Alert archive / Wisconsin / Beach Hazards Statements in 2025

Beach Hazards Statement 11, NWS Milwaukee, WI

August 16, 20255 counties in Wisconsin

NWS Milwaukee, WI issued this beach hazards statement at Aug 16, 2025, 6:26 PM CDT for 5 counties in Wisconsin. It took effect at Aug 17, 2025, 8:00 AM CDT. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued
Aug 16, 2025, 6:26 PM CDT (23:26 UTC)
In effect from
Aug 17, 2025, 8:00 AM CDT
Expired
Aug 18, 2025, 6:00 PM CDT
In force
34 hr
Issued by
NWS Milwaukee, WI

Counties Kenosha County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Sheboygan County, WI

The radar

The Milwaukee radar (KMKX), 58 km from the middle of the area, began a volume at 23:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.4 hours before the alert went out and 155 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, Green Bay/Straub, WI at 12:00Z on 2025-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 177 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, Green Bay/Straub, WI at 12:00Z on 2025-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
177 J/kg
Mixed-layer CIN
-223 J/kg
Mixed-layer LCL
1561 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

701 
WHUS43 KMKX 162326
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
626 PM CDT Sat Aug 16 2025

WIZ052-060-066-071-072-170730-
/O.NEW.KMKX.BH.S.0011.250817T1300Z-250818T1800Z/
Sheboygan-Ozaukee-Milwaukee-Racine-Kenosha-
626 PM CDT Sat Aug 16 2025

...BEACH HAZARDS STATEMENT IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY AFTERNOON...

* WHAT...Life threatening waves of 3 to 7 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha 
  Counties.

* WHEN...From Sunday morning through Monday afternoon.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...From Sunday morning through Sunday evening,
  northerly exposed beaches, piers, and/or breakwalls will be most
  vulnerable to these dangerous currents. By late Monday morning,
  southerly exposed areas will be at greater risk as wind and 
  wave directions veer southeasterly. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$

Sheppard
8 follow-up statements
745 
WHUS43 KMKX 170739
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
239 AM CDT Sun Aug 17 2025

WIZ052-060-066-071-072-171545-
/O.CON.KMKX.BH.S.0011.250817T1300Z-250818T1800Z/
Sheboygan-Ozaukee-Milwaukee-Racine-Kenosha-
239 AM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 AM CDT THIS
MORNING THROUGH MONDAY AFTERNOON...

* WHAT...Life threatening waves of 3 to 6 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha 
  Counties.

* WHEN...From 8 AM CDT this morning through Monday afternoon.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...From this morning through this evening,
  northerly exposed beaches, piers, and/or breakwalls will be most
  vulnerable to these dangerous currents. By late Monday morning,
  southerly exposed areas will be at greater risk as wind and 
  wave directions veer southeasterly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$
702 
WHUS43 KMKX 171420
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
920 AM CDT Sun Aug 17 2025

WIZ052-060-066-071-072-172230-
/O.CON.KMKX.BH.S.0011.000000T0000Z-250818T1800Z/
Sheboygan-Ozaukee-Milwaukee-Racine-Kenosha-
920 AM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY
AFTERNOON...

* WHAT...Life threatening waves of 3 to 6 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha 
  Counties.

* WHEN...Through Monday afternoon.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...From this morning through this evening, 
  northerly exposed beaches, piers, and/or breakwalls will be 
  most vulnerable to these dangerous currents. By late Monday 
  morning, southerly exposed areas will be at greater risk as 
  wind and wave directions veer southeasterly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$
MRC
349 
WHUS43 KMKX 172018
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
318 PM CDT Sun Aug 17 2025

WIZ052-060-066-071-072-180430-
/O.CON.KMKX.BH.S.0011.000000T0000Z-250818T1800Z/
Sheboygan-Ozaukee-Milwaukee-Racine-Kenosha-
318 PM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY
AFTERNOON...

* WHAT...Life threatening waves of 3 to 6 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha 
  Counties.

* WHEN...Through Monday afternoon.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...Through this evening, northerly exposed
  beaches, piers, and/or breakwalls will be most vulnerable to
  these dangerous currents. By Monday morning, southerly exposed 
  areas will be at greater risk as wind and wave directions veer 
  southeasterly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$

Sheppard
528 
WHUS43 KMKX 172226
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
526 PM CDT Sun Aug 17 2025

WIZ052-060-066-071-072-180630-
/O.CON.KMKX.BH.S.0011.000000T0000Z-250818T1800Z/
Sheboygan-Ozaukee-Milwaukee-Racine-Kenosha-
526 PM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY
AFTERNOON...

