Alert archive / Idaho / Winter Weather Advisories in 2012
Winter Weather Advisory 29, NWS Missoula, MT
NWS Missoula, MT issued this winter weather advisory at Mar 28, 2012, 8:12 AM MDT for Lemhi County, Idaho. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Mar 28, 2012, 8:12 AM MDT (14:12 UTC)
- Expired
- Mar 28, 2012, 5:13 PM MDT
- In force
- 9 hr
- Issued by
- NWS Missoula, MT
County Lemhi County, ID
The radar
The Pocatello radar (KSFX), 227 km from the middle of the area, began a volume at 14:15 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
Boise Airport, ID (KBOI), launched 12:00Z, 2.2 hours before the alert went out and 236 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
- 5 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 1101 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 57 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 Mar 28, 3:56 AM MDT, 4 hours 16 minutes earlier.
Area forecast discussion, Mar 28, 3:56 AM MDT, 4 hours 16 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 |
|---|---|---|---|---|
| Mar 28, 1:30 PM MDT | Special Weather Statement | MSO | Lake | 60 min |
| Mar 28, 2:00 PM MDT | Special Weather Statement | MSO | Granite, Missoula | 60 min |
Nearby
Winter Weather Advisories in Idaho, 2012Every winter weather advisory 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.