Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 182, NWS Milwaukee, WI

July 1, 2026Fond du Lac County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 1, 2026, 12:14 PM CDT for Fond du Lac County, Wisconsin. It was in force for 46 min. 6 reports 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
Jul 1, 2026, 12:14 PM CDT (17:14 UTC)
Expired
Jul 1, 2026, 1:00 PM CDT
In force
46 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Fond du Lac County, WI

The radar

The Green Bay radar (KGRB), 86 km from the middle of the area, began a volume at 17:14 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.

What was reported inside it

TimeReportWhereRemark
Jul 1, 12:25 PM CDTHAIL 1.753 Se Fond Du Lac, WISize est from social media pics sent to local media shared by County EM. Time est from radar.
Jul 1, 12:25 PM CDTHAIL 23 Nw Eden, WISize est from social media pics sent to local media shared by County EM. Time est from radar.
Jul 1, 12:25 PM CDTHAIL 2.54 Se Fond Du Lac, WISize est from social media pics sent to local media shared by County EM. Time est from radar.
Jul 1, 12:25 PM CDTHAIL 33 Se Fond Du Lac, WIPicture from social media that included a ruler. Time est from radar.
Jul 1, 12:30 PM CDTHAIL 1.54 Nnw Eden, WI4 miles ESE of Fond du Lac. Time est from radar.
Jul 1, 12:38 PM CDTHAIL 1.53 E Fond Du Lac, WIReport from mPING: Ping Pong Ball (1.50 in.).

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 6 storm reports to this severe thunderstorm warning; the first came 11 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 watch it was issued in

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

IssuedProductOfficeLasted
Jul 1, 11:05 AM CDTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 5.2 hours before the alert went out and 399 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, Lincoln, IL at 12:00Z on 2026-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1552 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, Lincoln, IL at 12:00Z on 2026-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
1552 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
1038 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

231 
WUUS53 KMKX 011714
SVRMKX
WIC039-011800-
/O.NEW.KMKX.SV.W.0182.260701T1714Z-260701T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
1214 PM CDT Wed Jul 1 2026

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Eastern Fond du Lac County in east central Wisconsin...

* Until 100 PM CDT.

* At 1214 PM CDT, a severe thunderstorm was located near Oakfield, or
  near North Fond Du Lac, moving east at 40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Fond Du Lac, Southern Lake Winnebago, Taycheedah, Eden, Mount
  Calvary, St. Cloud, Calvary, Peebles, Town of Forest, Johnsburg,
  Dundee, and Waucousta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4362 8816 4363 8839 4389 8844 4390 8816
TIME...MOT...LOC 1714Z 263DEG 34KT 4375 8857 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CMILLER
5 follow-up statements
508 
WWUS53 KMKX 011717 RRA
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1217 PM CDT Wed Jul 1 2026

WIC039-011800-
/O.CON.KMKX.SV.W.0182.000000T0000Z-260701T1800Z/
Fond du Lac WI-
1217 PM CDT Wed Jul 1 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT
FOR EASTERN FOND DU LAC COUNTY...

At 1217 PM CDT, a severe thunderstorm was located near North Fond Du
Lac, moving east at 40 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Fond Du Lac, Southern Lake Winnebago, Taycheedah, Eden, Mount
Calvary, St. Cloud, Calvary, Peebles, Town of Forest, Johnsburg,
Dundee, and Waucousta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4362 8816 4363 8839 4389 8844 4390 8816
TIME...MOT...LOC 1717Z 263DEG 34KT 4375 8853 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CMILLER
936 
WWUS53 KMKX 011730
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1230 PM CDT Wed Jul 1 2026

WIC039-011800-
/O.CON.KMKX.SV.W.0182.000000T0000Z-260701T1800Z/
Fond du Lac WI-
1230 PM CDT Wed Jul 1 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT
FOR EASTERN FOND DU LAC COUNTY...

