Alert archive / Michigan / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 113, NWS Detroit, MI

September 3, 2026Genesee County, Oakland County, Shiawassee County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Sep 3, 2026, 10:39 AM EDT for Genesee County, Oakland County, Shiawassee County, Michigan. It was in force for 66 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 3, 2026, 10:39 AM EDT (14:39 UTC)
Expired
Sep 3, 2026, 11:45 AM EDT
In force
66 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Genesee County, MI, Oakland County, MI, Shiawassee County, MI

The radar

The Detroit radar (KDTX), 31 km from the middle of the area, began a volume at 14:43 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.

What was reported inside it

TimeReportWhereRemark
Sep 3, 10:53 AM EDTTSTM WND DMGHolly, MILarge Tree down in Holly.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 14 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 2.7 hours before the alert went out and 32 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, Detroit, MI at 12:00Z on 2026-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1125 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, Detroit, MI at 12:00Z on 2026-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.1939587897Sfc1 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
1125 J/kg
Mixed-layer CIN
-108 J/kg
Mixed-layer LCL
1071 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

834 
WUUS53 KDTX 031439
SVRDTX
MIC049-125-155-031545-
/O.NEW.KDTX.SV.W.0113.260903T1439Z-260903T1545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
1039 AM EDT Thu Sep 3 2026

The National Weather Service in Detroit/Pontiac has issued a

* Severe Thunderstorm Warning for...
  Northwestern Oakland County in southeastern Michigan...
  Southeastern Shiawassee County in southeastern Michigan...
  Southern Genesee County in southeastern Michigan...

* Until 1145 AM EDT.

* At 1039 AM EDT, a severe thunderstorm was located over Gaines, or
  near Durand, moving east at 45 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Flint, Fenton, Burton, Swartz Creek, Linden, and Lake Fenton 
  around 1045 AM EDT.
  Grand Blanc and Holly around 1050 AM EDT.
  Goodrich around 1055 AM EDT.
  Ortonville around 1100 AM EDT.

Other locations impacted by this severe thunderstorm include Holly
State Recreation Area, Atlas, Argentine, Rankin, and Vernon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4298 8405 4306 8346 4275 8344 4276 8369
      4278 8369 4278 8402
TIME...MOT...LOC 1439Z 270DEG 39KT 4288 8391 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KDK
3 follow-up statements
703 
WWUS53 KDTX 031451
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1051 AM EDT Thu Sep 3 2026

MIC155-031500-
/O.CAN.KDTX.SV.W.0113.000000T0000Z-260903T1545Z/
Shiawassee MI-
1051 AM EDT Thu Sep 3 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SHIAWASSEE COUNTY
IS CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 4290 8391 4288 8345 4275 8344 4276 8369
      4278 8369 4278 8392 4284 8393
TIME...MOT...LOC 1450Z 299DEG 41KT 4281 8378 

$$

MIC049-125-031545-
/O.CON.KDTX.SV.W.0113.000000T0000Z-260903T1545Z/
Oakland MI-Genesee MI-
1051 AM EDT Thu Sep 3 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM EDT
FOR NORTHWESTERN OAKLAND AND SOUTHERN GENESEE COUNTIES...

At 1050 AM EDT, a severe thunderstorm was located over Linden, or
near Fenton, moving southeast at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

This severe storm will be near...
  Fenton, Holly, and Lake Fenton around 1055 AM EDT.

Other locations impacted by this severe thunderstorm include Holly
State Recreation Area and Argentine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4290 8391 4288 8345 4275 8344 4276 8369
      4278 8369 4278 8392 4284 8393
TIME...MOT...LOC 1450Z 299DEG 41KT 4281 8378 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

KDK
551 
WWUS53 KDTX 031502
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1102 AM EDT Thu Sep 3 2026

MIC049-031512-
/O.CAN.KDTX.SV.W.0113.000000T0000Z-260903T1545Z/
Genesee MI-
1102 AM EDT Thu Sep 3 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN GENESEE COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

&&

LAT...LON 4283 8363 4285 8345 4275 8344 4276 8369
      4278 8369
TIME...MOT...LOC 1502Z 282DEG 45KT 4278 8357 

$$

MIC125-031545-
/O.CON.KDTX.SV.W.0113.000000T0000Z-260903T1545Z/
Oakland MI-
1102 AM EDT Thu Sep 3 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM EDT
FOR NORTHWESTERN OAKLAND COUNTY...

At 1102 AM EDT, a severe thunderstorm was located near Holly, moving
east at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

This severe storm will be near...
  Ortonville around 1105 AM EDT.

