Review of the May 15, 2019 Severe Weather Event

SPC Products

Below are the Storm Prediction Center outlooks and NWS Grand Forks watches and warnings that were issued leading up to and during the event.

SPC Day 1 Convective Outlook (800 am)	SPC Day 1 Convective Outlook (1130 am)	SPC Mesoscale Discussion (330 pm)	SPC Mesoscale Discussion (608 pm)
SPC Mesoscale Discussion (805 pm)	Initial Severe Thunderstorm Watch	Expanded Severe Thunderstorm Watch	NWS Grand Forks Severe Thunderstorm Warnings

Photos & Video

North of Grand Forks/East Grand Forks (Photo Courtesy Matthew Jenks)	East of East Grand Forks (Photo Courtesy of Debbie Larimer Krueger)	Halstad (Photo Courtesy of Faye DeLong)	North of Lidgerwood (Photo Courtesy of Riley Moe)

Radar

Radar loop from 4:00 p.m. to 10:00 p.m.

Radar loop from 10:00 p.m. to 1:00 a.m. on May 16th

Storm Reports

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
128 PM CDT THU MAY 16 2019

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

0645 PM     FUNNEL CLOUD     3 SW EDMORE             48.38N 98.50W 
05/15/2019                   Ramsey             ND   911 CALL CENTER 

            PERSISTENT FUNNEL CLOUD REPORTED AND PHOTOGRAPHED BY 
            MULTIPLE SOURCES AND LOCATED WEST OF EDMORE AND SOUTH OF 
            HIGHWAY 17. A BRIEF NON DAMAGING TOUCHDOWN WAS POSSIBLE.

0654 PM     HAIL             4 NNE EDMORE            48.47N 98.42W 
05/15/2019  E1.00 INCH       Ramsey             ND   TRAINED SPOTTER 

            A FEW LARGER DIME TO QUARTER SIZED HAIL ACROSS HIGHWAY 1.
            TIME ESTIMATED BASED ON RADAR.

0655 PM     HAIL             3 N NEW ROCKFORD        47.72N 99.14W 
05/15/2019  E1.50 INCH       Eddy               ND   TRAINED SPOTTER 

0712 PM     HAIL             13 ENE NEW ROCKFORD     47.75N 98.88W 
05/15/2019  E1.00 INCH       Eddy               ND   TRAINED SPOTTER 

            TIME ESTIMATED FROM RADAR.

0728 PM     TSTM WND GST     8 N MCHENRY             47.69N 98.59W 
05/15/2019  M72.00 MPH       Eddy               ND   MESONET         

            SUSTAINED WIND SPEEDS OF 45 MPH WITH GUST TO 72 MPH AT 
            MCHENRY NDAWN STATION.

0745 PM     TSTM WND GST     RED WILLOW LAKE         47.65N 98.37W 
05/15/2019  E65.00 MPH       Griggs             ND   PUBLIC          

            A FEW LARGE TREE BRANCHES DOWN. WINDS ESTIMATED BETWEEN 
            60 AND 70 MPH. STRONG WINDS CONTINUED ACROSS CENTRAL 
            WILLOW TOWNSHIP.

0820 PM     HAIL             1 E MEKINOCK            48.01N 97.34W 
05/15/2019  E1.50 INCH       Grand Forks        ND   PUBLIC          

            REPORT RECEIVED VIA SOCIAL MEDIA. TIME ESTIMATED BASED ON
            RADAR.

0837 PM     HAIL             7 NW GRAND FORKS        47.99N 97.18W 
05/15/2019  E1.25 INCH       Grand Forks        ND   PUBLIC          

0841 PM     TSTM WND GST     5 N GRAND FORKS         47.99N 97.07W 
05/15/2019  M50.00 MPH       Grand Forks        ND   MESONET         

            MEASURED AT GRAND FORKS NDDOT RWIS SITE.

0845 PM     FUNNEL CLOUD     2 NE EAST GRAND FORKS   47.95N 96.99W 
05/15/2019                   Polk               MN   911 CALL CENTER 

            PERSISTENT FUNNEL CLOUD VIEWED AND PHOTOGRAPHED TO THE 
            NORTH AND EAST OF EAST GRAND FORKS. FIRST REPORT RECEIVED
            VIA POLK COUNTY SHERIFFS OFFICE. TIME AND LOCATION 
            ESTIMATED FROM VARIOUS REPORTS AND RADAR.

