Alert archive / Montana / Wind Chill Advisories in 2017

Wind Chill Advisory 8, NWS Glasgow, MT

February 7, 201712 counties in Montana

NWS Glasgow, MT issued this wind chill advisory at Feb 7, 2017, 2:05 PM MST for 12 counties in Montana. It took effect at Feb 7, 2017, 5:00 PM MST. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Feb 7, 2017, 2:05 PM MST (21:05 UTC)
In effect from: Feb 7, 2017, 5:00 PM MST
Expired: Feb 8, 2017, 1:00 PM MST
In force: 20 hr
Issued by: NWS Glasgow, MT

Counties Daniels County, MT, Dawson County, MT, Garfield County, MT, McCone County, MT, Petroleum County, MT, Phillips County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Valley County, MT, Wibaux County, MT

The radar

The Glasgow radar (KGGW), 77 km from the middle of the area, began a volume at 21:05 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.1 hours before the alert went out and 402 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 819 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: -128 m²/s²
0-3 km storm-relative helicity: -66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Glasgow, MT wrote its last area forecast discussion before this wind chill advisory went out at Feb 7, 9:39 AM MST, 4 hours 26 minutes earlier.

Area forecast discussion, Feb 7, 9:39 AM MST, 4 hours 26 minutes before

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Hazardous weather outlook, Feb 7, 3:29 AM MST, 10 hours 36 minutes before

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In the hours before

Local storm report, Feb 7, 11:41 AM MST, 2 hours 24 minutes before

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Local storm report, Feb 7, 11:57 AM MST, 2 hours 8 minutes before

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Local storm report, Feb 7, 12:01 PM MST, 2 hours 4 minutes before

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Local storm report, Feb 7, 12:02 PM MST, 2 hours 3 minutes before

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Local storm report, Feb 7, 12:04 PM MST, 2 hours 1 minute before

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Local storm report, Feb 7, 12:06 PM MST, 1 hour 59 minutes before

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Nearby

Wind Chill Advisories in Montana, 2017 Every wind chill advisory in 2017

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.