Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 270, NWS Milwaukee, WI

September 4, 2026Fond du Lac County, Sheboygan County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 4, 2026, 1:11 AM CDT for Fond du Lac County, Sheboygan County, Wisconsin. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 4, 2026, 1:11 AM CDT (06:11 UTC)
Expired
Sep 4, 2026, 2:00 AM CDT
In force
49 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Fond du Lac County, WI, Sheboygan County, WI

The radar

The Milwaukee radar (KMKX), 78 km from the middle of the area, began a volume at 06:15 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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

Davenport, (KDVN), launched 00:00Z, 6.2 hours before the alert went out and 288 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, Davenport, at 00:00Z on 2026-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3157 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, Davenport, at 00:00Z on 2026-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
3157 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1516 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.4
Supercell composite
5.5

Open this sounding in Storm Lab

The text

As transmitted.

494 
WUUS53 KMKX 040611
SVRMKX
WIC039-117-040700-
/O.NEW.KMKX.SV.W.0270.260904T0611Z-260904T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
111 AM CDT Fri Sep 4 2026

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Southeastern Fond du Lac County in east central Wisconsin...
  Southwestern Sheboygan County in east central Wisconsin...

* Until 200 AM CDT.

* At 111 AM CDT, a severe thunderstorm was located 7 miles east of
  Fond Du Lac, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Campbellsport, Eden, Dundee, Waucousta, Beechwood, and New Fane.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4364 8843 4375 8837 4363 8807 4354 8816
TIME...MOT...LOC 0611Z 300DEG 18KT 4374 8831 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KUROSKI
2 follow-up statements
946 
WWUS53 KMKX 040619
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
119 AM CDT Fri Sep 4 2026

WIC039-117-040700-
/O.CON.KMKX.SV.W.0270.000000T0000Z-260904T0700Z/
Fond du Lac WI-Sheboygan WI-
119 AM CDT Fri Sep 4 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR SOUTHEASTERN FOND DU LAC AND SOUTHWESTERN SHEBOYGAN COUNTIES...

At 119 AM CDT, a severe thunderstorm was located 8 miles north of
Campbellsport, or 9 miles southeast of Fond Du Lac, moving southeast
at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Campbellsport, Dundee, Waucousta, Beechwood, and New Fane.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4363 8838 4372 8830 4363 8807 4354 8816
TIME...MOT...LOC 0619Z 300DEG 18KT 4372 8826 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KUROSKI
447 
WWUS53 KMKX 040638
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
138 AM CDT Fri Sep 4 2026

WIC039-040648-
/O.CAN.KMKX.SV.W.0270.000000T0000Z-260904T0700Z/
Fond du Lac WI-
138 AM CDT Fri Sep 4 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FOND DU LAC
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 4367 8816 4363 8807 4354 8816
TIME...MOT...LOC 0638Z 300DEG 18KT 4367 8815 

$$

WIC117-040700-
/O.CON.KMKX.SV.W.0270.000000T0000Z-260904T0700Z/
Sheboygan WI-
138 AM CDT Fri Sep 4 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR SOUTHWESTERN SHEBOYGAN COUNTY...

At 138 AM CDT, a severe thunderstorm was located 8 miles northeast of
Campbellsport, or 10 miles southwest of Plymouth, moving southeast at
20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Beechwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4367 8816 4363 8807 4354 8816
TIME...MOT...LOC 0638Z 300DEG 18KT 4367 8815 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KUROSKI

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 Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 4, 12:23 AM CDT, 48 minutes earlier. Its key messages:

  • Periods of showers and storms will be possible through Friday. Some isolated severe storms are possible overnight capable of gusty winds and hail. Another round of strong to severe storms is then possible around daybreak, capable of damaging winds and heavy rainfall.
  • Drier weather expected for the weekend into early next week, with warm and humid conditions persisting.
Area forecast discussion, Sep 4, 12:23 AM CDT, 48 minutes before
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
1223 AM CDT Fri Sep 4 2026

.KEY MESSAGES...

- Periods of showers and storms will be possible through Friday.
  Some isolated severe storms are possible overnight capable of
  gusty winds and hail. Another round of strong to severe storms
  is then possible around daybreak, capable of damaging winds
  and heavy rainfall.

- Drier weather expected for the weekend into early next week,
  with warm and humid conditions persisting.

