Alert archive / South Dakota / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 610
The Storm Prediction Center issued this severe thunderstorm watch at Jul 22, 2001, 6:15 PM CDT for Lyon County, Osceola County, Sioux County, Iowa; 22 counties in Minnesota; 27 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 22, 2001, 6:15 PM CDT (23:15 UTC)
- Expired
- Jul 22, 2001, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 52 counties
Lyon County, IA, Osceola County, IA, Sioux County, IA, Big Stone County, MN, Chippewa County, MN, Cottonwood County, MN, Douglas County, MN, Grant County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Meeker County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Marshall County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Turner County, SD
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 22, 7:36 PM CDT | Severe Thunderstorm Warning | ABR | Codington | 24 min |
| Jul 22, 8:00 PM CDT | Severe Thunderstorm Warning | ABR | Codington | 45 min |
| Jul 22, 9:29 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle | 46 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 11.3 hours before the alert went out and 121 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
- 154 J/kg
- Mixed-layer CIN
- -533 J/kg
- Mixed-layer LCL
- 2009 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 22, 4:45 AM CDT | Severe Thunderstorm Watch | SPC | Clay, Norman, Pennington, Polk, Red Lake, Wilkin | 5 hr |
Nearby
Severe Thunderstorm Watches in South Dakota, 2001Severe Thunderstorm Watches in Minnesota, 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.