Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 78, NWS Grand Forks, ND

June 22, 2002Benson County, Ramsey County, Towner County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 22, 2002, 6:12 AM CDT for Benson County, Ramsey County, Towner County, North Dakota. It was in force for 48 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 22, 2002, 6:12 AM CDT (11:12 UTC)
Expired
Jun 22, 2002, 7:00 AM CDT
In force
48 min
Issued by
NWS Grand Forks, ND
Area
Counties, with a storm outline in the text

Counties Benson County, ND, Ramsey County, ND, Towner County, ND

What was reported inside it

TimeReportWhereRemark
Jun 22, 6:25 AM CDTHail 0.75Devils Lake, ND
Jun 22, 6:30 AM CDTHail 1Cando, ND
Jun 22, 6:35 AM CDTHail 0.88Leeds, 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.

Did it verify

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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 11.2 hours before the alert went out and 206 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2002-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 643 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2002-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
643 J/kg
Mixed-layer CIN
-239 J/kg
Mixed-layer LCL
1784 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KFGF 221112
SVRFAR
NDC005-071-095-221200-

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

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

   BENSON COUNTY IN NORTHEAST NORTH DAKOTA...RAMSEY COUNTY IN        
   NORTHEAST NORTH DAKOTA AND TOWNER COUNTY IN NORTHEAST NORTH       
   DAKOTA.

* UNTIL 700 AM CDT.

* AT 610 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES SOUTH OF BRINSMADE...OR ABOUT 22 MILES
  WEST OF DEVILS LAKE...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  BRINSMADE AT 615 AM...
  CAMP GRAFTON AT 630 AM...
  CHURCHS FERRY AT 635 AM AND
  PENN AT 640 AM.

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

LAT...LON 4813 9949 4799 9855 4841 9874 4884 9945


BERG

NNNN

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 1:45 AM CDT, 4 hours 27 minutes earlier.

Area forecast discussion, Jun 22, 1:45 AM CDT, 4 hours 27 minutes before
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

In the hours before

Special weather statement, Jun 22, 5:36 AM CDT, 36 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-221400-

SPECIAL WEATHER STATEMENT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
536 AM CDT SAT JUN 22 2002

...SCATTERED SEVERE THUNDERSTORMS POSSIBLE ACROSS EASTERN NORTH
DAKOTA AND NORTHWESTERN MINNESOTA TODAY AND TONIGHT...

SYNOPSIS...A LOW PRESSURE AREA OVER SOUTH DAKOTA WITH A WARM
EXTENDING EASTWARD INTO CENTRAL MINNESOTA WILL CONTINUE TO INTENSIFY
TODAY. LOW LEVEL MOISTURE AND INSTABILITY WILL PUSH NORTHWARD OVER
THE FRONT SETTING THE STAGE FOR SCATTERED SEVERE THUNDERSTORMS.

AREA OF CONCERN...ALL OF EASTERN NORTH DAKOTA...NORTHWESTERN AND
WEST CENTRAL MINNESOTA.

TIME...6 AM THROUGH 3 PM AND THEN AGAIN DURING THE LATE EVENING INTO
THE OVERNIGHT HOURS.

TYPE OF HAZARD...LARGE HAIL IS THE PRIMARY HAZARD WITH ISOLATED
TORNADOES POSSIBLE NEAR THE WARM FRONT IN SOUTHEASTERN NORTH DAKOTA
AND WEST CENTRAL MINNESOTA. LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE.

BRAMER

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 22, 5:23 AM CDTSevere Thunderstorm WarningFGFBenson, Ramsey52 min
Jun 22, 6:43 AM CDTSevere Thunderstorm WarningFGFNelson, Walsh47 min
Jun 22, 7:16 AM CDTFlash Flood WarningFGFBenson, Cavalier, Ramsey, Towner8 hr
Jun 22, 7:20 AM CDTFlash Flood WarningFGFBenson, Cavalier, Ramsey, Towner8 hr
Jun 22, 7:24 AM CDTSevere Thunderstorm WarningFGFPembina, Walsh51 min
Jun 22, 7:29 AM CDTSevere Thunderstorm WarningFGFNelson31 min
Jun 22, 7:46 AM CDTFlash Flood WarningFGFPembina, Walsh8 hr
Jun 22, 8:14 AM CDTFlash Flood WarningFGFNelson6 hr
Jun 22, 8:29 AM CDTSevere Thunderstorm WarningFGFWalsh46 min
Jun 22, 9:11 AM CDTSevere Thunderstorm WarningFGFWalsh49 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2002Every severe thunderstorm warning in 2002

Sources

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.