* WHAT...Life threatening waves of 3 to 6 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha 
  Counties.

* WHEN...Through Monday afternoon.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...Through this evening, northerly exposed 
  beaches, piers, and/or breakwalls will be most vulnerable to 
  these dangerous currents. By Monday morning, southerly exposed 
  areas will be at greater risk as wind and wave directions veer 
  southeasterly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$
643 
WHUS43 KMKX 180859
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
359 AM CDT Mon Aug 18 2025

WIZ052-060-066-071-072-181700-
/O.EXT.KMKX.BH.S.0011.000000T0000Z-250818T2000Z/
Sheboygan-Ozaukee-Milwaukee-Racine-Kenosha-
359 AM CDT Mon Aug 18 2025

...BEACH HAZARDS STATEMENT NOW IN EFFECT UNTIL 3 PM CDT THIS
AFTERNOON...

* WHAT...Life threatening waves of 3 to 6 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha 
  Counties.

* WHEN...Until 3 PM CDT this afternoon.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...This morning through the early afternoon
  southerly exposed areas will be at greater risk as wind and wave 
  directions veer southeasterly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$
127 
WHUS43 KMKX 181455
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
955 AM CDT Mon Aug 18 2025

WIZ052-060-066-071-072-182000-
/O.CON.KMKX.BH.S.0011.000000T0000Z-250818T2000Z/
Sheboygan-Ozaukee-Milwaukee-Racine-Kenosha-
955 AM CDT Mon Aug 18 2025

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 3 PM CDT THIS
AFTERNOON...

* WHAT...Life threatening waves of 3 to 6 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, Milwaukee, Racine and Kenosha 
  Counties.

* WHEN...Until 3 PM CDT this afternoon.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...Southerly exposed lakeshore areas will be
  at greater risk given southeasterly wind and wave directions.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$
461 
WHUS43 KMKX 181953
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
253 PM CDT Mon Aug 18 2025

WIZ071-072-182100-
/O.EXP.KMKX.BH.S.0011.000000T0000Z-250818T2000Z/
Racine-Kenosha-
253 PM CDT Mon Aug 18 2025

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 3 PM CDT THIS
AFTERNOON...

Waves continue to gradually subside this evening but wave around 3
feet and moderate swim risk conditons may linger through the 
remainder of the evening into the early evening.

$$

WIZ052-060-066-182300-
/O.EXT.KMKX.BH.S.0011.000000T0000Z-250818T2300Z/
Sheboygan-Ozaukee-Milwaukee-
253 PM CDT Mon Aug 18 2025

...BEACH HAZARDS STATEMENT NOW IN EFFECT UNTIL 6 PM CDT THIS
EVENING...

* WHAT...Life threatening waves of 3 to 5 feet and dangerous 
  currents are expected.

* WHERE...Sheboygan, Ozaukee, and Milwaukee Counties.

* WHEN...Until 6 PM CDT this evening.

* IMPACTS...Dangerous swimming conditions are expected due to 
  high waves and onshore winds.

* ADDITIONAL DETAILS...Southerly exposed lakeshore areas will be 
  at greater risk given southeasterly wind and wave directions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay out of the water and away from dangerous areas like piers
and breakwalls.  Strong structural and longshore currents are
expected.  Rip currents are possible.

&&

$$
952 
WHUS43 KMKX 182258
CFWMKX

Lakeshore Hazard Message
National Weather Service Milwaukee/Sullivan WI
558 PM CDT Mon Aug 18 2025

WIZ052-060-066-190000-
/O.EXP.KMKX.BH.S.0011.000000T0000Z-250818T2300Z/
Sheboygan-Ozaukee-Milwaukee-
558 PM CDT Mon Aug 18 2025

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 6 PM CDT THIS EVENING...

Waves up to 4 feet will continue to diminish through mid evening.
Therefore, the Beach Hazards Statement will be allowed to expire. 

$$

MRC

What forecasters said that day

The local office's own words before this beach hazards statement 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 beach hazards statement went out at Aug 16, 4:07 PM CDT, 2 hours 19 minutes earlier. Its key messages:

  • Area of storms moving into south central WI is anticipated to stall over southern WI this evening. This would enhance our risk of flash flooding. Additional storms are possible overnight into Sunday morning. Flash Flood Watch in effect until 10 AM.
  • Multiple rounds of showers and thunderstorms are likely into early next week. Locally heavy rainfall is possible. There remains a lot of uncertainty with storm placement and timing over the next few days.
  • The rain over the next few days could lead to river rises again, with the potential for a few locations to return to at least minor flood stage.
  • Drying out and becoming less humid by mid to late next week.
Area forecast discussion, Aug 16, 4:07 PM CDT, 2 hours 19 minutes before
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
407 PM CDT Sat Aug 16 2025

.KEY MESSAGES...