Other locations impacted by this severe thunderstorm include Holly
State Recreation Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4283 8363 4285 8345 4275 8344 4276 8369
      4278 8369
TIME...MOT...LOC 1502Z 282DEG 45KT 4278 8357 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

KDK
847 
WWUS53 KDTX 031544
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1144 AM EDT Thu Sep 3 2026

MIC125-031554-
/O.EXP.KDTX.SV.W.0113.000000T0000Z-260903T1545Z/
Oakland MI-
1144 AM EDT Thu Sep 3 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OAKLAND COUNTY
WILL EXPIRE AT 1145 AM EDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

&&

LAT...LON 4283 8363 4285 8345 4275 8344 4276 8369
      4278 8369
TIME...MOT...LOC 1544Z 270DEG 39KT 4278 8296 

$$

KDK

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 Sep 3, 9:58 AM EDT, 41 minutes earlier. Its key messages:

  • Warm and humid again today with heat indices in the 90s, the warmest of which will be found closer to the MI/OH border and into the Metro region.
  • There is a Marginal to Slight Risk for severe weather today. Severe weather development will be possible at all times today, but most favorable timing will be this afternoon into late tonight.
  • Shower and thunderstorm chances continue into tomorrow.
Area forecast discussion, Sep 3, 9:58 AM EDT, 41 minutes before
Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
958 AM EDT Thu Sep 3 2026

.KEY MESSAGES...

- Warm and humid again today with heat indices in the 90s, the
warmest of which will be found closer to the MI/OH border and into
the Metro region.

- There is a Marginal to Slight Risk for severe weather today.
Severe weather development will be possible at all times today, but
most favorable timing will be this afternoon into late tonight.

- Shower and thunderstorm chances continue into tomorrow.

&&

.UPDATE...

A wealth of elevated instability resides over most of the region
this morning with the 12Z DTX raob depicting steep lapse rates of
7.6 C/km between 780 mb and 610 mb, fueling over 2500 J/kg of
MUCAPE. Observed EBWD of 33 kt with a straight hodograph is plenty
for organization of updrafts this morning - evidenced by the mature
convection in the Lansing vicinity. This activity will continue to
track ESE along an instability gradient and remnant outflow, though
longevity of current intensity carries some uncertainty. Current
trajectories carry storms between the I-69 and I-94 corridors through
12pm with potential for isolated instances of severe wind and hail
production, as well as locally torrential rainfall.

This activity will fortify the outflow boundary bisecting the area,
which may then serve as a focus for convection initiation later this
afternoon as a ridge-running shortwave tracks overhead. Perusal of
morning guidance doesn't capture this evolution very well but
continues to highlight increasing likelihood for upstream convection
west of Lake Michigan to grow upscale as it tracks through during
the peak in diurnal instability. The morning discussion outlines
this scenario well, and will note that the updated SPC Day 1 SWO
expanded the 15% severe wind contour northward to include areas
south of a line from Midland/Bay City to Marysville. The update also
introduced a CIG1 area south of I-69, indicating increasing
potential for significant severe winds in excess of 74 mph.

&&

.PREV DISCUSSION...
Issued at 713 AM EDT Thu Sep 3 2026

AVIATION...

Humid conditions remain this morning behind the frontal boundary
draped across Lower Michigan. This is allowing patchy dense fog to
develop. Greatest coverage is near MBS this morning and hanging just
north of FNT. A lull in showers and thunderstorms will transition to
renewed development of showers thunderstorms upstream that are
expected move into southeast Michigan by this afternoon. A period of
predominately VFR conditions should precede that arrival. A
secondary opportunity for showers and thunderstorms will possible
tonight as probability for lower MVFR ceilings also increases into
tomorrow morning.

D21/DTW Convection... Multiple opportunities for showers and
thunderstorms throughout today with favored timing this afternoon
into tonight.

DTW THRESHOLD PROBABILITIES...

* Low for ceiling 5000 ft or less early this morning and this
  afternoon. Moderate after 00Z tonight.

* Moderate for thunderstorms this afternoon into late tonight.

PREV DISCUSSION...
Issued at 345 AM EDT Thu Sep 3 2026

DISCUSSION...

