Severe Thunderstorm Warning 172, NWS Grand Forks, ND

Issued

Aug 8, 2002, 2:54 PM CDT (19:54 UTC)

Expired

Aug 8, 2002, 3:45 PM CDT

In force

51 min

Issued by

NWS Grand Forks, ND

Area

Counties, with a storm outline in the text

County Ramsey County, ND

The Fargo/Grand Forks radar (KMVX), 125 km from the middle of the area, began a volume at 19:57 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.

974 
WUUS53 KFGF 081954
SVRFAR
NDC071-082045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
254 PM CDT THU AUG 8 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA.

* UNTIL 345 PM CDT.

* AT 252 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES NORTHWEST OF SOUTHAM...OR ABOUT 12
  MILES NORTHEAST OF DEVILS LAKE...MOVEMENT WAS TO THE NORTHEAST AT
  20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  SOUTHAM AT 255 PM...
  LAWTON AT 330 PM AND
  EDMORE AT 335 PM.

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

LAT...LON 4823 9880 4810 9861 4830 9834 4848 9841


30
NNNN

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 10:20 AM CDT, 4 hours 34 minutes earlier.

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1020 AM CDT THU AUG 8 2002

FORECAST CHALLENGE FOR TODAY IS PRECIPITATION. LATEST SATELLITE
IMAGERY SHOWS TWO BANDS OF MID LEVEL CLOUDS...ONE OVER E ND AND
ANOTHER THROUGH NW MN COUNTIES. CURRENT MSAS SURFACE ANALYSIS SHOWS
FRONT EXTENDING THROUGH RED RIVER VALLEY. WHEN COMPARING MSAS DATA
TO MODEL INITIALIZATIONS...ETA BEST MATCH. FRONT STALLS OVER E PARTS
OF AREA THIS AFTERNOON AS BEST MID AND UPPER LEVEL LIFT HOLDS S AND
W OF AREA AWAITING ARRIVAL OF 500MB AND 700MB TROFS. WITH MUCH OF
AREA UNDER SUBSIDENCE THROUGH THE AFTERNOON...WILL PUSH BACK TIMING
OF THUNDERSTORMS TO LATE THIS AFTERNOON AND EVENING. WILL ALSO
REMOVE SEVERE WORDING FOR ND SIDE OF AREA...BUT KEEP IT IN FOR MN
SIDE. WITH PRECIPITABLE WATERS STILL OVER 1.5 INCHES AND POTENTIAL
FOR TRAINING OF STORMS...WILL KEEP FLOOD WATCH FOR PARTS OF MN SIDE.
OTHERWISE...ONLY MINOR CHANGES NEEDED TO REST OF FORECAST.

.FGF...FLOOD WATCH FOR PARTS OF NW AND WC MN TODAY.

NG

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.