- Area of storms moving into south central WI is anticipated to
  stall over southern WI this evening. This would enhance our
  risk of flash flooding. Additional storms are possible
  overnight into Sunday morning. Flash Flood Watch in effect
  until 10 AM.

- Multiple rounds of showers and thunderstorms are likely into
  early next week. Locally heavy rainfall is possible. There
  remains a lot of uncertainty with storm placement and timing
  over the next few days.

- The rain over the next few days could lead to river rises
  again, with the potential for a few locations to return to at
  least minor flood stage.

- Drying out and becoming less humid by mid to late next week.

&&

.SHORT TERM...
Issued 407 PM CDT Sat Aug 16 2025

Tonight and Sunday:

We are focused on our second round of convection moving into
south central WI now. These developed along some elevated warm
air advection and potentially assisted by a remnant MCV. Looking
at visible satellite, we can see a stationary boundary that is
over northern Iowa and stretches into southwest WI through
Grant and Iowa County. There are several outflow boundaries
associated with the ongoing convection, and they seem to be
meeting over Grant or Iowa county right now. This stationary
boundary probably translates eastward through Madison and
potentially West Bend. This line of storms moving into south
central WI is expected to become west-east oriented and slow
down as it starts to line up along that stationary boundary.
This seems like a glimpse of where our region of storms may
stall this evening.

The low level jet will ramp up this evening and point into this
stationary boundary. The lift from this feature is expected to
help regenerate showers and thunderstorms along the stalled
boundary. This is our region of concern for flash flooding.
There is still uncertainty in exactly where any flash flooding
will occur, as that type of convection is a very small scale
feature. However the current idea (and concern) is that it
would be within the I-94 corridor. However, if the boundary gets
shunted a bit from outflow, then I-90 and southwest, including
Madison, have a risk of that persistent convection overnight (a
third round).

While we are not trusting any convection allowing models due to
their poor track record lately, the 19Z HRRR and 18Z NAM Nest
develop storms late this evening along the boundary from
southern MN, northeast IA, and south central WI. This scenario
depicts what our thoughts are at this time. However, these
models want to race the line of storms into northern IL and I am
not sure how much I trust that idea.

Sunday weather continues to be uncertain. If a big complex of
storms diminishes right over southern WI late tonight, then it
will be a while before storms can re-develop. If the storms blow
through and we have a chance to get some sun on the northern
edge of the storm remnants over northeast portions of our
forecast area, then additional storm development would be
possible already Sunday morning.

Gusty northeast winds are expected to rush down Lake Michigan
Sunday morning and bring elevated waves to the nearshore and
beaches Sunday afternoon and evening. A Beach Hazards Statement
may be needed.

Cronce

&&

.LONG TERM...
Issued 407 PM CDT Sat Aug 16 2025

Monday through Saturday:

Another storm complex will be possible over central or southern
WI on Monday as a more robust shortwave trough tracks across
central MN. With a frontal boundary draped from west central WI
to southeast WI, we have will continue to be in a position for
another round of storms Monday afternoon into the evening. The
high precipitable water values of around 2 inches will continue
to sit over the area, the risk of heavy rain will continue. The
current flash flood watch may need to be extended or have a new
one issued.

It looks like high pressure will finally win over the Upper
Great Lakes area by Tuesday evening, which will end our chance
for storms. One caution to that idea is that a weak trough may
stall over the eastern Great Lakes and clip Lake Michigan (and
far southeast WI) with surprise showers and/or storms on
Wednesday. Thursday and Friday look quiet for southern WI.

Cronce

&&

.AVIATION...
Issued 407 PM CDT Sat Aug 16 2025

Another round of storms is pushing into south central WI late
this afternoon may produce severe winds. This line is expected
to stall over southern WI this evening.

MVFR ceilings are expected with areas of convection through late
evening, and then IFR ceilings become more likely for east
central and portions of southeast WI Sunday morning. Improvement
is expected through Sunday afternoon, although more storms are
possible.

