Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 331, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 31, 2002, 11:18 PM CDT for Pembina County, North Dakota. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2002, 11:18 PM CDT (04:18 UTC)
- Expired
- Sep 1, 2002, 12:00 AM CDT
- In force
- 42 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Pembina County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 144 km from the middle of the area, began a volume at 04:19 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 31, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 31, 9:55 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 4.3 hours before the alert went out and 313 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
- 2440 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 988 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
549 WUUS53 KFGF 010418 SVRFAR NDC067-010500- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 1117 PM CDT SAT AUG 31 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA. * UNTIL MIDNIGHT CDT. * AT 1114 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER CAVALIER...OR ABOUT 28 MILES NORTH OF GRAFTON...MOVEMENT WAS TO THE NORTHEAST AT 55 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BATHGATE AT 1120 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 400 AM SUNDAY MORNING FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA. LAT...LON 4885 9774 4869 9760 4866 9731 4901 9735 30 NNNN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 7:13 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 47 min |
| Aug 31, 7:22 PM CDT | Flash Flood Warning | FGF | Cavalier | 4 hr |
| Aug 31, 7:45 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 45 min |
| Aug 31, 7:56 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 34 min |
| Aug 31, 8:32 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 43 min |
| Aug 31, 8:42 PM CDT | Tornado Warning | FGF | Cavalier | 33 min |
| Aug 31, 8:53 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 52 min |
| Aug 31, 9:00 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Towner | 45 min |
| Aug 31, 9:11 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 49 min |
| Aug 31, 9:43 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey, Towner | 62 min |
| Aug 31, 9:47 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 43 min |
| Aug 31, 10:02 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 43 min |
| Aug 31, 10:07 PM CDT | Flash Flood Warning | FGF | Cavalier, Pembina | 3 hr |
| Aug 31, 10:20 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs | 55 min |
| Aug 31, 10:30 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 45 min |
| Aug 31, 10:45 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 45 min |
| Aug 31, 10:52 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 53 min |
| Aug 31, 11:15 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 30 min |
| Sep 1, 12:28 AM CDT | Severe Thunderstorm Warning | FGF | Sargent | 47 min |
| Sep 1, 1:19 AM CDT | Severe Thunderstorm Warning | FGF | Richland | 41 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.