Alert archive / Michigan / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 35, NWS Grand Rapids, MI

April 13, 2026Gratiot County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 13, 2026, 9:09 PM EDT for Gratiot County, Michigan. It was in force for 36 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: Apr 13, 2026, 9:09 PM EDT (01:09 UTC)
Expired: Apr 13, 2026, 9:45 PM EDT
In force: 36 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Gratiot County, MI

The radar

The Grand Rapids radar (KGRR), 88 km from the middle of the area, began a volume at 01:12 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

Detroit, MI (KDTX), launched 00:00Z, 1.2 hours before the alert went out and 115 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: 854 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1416 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.9

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.

In the hours before

Local storm report, Apr 13, 8:48 PM EDT, 21 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
Apr 13, 8:02 PM EDT	Severe Thunderstorm Warning	GRR	Eaton, Ionia, Kent	47 min
Apr 13, 8:29 PM EDT	Severe Thunderstorm Warning	GRR	Clinton, Ionia	61 min
Apr 13, 8:39 PM EDT	Severe Thunderstorm Warning	GRR	Ionia	36 min
Apr 13, 10:59 PM EDT	Special Marine Warning	GRR		38 min
Apr 13, 11:21 PM EDT	Severe Thunderstorm Warning	GRR	Mason	39 min
Apr 13, 11:45 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Mason, Newaygo, Oceana	45 min
Apr 14, 12:22 AM EDT	Severe Thunderstorm Warning	GRR	Clare, Osceola	53 min
Apr 14, 12:47 AM EDT	Special Marine Warning	GRR		58 min
Apr 14, 1:34 AM EDT	Special Weather Statement	GRR	Clinton	41 min
Apr 14, 1:46 AM EDT	Areal Flood Advisory	GRR	Lake, Mason, Osceola	6 hr
Apr 14, 2:08 AM EDT	Areal Flood Warning	GRR	Mason	5 hr
Apr 14, 2:29 AM EDT	Areal Flood Warning	GRR	Lake, Osceola	5 hr
Apr 14, 2:49 AM EDT	Special Marine Warning	GRR		2 hr
Apr 14, 2:55 AM EDT	Areal Flood Advisory	GRR	Clare	5 hr
Apr 14, 3:43 AM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Oceana, Ottawa	45 min
Apr 14, 4:07 AM EDT	Special Weather Statement	GRR	Allegan, Van Buren	68 min
Apr 14, 4:30 AM EDT	Special Weather Statement	GRR	Kent	45 min
Apr 14, 4:47 AM EDT	Special Weather Statement	GRR	Gratiot, Isabella, Mecosta, Montcalm	43 min
Apr 14, 4:52 AM EDT	Special Weather Statement	GRR	Barry, Ionia, Kalamazoo, Van Buren	38 min
Apr 14, 5:08 AM EDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	21 min
Apr 14, 5:13 AM EDT	Special Weather Statement	GRR	Calhoun, Clinton, Eaton, Ingham, Jackson	92 min
Apr 14, 5:39 AM EDT	Special Weather Statement	GRR	Barry, Gratiot, Kalamazoo	36 min
Apr 14, 11:27 AM EDT	River Flood Warning	GRR	Ingham	5 days

Nearby

Severe Thunderstorm Warnings in Michigan, 2026 Every severe thunderstorm warning in 2026

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.