Cronce

&&

.MARINE...
Issued 407 PM CDT Sat Aug 16 2025

The risk for thunderstorms will be in place along a stationary
boundary that is draped across central and southern WI through
at least Monday. Gusty winds are the main threat.

A period of gusty north-northeast winds in the wake of a cold
front dropping down Lake Michigan late tonight through Sunday
morning will produce high waves. A Small Craft Advisory will
likely be needed.

Cronce

&&

.HYDROLOGY...
Issued 407 PM CDT Fri Aug 15 2025

There is a flash flood risk this afternoon through Sunday
morning due to repeated rounds of heavy rain. A Flash Flood
Watch is in effect until 10 AM.

One Flood Warning and one Flood Watch remain in effect in the
Milwaukee metro area, in the wake of the heavy rainfall this
past weekend.

The Lower Fox River at Waukesha remains in minor flood stage at
this time, but will continue to decrease in stage height. It
may remain in flood stage until at least early Sunday morning.

The Fox River at New Munster may reach minor flood stage early
next week, and is being monitored with a Flood Watch.

Ponding of water in areas immediately near each river segment
will remain possible until each can fall below flood stage by
later this week. Continue to heed any road closures in all
impacted areas until river stages recede further and Flood
Warnings are allowed to expire.

There is potential for localized heavy rainfall again this
afternoon through Monday, and area rivers (particularly in the
Milwaukee metro area and surrounding counties) will be monitored
for potential rises.

Cronce

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...Flood Watch...WIZ046-WIZ047-WIZ051-WIZ052-WIZ056-WIZ057-WIZ058-
     WIZ059-WIZ060-WIZ062-WIZ063-WIZ064-WIZ065-WIZ066-WIZ067-
     WIZ068-WIZ069-WIZ070-WIZ071-WIZ072 until 10 AM Sunday.

LM...None.
&&

Visit us at weather.gov/milwaukee

Follow us on Facebook, X, and YouTube at:
www.facebook.com/NWSMilwaukee
www.x.com/NWSMilwaukee
www.youtube.com/NWSMilwaukee
Hazardous weather outlook, Aug 16, 3:17 PM CDT, 3 hours 9 minutes before
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
317 PM CDT Sat Aug 16 2025

WIZ046-047-051-052-056>060-062>072-172030-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
317 PM CDT Sat Aug 16 2025

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

.DAY ONE...Tonight

The Fox River in Waukesha will remain above flood stage.

There are chances for thunderstorms through tonight with the main
risk being gusty winds, hail, heavy rain and the possibility for
flash flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Saturday

The Fox River in Waukesha will remain above flood stage until at
least early Sunday morning.

There will be continued chances for thunderstorms through the
first half of next week. Locally heavy rainfall is possible,
particularly in locations experiencing repeated rounds of storms.

.SPOTTER INFORMATION STATEMENT...

CoCoRAHS rainfall reports will be appreciated through next week.

LMZ643>646-172030-
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-
317 PM CDT Sat Aug 16 2025

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

.DAY ONE...Tonight

There are chances for thunderstorms through the overnight hours.
Gusty winds are the main hazards.

.DAYS TWO THROUGH SEVEN...Sunday through Saturday

There will be continued chances for thunderstorms through the
first half of next week.

Gusty northeast winds in the wake of a front Sunday morning will
produce high waves through Sunday evening.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-172030-
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-
317 PM CDT Sat Aug 16 2025

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

.DAY ONE...Tonight

There are chances for thunderstorms into the overnight hours.
Gusty winds are the main hazards.

.DAYS TWO THROUGH SEVEN...Sunday through Saturday

There will be continued chances for thunderstorms through the
first half of next week.

A wind shift to the northeast will contain gusts up to 30 kt and
building waves in the wake of a cold front on Sunday.

MRC

www.weather.gov/mkx

In the hours before

Local storm report, Aug 16, 4:58 PM CDT, 1 hour 28 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
458 PM CDT Sat Aug 16 2025

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

0342 PM     Tstm Wnd Gst     4 SW Kingston           43.66N 89.20W
08/16/2025  E60 MPH          Green Lake         WI   Emergency Mngr

            Estimated 60 MPH winds and penny size hail
            in Dalton.

&&

Wood
Special weather statement, Aug 16, 4:59 PM CDT, 1 hour 27 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
459 PM CDT Sat Aug 16 2025

WIZ063>065-162245-
Waukesha WI-Jefferson WI-Dane WI-
459 PM CDT Sat Aug 16 2025

...STRONG THUNDERSTORMS WILL IMPACT WAUKESHA...EAST CENTRAL DANE AND
CENTRAL JEFFERSON COUNTIES THROUGH 545 PM CDT...