For this morning... SPC mesoanalysis continues to showcase MUCAPE
values around 2000 J/kg along with 35-40 knots of effective bulk
shear with sufficient mid-level lapse rates around 5.5-6C/km. These
conditions have supported repeated rounds of thunderstorms, some
strong to severe, primarily along and and between M59 to I94.
Initiation has taken place along a quasi-stationary frontal zone
which has been reinforced from prior convective outflow. Additional
showers and storms remain possible through this morning as this
boundary provides a mechanism for ascent within this subtropical
airmass. Given the degree of elevated instability and bulk shear,
isolated strong to severe thunderstorms cannot be ruled out through
the morning.

Warm and humid conditions are again expected this afternoon
dewpoints again holding in the upper 60s to low 70s. Current
thinking is that temperatures will be slightly lower relative to
yesterday which decreases probabilities to reach heat advisory
thresholds. Additionally, given where the frontal boundary is, some
potential exists for showers and thunderstorms through the late
morning and into the afternoon which if materialized, could temper
temperatures locally. Although several hi-res solutions continue to
retain an early day period of clearing and stronger insolation.
Regardless, temperatures will be capable of pushing back into the
upper 80s to low 90s through the MI/OH border into the Metro region
with heat indices in the mid to upper 90s.

For this afternoon and evening, SE MI will be susceptible to renewed
thunderstorm activity. One possible scenario will stream from
activity upstream across Wisconsin or the western Great Lakes as a
strengthening LLJ pools moisture and enhances convergence along the
stalled frontal zone. Mean flow and forecasted storm motion would
carry this activity SE towards lower Michigan through the afternoon
and evening, placing all of SE MI within the corridor for potential
strong to severe thunderstorm development. Surface based instability
will increase with southward extend. SBCAPE around 1500-2000 J/kg is
possible near the MI/OH border and tapers towards 1000 J/kg north of
I-69. Deep layer shear around 30-35 knots remains solid for
organized convection with all storm modes possible.

Damaging wind gusts will remain the primary hazard when taking into
account strong low-level lapse rates, high PW, and strong buoyancy.
This will support efficient precipitation loading for wet
microbursts and/or consolidation of outflows with cold pool dynamics
that can support bowing segments. Isolate large hail also remains
possible given improving mid-level lapse rates approaching 6.5C/km.
A large portion of SE MI has been upgraded to a Slight Risk in the
latest SWODY 1, aligned where the better daytime instability is
projected to reside.

Additional rounds of showers and storms then becomes increasingly
likely late tonight into Friday morning as an elevated warm front
strengthens from SE WI into lower Michigan. This has been a pretty
robust signal in the latest 00Z runs. The boost in low to mid-level
theta a with convergence along this boundary will help support an
area of showers and storms overnight. While surface base instability
diminishes during this time, elevated instability and strong shear
holds which will maintain potential for organized convection. Storm
threat would transition to hail given the more elevated nature of
this activity along with localized heavy rainfall and flooding,
especially with any repeated convection along the boundary. Some
uncertainty resides how far east this activity will extend, but the
trends still take activity to or south of M59 overnight.

Friday will again offer additional chances for rain and thunderstorm
before ridge amplification across the Plains aids in reinforcing
high pressure over the Great Lakes, which will work to decrease rain
and thunderstorm chances this weekend.

MARINE...

Winds and waves remain below threshold criteria across the central
Great Lakes, aside from a few thunderstorms passing through a very
muggy air mass this afternoon and evening. Gradient winds will shift
from southwest to northwest once a weak cold front drops
southeastward through region. Convective chances decrease a bit
overnight within the wake of the slowing front, and winds could
briefly trend towards calm. A low confidence forecast persist
through the end of the week and early this weekend as a ridge over
central CONUS remains quasi-stationary. This offers several
additional opportunities for periods of showers and thunderstorms.
MWS and SMW headlines will continued to be used to address short-
term local watercraft concerns. No long-fused headline concerns
through the weekend, although areas of dense fog could become an
issue again late tonight into Thursday morning for portions of the
waterways.

HYDROLOGY...

There will be multiple chances for thunderstorm development through
the entirety of the day today, with the afternoon and evening hours
affording the best time frame for some better coverage. Given that
SE MI remains in a subtropical air mass, precipitation rates will be
very efficient with any thunderstorms. A quick 1-2" of rainfall will
be possible with any stronger thunderstorms which would lead to
localized flooding concerns. Overnight, there is a signal for
showers or thunderstorm development to then set up around or south
of M59, which will be capable of producing an additional 1-2+" of
rainfall pending where this rainfall axis sets up.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...None.
Lake Huron...None.
Lake St Clair...None.
Michigan waters of Lake Erie...None.
&&

UPDATE.......TF
AVIATION.....AA
DISCUSSION...AM
MARINE.......KGK
HYDROLOGY....AM

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.
Hazardous weather outlook, Sep 3, 3:54 AM EDT, 6 hours 45 minutes before
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
354 AM EDT Thu Sep 3 2026

MIZ047>049-053>055-060>063-068>070-075-076-082-083-040800-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-Shiawassee-Genesee-Lapeer-
St. Clair-Livingston-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
354 AM EDT Thu Sep 3 2026

This hazardous weather outlook is for southeast Michigan.

