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FZUS53 KLOT 171536
SRFLOT

Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
1036 AM CDT Sun Aug 17 2025

ILZ006-172115-
Lake-
Including the beaches of Illinois Beach State Park
1036 AM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...

.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Water Temperature...........70-74.
Weather.....................Mostly cloudy.
High Temperature............In the upper 70s.
Winds.......................Northeast winds around 10 mph with
                            gusts up to 20 mph.

.TONIGHT...
Swim Risk*..................High.
Wave Height.................4 to 6 feet.
Weather.....................Partly cloudy, then becoming mostly
                            cloudy.
Low Temperature.............In the lower 70s.
Winds.......................Northeast winds around 10 mph, becoming
                            east after midnight.

.MONDAY...
Swim Risk*..................High.
Wave Height.................4 to 6 feet.
Weather.....................Partly cloudy. A chance of showers and
                            thunderstorms.
High Temperature............In the mid 80s.
Winds.......................Southeast winds 10 to 15 mph.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...Moderate swim risk*.

&&

Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot

$$

ILZ103-104-172115-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
1036 AM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...

.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Water Temperature...........72-76.
Weather.....................Mostly cloudy.
High Temperature............In the upper 70s.
Winds.......................Northeast winds 5 to 10 mph.

.TONIGHT...
Swim Risk*..................High.
Wave Height.................4 to 6 feet.
Weather.....................Partly cloudy, then becoming mostly
                            cloudy.
Low Temperature.............In the lower 70s.
Winds.......................Northeast winds around 10 mph, becoming
                            east after midnight.

.MONDAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Weather.....................Partly cloudy. A chance of showers
                            and thunderstorms.
High Temperature............In the upper 80s.
Winds.......................Southeast winds 10 to 15 mph.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...Moderate swim risk*.

&&

Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot

$$

INZ001-172115-
Lake-
Including the beaches of Indiana Dunes National Park
1036 AM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...

.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................2 to 4 feet building to 3 to 5 feet.
Water Temperature...........74-78.
Weather.....................Mostly cloudy.
High Temperature............In the upper 70s.
Winds.......................North winds 5 to 10 mph.

.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Weather.....................Partly cloudy, then becoming mostly
                            cloudy.
Low Temperature.............Around 70.
Winds.......................Northeast winds 5 to 10 mph, becoming
                            east after midnight.

.MONDAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Weather.....................Mostly sunny. A slight chance of
                            showers and thunderstorms.
High Temperature............In the upper 80s.
Winds.......................Southeast winds 5 to 10 mph.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...Moderate swim risk*.

&&

Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot

$$

INZ002-172115-
Porter-
Including the beaches of Indiana Dunes National Park
1036 AM CDT Sun Aug 17 2025

...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...

.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................2 to 4 feet building to 3 to 5 feet.
Water Temperature...........74-78.
Weather.....................Mostly cloudy.
High Temperature............In the upper 70s.
Winds.......................North winds 5 to 10 mph.

.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Weather.....................Partly cloudy, then becoming mostly
                            cloudy.
Low Temperature.............In the upper 60s.
Winds.......................Northeast winds 5 to 10 mph, becoming
                            east 10 to 15 mph after midnight.

.MONDAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Weather.....................Mostly sunny. A slight chance of
                            showers and thunderstorms in the
                            afternoon.
High Temperature............In the upper 80s.
Winds.......................Southeast winds 5 to 10 mph.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...Moderate swim risk*.

&&

Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot


$$