At 458 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Merton to near Dousman to near Cambridge.
Movement was east at 55 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Waukesha, New Berlin, Brookfield, Muskego, Pewaukee, Fort Atkinson,
Hartland, Jefferson, Mukwonago, Delafield, Elm Grove, Lake Mills,
Wales, Okauchee Lake, Wind Lake, Oconomowoc, Vernon, Cottage Grove,
Ottawa, and Johnson Creek.

This includes the following highways...
 Interstate 94 between mile markers 244 and 303.
 Wisconsin Highway 26 between mile markers 23 and 37.
 Interstate 43 between mile markers 43 and 59.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
south central and southeastern Wisconsin.

&&

LAT...LON 4284 8870 4294 8857 4296 8909 4312 8924
      4313 8873 4316 8858 4306 8807 4284 8807
TIME...MOT...LOC 2158Z 288DEG 48KT 4316 8837 4300 8853 4296 8904

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

HEEREN
Special weather statement, Aug 16, 5:17 PM CDT, 1 hour 9 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
517 PM CDT Sat Aug 16 2025

WIZ063-064-068>070-162245-
Green WI-Walworth WI-Rock WI-Jefferson WI-Dane WI-
517 PM CDT Sat Aug 16 2025

...STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN GREEN...WESTERN
WALWORTH...ROCK...SOUTHEASTERN DANE AND SOUTHERN JEFFERSON COUNTIES
THROUGH 545 PM CDT...

At 517 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Fort Atkinson to near Milton to near Albany.
Movement was southeast at 35 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated. Automated observation stations have
         reported winds up to 48 mph.

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

Locations impacted include...
Janesville, Beloit, Whitewater, Fort Atkinson, Elkhorn, Delavan,
South Beloit, Milton, Edgerton, Evansville, East Troy, Brodhead,
Clinton, Sharon, Darien, Orfordville, Brooklyn, Footville, Lake
Koshkonong, and Richmond.

This includes the following highways...
 U.S. Highway 12 between mile markers 320 and 322.
 Interstate 39/90 between mile markers 159 and 187.
 Wisconsin Highway 26 between mile markers 6 and 23.
 Interstate 43 between mile markers 0 and 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
south central and southeastern Wisconsin.

&&

LAT...LON 4250 8938 4285 8938 4289 8908 4296 8886
      4295 8857 4285 8864 4284 8836 4249 8866
TIME...MOT...LOC 2217Z 329DEG 32KT 4294 8885 4278 8900 4268 8936

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

HEEREN
Local storm report, Aug 16, 5:40 PM CDT, 46 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
540 PM CDT Sat Aug 16 2025

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

0528 PM     Tstm Wnd Dmg     Pardeeville             43.53N 89.30W
08/16/2025                   Columbia           WI   NWS Employee

            A few tree limbs down on campers at campsite
            near Pardeeville.

&&

Wood
Special weather statement, Aug 16, 5:40 PM CDT, 46 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
540 PM CDT Sat Aug 16 2025

WIZ064-065-069>072-162345-
Walworth WI-Rock WI-Waukesha WI-Racine WI-Jefferson WI-Kenosha WI-
540 PM CDT Sat Aug 16 2025

...STRONG THUNDERSTORMS WILL IMPACT WALWORTH...ROCK...RACINE...
SOUTHERN WAUKESHA...SOUTHEASTERN JEFFERSON AND KENOSHA COUNTIES
THROUGH 645 PM CDT...

At 539 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Mukwonago to near Clinton to near Brodhead.
Movement was southeast at 35 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated. Automated weather stations reporting winds
         around 40 mph.

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

Locations impacted include...
Kenosha, Racine, Janesville, Beloit, Mount Pleasant, Muskego,
Whitewater, Elkhorn, Delavan, Lake Geneva, Mukwonago, Sturtevant,
Milton, Union Grove, East Troy, Paddock Lake, Williams Bay, Camp
Lake, Wind Lake, and Twin Lakes.

This includes the following highways...
 U.S. Highway 12 between mile markers 320 and 338.
 Interstate 39/90 between mile markers 167 and 186.
 Wisconsin Highway 26 between mile markers 6 and 10.
 Interstate 43 between mile markers 0 and 48.
 Interstate 41/94 between mile markers 328 and 343.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
south central and southeastern Wisconsin.