At 1229 PM CDT, a severe thunderstorm was located near Fond Du Lac,
moving east at 40 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Trained weather spotters reported golf ball sized hail on 
         the south side of Fond du Lac.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Fond Du Lac, Southern Lake Winnebago, Taycheedah, Eden, Mount
Calvary, St. Cloud, Calvary, Peebles, Town of Forest, Johnsburg,
Dundee, and Waucousta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4362 8816 4363 8839 4389 8844 4390 8816
TIME...MOT...LOC 1729Z 263DEG 34KT 4376 8837 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CMILLER
382 
WWUS53 KMKX 011738
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1238 PM CDT Wed Jul 1 2026

WIC039-011800-
/O.CON.KMKX.SV.W.0182.000000T0000Z-260701T1800Z/
Fond du Lac WI-
1238 PM CDT Wed Jul 1 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT
FOR EASTERN FOND DU LAC COUNTY...

At 1236 PM CDT, a severe thunderstorm was located 7 miles east of
Fond Du Lac, moving east at 40 mph.

THIS IS A DESTRUCTIVE STORM FOR Eden, Mount Calvary, and the eastern 
half of Fond du Lac County.

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

SOURCE...Trained weather spotters reported baseball size hail on the 
         southeast side of Fond du Lac.

IMPACT...People and animals outdoors will be severely injured. 
         Expect shattered windows, extensive damage to roofs, 
         siding, and vehicles.

Locations impacted include...
Fond Du Lac, Southern Lake Winnebago, Taycheedah, Eden, Mount
Calvary, St. Cloud, Calvary, Peebles, Town of Forest, Johnsburg,
Dundee, and Waucousta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4362 8816 4363 8839 4389 8844 4390 8816
TIME...MOT...LOC 1736Z 263DEG 34KT 4377 8828 

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CMILLER
270 
WWUS53 KMKX 011746
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1246 PM CDT Wed Jul 1 2026

WIC039-011800-
/O.CON.KMKX.SV.W.0182.000000T0000Z-260701T1800Z/
Fond du Lac WI-
1246 PM CDT Wed Jul 1 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT
FOR EAST CENTRAL FOND DU LAC COUNTY...

At 1246 PM CDT, a severe thunderstorm was located 7 miles southwest
of Elkhart Lake, or 9 miles west of Plymouth, moving east at 40 mph.

THIS IS A DESTRUCTIVE STORM FOR Eastern Fond du Lac County.

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

SOURCE...Trained weather spotters. This storm has a history of 
         producing large destructive hail.

IMPACT...People and animals outdoors will be severely injured. 
         Expect shattered windows, extensive damage to roofs, 
         siding, and vehicles.

Locations impacted include...
Mount Calvary, St. Cloud, and Town of Forest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 4367 8816 4369 8830 4383 8829 4385 8816
TIME...MOT...LOC 1746Z 263DEG 34KT 4378 8815 

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CMILLER
607 
WWUS53 KMKX 011757
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1257 PM CDT Wed Jul 1 2026

WIC039-011807-
/O.EXP.KMKX.SV.W.0182.000000T0000Z-260701T1800Z/
Fond du Lac WI-
1257 PM CDT Wed Jul 1 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL FOND DU LAC
COUNTY WILL EXPIRE AT 100 PM CDT...

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

A Severe Thunderstorm Watch remains in effect until 400 PM CDT for
east central Wisconsin.

&&

LAT...LON 4367 8816 4369 8830 4383 8829 4385 8816
TIME...MOT...LOC 1757Z 263DEG 34KT 4379 8802 

$$

CMILLER

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 Jul 1, 11:25 AM CDT, 49 minutes earlier. Its key messages:

  • An Extreme Heat Warning remains in effect for all of southern Wisconsin through early this evening. Additional heat headlines may be needed into the rest of the week, but some uncertainty remains due to clouds and rain chances.
  • Scattered thunderstorms mainly north of a Lone Rock to Sheboygan line through early this afternoon. Damaging winds and large hail are the main hazards of concern.
  • There are increasing chances (40 to 70 percent) for thunderstorms later this evening and tonight, with the better chances north of a Lone Rock to Sheboygan line. Some strong to severe storms with heavy rainfall may occur at times, mainly in the evening. Damaging winds and large hail are the main hazards of concern.
  • There are periodic chances (40 to 60 percent) for thunderstorms Thursday into the holiday weekend. Some strong to severe storms with heavy rainfall may occur at times, though confidence remains low with the timing of each round of storms. This may impact outdoor holiday activities at times, so keep up with the forecast.
Area forecast discussion, Jul 1, 11:25 AM CDT, 49 minutes before
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
1125 AM CDT Wed Jul 1 2026

.KEY MESSAGES...