.DAY ONE...Today and Tonight

Hot and humid conditions this afternoon and evening with heat
indices peaking in the mid to upper 90s. These higher heat indices
will be most favorable closer to the MI/OH border and through the
Metro Detroit area.

There is a Marginal to Slight Risk for severe weather today. Main
severe weather hazards will be wind gusts to 70 mph and hail to 1.5
inches. Localized flooding will also be possible with repeated
thunderstorm activity. Discrete thunderstorms will be possible
initially with multicell clusters and linear bowing segment favored.
Storm motion will NW to SE around 35 mph.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A chance of strong thunderstorms continues Friday as well with
locally heavy rain possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-040800-
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-
354 AM EDT Thu Sep 3 2026

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

.DAY ONE...Today and Tonight

Heat indices in the mid to upper 90s are expected this afternoon.

There is a Marginal to Slight Risk for severe weather today. Main
severe weather hazards will be wind gusts in excess of 50 knots and
hail to 1.5 inches. Discrete thunderstorms will be possible
initially with multicell clusters and linear bowing segment favored.
Storm motion will NW to SE around mph.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A chance of strong thunderstorms continues Friday with locally heavy
rain possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

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

AM

In the hours before

Local storm report, Sep 3, 9:05 AM EDT, 1 hour 34 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
905 AM EDT Thu Sep 03 2026

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

0342 AM     Tstm Wnd Dmg     Harper Woods            42.43N  82.93W
09/03/2026                   Wayne              MI   Trained Spotter

            Multiple large tree branches down. Roof damage to a
            house caused by a large tree branch.

&&

Event Number DTX2600697

CB
Local storm report, Sep 3, 9:29 AM EDT, 1 hour 10 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
929 AM EDT Thu Sep 3 2026

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

0500 AM     Rain             2 NNW Saint Clair Shore 42.51N 82.90W
09/03/2026  M1.31 Inch       Macomb             MI   Cocorahs

            Cocorahs station MI-MB-33 Roseville 1.7 ENE.
            The period of the Rain event was 24 hours.

0615 AM     Rain             3 NW White Lake         42.69N 83.55W
09/03/2026  M1.21 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-77 White Lake 0.5 E.
            The period of the Rain event was 24 hours.

0635 AM     Rain             1 N Royal Oak           42.53N 83.15W
09/03/2026  M2.34 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-141 1 N Royal Oak.
            The period of the Rain event was 24 hours.

0645 AM     Rain             4 ENE Northeast Detroit 42.45N 82.96W
09/03/2026  M2.04 Inch       Macomb             MI   Cocorahs

            Cocorahs station MI-MB-73 Eastpointe 1.2
            SSW. The period of the Rain event was 24
            hours.

0700 AM     Rain             4 WSW Orchard Lake      42.57N 83.45W
09/03/2026  M2.17 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-149 Commerce Charter
            Twp 1.8 ESE. The period of the Rain event
            was 24 hours.

0700 AM     Rain             1 SSE Farmington        42.45N 83.36W
09/03/2026  M2.11 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-184 Farmington Hills
            2.7 SSE. The period of the Rain event was 24
            hours.

0700 AM     Rain             1 WSW Farmington        42.46N 83.40W
09/03/2026  M1.54 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-125 Farmington Hills
            2.4 SSW. The period of the Rain event was 24
            hours.

0700 AM     Rain             2 NE Birmingham         42.56N 83.20W
09/03/2026  M1.44 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-190 Troy 3.0 WSW. The
            period of the Rain event was 24 hours.

0700 AM     Rain             2 SW Grosse Pointe      42.36N 82.93W
09/03/2026  M1.41 Inch       Wayne              MI   Cocorahs

            Cocorahs station MI-WY-182 1 SW Grosse
            Pointe. The period of the Rain event was 24
            hours.

0700 AM     Rain             2 NE Livonia            42.42N 83.34W
09/03/2026  M1.33 Inch       Wayne              MI   Cocorahs

            Cocorahs station MI-WY-52 Livonia 2.0 NE.
            The period of the Rain event was 24 hours.

