Alert archive / Montana / Wind Chill Advisories in 2011
Wind Chill Advisory 8, NWS Billings, MT
NWS Billings, MT issued this wind chill advisory at Feb 7, 2011, 4:20 PM MST for 6 counties in Montana. It took effect at Feb 7, 2011, 5:00 PM MST. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Feb 7, 2011, 4:20 PM MST (23:20 UTC)
- In effect from
- Feb 7, 2011, 5:00 PM MST
- Expired
- Feb 8, 2011, 2:43 AM MST
- In force
- 10 hr
- Issued by
- NWS Billings, MT
Counties 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), 226 km from the middle of the area, began a volume at 23:19 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
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.3 hours before the alert went out and 257 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
- 615 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Billings, MT wrote its last area forecast discussion before this wind chill advisory went out at Feb 7, 3:15 PM MST, 1 hour 5 minutes earlier.
Area forecast discussion, Feb 7, 3:15 PM MST, 1 hour 5 minutes before
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</html>Hazardous weather outlook, Feb 7, 4:20 PM MST, 0 minutes before
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Wind Chill Advisories in Montana, 2011Every wind chill 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.