Alert archive / Michigan / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 76, NWS Detroit, MI

June 25, 2026Saint Clair County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jun 25, 2026, 3:15 PM EDT for Saint Clair County, Michigan. It was in force for 30 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
Jun 25, 2026, 3:15 PM EDT (19:15 UTC)
Expired
Jun 25, 2026, 3:45 PM EDT
In force
30 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Saint Clair County, MI

The radar

The Detroit radar (KDTX), 71 km from the middle of the area, began a volume at 19:19 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

Alpena, MI (KAPX), launched 12:00Z, 7.3 hours before the alert went out and 239 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, Alpena, MI at 12:00Z on 2026-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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, Alpena, MI at 12:00Z on 2026-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
924 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
91 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 Jun 25, 3:13 PM EDT, 2 minutes earlier.

Area forecast discussion, Jun 25, 3:13 PM EDT, 2 minutes before
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Hazardous weather outlook, Jun 25, 4:15 AM EDT, 11 hours before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
415 AM EDT Thu Jun 25 2026

MIZ047>049-053>055-060>063-068>070-075-076-082-083-260815-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
415 AM EDT Thu Jun 25 2026

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

Morning showers with isolated thunderstorms dissipate.

Thunderstorm chances rises again this afternoon, more so for the
Tri-Cities, The Thumb, and southward toward Metro Detroit. Overall
coverage with this marginal event will be isolated to scattered, but
some organized storms still pose a low-end isolated severe wind
threat. Latest SPC Convective Outlook did include a small Marginal
Risk area tied to the potential for a few discrete stronger cells,
but the bulk of Southeast Michigan that sees storms later today
should be sub-severe.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Very hot and humid conditions are likely through the first half of
the next week as heat indices could exceed 100F. Additional
thunderstorm chances exist during the middle of next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected today or tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-260815-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
415 AM EDT Thu Jun 25 2026

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Today and Tonight

Morning showers with isolated thunderstorms dissipate.

Thunderstorm chances rises again this afternoon, more so for the
Tri-Cities, The Thumb, and southward toward Metro Detroit. Overall
coverage with this marginal event will be isolated to scattered, but
some organized storms still pose a low-end isolated severe wind
threat. Latest SPC Convective Outlook did include a small Marginal
Risk area tied to the potential for a few discrete stronger cells,
but the bulk of Southeast Michigan that sees storms later today
should be sub-severe.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Additional thunderstorm chances exist during the middle of next
week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected today or tonight.

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

KGK

In the hours before

Special weather statement, Jun 25, 2:35 PM EDT, 40 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
235 PM EDT Thu Jun 25 2026

MIZ063-251900-
St. Clair MI-
235 PM EDT Thu Jun 25 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ST. CLAIR COUNTY
THROUGH 300 PM EDT...

At 235 PM EDT, Doppler radar was tracking a strong thunderstorm near
Emmett, or 7 miles southeast of Yale, moving northeast at 35 mph.

HAZARD...Winds in excess of 30 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Lakeport around 245 PM EDT.

Other locations impacted by this storm include Fort Gratiot, North
Street, Avoca, Blaine, Fargo, Goodells, Ruby, Wadhams, and Brockway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4301 8240 4300 8242 4299 8242 4295 8274
      4306 8280 4317 8253 4317 8250 4318 8251
      4318 8250
TIME...MOT...LOC 1835Z 244DEG 32KT 4305 8269

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

Mann
Special weather statement, Jun 25, 2:47 PM EDT, 28 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
247 PM EDT Thu Jun 25 2026

MIZ048-251915-
Bay MI-
247 PM EDT Thu Jun 25 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN BAY COUNTY THROUGH
315 PM EDT...

At 247 PM EDT, Doppler radar was tracking a strong thunderstorm over
Pinconning, moving east at 15 mph.

HAZARD...Winds in excess of 30 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Pinconning around 250 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4373 8391 4380 8411 4391 8408 4391 8387
TIME...MOT...LOC 1847Z 287DEG 11KT 4384 8401

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

Mann

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 2:35 PM EDTSpecial Weather StatementDTXSaint Clair25 min
Jun 25, 2:47 PM EDTSpecial Weather StatementDTXBay28 min
Jun 25, 2:59 PM EDTSevere Thunderstorm WarningDTXBay31 min
Jun 25, 3:00 PM EDTSpecial Marine WarningDTX46 min
Jun 25, 3:16 PM EDTSpecial Marine WarningDTX33 min
Jun 25, 3:20 PM EDTSpecial Weather StatementDTXOakland40 min
Jun 25, 3:35 PM EDTSpecial Weather StatementDTXMidland55 min
Jun 25, 3:51 PM EDTSpecial Weather StatementDTXLenawee39 min
Jun 25, 3:53 PM EDTSpecial Weather StatementDTXGenesee52 min
Jun 25, 4:14 PM EDTSpecial Weather StatementDTXBay46 min
Jun 25, 4:24 PM EDTSevere Thunderstorm WarningDTXBay, Midland, Saginaw52 min
Jun 25, 4:34 PM EDTSpecial Weather StatementDTXLapeer56 min
Jun 25, 4:51 PM EDTSevere Thunderstorm WarningDTXLapeer39 min
Jun 25, 5:14 PM EDTSpecial Weather StatementDTXSaint Clair61 min
Jun 25, 5:15 PM EDTSpecial Weather StatementDTXTuscola60 min
Jun 25, 5:23 PM EDTSevere Thunderstorm WarningDTXSaint Clair29 min
Jun 25, 5:45 PM EDTSpecial Weather StatementDTXSaginaw45 min
Jun 25, 5:50 PM EDTSpecial Weather StatementDTXMacomb25 min
Jun 25, 5:56 PM EDTSpecial Marine WarningDTX49 min
Jun 25, 6:03 PM EDTSpecial Weather StatementDTXSaint Clair57 min
Jun 25, 6:11 PM EDTSpecial Weather StatementDTXSanilac64 min
Jun 25, 6:13 PM EDTSevere Thunderstorm WarningDTXMacomb, Saint Clair17 min
Jun 25, 7:54 PM EDTSpecial Weather StatementDTXSanilac66 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2026Every 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.