&&

.SHORT TERM...
Issued 1104 PM CDT Thu Sep 3 2026

Current Overnight through Friday Night:

An isolated supercell thunderstorm has formed out of some
remnant convection on the eastern edge of the 850mb WAA and
capping at the 700mb level. It is generally following a MUCAPE
gradient to the SE as it tracks into east-central and southeast
WI. Given ample effective shear of 40 to 50 knots and CAPE
ahead of the storm, it is expected to maintain it's strength as
it tracks toward the MKE Metro and out over Lake Michigan into
very early Friday morning.

This evening's convection has begun to evolve more like the 00Z
Thursday run of the HRRR rather than its most recent runs this
evening, as the potential for a lead supercell was well captured
by that run. Given more details of that model run starting to
pan out for us in current radar obs, such as convection now
increasing in coverage over north central WI, the rest of the
early morning hours on Friday evolve into a training line of
convection angled from north central WI into SE WI. A heavy rain
threat may then evolve as convection moves through the area.

There's still a bit of uncertain regarding convection over
north central MN and how that will track into the area around
daybreak Friday. If it holds together and tracks along the CAPE
gradient into our area, damaging winds would certainly be a
threat. However, the current convection over north central WI
and our area may sap vital CAPE to sustain the MCS into our area
as the night goes on. For now, the assumption is that the MCS
will make it into our area, with a storms arriving in the 5am to
8am timeframe for the northeastern half of our CWA.

Following the morning storms, it does not appear that the
atmosphere will recover enough to sustain widespread storms
until Friday evening when the stationary front begins to sag
southward near the WI/IL border. Storms Friday evening should be
isolated to widely scattered.

CMiller

&&

.LONG TERM...
Issued 1221 AM CDT Thu Sep 3 2026

Saturday through Thursday:

The frontal boundary will continue southward on Saturday, moving
fairly slowly as it goes. Even though light winds will come
around to northerly Saturday, humidity will remain, and highs
will be in the low to mid 80s. Surface pressure is expected to
increase through the day, and with the front retreating south,
rain chances are not expected. High pressure will then linger
Sunday through Monday keeping us dry. Dew points will remain
somewhat elevated through the weekend as we will fail to get a
push of appreciable dry air into southern WI, though highs will
dip into upper 70s to low 80s. Warm advection then returns
Tuesday with increased chances for more thunderstorms with the
NBM painting 25 to 50% PoPs over the area. Shower and storm
chances then continue through the rest of the extended. CMiller

&&

.AVIATION...
Issued 1203 AM CDT Thu Sep 3 2026

Some lakeshore terminals may see some marine fog through the
early morning hours, provided rain doesn't move overhead.
Thunderstorms are ongoing over east central WI with their
number/coverage becoming more widespread toward daybreak Friday
morning. Ceilings with convection are expected to be between
1500 to 3000 feet. Areas over southwest Wisconsin may miss out
on the lions share of the thunderstorms activity and stay in
VFR. Storms should then largely end during the post dawn hours
Friday morning, before more isolated to scattered redevelopment
occurs Friday evening/night. Winds will remain southerly to
southeasterly early Friday morning, becoming more southwesterly
to westerly Friday afternoon.

CMiller

&&

.MARINE...
Issued 1156 PM CDT Thu Sep 3 2026

Some Marine Dense Fog may form tonight, mainly over the middle
third of the lake, close to a stalled frontal boundary.

Otherwise, the frontal boundary will remain across the Great
Lakes region through Friday. As this frontal boundary waffles
north to south across the lake from day to day, generally east to
northeast winds are expected north of the front, with east to
southeast winds south of the front. On and off thunderstorms will
be possible along and north of this frontal boundary through at
least Friday night. Then high pressure around 30.1 inches builds
over Hudson Bay on Saturday, while low pressure around 29.6 inches
moves into the northern Great Plains. Similar to earlier week
storms, widespread severe weather is not anticipated, though
isolated stronger storms with hail and gusty winds are possible.

CMiller

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...None.
&&

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Hazardous weather outlook, Sep 4, 12:29 AM CDT, 42 minutes before
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
1229 AM CDT Fri Sep 4 2026

WIZ046-047-051-052-056>060-062>072-050530-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
1229 AM CDT Fri Sep 4 2026

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...Tonight

Chances for thunderstorms continue through daybreak. There the
potential for strong to severe storms capable of producing
damaging winds and hail.

