Alert archive / Michigan / Winter Storm Warnings in 2025

Winter Storm Warning 1, NWS Grand Rapids, MI

January 21, 20256 counties in Michigan

NWS Grand Rapids, MI issued this winter storm warning at Jan 21, 2025, 3:38 PM EST for 6 counties in Michigan. It was in force for 36 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
Jan 21, 2025, 3:38 PM EST (20:38 UTC)
Expired
Jan 23, 2025, 3:11 AM EST
In force
36 hr
Issued by
NWS Grand Rapids, MI

Counties Lake County, MI, Mason County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ottawa County, MI

The radar

The Grand Rapids radar (KGRR), 88 km from the middle of the area, began a volume at 20:40 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, 8.6 hours before the alert went out and 188 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2025-01-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2025-01-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1072 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
87 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 Grand Rapids, MI wrote its last area forecast discussion before this winter storm warning went out at Jan 21, 3:22 PM EST, 16 minutes earlier.

Area forecast discussion, Jan 21, 3:22 PM EST, 16 minutes before
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Hazardous weather outlook, Jan 21, 3:09 AM EST, 12 hours 29 minutes before
Hazardous Weather Outlook
National Weather Service Grand Rapids MI
309 AM EST Tue Jan 21 2025

MIZ037>040-043>046-050>052-056>059-064>067-071>074-220815-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
309 AM EST Tue Jan 21 2025

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

Lake effect snow showers will continue through the day into
tonight. Travel impacts and occasional reduced visibilities will
persist, especially near and west of US131. Wind chills of -10 to
-25F today and tonight will lead to frostbite for exposed skin in
 as little as 30 minutes.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Potential for travel impacts is increasing for lakeshore near and
north of Holland and the US131 corridor north of Grand Rapids
Wednesday into early Thursday. Snow and blowing snow will make
travel difficult and reduce visibilities at times.

Wind chills of -10 to -25F are likely through late morning
Wednesday. Frostbite times for exposed skil will be as little as
30 minutes.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

LMZ844>849-220815-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
309 AM EST Tue Jan 21 2025

This hazardous weather outlook is for the nearshore waters from
St Joseph to Manistee.

.DAY ONE...Today and Tonight

Winds and waves hazardous to small craft will continue through
today along with heavy freezing spray.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Winds and waves hazardous to small craft will continue through
Thursday with a low chance of brief gales Wednesday. Heavy
freezing spray will continue into Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

Thomas

In the hours before

Local storm report, Jan 21, 10:08 AM EST, 5 hours 30 minutes before
Preliminary Local Storm Report
National Weather Service Grand Rapids MI
1008 AM EST Tue Jan 21 2025

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

1007 AM     Snow             2 SE Allendale          42.97N 85.92W
01/21/2025  M8.5 Inch        Ottawa             MI   Public

            Storm total since the snow began Sunday.

&&
Local storm report, Jan 21, 2:24 PM EST, 1 hour 14 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 11:27 AM ESTGale WarningGRR29 hr

Nearby

Winter Storm Warnings in Michigan, 2025Every winter storm warning in 2025

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.