Alert archive / Montana / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 422
The Storm Prediction Center issued this severe thunderstorm watch at Jun 9, 2000, 2:30 PM MDT for 12 counties in Montana; Big Horn County, Campbell County, Sheridan County, Wyoming. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 9, 2000, 2:30 PM MDT (20:30 UTC)
- Expired
- Jun 9, 2000, 8:00 PM MDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Big Horn County, MT, Custer County, MT, Dawson County, MT, Garfield County, MT, Musselshell County, MT, Petroleum County, MT, Powder River County, MT, Prairie County, MT, Rosebud County, MT, Treasure County, MT, Wibaux County, MT, Yellowstone County, MT, Big Horn County, WY, Campbell County, WY, Sheridan County, WY
The radar
The Billings radar (KBLX), 114 km from the middle of the area, began a volume at 20:31 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 |
|---|---|---|---|---|
| Jun 9, 2:41 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 64 min |
| Jun 9, 3:25 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 50 min |
| Jun 9, 3:27 PM MDT | Severe Thunderstorm Warning | UNR | Campbell | 48 min |
| Jun 9, 3:49 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 56 min |
| Jun 9, 4:10 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 50 min |
| Jun 9, 4:44 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 61 min |
| Jun 9, 5:34 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 56 min |
| Jun 9, 5:40 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 50 min |
| Jun 9, 6:18 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Powder River | 57 min |
| Jun 9, 7:34 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 56 min |
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.5 hours before the alert went out and 285 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2541 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 65 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, 6:45 PM MDT | Severe Thunderstorm Watch | SPC | Daniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more | 4 hr |
| Jun 9, 4:45 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Fallon | 5 hr |
Nearby
Severe Thunderstorm Watches in Montana, 2000Severe Thunderstorm Watches in Wyoming, 2000Every severe thunderstorm watch in 2000
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.