- An Extreme Heat Warning remains in effect for all of southern
  Wisconsin through early this evening. Additional heat
  headlines may be needed into the rest of the week, but some
  uncertainty remains due to clouds and rain chances.

- Scattered thunderstorms mainly north of a Lone Rock to
  Sheboygan line through early this afternoon. Damaging winds
  and large hail are the main hazards of concern.

- There are increasing chances (40 to 70 percent) for
  thunderstorms later this evening and tonight, with the better
  chances north of a Lone Rock to Sheboygan line. Some strong to
  severe storms with heavy rainfall may occur at times, mainly
  in the evening. Damaging winds and large hail are the main
  hazards of concern.

- There are periodic chances (40 to 60 percent) for
  thunderstorms Thursday into the holiday weekend. Some strong
  to severe storms with heavy rainfall may occur at times,
  though confidence remains low with the timing of each round of
  storms. This may impact outdoor holiday activities at times,
  so keep up with the forecast.

&&

.UPDATE...
Issued 1125 AM CDT Wed Jul 1 2026

Thunderstorms continue to ride the northwest periphery of the
high pressure ridge this morning. Through early afternoon, the
greatest area of concern is across central WI, from Marquette
through Sheboygan counties. A severe thunderstorm watch is now
in effect until 3 PM for this cluster of storms.

No lack of instability, though these storms are riding the
southern periphery of better effective shear. Boundaries from
storms earlier this morning will pose a challenge as we expect
storm mode to ride a fine line of multicell/supercell. Damaging
winds and large hail are the primary concerns. That said, given
MLCAPE around 2500 J/kg and and 0-3km CAPE of 75-100 J/kg,
strong updrafts and boundary interactions will pose a tornado
risk.

This activity should exit to the east by 3 PM, and we will be
watching for how the atmosphere reloads to our west/northwest
for this evening into the overnight hours. CAMs continue to
insist on MCSs punching through the ridge (which have not come
to fruition the past few days). Broader resolution models
continue to respect the ridge more. Current expectations are for
convection that develops to our west/north to gradually
approach/enter northwest portions of our area during the
mid/late evening hours, and with potential outflow sagging south
with time overnight. There will be a continued risk for severe
(damaging wind/hail), but will need to watch for slow storm
movement and a potential for flash flooding with PWs around two
inches.

Gagan

&&

.SHORT TERM...
Issued 146 AM CDT Wed Jul 1 2026

Today through Friday night:

The Extreme Heat Warning will remain in effect until early this
evening. An extension or a Heat Advisory issuance into later in
the week may eventually be needed, depending on how many clouds
and showers/storms occur. Will likely wait on how clouds and
possible shower/storm trends play out overnight into later today
before making further decisions on the heat headlines for the
rest of the week. Heat index values in the 90s to low 100s are
forecast for Thursday and Friday.

There is a chance (20 to 40 percent) for showers and storms
developing into this morning, before pushing northeastward by
midday. The southwesterly low level jet will be the key feature
to watch, as it develops more of a nose and shifts northeastward
toward the area.

CAMs seem to be favoring scattered showers and storms developing
in southeast Minnesota into southwest Wisconsin by 09Z or so,
shifting northeast into the morning hours. Given the setup with
the southwesterly flow through a deep layer focused from Iowa
into southwest and central Wisconsin, would expect any showers
and storms that develop with the low level jet nose to push
northeast and ride the ridge through these areas.

There is a decent amount of elevated CAPE (1500 to 2500 J/kg),
with weaker deep layer bulk shear around 20 knots increasing to
30 to 35 knots in the morning. Thus, any stronger storm could
produce hail, gusty winds and locally heavy rainfall, given the
very moist airmass in place and storms possibly moving over the
same areas.

There could be an isolated storm that develops this afternoon
northwest of Madison, closer to the low level jet axis. It would
be elevated in nature, but given the high CAPE over 3000 J/kg and
30 to 35 knots of deep layer bulk shear, could see a strong to
severe storm occur.

CAMs suggest clusters of thunderstorms may develop along a
surface boundary in north central Iowa to north central and
northwest Wisconsin by early evening, then shifts east
northeast with the aid of the low level jet toward and into the
northern portions of the area during the evening and overnight.
There is enough mean layer CAPE and deep layer bulk shear for
more strong to severe storm potential, with damaging winds and
hail the main hazards. Heavy rainfall may occur as well.

