Alert archive / Wisconsin / Blizzard Warnings in 2023

Blizzard Warning 1, NWS Duluth, MN

February 21, 2023Ashland County, Bayfield County, Wisconsin

NWS Duluth, MN issued this blizzard warning at Feb 21, 2023, 1:40 PM CST for Ashland County, Bayfield County, Wisconsin. It took effect at Feb 22, 2023, 6:00 PM CST. It was in force for 24 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 21, 2023, 1:40 PM CST (19:40 UTC)
In effect from: Feb 22, 2023, 6:00 PM CST
Expired: Feb 23, 2023, 6:00 PM CST
In force: 24 hr
Issued by: NWS Duluth, MN

Counties Ashland County, WI, Bayfield County, WI

The radar

The Duluth radar (KDLH), 100 km from the middle of the area, began a volume at 19:41 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.7 hours before the alert went out and 322 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: 920 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 184 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 blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this blizzard warning went out at Feb 21, 11:38 AM CST, 2 hours 2 minutes earlier.

Area forecast discussion, Feb 21, 11:38 AM CST, 2 hours 2 minutes before

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Hazardous weather outlook, Feb 21, 3:47 AM CST, 9 hours 53 minutes before

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In the hours before

Local storm report, Feb 21, 9:01 AM CST, 4 hours 39 minutes before

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Local storm report, Feb 21, 9:03 AM CST, 4 hours 37 minutes before

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Local storm report, Feb 21, 9:33 AM CST, 4 hours 7 minutes before

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Local storm report, Feb 21, 10:09 AM CST, 3 hours 31 minutes before

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Local storm report, Feb 21, 10:11 AM CST, 3 hours 29 minutes before

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Local storm report, Feb 21, 11:32 AM CST, 2 hours 8 minutes before

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The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 21, 3:04 AM CST	Wind Chill Advisory	DLH	Cook, Itasca, Koochiching, Lake, Saint Louis	31 hr
Feb 21, 3:04 AM CST	Winter Weather Advisory	DLH	Aitkin, Cass, Crow Wing, Itasca, Lake, Pine and 1 more	59 hr
Feb 21, 9:52 AM CST	Small Craft Advisory	DLH		26 hr
Feb 21, 1:40 PM CST	Winter Storm Warning	DLH	Aitkin, Carlton, Cass, Crow Wing, Pine, Saint Louis	52 hr
Feb 21, 1:45 PM CST	Lakeshore Flood Watch	DLH	Carlton, Saint Louis	32 hr
Feb 21, 2:25 PM CST	Gale Warning	DLH		52 hr
Feb 21, 2:25 PM CST	Heavy Freezing Spray Warning	DLH		52 hr
Feb 20, 9:03 PM CST	Winter Weather Advisory	DLH	Ashland, Iron	11 hr

Nearby

Blizzard Warnings in Wisconsin, 2023 Every blizzard warning in 2023

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.