Alert archive / Montana / Heavy Snow Warnings in 2008
Heavy Snow Warning 9, NWS Missoula, MT
NWS Missoula, MT issued this heavy snow warning at Feb 8, 2008, 9:47 AM MST for 5 counties in Montana; Clearwater County, Idaho County, Lemhi County, Idaho. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 8, 2008, 9:47 AM MST (16:47 UTC)
- Expired
- Feb 9, 2008, 3:44 AM MST
- In force
- 18 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Lemhi County, ID, Granite County, MT, Mineral County, MT, Missoula County, MT, Ravalli County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 78 km from the middle of the area, began a volume at 16:52 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
Spokane, WA (KOTX), launched 12:00Z, 4.8 hours before the alert went out and 193 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
- 773 m above ground
- 0-6 km bulk shear
- 99 kt
- 0-1 km storm-relative helicity
- 428 m²/s²
- 0-3 km storm-relative helicity
- 481 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heavy snow warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before this heavy snow warning went out at Feb 8, 8:58 AM MST, 49 minutes earlier.
Area forecast discussion, Feb 8, 8:58 AM MST, 49 minutes before
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</html>Hazardous weather outlook, Feb 8, 4:03 AM MST, 5 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MISSOULA MT 403 AM MST FRI FEB 8 2008 IDZ005>007-MTZ001-004-090000- NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS- OROFINO/GRANGEVILLE REGION-KOOTENAI/CABINET REGION- LOWER CLARK FORK REGION- 403 AM MST FRI FEB 8 2008 /303 AM PST FRI FEB 8 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO...NORTHWEST MONTANA AND WEST CENTRAL MONTANA. FOR THE LATEST INFORMATION ON WATCHES...WARNINGS AND ADVISORIES...GO TO WEATHER.GOV/MISSOULA. .DAY ONE...TODAY AND TONIGHT LOWER ELEVATION SITES...MAINLY IN NORTH CENTRAL IDAHO...MAY SEE AFTERNOON RAIN TODAY. THIS WILL ADD ADDITIONAL WEIGHT TO SNOW ATOP BUILDINGS AND STRUCTURES. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SOUTHERLY WINDS ON SUNDAY WILL BRING WARMER AIR INTO THE AREA. SNOW LEVELS WILL RISE CREATING THE POTENTIAL FOR RAIN THROUGH THE BEGINNING OF THE WEEK. RAINFALL ON SNOW MAY OCCUR WITH SNOW LOADING BEING THE MAIN CONCERN. ADDITIONAL WEIGHT WILL ADD STRESS TO BUILDINGS AND STRUCTURES. ALSO...MOUNTAIN SNOWPACK MAY BECOME UNSTABLE WITH THE ADDITIONAL WEIGHT. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. IDZ008>010-MTZ002-003-005>007-043-090000- LOWER HELLS CANYON/SALMON RIVER REGION-WESTERN LEMHI COUNTY- EASTERN LEMHI COUNTY-WEST GLACIER REGION-FLATHEAD/MISSION VALLEYS- MISSOULA/BITTERROOT VALLEYS-BITTERROOT/SAPPHIRE MOUNTAINS- BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION- 403 AM MST FRI FEB 8 2008 /303 AM PST FRI FEB 8 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IDAHO...NORTHWEST MONTANA AND WEST CENTRAL MONTANA. .DAY ONE...TODAY AND TONIGHT MOIST WESTERLY FLOW WILL BRING MAINLY MOUNTAIN SNOW TO THE REGION. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ENERGETIC WESTERLY FLOW WILL CONTINUE TO BRING MAINLY MOUNTAIN SNOW TO THE REGION INTO NEXT WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 8, 8:32 AM MST | Blowing Snow Advisory | MSO | Deer Lodge, Granite, Powell, Silver Bow | 13 hr |
| Feb 8, 2:48 PM MST | Winter Storm Warning | MSO | Flathead, Lake | 24 hr |
Nearby
Heavy Snow Warnings in Montana, 2008Heavy Snow Warnings in Idaho, 2008Every heavy snow warning in 2008
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.