Alert archive / South Dakota / Tornado Watches in 2001
Tornado Watch 383
The Storm Prediction Center issued this tornado watch at Jun 9, 2001, 2:45 PM MDT for Big Horn County, Carter County, Powder River County, Montana; 11 counties in South Dakota; 6 counties in Wyoming. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 9, 2001, 2:45 PM MDT (20:45 UTC)
- Expired
- Jun 9, 2001, 10:00 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
Counties Big Horn County, MT, Carter County, MT, Powder River County, MT, Bennett County, SD, Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Campbell County, WY, Crook County, WY, Johnson County, WY, Niobrara County, WY, Sheridan County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 115 km from the middle of the area, began a volume at 20:45 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 3:19 PM MDT | Severe Thunderstorm Warning | UNR | Crook | 56 min |
| Jun 9, 3:48 PM MDT | Severe Thunderstorm Warning | UNR | Weston | 57 min |
| Jun 9, 4:25 PM MDT | Severe Thunderstorm Warning | UNR | Lawrence | 65 min |
| Jun 9, 4:59 PM MDT | Severe Thunderstorm Warning | UNR | Custer | 61 min |
| Jun 9, 5:04 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 56 min |
| Jun 9, 5:50 PM MDT | Severe Thunderstorm Warning | UNR | Pennington | 55 min |
| Jun 9, 6:18 PM MDT | Severe Thunderstorm Warning | UNR | Jackson | 57 min |
| Jun 9, 7:02 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Jackson | 58 min |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 8.8 hours before the alert went out and 338 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
- 177 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1334 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jun 8, 8:15 PM MDT | Severe Thunderstorm Watch | SPC | Big Horn, Powder River, Rosebud, Treasure, Yellowstone | 5 hr |
| Jun 9, 11:45 AM MDT | Severe Thunderstorm Watch | SPC | Custer, Daniels, Dawson, Fallon, Garfield, McCone and 10 more | 6 hr |
| Jun 9, 2:45 PM MDT | Tornado Watch | SPC | Custer, Dawson, Fallon, Garfield, McCone, Prairie and 4 more | 7 hr |
| Jun 9, 3:00 PM MDT | Severe Thunderstorm Watch | SPC | Goshen, Laramie, Platte | 6 hr |
Nearby
Tornado Watches in South Dakota, 2001Tornado Watches in Wyoming, 2001Tornado Watches in Montana, 2001Every tornado 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.