&&

LAT...LON 4250 8937 4251 8936 4267 8937 4283 8886
      4292 8835 4276 8777 4264 8782 4250 8813
TIME...MOT...LOC 2239Z 300DEG 32KT 4286 8830 4261 8885 4259 8939

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

HEEREN
Local storm report, Aug 16, 5:44 PM CDT, 42 minutes before
Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
544 PM CDT Sat Aug 16 2025

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

0400 PM     Tstm Wnd Dmg     3 N Fox Lake            43.60N 88.92W
08/16/2025                   Dodge              WI   Public

            Large tree took out two other trees as it
            fell down on north shore of Fox Lake.

&&

Wood

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 9:04 PM CDTSpecial Weather StatementMKXMarquette41 min
Aug 15, 10:07 PM CDTSpecial Weather StatementMKXGreen Lake38 min
Aug 16, 11:21 AM CDTSpecial Weather StatementMKXGreen Lake, Marquette39 min
Aug 16, 11:38 AM CDTSevere Thunderstorm WarningMKXColumbia, Dodge, Fond du Lac, Green Lake, Marquette, Sheboygan52 min
Aug 16, 11:46 AM CDTSpecial Marine WarningMKX119 min
Aug 16, 12:00 PM CDTFlood WatchMKXColumbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more20 hr
Aug 16, 12:04 PM CDTSevere Thunderstorm WarningMKXColumbia, Dodge, Fond du Lac, Ozaukee, Sheboygan, Washington56 min
Aug 16, 12:42 PM CDTSevere Thunderstorm WarningMKXDane, Iowa, Sauk48 min
Aug 16, 12:57 PM CDTSpecial Weather StatementMKXSheboygan33 min
Aug 16, 1:12 PM CDTSevere Thunderstorm WarningMKXDane, Iowa48 min
Aug 16, 1:32 PM CDTSevere Thunderstorm WarningMKXDane13 min
Aug 16, 1:45 PM CDTSevere Thunderstorm WarningMKXDane, Green, Jefferson, Rock45 min
Aug 16, 1:59 PM CDTSevere Thunderstorm WarningMKXDane16 min
Aug 16, 2:13 PM CDTSevere Thunderstorm WarningMKXRock, Walworth47 min
Aug 16, 2:25 PM CDTSevere Thunderstorm WarningMKXGreen, Rock50 min
Aug 16, 2:53 PM CDTSevere Thunderstorm WarningMKXRock, Walworth52 min
Aug 16, 2:55 PM CDTSpecial Weather StatementMKXMarquette50 min
Aug 16, 3:02 PM CDTSevere Thunderstorm WarningMKXRock43 min
Aug 16, 3:14 PM CDTSevere Thunderstorm WarningMKXColumbia, Marquette, Sauk46 min
Aug 16, 3:23 PM CDTSpecial Weather StatementMKXGreen Lake, Marquette67 min
Aug 16, 3:33 PM CDTSpecial Weather StatementMKXSauk57 min
Aug 16, 3:38 PM CDTSpecial Weather StatementMKXColumbia, Fond du Lac37 min
Aug 16, 3:44 PM CDTSevere Thunderstorm WarningMKXColumbia, Dodge, Fond du Lac, Green Lake46 min
Aug 16, 4:03 PM CDTSevere Thunderstorm WarningMKXColumbia, Dane, Dodge, Fond du Lac, Ozaukee, Sheboygan and 1 more46 min
Aug 16, 4:25 PM CDTSevere Thunderstorm WarningMKXDane, Jefferson, Waukesha35 min
Aug 16, 4:34 PM CDTSpecial Weather StatementMKXDane41 min
Aug 16, 4:42 PM CDTSpecial Weather StatementMKXOzaukee, Washington33 min
Aug 16, 4:59 PM CDTSpecial Weather StatementMKXJefferson, Waukesha46 min
Aug 16, 5:17 PM CDTSpecial Weather StatementMKXRock, Walworth28 min
Aug 16, 5:40 PM CDTSpecial Weather StatementMKXRock, Walworth65 min
Aug 16, 5:49 PM CDTAreal Flood AdvisoryMKXRock116 min
Aug 16, 6:29 PM CDTSpecial Weather StatementMKXLafayette31 min
Aug 16, 6:31 PM CDTSmall Craft AdvisoryMKX47 hr

Nearby

Beach Hazards Statements in Wisconsin, 2025Every beach hazards statement in 2025

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.