Alert archive / Michigan / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 29, NWS Grand Rapids, MI

May 16, 2025Lake County, Mason County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at May 16, 2025, 7:53 PM EDT for Lake County, Mason County, Michigan. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 16, 2025, 7:53 PM EDT (23:53 UTC)
Expired: May 16, 2025, 8:30 PM EDT
In force: 37 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Lake County, MI, Mason County, MI

The radar

The Grand Rapids radar (KGRR), 128 km from the middle of the area, began a volume at 23:52 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, 11.9 hours before the alert went out and 168 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: 1761 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 303 m²/s²
0-3 km storm-relative helicity: 325 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 severe thunderstorm 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 severe thunderstorm warning went out at May 16, 3:00 PM EDT, 4 hours 53 minutes earlier.

Area forecast discussion, May 16, 3:00 PM EDT, 4 hours 53 minutes before

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Hazardous weather outlook, May 16, 3:05 PM EDT, 4 hours 48 minutes before

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In the hours before

Local storm report, May 16, 4:45 PM EDT, 3 hours 8 minutes before

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Local storm report, May 16, 5:54 PM EDT, 1 hour 59 minutes before

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Local storm report, May 16, 5:56 PM EDT, 1 hour 57 minutes before

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Local storm report, May 16, 5:58 PM EDT, 1 hour 55 minutes before

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Local storm report, May 16, 7:04 PM EDT, 49 minutes before

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Special weather statement, May 16, 7:33 PM EDT, 20 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 8:21 PM EDT	Special Marine Warning	GRR		2 hr
May 15, 9:16 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Mason, Muskegon, Oceana, Ottawa	89 min
May 15, 9:33 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Allegan, Van Buren	87 min
May 15, 9:33 PM EDT	Tornado Warning	GRR	Muskegon, Newaygo, Ottawa	42 min
May 15, 9:52 PM EDT	Severe Thunderstorm Warning Destructive damage threat	GRR	Kent, Newaygo	83 min
May 15, 10:02 PM EDT	Tornado Warning	GRR	Allegan, Ottawa	43 min
May 15, 10:04 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Lake	46 min
May 15, 10:12 PM EDT	Tornado Warning	GRR	Kent, Montcalm, Newaygo	33 min
May 15, 10:20 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Mecosta	61 min
May 15, 10:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Montcalm	81 min
May 15, 10:33 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Ionia, Kalamazoo	71 min
May 15, 10:33 PM EDT	Tornado Warning	GRR	Allegan, Barry, Kent	42 min
May 15, 10:43 PM EDT	Tornado Warning	GRR	Allegan, Barry	47 min
May 15, 10:54 PM EDT	Severe Thunderstorm Warning	GRR	Osceola	38 min
May 15, 10:58 PM EDT	Tornado Warning	GRR	Barry, Eaton, Ionia	47 min
May 15, 11:01 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun	59 min
May 15, 11:02 PM EDT	Tornado Warning	GRR	Calhoun, Kalamazoo	43 min
May 15, 11:07 PM EDT	Severe Thunderstorm Warning	GRR	Eaton	53 min
May 15, 11:18 PM EDT	Tornado Warning	GRR	Eaton	27 min
May 15, 11:22 PM EDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	38 min
May 15, 11:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	GRR	Clinton	42 min
May 15, 11:26 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot	42 min
May 15, 11:32 PM EDT	Tornado Warning	GRR	Clinton, Gratiot	32 min
May 15, 11:33 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	67 min
May 15, 11:34 PM EDT	Tornado Warning	GRR	Ingham	41 min
May 16, 7:33 PM EDT	Special Weather Statement	GRR	Lake, Mason, Newaygo, Osceola	42 min
May 16, 7:35 PM EDT	Special Marine Warning	GRR		40 min
May 16, 7:42 PM EDT	Special Marine Warning	GRR		2 hr
May 16, 7:44 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Mecosta, Newaygo, Osceola	91 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2025 Every severe thunderstorm 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.