A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >
Overview
Strong to severe thunderstorms impacted portions of eastern North Dakota and the northwest quarter of Minnesota on the evening of Wednesday, May 15th. There were reports of damaging wind gusts of 60-70 mph, along with numerous reports of large hail up to golf ball size.
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.
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| SPC Day 1 Convective Outlook (800 am) |
SPC Day 1 Convective Outlook (1130 am) |
SPC Mesoscale Discussion (330 pm) |
SPC Mesoscale Discussion (608 pm) |
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| SPC Mesoscale Discussion (805 pm) |
Initial Severe Thunderstorm Watch |
Expanded Severe Thunderstorm Watch |
NWS Grand Forks Severe Thunderstorm Warnings |
Photos & Video
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| 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
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| 4 pm Surface Map | 7 pm Surface Map | 10 pm Surface Map |
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| 6 pm SBCAPE | 6 pm Effective Bulk Shear | 6 pm Precipitable Water |
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