Locally heavy rainfall with ponding and minor flooding is also
possible with any thunderstorms that move over the same area,
particularly overnight and around daybreak

.DAYS TWO THROUGH SEVEN...Friday through Thursday

A line of storms Friday morning may produce continued minor
flooding across southern Wisconsin as well as more chances for
gusty winds. Some of the line may be strong to severe.

Afternoon heat indices in the 90s possible in far southern
Wisconsin and near 100 along the Wisconsin and Illinois border
Friday.

Isolated to scattered storms Friday evening, continuing through
the overnight hours. A few may be strong.

Next storm chances develop Tuesday, with increasing heat and
humidity into Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

LMZ643>646-050530-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
1229 AM CDT Fri Sep 4 2026

This Hazardous Weather Outlook is for the nearshore waters from
Sheboygan Wisconsin to Winthrop Harbor Illinois.

.DAY ONE...Tonight

Chance for thunderstorms, especially late tonight. There is a
potential for strong to severe storms capable of producing
damaging winds. Hail and an isolated waterspout are possible as
well.

Some marine fog may also develop overnight.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Isolated to scattered storms Friday afternoon, continuing through
the overnight hours. A few storms may become severe.

A few isolated storms may linger Saturday morning.

Next storm chances develop overnight Monday into Tuesday.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-050530-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
1229 AM CDT Fri Sep 4 2026

This Hazardous Weather Outlook is for the open waters of Lake Michigan.

.DAY ONE...Tonight

Chances for thunderstorms at times tonight, especially later in
the evening and overnight.

Marine Dense Fog may develop over the middle third of the lake
overnight.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Isolated to scattered storms Friday afternoon across the southern
half of the lake, continuing through the overnight hours. A few
storms may become severe.

A few isolated storms may linger Saturday morning across the
southern half.

Next storm chances develop overnight Monday into Tuesday across
all of Lake Michigan.

www.weather.gov/mkx

In the hours before

Local storm report, Sep 3, 11:29 PM CDT, 1 hour 42 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1129 PM CDT Thu Sep 3 2026

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

1128 PM     Hail             1 W Mayville            43.50N 88.56W
09/03/2026  M1.00 Inch       Dodge              WI   Public

            Report from mPING: Quarter (1.00 in.).

&&

BHS
Local storm report, Sep 3, 11:34 PM CDT, 1 hour 37 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1134 PM CDT Thu Sep 3 2026

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

1132 PM     Hail             Mayville                43.50N 88.55W
09/03/2026  M1.75 Inch       Dodge              WI   Emergency Mngr

            Relay report from NWSChat.

&&

BHS
Local storm report, Sep 3, 11:59 PM CDT, 1 hour 12 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1159 PM CDT Thu Sep 3 2026

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

1137 PM     Tstm Wnd Dmg     3 SSW Mayville          43.46N 88.56W
09/03/2026                   Dodge              WI   Emergency Mngr

            Two full sized trees down blocking lanes of
            traffic near CoRd V and Raasch Hill Rd -
            south of Mayville. Time estimated from
            radar.

&&

BHS
Local storm report, Sep 4, 12:14 AM CDT, 57 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1214 AM CDT Fri Sep 4 2026

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

1130 PM     Tstm Wnd Dmg     1 N Iron Ridge          43.41N 88.53W
09/03/2026                   Dodge              WI   Fire Dept/Rescue

            Report of tree damage by E Neda Rd near Iron
            Ridge. Time estimated from radar.

&&

BHS
Special weather statement, Sep 4, 12:33 AM CDT, 38 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1233 AM CDT Fri Sep 4 2026

WIZ051-040615-
Fond Du Lac WI-
1233 AM CDT Fri Sep 4 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN FOND DU LAC COUNTY
THROUGH 115 AM CDT...

At 1232 AM CDT, Doppler radar was tracking a strong thunderstorm near
Southern Lake Winnebago, or 7 miles north of North Fond Du Lac,
moving southeast at 20 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Fond Du Lac, North Fond Du Lac, Southern Lake Winnebago, Taycheedah,
Mount Calvary, Van Dyne, Calvary, Peebles, Marytown, Johnsburg, Pipe,
and Town of Forest.