The low level jet should focus more into southern Wisconsin
Thursday, with a surface boundary in the form of a stationary
front developing as well. These features may help to focus more
showers and thunderstorms at times Thursday into Thursday night,
as well as into Friday. There remains a strong to severe storm
risk with heavy rainfall as well for this period, as high CAPE
and moderate deep layer bulk shear values persist. Details on
this potential will be more clear once the convection into
tonight shows its hand.

Wood

&&

.LONG TERM...
Issued 146 AM CDT Wed Jul 1 2026

Saturday through Tuesday:

Active conditions continue into the holiday weekend, with
multiple batches of thunderstorms expected Saturday through
Sunday.

Subtropical ridging will gradually break down over the eastern
CONUS this weekend, allowing for modestly cooler temperatures
and heat indices. A slow-moving surface boundary will
concurrently slide into southern Wisconsin, supporting daily
chances for showers and thunderstorms both Saturday and Sunday.
Overall storm chances are greatest (50 to 60 percent or more)
on Saturday, when a shortwave trough is progged to move across
southern Wisconsin.

Most favored locations for storms on Sunday will depend on
where the surface boundary sets up in the wake of Saturday's
storms, with boundary location remaining a source of uncertainty
at this time. Will continue to monitor trends over coming
forecasts.

Any weekend storms will be capable of producing cloud-to-ground
lightning and heavy downpours, with a few strong to severe
storms possible. Continue to monitor the forecast is planning to
be outdoors. Widespread precipitation chances wane moving into
the beginning of next week, as broad high pressure builds over
the western Great Lakes.

Saturday/Fourth of July looks to be a potentially active
Independence Day, as an upper shortwave and surface boundary
move across the region. Aforementioned features will be
impinging upon a still unseasonably moist airmass, which will
be supportive of abundant instability. While modest, initial
forecast soundings suggest bulk shear values supportive of at
least loosely-organized convection, so will need to monitor for
some severe weather potential over coming forecasts.

Storms will also be capable of producing heavy downpours given
precipitable water values in the 1.60 to 1.80 inch or greater
range. Regardless of severity, any convection will be capable of
producing cloud-to-ground lightning, which will be hazardous to
anybody attending outdoor holiday festivities. Keep up with the
forecast if planning to be outside Saturday.

Depending on the surface boundary's location in the wake of
Saturday's storms, could see another batch of convection during
the afternoon/evening hours on Sunday. Have maintained 20 to 40
percent precip probabilities from the NBM in the evening
forecast update, given lingering uncertainties related to
surface boundary positioning.

Expect that values will continue to fluctuate with the modeled
positioning of the boundary over coming forecasts, with more
refined locations of favored storm development emerging during
the Friday to Saturday time period. Like Saturday's
thunderstorms, will need to monitor for a few severe storms with
heavy downpours, in addition to lightning potential in all
thunderstorms, in any Sunday activity.

Quigley

&&

.AVIATION...
Issued 510 AM CDT Wed Jul 1 2026

VFR conditions expected for the majority of today, with
scattered deck near 4000 ft. Isolated storms moving
northeastward through central Wisconsin may produce gusty
erratic winds this morning, but are expected to remain north of
the MSN/MKE corridor. This evening into tonight, storms will
progress southeastward through the area, with isolated severe
storms possible. Winds will become gusty and southwesterly
outside of storms this afternoon, diminishing and becoming
westerly tonight. Severe threat ends after midnight tonight.

MH

&&

.MARINE...
Issued 146 AM CDT Wed Jul 1 2026

Modest to breezy south to southwest winds will prevail into
Thursday, then lighter winds should occur into Friday, as high
pressure around 30.1 inches remains to the southeast of the
Great Lakes, while low pressure around 29.5 inches moves slowly
east across central Manitoba into James Bay.

Chances for thunderstorms are forecast across the northern half
of the lake through tonight. There are chances for
thunderstorms across the southern two thirds of the lake
Thursday into Friday evening, and across the southern half of
the lake later Friday night into Sunday. Some strong to severe
storms may occur at times, though confidence remains low with
the timing of each round of storms.

