Alert archive / Michigan / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 7, NWS Detroit, MI

April 4, 2026Lenawee County, Monroe County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Apr 4, 2026, 3:13 PM EDT for Lenawee County, Monroe County, Michigan. It was in force for 48 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 4, 2026, 3:13 PM EDT (19:13 UTC)
Expired: Apr 4, 2026, 4:01 PM EDT
In force: 48 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Lenawee County, MI, Monroe County, MI

The radar

The Detroit radar (KDTX), 92 km from the middle of the area, began a volume at 19:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 4, 2:48 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.2 hours before the alert went out and 276 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: 29 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1279 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 176 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 Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 4, 1:46 PM EDT, 1 hour 27 minutes earlier.

Area forecast discussion, Apr 4, 1:46 PM EDT, 1 hour 27 minutes before

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Hazardous weather outlook, Apr 4, 3:59 AM EDT, 11 hours 14 minutes before

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In the hours before

Special weather statement, Apr 4, 10:32 AM EDT, 4 hours 41 minutes before

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Local storm report, Apr 4, 11:41 AM EDT, 3 hours 32 minutes before

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Local storm report, Apr 4, 12:38 PM EDT, 2 hours 35 minutes before

Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
1238 PM EDT Sat Apr 04 2026

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

0600 AM     Rain             1 ENE Lake Orion        42.78N  83.24W
04/04/2026  M1.36 inch       Oakland            MI   CoCoRaHS

            24 hour total rainfall.

0700 AM     Rain             4 WSW Howell            42.61N  83.94W
04/04/2026  M1.15 inch       Livingston         MI   CoCoRaHS

            24 hour total rainfall.

0700 AM     Rain             Fowlerville             42.66N  84.07W
04/04/2026  M1.12 inch       Livingston         MI   CoCoRaHS

            24 hour total rainfall.

0700 AM     Rain             7 SW Linden             42.75N  83.87W
04/04/2026  M1.54 inch       Livingston         MI   CoCoRaHS

            24 hour total rainfall.

0700 AM     Rain             3 N Waterford           42.70N  83.39W
04/04/2026  M1.46 inch       Oakland            MI   CoCoRaHS

            24 hour total rainfall.

0700 AM     Rain             7 NE Holly              42.87N  83.53W
04/04/2026  M1.33 inch       Oakland            MI   CoCoRaHS

            24 hour total rainfall.

0700 AM     Rain             1 NE Clarkston          42.75N  83.40W
04/04/2026  M1.29 inch       Oakland            MI   CoCoRaHS

            24 hour total rainfall.

0800 AM     Rain             1 NE Highland           42.65N  83.60W
04/04/2026  M1.25 inch       Oakland            MI   CoCoRaHS

            24 hour total rainfall.

0800 AM     Rain             6 WSW Fenton            42.80N  83.71W
04/04/2026  M1.82 inch       Genesee            MI   CoCoRaHS

            24 hour total rainfall.

0835 AM     Rain             3 W Metamora            42.94N  83.35W
04/04/2026  M1.67 inch       Lapeer             MI   CoCoRaHS

            24 hour total rainfall.

0930 AM     Rain             2 WSW Flint             43.02N  83.69W
04/04/2026  M1.10 inch       Genesee            MI   CoCoRaHS

            24 hour total rainfall.

1140 AM     Rain             NW Marysville           42.91N  82.48W
04/04/2026  M1.92 inch       St. Clair          MI   Trained Spotter

            24 hour total rainfall.

1153 AM     Rain             3 E Lakeville           42.81N  83.10W
04/04/2026  M2.65 inch       Macomb             MI   CoCoRaHS

            24 hour total rainfall near Dequindre and 33 mile.
            Nearby creek exceeding bankfull.

1203 PM     Rain             Riley Center            42.94N  82.84W
04/04/2026  M2.98 inch       St. Clair          MI   Trained Spotter

            24 hour total rainfall.

