Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 285, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 27, 2002, 9:14 PM CDT for Cavalier County, North Dakota. It was in force for 46 min. 2 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
- Aug 27, 2002, 9:14 PM CDT (02:14 UTC)
- Expired
- Aug 27, 2002, 10:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Cavalier County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 27, 9:30 PM CDT | Hail 0.88 | Calvin, ND | |
| Aug 27, 9:55 PM CDT | Hail 0.75 | Wales, 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.
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 27, 4:40 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.2 hours before the alert went out and 266 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
- 1222 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 2291 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
118 WUUS53 KFGF 280214 SVRFAR NDC019-280300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 914 PM CDT TUE AUG 27 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA. * UNTIL 1000 PM CDT. * AT 912 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES SOUTHWEST OF CALVIN...OR ABOUT 28 MILES WEST OF LANGDON...MOVEMENT WAS TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CALVIN AT 915 PM AND CLYDE AT 920 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM TUESDAY EVENING FOR NORTHWESTERN MINNESOTA AND NORTHEAST NORTH DAKOTA. LAT...LON 4891 9896 4869 9898 4863 9863 4883 9854 BERG NNNN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 7:47 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Pembina, Walsh | 58 min |
| Aug 27, 8:43 PM CDT | Severe Thunderstorm Warning | FGF | Pembina, Walsh | 47 min |
| Aug 27, 8:58 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 47 min |
| Aug 27, 9:35 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 40 min |
| Aug 27, 10:13 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 47 min |
| Aug 27, 10:29 PM CDT | Flash Flood Warning | FGF | Walsh | 4 hr |
| Aug 27, 10:43 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 47 min |
| Aug 27, 10:57 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 48 min |
| Aug 28, 4:30 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 45 min |
| Aug 28, 5:01 PM CDT | Tornado Warning | FGF | Richland | 44 min |
| Aug 28, 5:20 PM CDT | Severe Thunderstorm Warning | FGF | Steele, Traill | 40 min |
| Aug 28, 5:47 PM CDT | Tornado Warning | FGF | Richland | 43 min |
| Aug 28, 5:55 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 35 min |
| Aug 28, 6:14 PM CDT | Flash Flood Warning | FGF | Richland | 6 hr |
| Aug 28, 6:16 PM CDT | Flash Flood Warning | FGF | Richland | 6 hr |
| Aug 28, 6:44 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 61 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.