This includes the following highways...
 U.S. Highway 151 between mile markers 166 and 169.
 Interstate 41 between mile markers 108 and 109.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4388 8816 4369 8832 4389 8861 4390 8860
      4389 8841 4394 8840 4394 8816
TIME...MOT...LOC 0532Z 294DEG 15KT 4392 8847

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

KUROSKI
Local storm report, Sep 4, 1:06 AM CDT, 5 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
106 AM CDT Fri Sep 4 2026

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

1251 AM     Tstm Wnd Gst     2 WSW Fond Du Lac       43.77N 88.49W
09/04/2026  M52 MPH          Fond du Lac        WI   ASOS

            REPORTED AT KFLD.

&&

BHS

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 3, 8:54 PM CDTSpecial Weather StatementMKXMarquette51 min
Sep 3, 10:20 PM CDTSpecial Weather StatementMKXFond du Lac40 min
Sep 3, 10:25 PM CDTSevere Thunderstorm WarningMKXDodge, Fond du Lac, Green Lake35 min
Sep 3, 10:53 PM CDTSevere Thunderstorm Warning Considerable damage threatMKXDodge, Fond du Lac, Washington52 min
Sep 3, 11:23 PM CDTSevere Thunderstorm Warning Considerable damage threatMKXDodge, Washington67 min
Sep 3, 11:30 PM CDTAreal Flood AdvisoryMKXDodge, Fond du Lac, Washington2 hr
Sep 3, 11:45 PM CDTSevere Thunderstorm Warning Destructive damage threatMKXDodge, Washington30 min
Sep 4, 12:04 AM CDTSevere Thunderstorm Warning Considerable damage threatMKXDodge, Milwaukee, Ozaukee, Washington, Waukesha56 min
Sep 4, 12:28 AM CDTAreal Flood AdvisoryMKXMilwaukee, Ozaukee, Washington, Waukesha103 min
Sep 4, 12:33 AM CDTSpecial Weather StatementMKXFond du Lac42 min
Sep 4, 12:38 AM CDTSevere Thunderstorm WarningMKXFond du Lac52 min
Sep 4, 12:50 AM CDTSpecial Marine WarningMKX85 min
Sep 4, 12:54 AM CDTSevere Thunderstorm WarningMKXMilwaukee, Ozaukee, Washington, Waukesha51 min
Sep 4, 1:03 AM CDTSevere Thunderstorm WarningMKXFond du Lac, Sheboygan42 min
Sep 4, 1:17 AM CDTSpecial Marine WarningMKX118 min
Sep 4, 1:34 AM CDTSevere Thunderstorm WarningMKXSheboygan41 min
Sep 4, 1:40 AM CDTSevere Thunderstorm Warning Considerable damage threatMKXFond du Lac, Green Lake, Marquette80 min
Sep 4, 2:11 AM CDTSpecial Marine WarningMKX64 min
Sep 4, 2:14 AM CDTSevere Thunderstorm WarningMKXSheboygan16 min
Sep 4, 2:35 AM CDTAreal Flood AdvisoryMKXFond du Lac2 hr
Sep 4, 2:37 AM CDTSevere Thunderstorm WarningMKXDodge, Fond du Lac, Ozaukee, Sheboygan, Washington53 min
Sep 4, 3:08 AM CDTSpecial Marine WarningMKX97 min
Sep 4, 5:29 AM CDTAreal Flood AdvisoryMKXSheboygan3 hr
Sep 4, 5:56 AM CDTFlash Flood WarningMKXSheboygan3 hr
Sep 4, 6:26 AM CDTAreal Flood AdvisoryMKXFond du Lac, Green Lake, Marquette3 hr
Sep 4, 7:40 AM CDTAreal Flood AdvisoryMKXFond du Lac2 hr
Sep 4, 8:25 AM CDTSpecial Marine WarningMKX65 min
Sep 4, 9:24 AM CDTSpecial Weather StatementMKXDane51 min
Sep 4, 9:35 AM CDTSpecial Weather StatementMKXWaukesha40 min
Sep 4, 10:39 AM CDTSpecial Weather StatementMKXMilwaukee, Racine51 min
Sep 4, 10:41 AM CDTSpecial Marine WarningMKX33 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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.