Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 78, NWS Grand Forks, ND
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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 6:25 AM CDT | Hail 0.75 | Devils Lake, ND | |
| Jun 22, 6:30 AM CDT | Hail 1 | Cando, ND | |
| Jun 22, 6:35 AM CDT | Hail 0.88 | Leeds, 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.
- 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
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 5:23 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 52 min |
| Jun 22, 6:43 AM CDT | Severe Thunderstorm Warning | FGF | Nelson, Walsh | 47 min |
| Jun 22, 7:16 AM CDT | Flash Flood Warning | FGF | Benson, Cavalier, Ramsey, Towner | 8 hr |
| Jun 22, 7:20 AM CDT | Flash Flood Warning | FGF | Benson, Cavalier, Ramsey, Towner | 8 hr |
| Jun 22, 7:24 AM CDT | Severe Thunderstorm Warning | FGF | Pembina, Walsh | 51 min |
| Jun 22, 7:29 AM CDT | Severe Thunderstorm Warning | FGF | Nelson | 31 min |
| Jun 22, 7:46 AM CDT | Flash Flood Warning | FGF | Pembina, Walsh | 8 hr |
| Jun 22, 8:14 AM CDT | Flash Flood Warning | FGF | Nelson | 6 hr |
| Jun 22, 8:29 AM CDT | Severe Thunderstorm Warning | FGF | Walsh | 46 min |
| Jun 22, 9:11 AM CDT | Severe Thunderstorm Warning | FGF | Walsh | 49 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.