Severe Storm Summary - August 7, 2019

Overview

Scattered severe thunderstorms moved across much of central and east-central WI during the afternoon and evening hours on August 7, 2019. Sporadic tree and power line damage was reported. WPS reported over 14,000 power outages at the peak of the event.

An EF0 tornado occurred in the city of Green Bay. Straight-line winds over 70 mph were measured in Oshkosh. In addition, large hail occurred with some of the storms.

The information below is preliminary and will be refined over the next week.

Please see the tabs below for more information.

Tornado
Map of Storm Reports
Radar
List of Storm Reports

Tornado:

Green Bay (Preliminary findings)
Brown Co.

Date	August 7, 2019
Time (Local)	5:48 pm - 5:57 pm
EF Rating	EF0
Est. Peak Winds	85 mph
Path Length	6.2 miles
Max Width	90 yards
Injuries/Deaths	None
Summary: A tornado formed in the city of Green Bay and moved southeast into Bellevue. Several buildings and at least 100 trees sustained damage in the path of the tornado. Straight-line wind damage was also evident, especially south of the tornado track.

Sign and tree damage

Carport damage

Power pole damage

Track Map

EF-Scale

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

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Wind and Flooding Reports:


Storm reports on August 7

Radar:

Radar Reflectivity from 5:00 PM to 6:15 PM August 7, 2019

Storm Relative Radar Reflectivity from 5:00 PM to 6:15 PM August 7, 2019

Preliminary Storm Reports

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GREEN BAY WI
941 PM CDT WED AUG 7 2019

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

1238 PM     HAIL             RHINELANDER             45.63N 89.41W 
08/07/2019  M0.88 INCH       ONEIDA             WI   BROADCAST MEDIA 

0100 PM     HAIL             4 E CRANDON             45.56N 88.82W 
08/07/2019  M0.75 INCH       FOREST             WI   PUBLIC          

0119 PM     TSTM WND DMG     2 S LAONA               45.53N 88.68W 
08/07/2019                   FOREST             WI   LAW ENFORCEMENT 

            2 TREES DOWN 2 MILES SOUTH OF LAONA. 1 TREE DOWN 1 MILE 
            NORTH OF LAONA ON DIRT ROAD ALSO.

0212 PM     HAIL             3 NE PICKEREL           45.39N 88.87W 
08/07/2019  E0.25 INCH       FOREST             WI   PUBLIC          

0242 PM     HAIL             13 W CRIVITZ            45.23N 88.28W 
08/07/2019  E1.00 INCH       MARINETTE          WI   PUBLIC          

            REPORT RECEIVED VIA TWITTER.

0332 PM     HAIL             6 NW POUND              45.15N 88.12W 
08/07/2019  E1.50 INCH       MARINETTE          WI   PUBLIC          

            SLIGHTLY SMALLER THAN GOLF BALL SIZE HAIL REPORTED BY 
            PUBLIC ON COUNTY HWY P

0338 PM     TSTM WND DMG     COLEMAN                 45.06N 88.03W 
08/07/2019                   MARINETTE          WI   FIRE DEPT/RESCUE

            POWER POLE DOWN IN COLEMAN. REPORT FROM COLEMAN FIRE 
            DEPARTMENT VIA SCANNER. TIME ESTIMATED BY RADAR.

0340 PM     HAIL             COLEMAN                 45.06N 88.03W 
08/07/2019  E1.75 INCH       MARINETTE          WI   PUBLIC          

            ESTIMATED FROM PICTURE ON SOCIAL MEDIA

0340 PM     HAIL             COLEMAN                 45.06N 88.03W 
08/07/2019  E0.88 INCH       MARINETTE          WI   LAW ENFORCEMENT 

0406 PM     HAIL             OCONTO                  44.88N 87.88W 
08/07/2019  M1.50 INCH       OCONTO             WI   PUBLIC          

            UPDATE OF PREVIOUS REPORT - OBSERVER MEASURED HAIL AND 
            FOUND SOME AS LARGE AS 1.5 INCHES

0406 PM     HAIL             OCONTO                  44.88N 87.88W 
08/07/2019  E1.00 INCH       OCONTO             WI   PUBLIC          

            HAIL UP TO AN INCH IN DIAMETER IN OCONTO.

