Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 182, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 8, 2002, 7:31 PM CDT for Grand Forks County, North Dakota; Polk County, Minnesota. It was in force for 44 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 8, 2002, 7:31 PM CDT (00:31 UTC)
- Expired
- Aug 8, 2002, 8:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
Counties Polk County, MN, Grand Forks County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 47 km from the middle of the area, began a volume at 00:33 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 8, 7:45 PM CDT | Thunderstorm Wind | Fisher, MN | Tree branches were blown down. |
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 8, 3:10 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.5 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
- 863 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1927 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
268 WUUS53 KFGF 090031 SVRFAR MNC119-NDC035-090115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 731 PM CDT THU AUG 8 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA AND WESTERN POLK COUNTY IN NORTHWEST MINNESOTA. * UNTIL 815 PM CDT. * AT 728 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES WEST OF ELDRED...OR ABOUT 17 MILES SOUTHEAST OF GRAND FORKS...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ELDRED AT 735 PM... BYGLAND AT 740 PM... FISHER AT 750 PM AND DAVIDSON AT 755 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. WIND GUSTS TO 70 MPH ARE POSSIBLE WITH THIS STORM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM THURSDAY EVENING FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA. LAT...LON 4776 9708 4761 9675 4780 9645 4806 9682 08 NNNN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 7:23 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 37 min |
| Aug 8, 7:30 PM CDT | Tornado Warning | FGF | Traill | 45 min |
| Aug 8, 8:37 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 38 min |
| Aug 8, 9:59 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 46 min |
| Aug 8, 10:34 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy | 41 min |
| Aug 8, 11:05 PM CDT | Severe Thunderstorm Warning | FGF | Griggs | 40 min |
| Aug 8, 11:15 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Nelson, Ramsey | 60 min |
| Aug 8, 11:26 PM CDT | Tornado Warning | FGF | Benson | 49 min |
| Aug 8, 11:29 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 46 min |
| Aug 9, 12:19 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey | 41 min |
| Aug 9, 12:21 AM CDT | Flash Flood Warning | FGF | Walsh | 6 hr |
| Aug 9, 12:24 AM CDT | Severe Thunderstorm Warning | FGF | Towner | 51 min |
| Aug 9, 12:56 AM CDT | Severe Thunderstorm Warning | FGF | Pembina | 49 min |
| Aug 9, 12:59 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 46 min |
| Aug 8, 7:19 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 41 min |
| Aug 8, 8:12 PM CDT | Tornado Warning | FGF | Polk | 48 min |
| Aug 8, 8:56 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 49 min |
| Aug 8, 10:13 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods | 47 min |
| Aug 8, 10:51 PM CDT | Severe Thunderstorm Warning | FGF | Kittson | 39 min |
| Aug 9, 12:08 AM CDT | Severe Thunderstorm Warning | FGF | Roseau | 52 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2002Severe Thunderstorm Warnings in Minnesota, 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.