Severe Thunderstorm Warning 259, NWS Grand Forks, ND

Issued

Aug 7, 2001, 11:51 PM CDT (04:51 UTC)

Expired

Aug 8, 2001, 12:30 AM CDT

In force

39 min

Issued by

NWS Grand Forks, ND

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Griggs County, ND, Steele County, ND

The Fargo/Grand Forks radar (KMVX), 58 km from the middle of the area, began a volume at 04:54 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.

084 
WUUS53 KFGF 080451
SVRFAR
NDC039-091-080530-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1151 PM CDT TUE AUG 7 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA AND
  WESTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 1230 AM CDT.

* AT 1148 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER JESSIE...OR ABOUT 43 MILES NORTH OF VALLEY
  CITY...MOVEMENT WAS TO THE EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  COOPERSTOWN AT MIDNIGHT CDT...
  FINLEY AT 1225 AM CDT AND
  BLABON AT 1230 AM CDT.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT
WEDNESDAY MORNING FOR EASTERN NORTH DAKOTA.

LAT...LON 4764 9831 4746 9838 4732 9779 4753 9769


$$
DTR

NNNN

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 7, 8:25 PM CDT, 3 hours 26 minutes earlier.

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
825 PM CDT TUE AUG 7 2001

FCST CHALLENGE OVERNIGHT...COVERAGE/INTENSITY AND LOCATION OF CONVECTION.

EARLY EVE SFC MAP SHOWS LOW IN SE SASK WITH WARM FRONT INTO FAR SRN
MB AND TROUGH THROUGH FAR ERN MT.  ACTUAL COLD FRONT FARTHER WEST
DROPPING SOUTH THROUGH SRN ALBERTA.  SATELLITE ALONG WITH 70H TEMPS
WOULD INDICATE NRN EDGE OF CAP EXTENDS JUST NORTH OF A BIS-FAR-BJI
LINE.  SFC MAP ALSO SHOWS WK TROUGH ALONG THIS AXIS AS WELL.

FIRST BATCH OF ELEVATED WEAK CONVECTION THAT WAS NR MINOT LATE
THIS AFTN HAS MOVED EAST AND FALLEN APART AS IT APPROACHED WRN
CWFA.  STRONGER TSRA THAT GOT GOING IN ERN MT NOW MOVING EAST AND
LOCATED BTWN MOT/BIS.  NO SVR YET.  18Z MESO ETA INDICATES 35-40KT
LOW LEVEL JET WILL GET GOING BY 06Z WITH NOSE IN NCNTRL ND AND THEN
IT MOVES OVR THE NE ND/NW MN AND SRN IN THE 09-12Z TIME FRAME.  THUS
EXPECT SOME EVOLUTION OF TSRA IN WRN ND/ERN MT INTO A LARGER COMPLEX
AS THE NIGHT PROGRESSES.

GOING FCST AND BREAKUP LOOK GOOD WITH HIGHEST POPS NRN ZONES (NORTH
OF TROUGH) AND NO POPS IN THE FAR SOUTH WHERE CAP WILL REMAIN.

AS FOR THE HEAT ADVISORY...MUCH OF ERN ND AND A FEW PLACES IN NW MN
REACHED 105F LATE THIS AFTN...AND WITH DEW PTS CLIMBING INTO THE
UPPER 70S OVERNIGHT EXPECT HEAT INDICES TO REMAIN ABV 80F TONIGHT.
THUS WILL MAINTAIN CURRENT HEAT ADVISORY LOCATION FOR TONIGHT.

WILL RE-ISSUE NEW NPWFAR AND ZONES SHORTLY AFTER 9 PM.

.FGF...HEAT ADVISORY ALL CWFA EXCEPT WC MN TONIGHT.

RIDDLE

Severe Thunderstorm Warnings in North Dakota, 2001Every severe thunderstorm warning in 2001

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.