Severe Thunderstorm Warning 77, NWS Grand Forks, ND

Issued

Jun 22, 2002, 5:23 AM CDT (10:23 UTC)

Expired

Jun 22, 2002, 6:15 AM CDT

In force

52 min

Issued by

NWS Grand Forks, ND

Area

Counties, with a storm outline in the text

Counties Benson County, ND, Ramsey County, ND

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.

000 
WUUS53 KFGF 221023
SVRFAR
NDC005-071-221115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
523 AM CDT SAT JUN 22 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  SOUTHEASTERN BENSON COUNTY IN NORTHEAST NORTH DAKOTA AND
  SOUTHERN RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA.

* UNTIL 615 AM CDT.

* AT 513 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES SOUTHWEST OF TOKIO...OR ABOUT 20 MILES
  SOUTH OF DEVILS LAKE...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  TOKIO AT 535 AM...
  ST MICHAEL AT 540 AM...
  CRARY AT 605 AM AND
  DOYON AT 615 AM.

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

LAT...LON 4788 9904 4790 9858 4829 9846 4822 9867


BERG

NNNN

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 1:45 AM CDT, 3 hours 38 minutes earlier.

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
145 AM CDT SAT JUN 22 2002

...MAIN FORECAST CHALLENGE CONTINUES TO FOCUS ON IMPENDING
CONVECTIVE AND HEAVY RAIN THREAT AND RESULTANT HEADLINES...

.CURRENT OBSERVATIONAL OVERVIEW...
06Z MSAS ANALYSIS DEPICTED BROAD AREA OF LOW PRESSURE FROM SOUTHEAST
MONTANA TO WESTERN SOUTH DAKOTA WITH ASSOCIATED WARM FRONT DRAPED
OVER CENTRAL SOUTH DAKOTA. LATEST IR SATELLITE IMAGERY AND RADAR
MOSAIC INDICATED CONVECTIVE COMPLEX DEVELOPING OVER EASTERN MONTANA
OCCURRING IN THE VICINITY OF STRONG MOISTURE FLUX CONVERGENCE AND
EASTERLY UPSLOPE FLOW INFLUX. KMVX VAD WIND PROFILE INDICATED 30
KTS JUST OFF THE SURFACE WITH GOOD VEERING OF WINDS IN THE LOWER
GATES.

.FORECAST DETAILS...
MODELS CONTINUE TO ADVERTISE PERIODIC PIECES OF SHORTWAVE ENERGY
I.E. RIDGE RIDERS EJECTING NORTHEAST OUT OF PARENT WESTERN MEAN
UPPER LEVEL TROUGH INTO THE NORTHERN PLAINS VICINITY DURING THE
NEXT 48 TO 60 HOURS. IN LAYMENS TERMS EXPECT PERIODIC CONVECTIVE
(MCVS) ESPECIALLY NOCTURNAL IN NATURE TO WORK EAST ACROSS THE
NORTHERN PLAINS INTO SUNDAY. FEATURES WILL HAVE THE POTENTIAL TO
PRODUCE VERY HEAVY RAINS AS MOISTURE LADEN ACTIVE 850MB LOW LEVEL
JET INFLUX FLOWS PERPENDICULAR TO AFOREMENTIONED WARM FRONT
BOUNDARY. BASED ON ABOVE WILL CONTINUE FLOOD WATCH FOR ENTIRE CWA.
IN ADDITION GOOD THERMO AND UPPER LEVEL DYNAMIC SUPPORT SUGGESTS
SOME STORMS HAVE THE POTENTIAL TO BE SEVERE WITH BEST CHANCES FOR
ISOLATED TORNADOS IN CLOSE PROXIMITY TO WARM FRONTAL BOUNDARY. SEE
SWODY1 FOR FURTHER DETAILS.

.FGF...FLOOD WATCH ENTIRE FA THROUGH SUNDAY.

BERG

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.