Severe Thunderstorm Warning 290, NWS Grand Forks, ND

Issued

Aug 28, 2002, 1:15 PM CDT (18:15 UTC)

Expired

Aug 28, 2002, 2:00 PM CDT

In force

45 min

Issued by

NWS Grand Forks, ND

Area

Counties, with a storm outline in the text

County Clearwater County, MN

The Fargo/Grand Forks radar (KMVX), 146 km from the middle of the area, began a volume at 18:17 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.

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.

246 
WUUS53 KFGF 281815
SVRFAR
MNC029-281900-

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

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  SOUTHERN CLEARWATER COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 200 PM CDT.

* AT 112 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES SOUTHWEST OF ZERKEL...OR ABOUT 32 MILES
  SOUTHWEST OF BEMIDJI...MOVEMENT WAS TO THE EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  ZERKEL AT 120 PM...
  UPPER RICE LAKE AT 125 PM AND
  ALIDA AT 130 PM.

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

LAT...LON 4737 9555 4717 9553 4720 9524 4741 9521


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, 2 hours 50 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

In the hours before

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-281400-

SPECIAL WEATHER STATEMENT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
732 AM CDT WED AUG 28 2002

...SEVERE THUNDERSTORMS WILL OCCUR TODAY AND TONIGHT ACROSS EASTERN
NORTH DAKOTA AND WEST CENTRAL AND NORTHWEST MINNESOTA...

SYNOPSIS...MOIST UNSTABLE AIR REMAINS ACROSS THE RED RIVER VALLEY.
AN UPPER LEVEL SYSTEM WILL MOVE ACROSS THE AREA AND CREATE THE
THREAT FOR SEVERE WEATHER.

AREA OF CONCERN...A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED
SOUTH OF A LINE FROM DEVILS LAKE TO GRAFTON TO BAUDETTE MINNESOTA.

TIME...THROUGHOUT THE DAY HOWEVER MOST LIKELY AFTER 3PM AND
OVERNIGHT.

TYPE OF HAZARD...MAINLY LARGE HAIL. SOME DAMAGING WINDS AND LOCALLY
HEAVY RAINFALL..

HOPPES
NNNN

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.