A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >
Overview
Storms developed earlier in the day further to the west due to divergence aloft. An instability gradient further south, along with limited heating to the north, allowed for the best environment to be in southeastern North Dakota and west central Minnesota. The storms progressed to the east with some southerly component due to these gradients and wind shear vectors. The main impacts were damaging winds, hail, and isolated heavy rainfall. The worst of the damage was in Fargo-Moorhead, Lisbon, and Jamestown. Hail to an inch or larger was also seen.
Photos & Video
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| Lisbon, ND (Courtesy of Eric Whitehill) |
Lisbon, ND (Courtesy of Eric Whitehill) |
Lisbon, ND (Courtesy of Eric Whitehill) |
Lisbon, ND (Courtesy of Eric Whitehill) |
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| Fargo, ND (Courtesy of Kim Rueb) |
Radar
Radar loop from 4:00 p.m. to 10:00 p.m. Note the bowing structure that can be seen in southern areas. Also note the parallel stratiform rain farther to the north.
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Base Velocity Radar at 6:21 p.m. With Highest Winds Circled |
Base Velocity Radar at 7:55 p.m. With Highest Winds Circled |
Wind and Hail Reports
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SPC Storm Reports for September 2, 2019 |
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GRAND FORKS ND
232 PM CDT TUE SEP 3 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0458 PM TSTM WND DMG LEAL 47.11N 98.31W
09/02/2019 BARNES ND BROADCAST MEDIA
A FEW LARGE TREE BRANCHES BROKEN DOWN IN TOWN. REPORT
POSTED VIA SOCIAL MEDIA.
0501 PM TSTM WND GST 2 E DAZEY 47.19N 98.16W
09/02/2019 M58.00 MPH BARNES ND MESONET
NDAWN MESONET STATION MEASURED 58 MPH WIND GUST AT 501
PM.
0505 PM HAIL COOPERSTOWN 47.44N 98.12W
09/02/2019 E1.00 INCH GRIGGS ND TRAINED SPOTTER
0506 PM TSTM WND GST 2 E ROGERS 47.07N 98.16W
09/02/2019 M55.00 MPH BARNES ND MESONET
PERSONAL WEATHER STATION REPORTED 55 MPH WIND GUST. TIME
ESTIMATED ON RADAR.
0510 PM TSTM WND GST 4 S LUVERNE 47.19N 97.93W
09/02/2019 M57.00 MPH BARNES ND MESONET
PERSONAL WEATHER STATION REPORTED 57 MPH WIND GUST. TIME
ESTIMATED BASED ON RADAR.
0510 PM TSTM WND GST 5 NNE LUVERNE 47.32N 97.89W
09/02/2019 M63.00 MPH STEELE ND TRAINED SPOTTER
MEASURED BY PERSONAL WEATHER STATION.
0516 PM TSTM WND GST 1 N PILLSBURY 47.22N 97.80W
09/02/2019 M56.00 MPH BARNES ND MESONET
NDAWN STATION REPORTED 56 MPH WIND GUST AT 516 PM
0520 PM TSTM WND DMG 2 S LITCHVILLE 46.63N 98.19W
09/02/2019 LAMOURE ND PUBLIC
DEBRIS FROM TREES AND NEARBY CROP FIELD BEING BLOWN
AROUND
0539 PM TSTM WND GST 1 NE FORT RANSOM 46.53N 97.92W
09/02/2019 M58.20 MPH RANSOM ND MESONET
PEAK WIND MEASURED AT A PERSONNAL WEATHER STATION.
0543 PM TSTM WND DMG 3 S BUFFALO 46.88N 97.55W
09/02/2019 CASS ND BROADCAST MEDIA
*** 1 INJ *** SEMI TIPPED OVER BY WIND ON I94 NEAR THE
BUFFALO EXIT. BLOCKED PART OF THE WESTBOUND LANE FOR
AROUND 30 MINUTES WITH TIME ESTIMATED BASED ON RADAR.
0550 PM TSTM WND GST ELLIOTT 46.40N 97.81W
09/02/2019 E90.00 MPH RANSOM ND TRAINED SPOTTER
ROOF PANELS WERE BLOWN OFF THE GABLE END OF A CENEX
STORAGE BUILDING. TIME ESTIMATED BASED ON RADAR.
