTM WND DMG     NEWARK                  39.68N 75.76W
02/07/2020                   NEW CASTLE         DE   PUBLIC           

            SEVERAL REPORTS OF POWER LINES DOWN IN 
            NEWARK. 

1043 AM     TSTM WND DMG     2 N PENNINGTON          40.36N 74.80W
02/07/2020                   MERCER             NJ   DEPT OF HIGHWAYS 

            DOWNED TREE ON NJ 31 BOTH DIRECTIONS NORTH 
            OF CR-612. ALL LANES CLOSED AND DETOURED. 
            TIME ESTIMATED FROM RADAR. 

1044 AM     TSTM WND DMG     2 W MCPHERSON           40.61N 74.88W
02/07/2020                   HUNTERDON          NJ   DEPT OF HIGHWAYS 

            DOWNED TREE ON NJ-31 NORTHBOUND NORTH OF CR 
            623. TIME ESTIMATED FROM RADAR. 

1046 AM     TSTM WND DMG     2 SW PORT REPUBLIC      39.52N 74.52W
02/07/2020                   ATLANTIC           NJ   PUBLIC           

            DOWNED TREE LIMBS AND POWER LINES. MPING 
            REPORT. TIME ESTIMATED FROM RADAR. 

1048 AM     TSTM WND DMG     1 SSW YARDVILLE         40.16N 74.68W
02/07/2020                   BURLINGTON         NJ   PUBLIC           

            DOWNED TREE LIMBS FROM STRONG WINDS. MPING 
            REPORT. TIME ESTIMATED FROM RADAR. 

1050 AM     TSTM WND GST     INDIAN BEACH            38.68N 75.08W
02/07/2020  M59 MPH          SUSSEX             DE   MESONET          

            WEATHERFLOW SENSOR. 

1050 AM     TSTM WND DMG     GOSHEN                  39.14N 74.85W
02/07/2020                   CAPE MAY           NJ   AMATEUR RADIO    

            TREE DOWN ACROSS THE ROAD ON GOSHEN RD. 

1054 AM     TSTM WND DMG     2 W NORTH PRINCETON     40.37N 74.69W
02/07/2020                   MERCER             NJ   LAW ENFORCEMENT  

            GREAT ROAD CLOSED BETWEEN STUART ROAD AND 
            PRINCETON DAY SCHOOL FROM A POLE AND WIRES 
            DOWN. TIME ESTIMATED FROM RADAR. 

1056 AM     TSTM WND DMG     1 SSE ROCKY HILL        40.38N 74.62W
02/07/2020                   MERCER             NJ   UTILITY COMPANY  

            DOWNED TREES AND WIRES NEAR WINDROW DRIVE. 
            TIME ESTIMATED FROM RADAR. 

1057 AM     TSTM WND DMG     3 S BEDMINSTER TWP      40.64N 74.64W
02/07/2020                   SOMERSET           NJ   DEPT OF HIGHWAYS 

            DOWNED TREE ON I-78 EASTBOUND EAST OF EXIT 
            29. TIME ESTIMATED FROM RADAR. 

1100 AM     TSTM WND GST     5 SE MYSTIC ISLAND      39.51N 74.32W
02/07/2020  M60 MPH          OCEAN              NJ   MESONET          

            HADS SENSOR. 

1101 AM     TSTM WND DMG     2 NW WATCHUNG           40.65N 74.48W
02/07/2020                   SOMERSET           NJ   PUBLIC           

            MPING REPORT OF 3 INCH TREE LIMBS OR POWER 
            POLES SNAPPED. 

1102 AM     TSTM WND DMG     2 N KENDALL PARK        40.46N 74.54W
02/07/2020                   SOMERSET           NJ   UTILITY COMPANY  

            DOWNED TREE ON WIRES FROM STRONG WINDS. TIME 
            ESTIMATED FROM RADAR. 

1102 AM     TSTM WND DMG     1 WNW MANVILLE          40.55N 74.60W
02/07/2020                   SOMERSET           NJ   UTILITY COMPANY  

            DOWNED TREE AND WIRES NEAR THE INTERSECTION 
            OF DUKES PARKWAY AND DICKERSON ROAD. TIME 
            ESTIMATED FROM RADAR. 

1102 AM     TSTM WND GST     4 SE MYSTIC ISLAND      39.52N 74.32W
02/07/2020  M65 MPH          OCEAN              NJ   MESONET          

            WEATHERFLOW SITE XTUK. 

1106 AM     TSTM WND DMG     2 NW WATCHUNG           40.65N 74.48W
02/07/2020                   SOMERSET           NJ   PUBLIC           

            DOWNED TREES AND POWER POLES. MPING REPORT. 
            TIME ESTIMATED FROM RADAR. 

