Alert archive / Michigan / Winter Storm Warnings in 2020

Winter Storm Warning 5, NWS Marquette, MI

December 23, 2020Gogebic County, Michigan

NWS Marquette, MI issued this winter storm warning at Dec 23, 2020, 2:47 AM CST for Gogebic County, Michigan. It took effect at Dec 23, 2020, 4:00 PM CST. It was in force for 32 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: Dec 23, 2020, 2:47 AM CST (08:47 UTC)
In effect from: Dec 23, 2020, 4:00 PM CST
Expired: Dec 25, 2020, 12:00 AM CST
In force: 32 hr
Issued by: NWS Marquette, MI

County Gogebic County, MI

The radar

The Marquette radar (KMQT), 172 km from the middle of the area, began a volume at 08:48 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

Minneapolis, MN (KMPX), launched 00:00Z, 8.8 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: 1598 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 850 m²/s²
0-3 km storm-relative helicity: 949 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 winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Marquette, MI wrote its last area forecast discussion before this winter storm warning went out at Dec 22, 11:36 PM CST, 3 hours 11 minutes earlier.

Area forecast discussion, Dec 22, 11:36 PM CST, 3 hours 11 minutes before

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Hazardous weather outlook, Dec 22, 3:27 PM CST, 11 hours 20 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 23, 2:47 AM CST	Winter Weather Advisory	MQT	Alger, Baraga, Houghton, Keweenaw, Ontonagon	51 hr
Dec 23, 3:35 AM CST	Lakeshore Flood Warning	MQT	Schoolcraft	24 hr
Dec 23, 3:49 AM CST	Small Craft Advisory	MQT		4 days
Dec 23, 3:49 AM CST	Heavy Freezing Spray Warning	MQT		41 hr

Nearby

Winter Storm Warnings in Michigan, 2020 Every winter storm warning 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.