Alert archive / Montana / Special Weather Statements in 2012
Special Weather Statement, NWS Missoula, MT
NWS Missoula, MT issued this special weather statement at Jun 23, 2012, 4:21 PM MDT. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2012, 4:21 PM MDT (22:21 UTC)
- Expired
- Jun 23, 2012, 5:15 PM MDT
- In force
- 54 min
- Issued by
- NWS Missoula, MT
The radar
The Missoula radar (KMSX), 67 km from the middle of the area, began a volume at 22:22 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.
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 10.4 hours before the alert went out and 196 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
- 17 J/kg
- Mixed-layer CIN
- -497 J/kg
- Mixed-layer LCL
- 1162 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
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
535
WWUS85 KMSO 232221
SPSMSO
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
421 PM MDT SAT JUN 23 2012
MTZ007-043-232315-
BLACKFOOT REGION-BUTTE/PINTLAR REGION-
421 PM MDT SAT JUN 23 2012
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN POWELL COUNTY UNTIL
515 PM MDT...
AT 417 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES NORTHWEST OF OVANDO...OR 31 MILES NORTH
OF DRUMMOND...MOVING NORTH AT 30 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS
STORM...ALONG WITH VERY HEAVY RAIN.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MAINLY RURAL AREAS
OF NORTHERN POWELL COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY
AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL
PROTECTED AREA.
&&
LAT...LON 4703 11321 4701 11330 4718 11330 4718 11341
4760 11320 4761 11315 4757 11310 4749 11311
4748 11305 4725 11305
TIME...MOT...LOC 2221Z 201DEG 28KT 4714 11327
$$The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 2:43 PM MDT | Special Weather Statement | MSO | Granite | 47 min |
| Jun 23, 2:55 PM MDT | Red Flag Warning | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 30 hr |
| Jun 23, 2:56 PM MDT | Severe Thunderstorm Warning | MSO | Granite, Missoula, Ravalli | 64 min |
| Jun 23, 3:56 PM MDT | Special Weather Statement | MSO | Lincoln | 49 min |
| Jun 23, 4:25 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 31 min |
| Jun 23, 5:51 PM MDT | Special Weather Statement | MSO | Missoula | 39 min |
Nearby
Special Weather Statements in Montana, 2012Every special weather statement in 2012
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.