Alert archive / Montana / Winter Weather Advisories in 2011
Winter Weather Advisory 13, NWS Missoula, MT
NWS Missoula, MT issued this winter weather advisory at Jan 24, 2011, 10:51 PM MST for 8 counties in Montana; Idaho County, Idaho. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jan 24, 2011, 10:51 PM MST (05:51 UTC)
- Expired
- Jan 25, 2011, 10:49 AM MST
- In force
- 12 hr
- Issued by
- NWS Missoula, MT
Counties Idaho County, ID, Flathead County, MT, Granite County, MT, Lake County, MT, Lincoln County, MT, Mineral County, MT, Missoula County, MT, Ravalli County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 43 km from the middle of the area, began a volume at 05:54 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 00:00Z, 5.9 hours before the alert went out and 153 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
- 528 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory 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 winter weather advisory went out at Jan 24, 10:51 PM MST, 0 minutes earlier.
Area forecast discussion, Jan 24, 10:51 PM MST, 0 minutes before
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</html>The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 24, 5:51 PM MST | Freezing Rain Advisory | MSO | Flathead, Lincoln, Mineral, Missoula, Sanders | 5 hr |
Nearby
Winter Weather Advisories in Montana, 2011Winter Weather Advisories in Idaho, 2011Every winter weather advisory in 2011
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.