101
FZUS53 KLOT 200804
SRFLOT

Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
304 AM CDT Wed Aug 20 2025

ILZ006-202200-
Lake-
Including the beaches of Illinois Beach State Park
304 AM CDT Wed Aug 20 2025

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

.TODAY...
Swim Risk*..................High.
Wave Height.................Building to 3 to 5 feet.
Water Temperature...........71-75.
Weather.....................Increasing cloudiness.
High Temperature............In the lower 70s.
Winds.......................Northwest winds 10 to 15 mph this morning
                            becoming north 15 to 20 mph by noon, and
                            then northeast around 20 mph by this evening.
.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 6 feet.
Weather.....................Mostly clear.
Low Temperature.............In the upper 60s.
Winds.......................Northeast winds around 20 mph.

.THURSDAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 2 to 4 feet in the
                            afternoon.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Northeast winds around 10 mph.

.SWIM RISK OUTLOOK...
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...Low swim risk*.
.FRIDAY NIGHT...Low swim risk*.
.SATURDAY...Low swim risk*.
.SATURDAY NIGHT...Low swim risk*.
.SUNDAY...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

$$

ILZ103-104-202200-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
304 AM CDT Wed Aug 20 2025

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

.TODAY...
Swim Risk*..................High.
Wave Height.................Building to 3 to 6 feet.
Water Temperature...........71-75.
Weather.....................Mostly cloudy.
High Temperature............In the lower 70s.
Winds.......................Northwest winds 10 to 15 mph this morning
                            becoming north 15 to 20 mph by noon, and
                            then northeast around 20 mph by this evening.

.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 6 feet.
Weather.....................Mostly clear.
Low Temperature.............In the upper 60s.
Winds.......................Northeast winds around 20 mph.

.THURSDAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 2 to 4 feet in the
                            afternoon.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Northeast winds 10 to 15 mph.

.SWIM RISK OUTLOOK...
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...Low swim risk*.
.FRIDAY NIGHT...Low swim risk*.
.SATURDAY...Low swim risk*.
.SATURDAY NIGHT...Low swim risk*.
.SUNDAY...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

$$

INZ001-202200-
Lake-
Including the beaches of Indiana Dunes National Park
304 AM CDT Wed Aug 20 2025

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

.TODAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Water Temperature...........74-78.
Weather.....................Mostly cloudy.
High Temperature............In the lower 70s.
Winds.......................North winds 15 to 20 mph.

.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 6 feet.
Weather.....................Mostly clear.
Low Temperature.............In the upper 60s.
Winds.......................Northeast winds 15 to 20 mph, becoming
                            east 10 to 15 mph late.

.THURSDAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 2 to 4 feet in the
                            afternoon.
Weather.....................Partly cloudy, then becoming mostly
                            sunny.
High Temperature............In the mid 70s.
Winds.......................Northeast winds 10 to 15 mph.

.SWIM RISK OUTLOOK...
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...Low swim risk*.
.FRIDAY NIGHT...Low swim risk*.
.SATURDAY...Low swim risk*.
.SATURDAY NIGHT...Low swim risk*.
.SUNDAY...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

$$

INZ002-202200-
Porter-
Including the beaches of Indiana Dunes National Park
304 AM CDT Wed Aug 20 2025

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

.TODAY...
Swim Risk*..................High.
Wave Height.................3 to 6 feet.
Water Temperature...........74-78.
Weather.....................Mostly cloudy.
High Temperature............In the lower 70s.
Winds.......................North winds around 15 mph.

.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 6 feet.
Weather.....................Mostly clear.
Low Temperature.............In the mid 60s.
Winds.......................Northeast winds 15 to 20 mph, becoming
                            east 10 to 15 mph after midnight.

.THURSDAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 2 to 4 feet in the
                            afternoon.
Weather.....................Partly cloudy, then becoming mostly
                            sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 10 to 15 mph, becoming
                            north late.

.SWIM RISK OUTLOOK...
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...Low swim risk*.
.FRIDAY NIGHT...Low swim risk*.
.SATURDAY...Low swim risk*.
.SATURDAY NIGHT...Moderate swim risk*.
.SUNDAY...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


$$