Alert archive / North Dakota / Wind Chill Advisories in 2020

Wind Chill Advisory 11, NWS Bismarck, ND

February 12, 202032 counties in North Dakota

NWS Bismarck, ND issued this wind chill advisory at Feb 12, 2020, 2:12 AM MST for 32 counties in North Dakota. It took effect at Feb 12, 2020, 5:00 AM MST. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Feb 12, 2020, 2:12 AM MST (09:12 UTC)
In effect from: Feb 12, 2020, 5:00 AM MST
Expired: Feb 13, 2020, 11:00 AM MST
In force: 30 hr
Issued by: NWS Bismarck, ND

All 32 counties

Adams County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burke County, ND, Burleigh County, ND, Dickey County, ND, Divide County, ND, Dunn County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Wells County, ND, Williams County, ND

The radar

The Bismarck radar (KBIS), 72 km from the middle of the area, began a volume at 09:12 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

Aberdeen, SD (KABR), launched 00:00Z, 9.2 hours before the alert went out and 348 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: 1801 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 224 m²/s²
0-3 km storm-relative helicity: 294 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 Bismarck, ND wrote its last area forecast discussion before this wind chill advisory went out at Feb 11, 10:49 PM MST, 3 hours 23 minutes earlier.

Area forecast discussion, Feb 11, 10:49 PM MST, 3 hours 23 minutes before

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Hazardous weather outlook, Feb 11, 10:48 PM MST, 3 hours 24 minutes before

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In the hours before

Special weather statement, Feb 11, 9:07 PM MST, 5 hours 5 minutes before

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Local storm report, Feb 12, 12:45 AM MST, 1 hour 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
145 AM CST WED FEB 12 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0144 AM     SNOW             WILLISTON               48.16N 103.63W
02/12/2020  M1.0 INCH        WILLIAMS           ND   CO-OP OBSERVER

&&

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 12, 5:02 AM MST	Wind Chill Warning	BIS	Rolette	6 hr
Feb 12, 1:05 PM MST	Wind Chill Warning	BIS	Dickey, Foster, Kidder, LaMoure, Logan, McIntosh and 4 more	19 hr

Nearby

Wind Chill Advisories in North Dakota, 2020 Every wind chill advisory in 2020

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.