Patchy marine fog will be possible at times, primarily over the
northern half of the lake, as the warm and moist airmass moves
over the lake. There may also be some patchy dense fog along the
Lake Michigan shoreline into this morning.

Southwest winds may approach Small Craft Advisory levels today
into early this evening for the nearshore waters, mainly near
the shoreline.

Wood

&&

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

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Hazardous weather outlook, Jul 1, 1:07 AM CDT, 11 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
107 AM CDT Wed Jul 1 2026

WIZ046-047-051-052-056>060-062>072-020615-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
107 AM CDT Wed Jul 1 2026

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

.DAY ONE...Today and Tonight

An Extreme Heat Warning remains in effect until early this
evening, for heat index values in the middle to upper 70s
overnight, and up to around 106 degrees later today. Additional
heat headlines may be needed tonight.

There are chances for thunderstorms generally along and north of
a Lone Rock to Sheboygan line into this morning. A stronger storm
may produce hail, gusty winds and locally heavy rainfall.

There is a small chance of a thunderstorm this afternoon northwest
of Madison. A strong to severe storm with strong winds and hail
would be possible, if it develops.

There are increasing chances for thunderstorms later this
afternoon and tonight, with the better chances north of a Lone
Rock to Sheboygan line. Some strong to severe storms with heavy
rainfall may occur at times, mainly in the evening. Damaging winds
and hail are the main hazards.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Hot and humid conditions with daily maximum heat index values in
the 90s to low 100s are expected into Friday. Additional heat
headlines may be needed, depending on how much cloud cover occurs.

There are periodic chances for thunderstorms Thursday into the
holiday weekend. Some strong to severe storms with heavy rainfall
may occur at times, though confidence remains low with the timing
of each round of storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed at times into the weekend.

LMZ643>646-020615-
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-
107 AM CDT Wed Jul 1 2026

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

.DAY ONE...Today and Tonight

Patchy dense fog may occur along the Lake Michigan shoreline into
this morning.

A few thunderstorms are possible into this morning, mainly north
of Port Washington.

Southwest winds will approach Small Craft Advisory levels today.

There are chances for thunderstorms tonight, with the better
chances north of Port Washington. Some strong to severe storms may
occur at times, mainly in the evening. Damaging winds and hail
are the main hazards.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

There are periodic chances for thunderstorms Thursday into the
holiday weekend. Some strong to severe storms may occur at times,
though confidence remains low with the timing of each round of
storms.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-020615-
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-
107 AM CDT Wed Jul 1 2026

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

.DAY ONE...Today and Tonight

Patchy dense fog may occur over northern portions of the lake.

There are mainly small chances for thunderstorms into this
morning over northern portions of the lake, with chances for
storms across this area tonight. Some strong to severe storms are
possible, mainly in the evening. Damaging winds and hail are the
main hazards.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Areas of dense fog may occur at times into the holiday weekend,
due to the very warm and humid airmass over the colder waters of
Lake Michigan.

There are chances for thunderstorms across the southern two
thirds of the lake Thursday into Friday night, and across the
southern half of the lake over the holiday weekend. Some strong
to severe storms may occur at times, though confidence remains low
with the timing of each round of storms.

Wood
www.weather.gov/mkx

In the hours before

Special weather statement, Jul 1, 8:30 AM CDT, 3 hours 44 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
830 AM CDT Wed Jul 1 2026

WIZ051-011400-
Fond Du Lac WI-
830 AM CDT Wed Jul 1 2026

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL FOND DU LAC COUNTY
THROUGH 900 AM CDT...

At 830 AM CDT, Doppler radar was tracking a strong thunderstorm over
North Fond Du Lac, moving northeast at 30 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Fond Du Lac, North Fond Du Lac, Southern Lake Winnebago, Taycheedah,
Lamartine, Peebles, and Town of Forest.

This includes the following highways...
 U.S. Highway 151 between mile markers 156 and 163, and between mile
markers 165 and 169.
 Interstate 41 between mile markers 95 and 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4376 8824 4370 8858 4379 8864 4389 8848
      4389 8841 4394 8840 4394 8839 4393 8839
TIME...MOT...LOC 1330Z 240DEG 24KT 4378 8851

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

CMILLER
Special weather statement, Jul 1, 9:02 AM CDT, 3 hours 12 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
902 AM CDT Wed Jul 1 2026

WIZ051-052-011430-
Sheboygan WI-Fond Du Lac WI-
902 AM CDT Wed Jul 1 2026

...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL FOND DU LAC AND
NORTHWESTERN SHEBOYGAN COUNTIES THROUGH 930 AM CDT...