1106 AM     TSTM WND DMG     1 SW MIDDLESEX          40.57N 74.51W
02/07/2020                   MIDDLESEX          NJ   DEPT OF HIGHWAYS 

            DOWNED TREE ON STATE HIGHWAY 28 WESTBOUND 
            WEST OF MOUNTAIN AVENUE. LANE RESTRICTIONS 
            IN PLACE. TIME ESTIMATED FROM RADAR. 

1110 AM     TSTM WND DMG     2 WSW HOLMDEL           40.34N 74.20W
02/07/2020                   MONMOUTH           NJ   DEPT OF HIGHWAYS 

            DOWNED TREE AND WIRES ON NJ 34 NORTHBOUND 
            SOUTH OF CR 520. ALL LANES CLOSED. TIME 
            ESTIMATED FROM RADAR. 

1111 AM     TSTM WND GST     1 E BARNEGAT LIGHT      39.76N 74.09W
02/07/2020  M59 MPH          ANZ451             NJ   MESONET          

            WEATHERFLOW SENSOR. 

1126 AM     TSTM WND DMG     SPRING LAKE HEIGHTS     40.16N 74.04W
02/07/2020                   MONMOUTH           NJ   UTILITY COMPANY  

            DOWNED TREES AND POWER LINES FROM STRONG 
            WINDS. TIME ESTIMATED FROM RADAR. 

1130 AM     TSTM WND GST     MANTOLOKING             40.04N 74.05W
02/07/2020  M67 MPH          ANZ451             NJ   MESONET          

            HADS SENSOR. 

1136 AM     TSTM WND GST     SANDY HOOK              40.47N 74.01W
02/07/2020  M66 MPH          MONMOUTH           NJ   MESONET          

             

1220 PM     NON-TSTM WND GST 1 NNW ATLANTIC CITY     39.38N 74.42W
02/07/2020  M60 MPH          ATLANTIC           NJ   MESONET          

            ATLANTIC CITY MARINA. 

1225 PM     NON-TSTM WND GST NORTHEAST PHILADELPHIA  40.08N 75.01W
02/07/2020  M58 MPH          PHILADELPHIA       PA   ASOS             

            KPNE ASOS. 

1230 PM     NON-TSTM WND GST HIGH POINT              41.32N 74.66W
02/07/2020  M62 MPH          SUSSEX             NJ   MESONET          

             

1230 PM     NON-TSTM WND GST 1 NE MAGNOLIA           39.09N 75.46W
02/07/2020  M63 MPH          KENT               DE   DEPT OF HIGHWAYS 

            DELDOT SITE. 

1235 PM     NON-TSTM WND GST 1 S ODESSA              39.44N 75.66W
02/07/2020  M61 MPH          NEW CASTLE         DE   MESONET          

             

0130 PM     NON-TSTM WND GST 1 NNW ATLANTIC CITY     39.38N 74.42W
02/07/2020  M69 MPH          ATLANTIC           NJ   MESONET          

            ATLANTIC CITY MARINA. 

0156 PM     NON-TSTM WND GST BRICK                   40.01N 74.06W
02/07/2020  M58 MPH          OCEAN              NJ   MESONET          

            WEATHERFLOW SITE XMLK. 

0218 PM     NON-TSTM WND GST HARVEY CEDARS           39.71N 74.14W
02/07/2020  M60 MPH          OCEAN              NJ   MESONET          

             

0230 PM     NON-TSTM WND GST 5 SE MYSTIC ISLAND      39.51N 74.33W
02/07/2020  M60 MPH          OCEAN              NJ   MESONET          

            HADS GAUGE TKTN4. 

0240 PM     NON-TSTM WND GST HIGH POINT              41.32N 74.66W
02/07/2020  M62 MPH          SUSSEX             NJ   MESONET          

             

0242 PM     NON-TSTM WND GST SANDY HOOK              40.47N 74.01W
02/07/2020  M59 MPH          MONMOUTH           NJ   MESONET          

            WEATHERFLOW SITE. 

0254 PM     NON-TSTM WND GST ATLANTIC CITY INTERNATI 39.45N 74.57W
02/07/2020  M55 MPH          ATLANTIC           NJ   ASOS             

            KACY. 

0256 PM     NON-TSTM WND GST 2 SW BEACH HAVEN        39.55N 74.26W
02/07/2020  M60 MPH          OCEAN              NJ   PUBLIC           

            CWOP SITE. 

0305 PM     NON-TSTM WND DMG 1 WSW MALVERN           40.03N 75.53W
02/07/2020                   CHESTER            PA   DEPT OF HIGHWAYS 

            TREE DOWN IN WIRES ON KING RD AT SUGARTOWN 
            RD. 

0305 PM     NON-TSTM WND DMG 1 NNW ASTON TWP.        39.88N 75.43W
02/07/2020                   DELAWARE           PA   DEPT OF HIGHWAYS 

            DOWNED TREE ON PA-452. 


