Alert archive / Minnesota / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 612
The Storm Prediction Center issued this severe thunderstorm watch at Jul 23, 2001, 2:30 AM CDT for Dickinson County, Lyon County, Osceola County, Iowa; 34 counties in Minnesota; 14 counties in South Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2001, 2:30 AM CDT (07:30 UTC)
- Expired
- Jul 23, 2001, 9:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Dickinson County, IA, Lyon County, IA, Osceola County, IA, Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Cottonwood County, MN, Hennepin County, MN, Isanti County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Brookings County, SD, Charles Mix County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Hanson County, SD, Hutchinson County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD
The radar
The Sioux Falls radar (KFSD), 84 km from the middle of the area, began a volume at 07:32 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
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 3:13 AM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns | 47 min |
| Jul 23, 5:11 AM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet | 49 min |
| Jul 23, 5:17 AM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Isanti | 28 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 7.5 hours before the alert went out and 193 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
- 2747 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1276 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 13.2
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 |
|---|---|---|---|---|
| Jul 23, 6:00 AM CDT | Severe Thunderstorm Watch | SPC | Blue Earth, Chisago, Dakota, Dodge, Faribault, Fillmore and 13 more | 4 hr |
| Jul 22, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Harding, Perkins | 5 hr |
| Jul 23, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Custer, Fall River, Lawrence | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2001Severe Thunderstorm Watches in South Dakota, 2001Severe Thunderstorm Watches in Iowa, 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.