Alert archive / North Dakota / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 633
The Storm Prediction Center issued this severe thunderstorm watch at Jul 26, 2001, 7:00 PM MDT for Fallon County, Montana; 30 counties in North Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 26, 2001, 7:00 PM MDT (01:00 UTC)
- Expired
- Jul 27, 2001, 1:00 AM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Fallon County, MT, Adams County, ND, Benson County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burleigh County, ND, Cavalier County, ND, Dunn County, ND, Eddy County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, McHenry County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Towner County, ND, Ward County, ND, Wells County, ND
The radar
The Bismarck radar (KBIS), 95 km from the middle of the area, began a volume at 01:02 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 7:45 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 75 min |
| Jul 26, 7:46 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 59 min |
| Jul 26, 8:06 PM MDT | Tornado Warning | BIS | Grant | 24 min |
| Jul 26, 8:26 PM MDT | Flash Flood Warning | BIS | Bowman, Grant, Hettinger | 3 hr |
| Jul 26, 8:39 PM MDT | Tornado Warning | BIS | Grant | 51 min |
| Jul 26, 9:15 PM MDT | Flash Flood Warning | BIS | Bottineau | 3 hr |
| Jul 26, 9:31 PM MDT | Flash Flood Warning | BIS | Burleigh, Morton | 3 hr |
| Jul 26, 10:17 PM MDT | Flash Flood Warning | BIS | Rolette | 3 hr |
| Jul 26, 11:18 PM MDT | Flash Flood Warning | BIS | Burleigh, Grant, Hettinger, Morton | 6 hr |
| Jul 27, 12:02 AM MDT | Flash Flood Warning | BIS | Bottineau, Rolette | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.0 hours before the alert went out and 99 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
- 1482 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 906 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
Nearby
Severe Thunderstorm Watches in North Dakota, 2001Severe Thunderstorm Watches in Montana, 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; radar from the NEXRAD Level II archive.