0414 PM     HAIL             HOLLISTER               45.25N 88.80W 
08/07/2019  E0.25 INCH       LANGLADE           WI   PUBLIC          

0421 PM     TSTM WND DMG     LITTLE STURGEON         44.84N 87.57W 
08/07/2019                   DOOR               WI   LAW ENFORCEMENT 

            TREES DOWN. TIME ESTIMATED BY RADAR.

0435 PM     TSTM WND DMG     MAPLEWOOD               44.75N 87.48W 
08/07/2019                   DOOR               WI   LAW ENFORCEMENT 

            1 TREE DOWN. TIME ESTIMATED BY RADAR.

0435 PM     HAIL             IOLA                    44.50N 89.11W 
08/07/2019  M0.25 INCH       WAUPACA            WI   PUBLIC          

0435 PM     TSTM WND DMG     BRUSSELS                44.73N 87.63W 
08/07/2019                   DOOR               WI   LAW ENFORCEMENT 

            TREES DOWN. TIME ESTIMATED BY RADAR.

0442 PM     TSTM WND DMG     4 E IOLA                44.50N 89.03W 
08/07/2019                   WAUPACA            WI   TRAINED SPOTTER 

            ESTIMATED 45 TO 55 MPH GUST. 4 TO 5 INCH DIAMETER 
            BRANCHES DOWN AND 2 TREES UPROOTED.

0442 PM     HAIL             GREEN BAY               44.51N 88.00W 
08/07/2019  E0.50 INCH       BROWN              WI   PUBLIC          

            DIME SIZE HAIL AT INTERSECTION OF EAST MASON STREET AND 
            ALPINE ROAD.

0459 PM     TSTM WND DMG     BEAR CREEK              44.53N 88.71W 
08/07/2019                   OUTAGAMIE          WI   LAW ENFORCEMENT 

            COUPLE TREES DOWN IN THE TOWNSHIP OF DEER CREEK, FAR 
            NORTHWEST OUTAGAMIE COUNTY.

0512 PM     TSTM WND DMG     NAVARINO                44.61N 88.48W 
08/07/2019                   SHAWANO            WI   LAW ENFORCEMENT 

            NUMEROUS TREES DOWN, SOME ON POWER LINES, OVER THE SOUTH 
            CENTRAL AND SOUTHEAST PART OF SHAWANO COUNTY. 

0550 PM     TSTM WND DMG     2 SE GREEN BAY          44.49N 87.98W 
08/07/2019                   BROWN              WI   911 CALL CENTER 

            ROOF OFF HARDWARE STORE AND TREES SNAPPED IN A 2-4 BLOCK 
            RADIUS ON SOUTHEAST SIDE OF GREEN BAY.

0550 PM     HAIL             2 ENE GREEN BAY         44.52N 87.96W 
08/07/2019  E0.75 INCH       BROWN              WI   PUBLIC          

0554 PM     HAIL             GREEN BAY               44.51N 88.00W 
08/07/2019  E0.50 INCH       BROWN              WI   PUBLIC          

            DIME SIZE HAIL AT INTERSECTION OF EAST MASON STREET AND 
            ALPINE DRIVE.

0555 PM     TSTM WND DMG     1 N BELLEVUE            44.44N 87.91W 
08/07/2019                   BROWN              WI   LAW ENFORCEMENT 

            WIRES DOWN BELLEVUE AND ALLOUEZ AREAS

0601 PM     HAIL             MOSINEE                 44.78N 89.69W 
08/07/2019  E0.25 INCH       MARATHON           WI   TRAINED SPOTTER 

            BRIEF GUSTY WINDS AS WELL. NO ESTIMATE OF SPEED.

