Severe Thunderstorm Warning 291, NWS Grand Forks, ND

Issued

Aug 28, 2002, 1:44 PM CDT (18:44 UTC)

Expired

Aug 28, 2002, 2:30 PM CDT

In force

46 min

Issued by

NWS Grand Forks, ND

Area

Counties, with a storm outline in the text

County Becker County, MN

The Fargo/Grand Forks radar (KMVX), 152 km from the middle of the area, began a volume at 18:47 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.

830 
WUUS53 KFGF 281844
SVRFAR
MNC005-281930-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
144 PM CDT WED AUG 28 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  NORTHERN BECKER COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 230 PM CDT.

* AT 142 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES WEST OF BAD MEDICINE LAKE...OR ABOUT 28
  MILES NORTHEAST OF DETROIT LAKES...MOVEMENT WAS TO THE EAST AT 15
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  BAD MEDICINE LAKE AT 150 PM...
  PONSFORD AT 205 PM AND
  TWO INLETS AT 230 PM.

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

LAT...LON 4714 9554 4706 9561 4682 9528 4713 9519


8

NNNN

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 28, 10:25 AM CDT, 3 hours 19 minutes earlier.

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1025 AM CDT WED AUG 28 2002

FORECAST CHALLENGE FOR IS PRECIPITATION. LATEST SATELLITE IMAGERY
SHOWS ONLY AREA NOT COVERED BY CLOUDS IS IN WC MN. KMVX HAS LINE OF
CONVECTION ALONG A BDE-GFK LINE...WITH OTHER SCATTERED STORMS
THROUGH S 2/3RDS OF AREA. CURRENT MSAS SURFACE ANALYSIS HAS LOW
CENTERED JUST E OF MOBRIDGE...WITH INVERTED TROF EXTENDING THROUGH
AREA ALONG A JMS-GFK-HCO LINE. WHEN COMPARING ATMOSPHERIC CONDITIONS
TO MODEL INITIALIZATIONS...AVN CLOSEST. SURFACE BOUNDARY MOVES
SLIGHTLY E TODAY...KEEPING THETA-E RIDGE...GOOD INSTABILITY...MID
LEVEL LIFT...SURFACE MOISTURE CONVERGENCE...OVER MUCH OF AREA.
CONSIDERING THAT MODEL SOUNDINGS HAVE CAPES FROM 2000-3000 WITH NO
CAP OVER AREA BY LATE AFTERNOON...ADDITIONAL THUNDERSTORMS...SOME
WITH HEAVY RAIN ARE LIKELY THROUGH THE REMAINDER OF TODAY...WITH THE
POTENTIAL FOR SOME SEVERE STORMS AS DAYTIME HEATING INCREASES. ALL
IN ALL...CURRENT FORECAST PRETTY WELL IN HAND...WITH ONLY MINOR
CHANGES NEEDED.

.FGF...NONE.

NG

Severe Thunderstorm Warnings in Minnesota, 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.