Severe Thunderstorm Warning 322, NWS Grand Forks, ND

Issued

Aug 31, 2002, 9:11 PM CDT (02:11 UTC)

Expired

Aug 31, 2002, 10:00 PM CDT

In force

49 min

Issued by

NWS Grand Forks, ND

Area

Counties, with a storm outline in the text

County Cavalier County, ND

The Fargo/Grand Forks radar (KMVX), 151 km from the middle of the area, began a volume at 02:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

535 
WUUS53 KFGF 010211
SVRFAR
NDC019-010300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
911 PM CDT SAT AUG 31 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  EASTERN CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA.

* UNTIL 1000 PM CDT.

* AT 908 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES WEST OF OLGA...OR ABOUT 11 MILES EAST
  OF LANGDON...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  OLGA AT 915 PM AND
  VANG AT 925 PM.

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT SUNDAY
MORNING FOR NORTHWEST MINNESOTA AND NORTHEAST NORTH DAKOTA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT SUNDAY
MORNING FOR NORTHEAST NORTH DAKOTA.

LAT...LON 4880 9830 4867 9811 4861 9796 4899 9798


04

NNNN

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 31, 8:45 PM CDT, 26 minutes earlier.

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
845 PM CDT SAT AUG 31 2002

SEVERE THUNDERSTORMS ARE CONFINED SO FAR TO EXTREME NORTHERN RED
RIVER VALLEY BUT TRAINING THUNDERSTORMS ARE APPROACHING ON SEVERAL
FRONTS AT WEST/SOUTHWEST SIDE OF CWA. BELIEVE THE AVN WAS MOST
CORRECT IN PLACEMENT OF HEAVIEST RAIN TONIGHT BUT FLOOD WATCH IN
EFFECT THROUGHOUT REGION IS STILL VALID WITH SATURATED SOILS IN
ABUNDANCE. WILL LEAVE ZONES BASICALLY ALONE BUT WILL ADD EMPHASIS
ON FLOOD POTENTIAL AS NONE WAS INCLUDED EARLIER.

.FGF...FLASH FLOOD WATCH ENTIRE CWA TONIGHT.
       SEVERE THUNDERSTORM WATCH TIL MIDNIGHT NORTH HALF EXCEPT LAKE
       OF THE WOODS AND BELTRAMI COUNTIES.
GV

In the hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
343 PM CDT SAT AUG 31 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0745 AM    8 N BEMIDJI               MN   .75 INCH HAIL
08/31/02   BELTRAMI

Severe Thunderstorm Warnings in North Dakota, 2002Every severe thunderstorm warning in 2002

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.