0852 PM     TSTM WND GST     SANBORN                 46.94N 98.22W 
05/15/2019  E60.00 MPH       BARNES             ND   AMATEUR RADIO   

            ESTIMATED WINDS WITH HALF INCH HAIL.

0858 PM     TSTM WND GST     8 ENE EAST GRAND FORKS  47.97N 96.86W 
05/15/2019  E90.00 MPH       Polk               MN   PUBLIC          

            POWER POLE SNAPPED. PEAK WIND ESTIMATED TO 90 MPH. TIME 
            ESTIMATED FROM RADAR.

0911 PM     HEAVY RAIN       MAYVILLE                47.50N 97.33W 
05/15/2019  M0.55 INCH       TRAILL             ND   TRAINED SPOTTER 

            0.55 INCHES OF RAIN IN TWENTY MINUTES...RAIN CONTINUES.

0913 PM     HAIL             4 SW VALLEY CITY        46.88N 98.07W 
05/15/2019  E1.50 INCH       Barnes             ND   PUBLIC          

            REPORT RECEIVED VIA SOCIAL MEDIA. TIME ESTIMATED FROM 
            RADAR.

0914 PM     HAIL             VALLEY CITY             46.92N 98.01W 
05/15/2019  E1.00 INCH       BARNES             ND   PUBLIC          

            REPORTED RELAYED BY VALLEY CITY WARNING POINT.

0915 PM     TSTM WND GST     VALLEY CITY             46.92N 98.01W 
05/15/2019  M55.00 MPH       BARNES             ND   AWOS            

            MEASURED AT VALLEY CITY AWOS.

0940 PM     HAIL             HALSTAD                 47.35N 96.82W 
05/15/2019  E1.00 INCH       NORMAN             MN   PUBLIC          

            TIME ESTIMATED FROM RADAR.

0942 PM     TSTM WND DMG     1 N HALSTAD             47.37N 96.82W 
05/15/2019                   Norman             MN   COUNTY OFFICIAL 

            TWO EMPTY HOPPER BOTTOMED SEED BINS WERE BLOWN OVER.

0943 PM     HAIL             2 N FINGAL              46.79N 97.79W 
05/15/2019  E1.75 INCH       Barnes             ND   BROADCAST MEDIA 

            LARGE HAIL IN AND AROUND FINGAL AREA. TIME ESTIMATED 
            BASED ON RADAR.

0959 PM     TSTM WND GST     1 N ADA                 47.31N 96.51W 
05/15/2019  M64.00 MPH       Norman             MN   MESONET         

            ADA NDAWN STATION.

1040 PM     TSTM WND GST     1 SSE WAUBUN            47.17N 95.93W 
05/15/2019  E90.00 MPH       Mahnomen           MN   LAW ENFORCEMENT 

            SEVERAL LARGE TREE BRANCHES AND LIMBS DOWN, PARTIALLY 
            BLOCKING HIGHWAY 59. ELECTRIC STEEL SIGNAGE BLOWN OVER. 
            PEAK WINDS ESTIMATED TO 90 MPH.

1127 PM     HAIL             3 N LIDGERWOOD          46.12N 97.15W 
05/15/2019  M1.00 INCH       Richland           ND   STORM CHASER    

            NICKEL TO QUARTER SIZED HAIL. PHOTO POSTED VIA SOCIAL 
            MEDIA.

1145 PM     TSTM WND DMG     2 S GREAT BEND          46.13N 96.80W 
05/15/2019                   Richland           ND   PUBLIC          

            A FEW 4 TO 5 INCH DIAMETER TREE BRANCHES BROKEN DOWN. DIME
            TO NICKEL SIZED HAIL. TIME ESTIMATED BASED ON RADAR AND 
            NEARBY WIND REPORTS.

1149 PM     TSTM WND GST     GREAT BEND              46.15N 96.80W 
05/15/2019  M51.00 MPH       RICHLAND           ND   MESONET         

            PEAK WIND MEASURED AT A PERSONAL WEATHER STATION.

Environment

4 pm Surface Map	7 pm Surface Map	10 pm Surface Map

6 pm SBCAPE	6 pm Effective Bulk Shear	6 pm Precipitable Water