Alert archive / Montana / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 482
The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2006, 2:45 PM MDT for 7 counties in Montana. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2006, 2:45 PM MDT (20:45 UTC)
- Expired
- Jun 14, 2006, 5:21 PM MDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
Counties Big Horn County, MT, Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT, Rosebud County, MT, Treasure County, MT
The radar
The Billings radar (KBLX), 192 km from the middle of the area, began a volume at 20:47 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 3:12 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 63 min |
| Jun 14, 3:24 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 41 min |
| Jun 14, 4:10 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 57 min |
| Jun 14, 4:18 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 57 min |
| Jun 14, 5:11 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 64 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 8.8 hours before the alert went out and 240 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
- 1010 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 10:36 AM MDT | Mesoscale Discussion | SPC | Big Horn, Carbon, Golden Valley, Musselshell, Rosebud, Treasure and 1 more | 84 min |
| Jun 14, 11:12 AM MDT | Severe Thunderstorm Watch | SPC | Big Horn, Carbon, Golden Valley, Musselshell, Park, Stillwater and 4 more | 4 hr |
| Jun 14, 2:32 PM MDT | Mesoscale Discussion | SPC | Big Horn, Blaine, Carbon, Chouteau, Custer, Fergus and 13 more | 28 min |
| Jun 14, 4:47 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Dawson, Fallon, Prairie, Wibaux | 88 min |
| Jun 14, 5:14 PM MDT | Tornado Watch | SPC | Carter, Custer, Dawson, Fallon, McCone, Prairie and 2 more | 8 hr |
Nearby
Severe Thunderstorm Watches in Montana, 2006Every severe thunderstorm watch in 2006
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.