0700 AM     Rain             1 SSW Waterford         42.65N 83.40W
09/03/2026  M1.27 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-192 Waterford 1.2
            SSW. The period of the Rain event was 24
            hours.

0700 AM     Rain             3 SSW White Lake        42.61N 83.53W
09/03/2026  M1.25 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-144 Milford 4.0 ENE.
            The period of the Rain event was 24 hours.

0700 AM     Rain             4 N Chilson             42.58N 83.85W
09/03/2026  M1.04 Inch       Livingston         MI   Cocorahs

            Cocorahs station MI-LV-24 Howell 4.9 ESE.
            The period of the Rain event was 24 hours.

0715 AM     Rain             1 WNW Warren            42.50N 83.05W
09/03/2026  M1.82 Inch       Macomb             MI   Cocorahs

            Cocorahs station MI-MB-96 Warren 1.2 WNW.
            The period of the Rain event was 24 hours.

0730 AM     Rain             1 ENE Farmington        42.47N 83.37W
09/03/2026  M1.96 Inch       Oakland            MI   CO-OP Observer

            CO-OP Observer station FARM4 0.6 E
            Farmington. The period of the Rain event was
            24 hours.

0742 AM     Rain             5 NNW Novi              42.54N 83.52W
09/03/2026  M2.18 Inch       Oakland            MI   Cocorahs

            Cocorahs station MI-OK-53 Wixom 1.3 NE. The
            period of the Rain event was 24 hours.

0745 AM     Rain             2 S Farmington          42.43N 83.38W
09/03/2026  M1.93 Inch       Wayne              MI   Cocorahs

            Cocorahs station MI-WY-33 Livonia 2.3 NNW.
            The period of the Rain event was 24 hours.

&&
Special weather statement, Sep 3, 9:59 AM EDT, 40 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
959 AM EDT Thu Sep 3 2026

MIZ060-061-068-031500-
Shiawassee MI-Livingston MI-Genesee MI-
959 AM EDT Thu Sep 3 2026

...A STRONG THUNDERSTORM WILL IMPACT SHIAWASSEE...NORTHERN LIVINGSTON
AND SOUTHWESTERN GENESEE COUNTIES THROUGH 1100 AM EDT...

At 959 AM EDT, Doppler radar was tracking a strong thunderstorm near
Laingsburg, moving east at 35 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Flint, Owosso, Hartland, Fenton, Howell, Flushing, Durand,
Fowlerville, Perry, Laingsburg, Burton, Swartz Creek, Linden,
Corunna, Cohoctah, Morrice, Byron, Bancroft, Lennon, and Gaines.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4302 8437 4307 8369 4261 8368 4254 8414
      4277 8416 4277 8436 4278 8437
TIME...MOT...LOC 1359Z 260DEG 30KT 4280 8439

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

KDK
Special weather statement, Sep 3, 10:03 AM EDT, 36 minutes before
Special Weather Statement
National Weather Service Detroit/Pontiac MI
1003 AM EDT Thu Sep 3 2026

MIZ075-031500-
Washtenaw MI-
1003 AM EDT Thu Sep 3 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN WASHTENAW COUNTY
THROUGH 1100 AM EDT...

At 1003 AM EDT, Doppler radar was tracking a strong thunderstorm near
Chelsea, moving east at 45 mph.

HAZARD...Wind gusts up to 50 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.

Locations impacted include...
Ann Arbor, Ypsilanti, Chelsea, Dexter, Canton, Salem, Dixboro,
Whitmore Lake, Barton Hills, Hudson Mills Metropark, Delhi Mills,
Hudson Mills, and Lyndon Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4243 8356 4235 8354 4219 8355 4225 8413
      4242 8413
TIME...MOT...LOC 1403Z 275DEG 39KT 4235 8410

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

KDK
Local storm report, Sep 3, 10:10 AM EDT, 29 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
1010 AM EDT Thu Sep 03 2026

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

1103 PM     Tstm Wnd Dmg     Livonia                 42.40N  83.37W
09/02/2026                   Wayne              MI   Emergency Mngr

            Multiple trees down around the city of Livonia.

&&

Event Number DTX2600698

CB
Local storm report, Sep 3, 10:15 AM EDT, 24 minutes before
Preliminary Local Storm Report
National Weather Service Detroit/Pontiac MI
1015 AM EDT Thu Sep 03 2026

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

1106 PM     Tstm Wnd Dmg     Plymouth                42.37N  83.47W
09/02/2026                   Wayne              MI   Law Enforcement

            Numerous large tree branches downed with power outages
            around the city of Plymouth.