0553 PM TSTM WND GST 2 W LISBON 46.44N 97.73W
09/02/2019 M59.00 MPH RANSOM ND MESONET
WIND GUST MEASURED BY NDAWN STATION
0600 PM TSTM WND DMG LISBON 46.44N 97.68W
09/02/2019 RANSOM ND TRAINED SPOTTER
REPORTS AND PHOTOS OF NUMEROUS TREES EITHER SNAPPED OR
UPROOTED TREES. SOME SNAPPED TREES RANGED UP TO 2 FEET IN
DIAMETER
0604 PM TSTM WND GST 2 ENE WEST FARGO 46.88N 96.86W
09/02/2019 E90.00 MPH CASS ND BROADCAST MEDIA
STEEL ROOF PANELS TORN OFF A SHOP BUILDING. PEAK WINDS OF
80 TO 90 MPH ESTIMATED. TIME ESTIMATED BASED ON RADAR.
REPORT AND PHOTO POSTED VIA SOCIAL MEDIA.
0605 PM TSTM WND DMG HARWOOD 46.98N 96.88W
09/02/2019 CASS ND PUBLIC
REPORT OF MULTIPLE BRANCHES OF 2 TO 4 INCHES IN DIAMETER
DOWN IN TOWN. TIME ESTIMATED FROM RADAR.
0608 PM TSTM WND DMG FARGO 46.88N 96.82W
09/02/2019 CASS ND BROADCAST MEDIA
BROADCAST MEDIA REPORTS THE ROOF FROM A VACANT STEEL CLAD
BUILDING BLOWN OFF. LOCATION NEAR THE 2300 BLOCK OF MAIN
STREET. REPORT CONFIRMED VIA SOCIAL MEDIA IMAGES. TIME
ESTIMATED BY RADAR.
0609 PM TSTM WND GST 3 NNW FARGO 46.92N 96.84W
09/02/2019 M71.00 MPH CASS ND ASOS
FARGO HECTOR INTERNATIONAL AIRPORT
0609 PM TSTM WND GST 3 NNW FARGO 46.92N 96.84W
09/02/2019 M77.00 MPH CASS ND OTHER FEDERAL
PEAK WINDS MEASURED ON A SECONDARY WIND SENSOR LOCATED AT
FARGO HECTOR AIRPORT.
0610 PM TSTM WND DMG WEST FARGO 46.87N 96.90W
09/02/2019 CASS ND PUBLIC
SOCIAL MEDIA REPORT OF 3 POWERLINE POLES DOWN
0611 PM TSTM WND GST 2 NW FARGO 46.90N 96.85W
09/02/2019 M67.00 MPH CASS ND MESONET
NORTH DAKOTA AGRICULTURAL WEATHER NETWORK NDAWN ON A 10M
MAST. MEASURED AT 61 MPH ON A 4M MAST.
0615 PM TSTM WND DMG WEST FARGO 46.87N 96.90W
09/02/2019 CASS ND TRAINED SPOTTER
TWO TO THREE-INCH TREE BRANCHES BROKE OFF TREES. POWER
WENT OUT.
0619 PM TSTM WND GST MOORHEAD 46.86N 96.76W
09/02/2019 M75.00 MPH CLAY MN TRAINED SPOTTER
DAVIS UNIT RECORDED 75 MPH GUST BEFORE ANEMOMETER BROKE
APART. LOCATION NEAR I94 AND 34TH STREET.
0620 PM TSTM WND GST 2 SE DILWORTH 46.85N 96.67W
09/02/2019 M87.00 MPH CLAY MN MESONET
WIND GUST TO 87 MPH MEASURE AT DILWORTH RWIS.
0620 PM TSTM WND DMG DILWORTH 46.88N 96.70W
09/02/2019 CLAY MN BROADCAST MEDIA
A FEW TREES EITHER SNAPPED OR BLOWN OVER. PHOTOS AND
REPORTS POSTED VIA SOCIAL MEDIA.
0626 PM TSTM WND DMG 3 N FARGO 46.92N 96.82W
09/02/2019 CASS ND PUBLIC
REPORTS OF MULTIPLE POWERLINES DOWN IN THE NORTHERN
PORTION OF FARGO
0631 PM HAIL WYNDMERE 46.26N 97.13W
09/02/2019 E1.25 INCH RICHLAND ND PUBLIC
SIZE ESTIMATED BASED ON SOCIAL MEDIA PICTURE WITH TIME
ESTIMATED BASED ON RADAR
0640 PM HAIL BARNEY 46.27N 97.00W
09/02/2019 E1.00 INCH RICHLAND ND BROADCAST MEDIA
PHOTO AND REPORT POSTED VIA SOCIAL MEDIA. TIME ESTIMATED
BASED ON RADAR.
0645 PM TSTM WND GST 1 WSW LAKE PARK 46.88N 96.11W
09/02/2019 M57.00 MPH BECKER MN MESONET
HIGHEST WIND GUST TO 57 MPH ON THE LAKE PARK RWIS.
0648 PM TSTM WND GST 6 W HANKINSON 46.07N 97.02W
09/02/2019 E60.00 MPH RICHLAND ND TRAINED SPOTTER
WIND ESTIMATED IN EXCESS OF 60 MPH.
