Alert archive / North Dakota / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 661
The Storm Prediction Center issued this severe thunderstorm watch at Aug 31, 2002, 9:55 PM CDT for 12 counties in Minnesota; 23 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2002, 9:55 PM CDT (02:55 UTC)
- Expired
- Sep 1, 2002, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Clay County, MN, Clearwater County, MN, Kittson County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 65 km from the middle of the area, began a volume at 02:59 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.
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 10:50 PM CDT | Severe Thunderstorm Warning | BIS | Dickey, LaMoure, Logan, McIntosh | 55 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 |
| Aug 31, 11:18 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 42 min |
| Aug 31, 11:46 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 44 min |
| Aug 31, 11:58 PM CDT | Severe Thunderstorm Warning | BIS | Dickey | 62 min |
| Sep 1, 12:02 AM CDT | Severe Thunderstorm Warning | FGF | Marshall | 43 min |
| Sep 1, 12:20 AM CDT | Severe Thunderstorm Warning | FGF | Polk | 40 min |
| Sep 1, 12:24 AM CDT | Severe Thunderstorm Warning | FGF | Pennington, Red Lake | 51 min |
| Sep 1, 12:28 AM CDT | Severe Thunderstorm Warning | FGF | Sargent | 47 min |
| Sep 1, 12:52 AM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 38 min |
| Sep 1, 1:16 AM CDT | Severe Thunderstorm Warning | FGF | Roseau | 29 min |
| Sep 1, 1:19 AM CDT | Severe Thunderstorm Warning | FGF | Richland | 41 min |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.9 hours before the alert went out and 205 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
- 1564 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 2744 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Kittson, Marshall, Pennington, Polk, Red Lake, Roseau | 5 hr |
| Sep 1, 12:45 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Benton, Carver, Chisago, Dakota, Hennepin and 17 more | 6 hr |
| Sep 1, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | Chippewa, Cottonwood, Jackson, Kandiyohi, Lac qui Parle, Lincoln and 9 more | 5 hr |
| Sep 1, 5:20 PM CDT | Severe Thunderstorm Watch | SPC | Blue Earth, Brown, Dodge, Faribault, Fillmore, Freeborn and 11 more | 6 hr |
| Sep 1, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Pine, Washington | 6 hr |
Nearby
Severe Thunderstorm Watches in North Dakota, 2002Severe Thunderstorm Watches in Minnesota, 2002Every severe thunderstorm watch 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.