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FZUS53 KLOT 181600
SRFLOT

Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
1100 AM CDT Mon Aug 18 2025

ILZ006-182130-
Lake-
Including the beaches of Illinois Beach State Park
1100 AM CDT Mon Aug 18 2025

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

.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 1 to 3 feet late.
Water Temperature...........70-74.
Weather.....................Mostly cloudy. A chance of showers and
                            thunderstorms late in the morning, then
                            isolated showers and thunderstorms
                            early in the afternoon. Scattered
                            showers and thunderstorms late.
High Temperature............In the lower 80s.
Winds.......................Southeast winds 10 to 15 mph with gusts
                            up to 25 mph.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Mostly cloudy. Numerous showers and
                            thunderstorms early in the evening,
                            then a chance of showers and
                            thunderstorms in the late evening and
                            overnight.
Low Temperature.............In the lower 70s.
Winds.......................South winds 5 to 10 mph, becoming
                            southwest late.

.TUESDAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly cloudy. A chance of
                            thunderstorms in the morning. A chance
                            of showers. A slight chance of
                            thunderstorms in the afternoon.
High Temperature............In the lower 80s.
Winds.......................West winds 5 to 10 mph, becoming north
                            in the afternoon.

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

$$

ILZ103-104-182130-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
1100 AM CDT Mon Aug 18 2025

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

.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 1 to 3 feet late.
Water Temperature...........71-75.
Weather.....................Mostly cloudy, then becoming partly
                            cloudy. A chance of showers and
                            thunderstorms late in the morning, then
                            isolated showers and thunderstorms
                            early in the afternoon. Numerous
                            showers and thunderstorms late.
High Temperature............In the mid 80s.
Winds.......................Southeast winds 10 to 15 mph.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Mostly cloudy. Numerous showers and
                            thunderstorms early in the evening,
                            then a chance of showers and
                            thunderstorms in the late evening and
                            overnight.
Low Temperature.............In the lower 70s.
Winds.......................South winds 5 to 10 mph.

.TUESDAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly cloudy. A chance of showers and
                            thunderstorms, mainly in the morning.
High Temperature............In the mid 80s.
Winds.......................Southwest winds around 10 mph, becoming
                            north late.

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

$$

INZ001-182130-
Lake-
Including the beaches of Indiana Dunes National Park
1100 AM CDT Mon Aug 18 2025

.REST OF TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Water Temperature...........75-79.
Weather.....................Mostly cloudy, then becoming partly
                            cloudy. A chance of showers and
                            thunderstorms late in the morning, then
                            isolated showers and thunderstorms
                            early in the afternoon. Scattered
                            showers and thunderstorms late.
High Temperature............In the upper 80s.
Winds.......................Southeast winds 5 to 10 mph.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
Weather.....................Mostly cloudy. Numerous showers and
                            thunderstorms, mainly in the evening.
Low Temperature.............In the lower 70s.
Winds.......................South winds 5 to 10 mph.

.TUESDAY...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
Weather.....................Mostly cloudy. A chance of showers and
                            thunderstorms until late afternoon,
                            then a slight chance of showers and
                            thunderstorms late.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 5 to 10 mph, becoming
                            north late.

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

$$

INZ002-182130-
Porter-
Including the beaches of Indiana Dunes National Park
1100 AM CDT Mon Aug 18 2025

.REST OF TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Water Temperature...........75-79.
Weather.....................Partly cloudy. A chance of showers and
                            thunderstorms late in the morning, then
                            isolated showers and thunderstorms
                            early in the afternoon. Scattered
                            showers and thunderstorms late.
High Temperature............In the mid 80s.
Winds.......................Southeast winds 5 to 10 mph.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
Weather.....................Mostly cloudy. Numerous showers and
                            thunderstorms, mainly in the evening.
Low Temperature.............In the lower 70s.
Winds.......................South winds 5 to 10 mph.

.TUESDAY...
Swim Risk*..................Low.
Wave Height.................1 foot or less.
Weather.....................Mostly cloudy. A chance of showers and
                            thunderstorms.
High Temperature............In the lower 80s.
Winds.......................Southwest winds around 10 mph, becoming
                            north late.

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


$$