&&

$$

JEO/CMS

Public Information Statement - Tornado

NOUS41 KPHI 080044
PNSPHI
DEZ001-002-MDZ008-012-015-NJZ016>019-PAZ070-071-101>106-081245-

Public Information Statement
National Weather Service Mount Holly NJ
744 PM EST Fri Feb 7 2020

...NWS DAMAGE SURVEY FOR FEBRUARY 7 2020 TORNADO EVENT...

.Elkton tornado...

Start Location...Elkton in Cecil County MD
End Location...Elkton in Cecil County MD
Date...February 7, 2020
Estimated Time...9:39 AM EST
Maximum EF-Scale Rating...EF-1
Estimated Maximum Wind Speed...100 mph
Maximum Path Width...600 yards
Path Length...0.8 miles
Beginning Lat/Lon...39.65/-75.82
Ending Lat/Lon...39.65/-75.80
* Fatalities...0
* Injuries...0

...Summary...
An EF-1 tornado briefly touched down near the Elk Mills Quarry in 
Cecil County, Maryland. The tornado uprooted and snapped numerous 
softwood trees just east and north of the quarry near the 
intersection of Elk Mills Road, Appleton Road, and Fletchwood Road. 
A few hardwood and softwood trees were uprooted on nearby 
residential properties. The tornado continued east along Fletchwood 
Road passing over some industrial buildings toward the Pine Hill 
Apartment complex. At the apartment complex, numerous pine trees 
were uprooted or snapped. The tornado then dissipated as it 
continued east away from the apartment complex. Thankfully, no 
significant structural damage occurred and no injuries or fatalities 
occurred as a result of this tornado. 

EF Scale: The Enhanced Fujita Scale classifies tornadoes into the
following categories:

EF0...Weak......65 to 85 mph
EF1...Weak......86 to 110 mph
EF2...Strong....111 to 135 mph
EF3...Strong....136 to 165 mph
EF4...Violent...166 to 200 mph
EF5...Violent...>200 mph

* The information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
Storm Data.

$$

Radar Interrogation

Notable Radar Imagery (GR2Analyst)

Environment Environment
Figure 1: KDOX radar reflectivity factor for the 0.5 degree elevation angle valid at 1417 UTC 7 February 2020. At this time, severe convection was entering the WFO Mount Holly CWA. While the radar reflectivity was not overly impressive (typical of cold season convection), numerous upstream damage reports in the WFO Baltimore/Washington CWA increased forecaster confidence that severe winds were occurring with this convection, and warnings were issued accordingly. Figure 2: KDIX radar reflectivity factor for the 0.5 degree elevation angle valid at 1515 UTC 7 February 2020, about an hour after Figure 1. Severe convection was now entering the Philadelphia metro area. Cold season convection is typically shallow, and this case was no exception. While some echoes over 50 to 55 dBz can be seen in this image scanning just a few thousand feet above ground level over most of the line, these storms were only about 15,000 feet tall. Deep convection in summertime often exceeds 40,000 feet in height.
Environment Environment
Figure 3: Same as Figure 2 valid at 1618 UTC 7 February 2020, about another hour later. By this time, convection was exiting the WFO Mount Holly CWA, and was also weakening as it moved away from the already marginal instability further west. Still, some damaging gusts occurred all the way to the New Jersey coast. Figure 4: KDOX radar reflectivity factor (top left), storm relative velocity (SRM; top right), correlation coefficient (CC, bottom left) and spectrum width (SW; bottom right),) for the 0.5 degree elevation angle valid at 1436 UTC 7 February 2020. This was near the time a tornado touched down near Elk Mills. A velocity couplet is seen in the SRM data, with the reflectivity showing a “break” in the line sometimes associated with tornado formation. The enhanced SW values indicate turbulent flow often associated with tornadoes.
Environment Environment
Figure 5: KDOX radar reflectivity factor (left) and SRM (right) for the 0.5 degree elevation angle valid at 1436 UTC 7 February 2020. This is the same time as in Figure 4, and simply provides a somewhat broader perspective. An NWS storm survey team confirmed a small area of tornado damage when they surveyed the area that afternoon. As cold air rushed into the region behind the frontal system which produced the severe weather, the survey team experienced snow flurries while conducting their work. Figure 6: KDIX base velocity data for the 0.5 degree elevation angle valid at 1517 UTC 7 February 2020, near the time of Figure 2. The bright greens over southeast PA, southern NJ, and northern DE represent radar estimated velocities of 50 to 65 kts (about 55 to 75 mph) at around 3000 to 5000 feet above the surface. The strong low level vertical motion associated with the shallow but intense convection was easily able to transfer wind gusts of 50 to 70 mph to the surface, producing widespread damage.