&&

Event Number DTX2600699

CB

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 2, 8:20 PM EDTSpecial Weather StatementDTXSaint Clair25 min
Sep 2, 10:26 PM EDTSevere Thunderstorm WarningDTXLivingston, Oakland79 min
Sep 2, 10:32 PM EDTSpecial Marine WarningDTX88 min
Sep 2, 10:47 PM EDTSevere Thunderstorm Warning Considerable damage threatDTXWashtenaw, Wayne73 min
Sep 2, 10:50 PM EDTSevere Thunderstorm WarningDTXMacomb55 min
Sep 2, 11:15 PM EDTSpecial Marine WarningDTX51 min
Sep 2, 11:27 PM EDTAreal Flood WarningDTXMacomb, Oakland, Wayne6 hr
Sep 3, 12:00 AM EDTSevere Thunderstorm WarningDTXWayne49 min
Sep 3, 2:12 AM EDTSpecial Weather StatementDTXMacomb63 min
Sep 3, 2:18 AM EDTSpecial Weather StatementDTXLivingston57 min
Sep 3, 2:30 AM EDTSevere Thunderstorm WarningDTXMacomb, Wayne35 min
Sep 3, 2:31 AM EDTSpecial Marine WarningDTX34 min
Sep 3, 3:05 AM EDTSpecial Weather StatementDTXWayne55 min
Sep 3, 3:40 AM EDTSpecial Marine WarningDTX20 min
Sep 3, 9:59 AM EDTSpecial Weather StatementDTXGenesee, Livingston, Shiawassee61 min
Sep 3, 10:03 AM EDTSpecial Weather StatementDTXWashtenaw57 min
Sep 3, 10:50 AM EDTSevere Thunderstorm Warning Considerable damage threatDTXLivingston, Oakland, Wayne55 min
Sep 3, 11:07 AM EDTSevere Thunderstorm Warning Considerable damage threatDTXOakland41 min
Sep 3, 11:18 AM EDTSpecial Marine WarningDTX87 min
Sep 3, 11:23 AM EDTSevere Thunderstorm Warning Considerable damage threatDTXMacomb, Saint Clair67 min
Sep 3, 11:56 AM EDTSevere Thunderstorm WarningDTXOakland34 min
Sep 3, 1:34 PM EDTSevere Thunderstorm WarningDTXMidland, Saginaw71 min
Sep 3, 1:48 PM EDTTornado WarningDTXMidland, Saginaw42 min
Sep 3, 1:51 PM EDTSpecial Weather StatementDTXGenesee39 min
Sep 3, 1:58 PM EDTSevere Thunderstorm WarningDTXGenesee62 min
Sep 3, 2:11 PM EDTSevere Thunderstorm WarningDTXShiawassee64 min
Sep 3, 2:16 PM EDTSevere Thunderstorm WarningDTXLapeer59 min
Sep 3, 2:26 PM EDTSpecial Marine WarningDTX2 hr
Sep 3, 2:29 PM EDTSevere Thunderstorm WarningDTXSaginaw, Tuscola32 min
Sep 3, 2:44 PM EDTSevere Thunderstorm WarningDTXGenesee, Livingston, Oakland48 min
Sep 3, 2:48 PM EDTSevere Thunderstorm WarningDTXSaint Clair, Sanilac57 min
Sep 3, 3:05 PM EDTTornado WarningDTXLivingston40 min
Sep 3, 3:21 PM EDTSevere Thunderstorm WarningDTXOakland54 min
Sep 3, 3:26 PM EDTSevere Thunderstorm WarningDTXWashtenaw47 min
Sep 3, 3:32 PM EDTTornado WarningDTXWashtenaw33 min
Sep 3, 3:36 PM EDTTornado WarningDTXOakland39 min
Sep 3, 3:43 PM EDTSpecial Marine WarningDTX82 min
Sep 3, 3:44 PM EDTSevere Thunderstorm WarningDTXWayne49 min
Sep 3, 3:48 PM EDTTornado WarningDTXWayne42 min
Sep 3, 3:50 PM EDTSevere Thunderstorm WarningDTXMonroe43 min
Sep 3, 3:53 PM EDTTornado WarningDTXLenawee33 min
Sep 3, 4:00 PM EDTTornado WarningDTXMacomb31 min
Sep 3, 4:12 PM EDTTornado WarningDTXMonroe26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.