0650 PM TSTM WND GST 3 SW MOORETON 46.24N 96.92W
09/02/2019 M59.00 MPH RICHLAND ND MESONET
MEASURED BY NDAWN STATION ON A 10M TOWER.
0656 PM TSTM WND DMG CORMORANT 46.73N 96.07W
09/02/2019 BECKER MN EMERGENCY MNGR
NUMEROUS LARGE BRANCHES BROKEN DOWN BETWEEN CORMORANT AND
LAKE MAUDE. SHINGLES TORN OFF A ROOF. BOAT LAUNCHES
FLIPPED.
0700 PM NON-TSTM WND GST 3 N FARGO 46.92N 96.82W
09/02/2019 M58.00 MPH CASS ND ASOS
FARGO ASOS REPORTED WIND GUST TO 50 KNOTS DUE TO WAKE LOW
0709 PM TSTM WND GST 8 E PELICAN RAPIDS 46.57N 95.92W
09/02/2019 M56.00 MPH OTTER TAIL MN MESONET
PEAK WINDS MEASURED BY A PERSONNAL WEATHER STATEION NEAR
THE EAST SHORE OF LAKE LIDA.
0720 PM TSTM WND GST 2 W TENNEY 46.04N 96.49W
09/02/2019 M68.00 MPH WILKIN MN MESONET
HIGHEST WIND GUST MEASURED 68 MPH AT TENNEY RWIS.
0729 PM TSTM WND DMG 2 ESE PHELPS 46.37N 95.78W
09/02/2019 OTTER TAIL MN MESONET
NUMEROUS LARGE TREE BRANCHES BROKEN DOWN BETWEEN LAKE
LIDA AND OTTER TAIL LAKE. MULTIPLE PERSONAL WEATHER
STATIONS REGISTERED SUSTAINED WINDS AT 40 MPH WITH GUSTS
BETWEEN 50 AND 60 MPH.
0745 PM TSTM WND GST 6 SW WENDELL 45.97N 96.19W
09/02/2019 M55.00 MPH GRANT MN MESONET
PEAK WINDS MEASURED AT A PERSONNAL WEATHER STATION.
0747 PM TSTM WND GST 4 N WADENA 46.50N 95.13W
09/02/2019 E60.00 MPH WADENA MN PUBLIC
PUBLIC ESTIMATED 60 MPH WINDS.
0755 PM TSTM WND GST 5 WSW HOFFMAN 45.80N 95.88W
09/02/2019 M72.00 MPH GRANT MN TRAINED SPOTTER
REPORT OF 72 MPH WIND RELAYED VIA SPOTTER NETWORK. TIME
ESTIMATED BASED ON RADAR.
0805 PM TSTM WND GST 2 WNW VERNDALE 46.41N 95.05W
09/02/2019 M55.00 MPH WADENA MN MESONET
PEAK WINDS MEASURED AT THE RWIS STATION ALONG HWY 10.
0807 PM HEAVY RAIN 1 E BRECKENRIDGE 46.26N 96.57W
09/02/2019 M1.01 INCH WILKIN MN CO-OP OBSERVER
COOP RAIN REPORT FROM TODAYS STORMS.
0856 PM NON-TSTM WND GST PARK RAPIDS 46.92N 95.06W
09/02/2019 M58.00 MPH HUBBARD MN ASOS
MEASURED GUST OF 50 KNOTS BY ASOS.
Environment
Initially, a warm frontal boundary was located to the south with low pressure centered over southern Saskatchewan. Throughout the day, storms formed north of the warm front with the low pressure slowly drifting eastward. At the 700mb level, a shortwave was moving across the County Warning Area with increased 700-500mb RH values. At 300mb, the upper-level divergence over northwestern North Dakota followed the jet eastward, which enhanced thunderstorm development during the afternoon hours. Storms followed the bulk shear vectors to progress to the ESE. Surface to 6 km shear values of 50 to 70 knots remained ahead of the line through the event. At the 850mb level, higher moisture south of the area was advected northward ahead of the upper-level shortwave. Precipitable water values were near 1.25 inches across the entire area. Downdraft CAPE values in excess of 800 J/kg were advected into southeastern North Dakota and parts of west central Minnesota, which provided an environment for damaging winds.
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| Surface Analysis at 4:00 p.m. | Surface Analysis at 7:00 p.m. | Surface Analysis at 10:00 p.m. | 700mb Heights, Winds, Temps, and 700-500mb RH at 4:00 p.m. |
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| 300mb Heights, Winds, and Divergence at 1:00 p.m. | Surface to 6 km Shear at 4:00 p.m. | Precipitable Water and 850mb Moisture Transport at 4;00 p.m. | Downdraft CAPE at 4:00 p.m. |
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