Alert archive / Minnesota / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 601
The Storm Prediction Center issued this severe thunderstorm watch at Jul 21, 2001, 3:45 AM CDT for 23 counties in Minnesota; 6 counties in North Dakota; 5 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2001, 3:45 AM CDT (08:45 UTC)
- Expired
- Jul 21, 2001, 9:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 34 counties
Becker County, MN, Beltrami County, MN, Big Stone County, MN, Cass County, MN, Clay County, MN, Clearwater County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Koochiching County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Cass County, ND, Dickey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Traill County, ND, Brown County, SD, Day County, SD, Grant County, SD, Marshall County, SD, Roberts County, SD
The radar
The Fargo/Grand Forks radar (KMVX), 119 km from the middle of the area, began a volume at 08:44 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 21, 4:17 AM CDT | Severe Thunderstorm Warning | FGF | Clay, Wilkin | 58 min |
| Jul 21, 4:17 AM CDT | Severe Thunderstorm Warning | FGF | Norman | 58 min |
| Jul 21, 4:44 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom | 46 min |
| Jul 21, 4:53 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Mahnomen | 67 min |
| Jul 21, 4:53 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 67 min |
| Jul 21, 5:16 AM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 44 min |
| Jul 21, 5:16 AM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 44 min |
| Jul 21, 5:47 AM CDT | Severe Thunderstorm Warning | FGF | Grant | 58 min |
| Jul 21, 5:47 AM CDT | Severe Thunderstorm Warning | FGF | Hubbard, Wadena | 58 min |
| Jul 21, 5:59 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Otter Tail | 46 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 8.8 hours before the alert went out and 221 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
- 2936 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.9
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 |
|---|---|---|---|---|
| Jul 21, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Kittson | 5 hr |
| Jul 21, 10:30 AM CDT | Severe Thunderstorm Watch | SPC | Blue Earth, Cottonwood, Faribault, Freeborn, Jackson, Martin and 4 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2001Severe Thunderstorm Watches in North Dakota, 2001Severe Thunderstorm Watches in South 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; radar from the NEXRAD Level II archive.