Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 239, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 23, 2002, 5:44 PM CDT for Pembina County, North Dakota. It was in force for 46 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
- Aug 23, 2002, 5:44 PM CDT (22:44 UTC)
- Expired
- Aug 23, 2002, 6:30 PM CDT
- In force
- 46 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), 146 km from the middle of the area, began a volume at 22:47 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 |
|---|---|---|---|
| Aug 23, 6:00 PM CDT | Hail 0.88 | Concrete, 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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.7 hours before the alert went out and 321 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 855 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
460 WUUS53 KFGF 232244 SVRFAR NDC067-232330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 544 PM CDT FRI AUG 23 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA. * UNTIL 630 PM CDT. * AT 541 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES WEST OF AKRA...OR ABOUT 21 MILES EAST OF LANGDON...MOVEMENT WAS TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LEROY AT 550 PM... AKRA AT 600 PM... HENSEL AT 610 PM AND BATHGATE AT 620 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4893 9790 4873 9789 4858 9740 4894 9729 30 NNNN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 4:52 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 38 min |
| Aug 23, 5:07 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 38 min |
| Aug 23, 5:30 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 45 min |
| Aug 23, 5:42 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 48 min |
| Aug 23, 6:13 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 47 min |
| Aug 23, 6:20 PM CDT | Tornado Warning | FGF | Pembina | 40 min |
| Aug 23, 6:32 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey | 43 min |
| Aug 23, 6:43 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 47 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; radar from the NEXRAD Level II archive.