Alert archive / North Dakota / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 659
The Storm Prediction Center issued this severe thunderstorm watch at Aug 7, 2001, 10:00 PM CDT for 26 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2001, 10:00 PM CDT (03:00 UTC)
- Expired
- Aug 8, 2001, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 26 counties
Benson County, ND, Bottineau County, ND, Burke County, ND, Cavalier County, ND, Dunn County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, McHenry County, ND, McLean County, ND, Mercer County, ND, Mountrail County, ND, Nelson County, ND, Oliver County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Steele County, ND, Towner County, ND, Walsh County, ND, Ward County, ND, Wells County, ND
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 10:02 PM CDT | Severe Thunderstorm Warning | BIS | Foster | 43 min |
| Aug 7, 10:05 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail | 25 min |
| Aug 7, 10:34 PM CDT | Severe Thunderstorm Warning | BIS | Wells | 56 min |
| Aug 7, 11:09 PM CDT | Severe Thunderstorm Warning | BIS | Foster, Stutsman | 66 min |
| Aug 7, 11:51 PM CDT | Severe Thunderstorm Warning | FGF | Griggs, Steele | 39 min |
| Aug 8, 12:26 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Steele, Traill | 64 min |
| Aug 8, 2:30 AM CDT | Severe Thunderstorm Warning | BIS | McHenry, Ward | 60 min |
| Aug 8, 2:45 AM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 30 min |
| Aug 8, 3:12 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 48 min |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 3.0 hours before the alert went out and 155 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
- 6234 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 2004 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 15.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Richland, Traill | 5 hr |
| Aug 8, 6:00 PM CDT | Tornado Watch | SPC | Barnes, Benson, Cass, Cavalier, Eddy, Foster and 12 more | 5 hr |
Nearby
Severe Thunderstorm Watches in North Dakota, 2001Every severe thunderstorm watch in 2001
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.