Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 88, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 22, 2002, 11:04 PM CDT for Sargent County, North Dakota. It was in force for 41 min. 1 report 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, 11:04 PM CDT (04:04 UTC)
- Expired
- Jun 22, 2002, 11:45 PM CDT
- In force
- 41 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Sargent County, ND
The radar
The Aberdeen radar (KABR), 97 km from the middle of the area, began a volume at 04:08 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 11:15 PM CDT | Hail 0.75 | Gwinner, 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
Aberdeen, SD (KABR), launched 00:00Z, 4.1 hours before the alert went out and 152 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
- 3369 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 2001 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 230404 SVRFAR NDC081-230445- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 1104 PM CDT SAT JUN 22 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 1145 PM CDT. * AT 1102 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF GWINNER...OR ABOUT 53 MILES WEST OF WAHPETON...MOVEMENT WAS TO THE NORTHEAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GWINNER AT 1120 PM AND MILNOR AT 1145 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4617 9788 4604 9770 4626 9729 4627 9779 55 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, 8:55 PM CDT, 2 hours 9 minutes earlier.
Area forecast discussion, Jun 22, 8:55 PM CDT, 2 hours 9 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
855 PM CDT SAT JUN 22 2002
LARGE SCALE CONVECTION STILL INCREASING ALONG NEARLY STATIONARY FRONT
FROM NORTH OF ABR TO JUST SOUTH OF FAR TO BJI. THREAT OF CONVECTION
ACROSS NORTH PART OF REGION HAS DECREASED SOME BUT MIGHT JUST DROP
PROBABILITY OF THUNDER TO SCATTERED CATEGORY AFTER MIDNIGHT DEPENDING
ON LOOK OF 00Z ETA. WILL OTHERWISE WILL CHANGE LITTLE IN ZONES EXCEPT
TO UPDATE HEADLINES AT 10 PM.
TRAINING THUNDERSTORMS ARE INCREASING FLOODING POTENTIAL...ESPECIALLY
FOR WILD RICE BASIN...AND MAHNOMEN...CLEARWATER...BELTRAMI COUNTIES.
.FGF...FLOOD WATCH ENTIRE FA THROUGH SUNDAY.
SEVERE THUNDERSTORM WATCH SOUTHEAST CORNER ND TIL 10 PM.
TORNADO WATCH NORTHERN MINNESOTA TIL 10 PM.In the hours before
Local storm report, Jun 22, 5:35 PM CDT, 5 hours 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
535 PM CDT SAT JUN 22 2002
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0635 AM 8 NE LEEDS ND .88 INCH HAIL
06/22/02 BENSON
0900 AM 1 NW TOLNA ND .75 INCH HAIL
06/22/02 NELSON
0910 AM PISEK ND .88 INCH HAIL
06/22/02 WALSH
0930 AM 1 E PISEK ND .75 INCH HAIL
06/22/02 WALSH
1000 AM FORDVILLE ND FLOODING
06/22/02 WALSH WATER FLOWING ACROSS HWY
32
1000 AM 1 N PETERSBURG ND .75 INCH HAIL
06/22/02 NELSON
0230 PM 6 N PEKIN ND FLOODING
06/22/02 NELSON WATER FLOWING ACROSS HWY 1
0310 PM ALIDA MN 1 INCH HAIL
06/22/02 CLEARWATER
0320 PM 3 SW BEMIDJI MN 1.25 INCH HAIL
06/22/02 BELTRAMI
0330 PM BEMIDJI MN 1.75 INCH HAIL
06/22/02 BELTRAMI
0337 PM 1 SW FARRIS MN .75 INCH HAIL
06/22/02 HUBBARDThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 10:30 PM CDT | Flash Flood Warning | FGF | Richland, Sargent | 5 hr |
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; radar from the NEXRAD Level II archive.