At 902 AM CDT, Doppler radar was tracking a strong thunderstorm near
St Anna, or 10 miles northwest of Plymouth, moving northeast at 30
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 hail damage to vegetation is
         possible.

Locations impacted include...
Elkhart Lake, Mount Calvary, St. Cloud, Glenbeulah, and Town of
Forest.

This includes Interstate 43 near mile marker 135.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4389 8774 4374 8820 4382 8826 4389 8814
TIME...MOT...LOC 1402Z 240DEG 24KT 4381 8816

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

CMILLER
Local storm report, Jul 1, 10:47 AM CDT, 1 hour 27 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1047 AM CDT Wed Jul 1 2026

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

0915 AM     Hail             Elkhart Lake            43.83N 88.02W
07/01/2026  M0.88 Inch       Sheboygan          WI   Law Enforcement

            Elkhart Lake PD reports 5 minutes of dime to
            nickel sized hail.

&&

Halbach
Local storm report, Jul 1, 11:30 AM CDT, 44 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1130 AM CDT Wed Jul 1 2026

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

1130 AM     Hail             5 SW Kingston           43.66N 89.21W
07/01/2026  M0.70 Inch       Green Lake         WI   911 Call Center

&&

Halbach
Local storm report, Jul 1, 12:03 PM CDT, 11 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1203 PM CDT Wed Jul 1 2026

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

1200 PM     Hail             4 S Rosendale           43.75N 88.68W
07/01/2026  E1.00 Inch       Fond du Lac        WI   Public

            Report from mPING: Quarter (1.00 in.).

&&

Halbach
Local storm report, Jul 1, 12:14 PM CDT, 0 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
1214 PM CDT Wed Jul 1 2026

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

1210 PM     Hail             4 S Rosendale           43.75N 88.68W
07/01/2026  E1.25 Inch       Fond du Lac        WI   Public

            Report from mPING: Half Dollar (1.25 in.).

&&

Halbach

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 5:18 AM CDTSevere Thunderstorm WarningMKXSauk42 min
Jul 1, 6:04 AM CDTSevere Thunderstorm WarningMKXMarquette56 min
Jul 1, 6:36 AM CDTSpecial Weather StatementMKXMarquette24 min
Jul 1, 6:45 AM CDTSevere Thunderstorm WarningMKXGreen Lake, Marquette45 min
Jul 1, 7:20 AM CDTSevere Thunderstorm WarningMKXFond du Lac, Green Lake28 min
Jul 1, 8:03 AM CDTSpecial Weather StatementMKXFond du Lac27 min
Jul 1, 8:04 AM CDTSpecial Weather StatementMKXGreen Lake26 min
Jul 1, 8:30 AM CDTSpecial Weather StatementMKXFond du Lac30 min
Jul 1, 9:02 AM CDTSpecial Weather StatementMKXSheboygan28 min
Jul 1, 9:07 AM CDTSevere Thunderstorm WarningMKXSheboygan38 min
Jul 1, 10:04 AM CDTSevere Thunderstorm WarningMKXSauk41 min
Jul 1, 10:41 AM CDTSevere Thunderstorm WarningMKXColumbia, Marquette49 min
Jul 1, 11:17 AM CDTSevere Thunderstorm WarningMKXColumbia, Green Lake, Marquette43 min
Jul 1, 11:41 AM CDTSevere Thunderstorm WarningMKXFond du Lac64 min
Jul 1, 12:42 PM CDTSevere Thunderstorm Warning Considerable damage threatMKXSheboygan48 min
Jul 1, 12:50 PM CDTSevere Thunderstorm Warning Destructive damage threatMKXSheboygan25 min
Jul 1, 1:03 PM CDTSpecial Marine WarningMKX64 min
Jul 1, 1:03 PM CDTSevere Thunderstorm Warning Destructive damage threatMKXSheboygan29 min
Jul 1, 4:22 PM CDTSpecial Weather StatementMKXLafayette23 min
Jul 1, 4:49 PM CDTSpecial Weather StatementMKXGreen26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.