0605 PM     FLOOD            LUXEMBURG               44.54N 87.69W 
08/07/2019                   KEWAUNEE           WI   LAW ENFORCEMENT 

            FLOODING REPORTED FROM LUXEMBURG TO ALGOMA. NO OTHER 
            DETAILS KNOWN AT THIS TIME. TIME ESTIMATED.

0605 PM     TSTM WND DMG     1 W LUXEMBURG           44.54N 87.71W 
08/07/2019                   KEWAUNEE           WI   LAW ENFORCEMENT 

            COUPLE SMALL TREES AND SOME BRANCHES DOWN AT HWY 54 AND 
            H. TIME ESTIMATED BY RADAR.

0620 PM     TSTM WND GST     MARSHFIELD              44.66N 90.16W 
08/07/2019  M61.00 MPH       WOOD               WI   ASOS            

0655 PM     FUNNEL CLOUD     PLOVER                  44.45N 89.53W 
08/07/2019                   PORTAGE            WI   CO-OP OBSERVER  

            2 FUNNEL CLOUDS AFTER SHELF CLOUD WENT THROUGH. PEAK WIND
            OF 41 MPH ASSOCIATED WITH THE SHELF CLOUD.

0657 PM     FUNNEL CLOUD     1 W WISCONSIN RAPIDS    44.40N 89.86W 
08/07/2019                   WOOD               WI   AMATEUR RADIO   

            BRIEF FUNNEL CLOUD THEN DISAPPATED

0702 PM     HAIL             2 E APPLETON            44.26N 88.36W 
08/07/2019  E0.88 INCH       OUTAGAMIE          WI   TRAINED SPOTTER 

0705 PM     HAIL             APPLETON                44.26N 88.40W 
08/07/2019  E1.00 INCH       OUTAGAMIE          WI   PUBLIC          

            FROM SOCIAL MEDIA

0705 PM     HAIL             HILBERT                 44.13N 88.16W 
08/07/2019  E1.00 INCH       CALUMET            WI   PUBLIC          

            FROM SOCIAL MEDIA. TIME ESTIMATED.

0709 PM     HAIL             2 E GREEN BAY           44.51N 87.96W 
08/07/2019  M1.00 INCH       BROWN              WI   NWS EMPLOYEE    

            MOST HAIL WAS SMALLER, BY SOME UP TO QUARTER SIZE.

0719 PM     FLOOD            GREEN BAY               44.51N 88.00W 
08/07/2019                   BROWN              WI   NWS EMPLOYEE    

            2 FEET OF STANDING WATER AT INTERSECTION OF MILITARY AND 
            SHAWANO IN GREEN BAY 

0727 PM     HAIL             APPLETON                44.26N 88.40W 
08/07/2019  E1.00 INCH       OUTAGAMIE          WI   PUBLIC          

0743 PM     TSTM WND DMG     3 SE REDGRANITE         44.00N 89.05W 
08/07/2019                   WAUSHARA           WI   LAW ENFORCEMENT 

            1 TREE DOWN IN TOWNSHIP OF WARREN

0759 PM     TSTM WND GST     OSHKOSH                 44.01N 88.55W 
08/07/2019  M71.00 MPH       WINNEBAGO          WI   ASOS            

            GUST TO 62 KNOTS ON OSH ASOS

0801 PM     TSTM WND DMG     OSHKOSH                 44.01N 88.55W 
08/07/2019                   WINNEBAGO          WI   LAW ENFORCEMENT 

            COUPLE BRANCHES DOWN ON WIRES AND A TREE DOWN AROUND THE 
            OSHKOSH VICINITY

0821 PM     TSTM WND DMG     CHILTON                 44.03N 88.16W 
08/07/2019                   CALUMET            WI   TRAINED SPOTTER 

            LARGE TREE BRANCHES DOWN ON WATER STREET IN CHILTON.

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