&&

Event Number DTX2600345
Event Number DTX2600346
Event Number DTX2600347
Event Number DTX2600348
Event Number DTX2600349
Event Number DTX2600350
Event Number DTX2600351
Event Number DTX2600352
Event Number DTX2600353
Event Number DTX2600354
Event Number DTX2600355
Event Number DTX2600356
Event Number DTX2600357
Event Number DTX2600358

KGK

Special weather statement, Apr 4, 3:06 PM EDT, 7 minutes before

Special Weather Statement
National Weather Service Detroit/Pontiac MI
306 PM EDT Sat Apr 4 2026

MIZ075-076-082-083-042000-
Lenawee MI-Monroe MI-Washtenaw MI-Wayne MI-
306 PM EDT Sat Apr 4 2026

...STRONG THUNDERSTORMS WILL IMPACT MONROE...SOUTHWESTERN WAYNE...
EASTERN LENAWEE AND SOUTHEASTERN WASHTENAW COUNTIES THROUGH 400 PM
EDT...

At 304 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Saline to near Britton to near Ottawa
Lake. Movement was northeast at 55 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Taylor, Romulus, Monroe, Flat Rock, Saline, Milan, Dundee,
Blissfield, Carleton, Temperance, Wyandotte, Trenton, Grosse Ile,
Ida, Belleville, Luna Pier, Petersburg, Deerfield, Britton, and
Maybee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southeastern Michigan.

&&

LAT...LON 4217 8388 4226 8312 4196 8318 4190 8324
      4190 8330 4182 8337 4172 8341 4172 8346
      4173 8346 4172 8394
TIME...MOT...LOC 1904Z 213DEG 49KT 4215 8375 4197 8377 4173 8382

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

AA

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 8:31 PM EDT	Small Craft Advisory	DTX		48 hr
Apr 3, 10:12 PM EDT	River Flood Warning	DTX	Midland, Saginaw	3 days
Apr 3, 10:12 PM EDT	River Flood Warning	DTX	Bay, Saginaw	7 days
Apr 3, 10:12 PM EDT	River Flood Warning	DTX	Saginaw	4 days
Apr 4, 7:59 AM EDT	Areal Flood Advisory	DTX	Macomb, Saint Clair	3 hr
Apr 4, 9:57 AM EDT	Gale Watch	DTX		11 hr
Apr 4, 11:13 AM EDT	Areal Flood Advisory	DTX	Saginaw	3 hr
Apr 4, 12:31 PM EDT	River Flood Warning	DTX	Saginaw, Shiawassee	6 days
Apr 4, 1:29 PM EDT	River Flood Warning	DTX	Genesee	27 hr
Apr 4, 1:30 PM EDT	Flood Watch	DTX	Bay, Genesee, Lapeer, Livingston, Macomb, Midland and 8 more	11 hr
Apr 4, 1:53 PM EDT	River Flood Warning	DTX	Genesee, Saginaw	36 hr
Apr 4, 1:55 PM EDT	River Flood Warning	DTX	Genesee	4 days
Apr 4, 3:06 PM EDT	Special Weather Statement	DTX	Monroe	54 min
Apr 4, 3:15 PM EDT	Special Marine Warning	DTX		45 min
Apr 4, 4:08 PM EDT	Special Weather Statement	DTX	Wayne	37 min
Apr 4, 5:15 PM EDT	Special Weather Statement	DTX	Lenawee, Monroe, Washtenaw, Wayne	60 min
Apr 4, 5:49 PM EDT	Tornado Warning	DTX	Wayne	26 min
Apr 4, 6:03 PM EDT	Tornado Warning	DTX	Monroe	27 min
Apr 4, 6:04 PM EDT	Tornado Warning	DTX	Macomb, Oakland	33 min
Apr 4, 6:08 PM EDT	Special Marine Warning	DTX		37 min

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.