898
FZUS53 KLOT 151217
SRFLOT
SURF ZONE FORECAST FOR LAKE MICHIGAN BEACHES
NATIONAL WEATHER SERVICE CHICAGO IL
717 AM CDT TUE SEP 15 2026
ILZ006-160830-
LAKE-
INCLUDING THE BEACHES OF ILLINOIS BEACH STATE PARK
717 AM CDT TUE SEP 15 2026
TODAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET SUBSIDING TO 1 TO 3 FT.
WATER TEMPERATURE...........66-70.
WEATHER.....................MOSTLY CLOUDY. SHOWERS AND A CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN A
CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON.
HIGH TEMPERATURE............IN THE UPPER 70S.
WINDS.......................SOUTHWEST WINDS 15 TO 20 MPH, BECOMING
WEST AROUND 10 MPH LATE.
TONIGHT
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE
EVENING. A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT.
LOW TEMPERATURE.............IN THE MID 60S.
WINDS.......................NORTHWEST WINDS AROUND 10 MPH, BECOMING
NORTH AFTER MIDNIGHT.
WEDNESDAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF SHOWERS,
MAINLY IN THE MORNING.
HIGH TEMPERATURE............IN THE LOWER 70S.
WINDS.......................NORTHEAST WINDS 10 TO 15 MPH.
SWIM RISK OUTLOOK
WEDNESDAY NIGHT
MODERATE SWIM RISK*.
THURSDAY
LOW SWIM RISK*.
THURSDAY NIGHT
MODERATE SWIM RISK*.
FRIDAY
HIGH SWIM RISK*.
FRIDAY NIGHT
HIGH SWIM RISK*.
SATURDAY
HIGH 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
ILZ103-160830-
NORTHERN COOK-
717 AM CDT TUE SEP 15 2026
TODAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
WATER TEMPERATURE...........67-71.
WEATHER.....................MOSTLY CLOUDY. SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS IN THE MORNING,
THEN A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
HIGH TEMPERATURE............IN THE LOWER 80S.
WINDS.......................SOUTHWEST WINDS 15 TO 20 MPH, BECOMING
WEST AROUND 10 MPH LATE.
TONIGHT
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF
THUNDERSTORMS IN THE EVENING. A CHANCE
OF SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT.
LOW TEMPERATURE.............IN THE UPPER 60S.
WINDS.......................NORTH WINDS AROUND 10 MPH, BECOMING
NORTHEAST 10 TO 15 MPH LATE.
WEDNESDAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF SHOWERS.
HIGH TEMPERATURE............IN THE LOWER 70S.
WINDS.......................NORTHEAST WINDS 10 TO 15 MPH.
SWIM RISK OUTLOOK
WEDNESDAY NIGHT
MODERATE SWIM RISK*.
THURSDAY
LOW SWIM RISK*.
THURSDAY NIGHT
MODERATE SWIM RISK*.
FRIDAY
HIGH SWIM RISK*.
FRIDAY NIGHT
HIGH SWIM RISK*.
SATURDAY
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
ILZ104-160830-
CENTRAL COOK-
INCLUDING THE BEACHES OF CHICAGO PARK DISTRICT
717 AM CDT TUE SEP 15 2026
..BEACH HAZARDS STATEMENT IN EFFECT UNTIL 7 AM CDT THIS MORNING
TODAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.
WATER TEMPERATURE...........67-71.
WEATHER.....................MOSTLY CLOUDY. SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS IN THE MORNING,
THEN A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
HIGH TEMPERATURE............IN THE LOWER 80S.
WINDS.......................SOUTHWEST WINDS 15 TO 20 MPH, BECOMING
WEST AROUND 10 MPH LATE.
TONIGHT
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF
THUNDERSTORMS IN THE EVENING. A CHANCE
OF SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT.
LOW TEMPERATURE.............IN THE UPPER 60S.
WINDS.......................NORTH WINDS AROUND 10 MPH, BECOMING
NORTHEAST 10 TO 15 MPH LATE.
WEDNESDAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF SHOWERS.
HIGH TEMPERATURE............IN THE LOWER 70S.
WINDS.......................NORTHEAST WINDS 10 TO 15 MPH.
SWIM RISK OUTLOOK
WEDNESDAY NIGHT
MODERATE SWIM RISK*.
THURSDAY
LOW SWIM RISK*.
THURSDAY NIGHT
MODERATE SWIM RISK*.
FRIDAY
HIGH SWIM RISK*.
FRIDAY NIGHT
HIGH SWIM RISK*.
SATURDAY
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
INZ001-160830-
LAKE-
INCLUDING THE BEACHES OF INDIANA DUNES NATIONAL PARK
717 AM CDT TUE SEP 15 2026
TODAY
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WATER TEMPERATURE...........64-68.
WEATHER.....................MOSTLY CLOUDY, THEN BECOMING PARTLY
CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS.
HIGH TEMPERATURE............IN THE LOWER 80S.
WINDS.......................SOUTHWEST WINDS 10 TO 15 MPH, BECOMING
AROUND 10 MPH LATE.
TONIGHT
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................1 TO 3 FEET BUILDING TO 2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF
THUNDERSTORMS IN THE EVENING. SHOWERS
LIKELY. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT.
LOW TEMPERATURE.............IN THE UPPER 60S.
WINDS.......................NORTH WINDS 5 TO 10 MPH, BECOMING
NORTHEAST LATE.
WEDNESDAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. A SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE MORNING. A
CHANCE OF SHOWERS. A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
HIGH TEMPERATURE............IN THE MID 70S.
WINDS.......................NORTHEAST WINDS 5 TO 10 MPH.
SWIM RISK OUTLOOK
WEDNESDAY NIGHT
LOW SWIM RISK*.
THURSDAY
LOW SWIM RISK*.
THURSDAY NIGHT
MODERATE SWIM RISK*.
FRIDAY
MODERATE SWIM RISK*.
FRIDAY NIGHT
LOW SWIM RISK*.
SATURDAY
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
INZ002-160830-
PORTER-
INCLUDING THE BEACHES OF INDIANA DUNES NATIONAL PARK
717 AM CDT TUE SEP 15 2026
TODAY
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WATER TEMPERATURE...........64-68.
WEATHER.....................MOSTLY CLOUDY, THEN BECOMING PARTLY
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.......................SOUTHWEST WINDS 15 TO 20 MPH,
DIMINISHING TO AROUND 10 MPH IN THE
AFTERNOON.
TONIGHT
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF
THUNDERSTORMS IN THE EVENING. SHOWERS
LIKELY. A SLIGHT CHANCE OF
THUNDERSTORMS AFTER MIDNIGHT.
LOW TEMPERATURE.............IN THE UPPER 60S.
WINDS.......................NORTH WINDS AROUND 10 MPH, BECOMING
NORTHEAST LATE.
WEDNESDAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET.
WEATHER.....................MOSTLY CLOUDY. SHOWERS LIKELY AND A
SLIGHT CHANCE OF THUNDERSTORMS EARLY IN
THE MORNING, THEN A CHANCE OF SHOWERS
IN THE LATE MORNING AND AFTERNOON. A
SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
HIGH TEMPERATURE............IN THE MID 70S.
WINDS.......................NORTHEAST WINDS 5 TO 10 MPH.
SWIM RISK OUTLOOK
WEDNESDAY NIGHT
LOW SWIM RISK*.
THURSDAY
LOW SWIM RISK*.
THURSDAY NIGHT
LOW SWIM RISK*.
FRIDAY
LOW SWIM RISK*.
FRIDAY NIGHT
LOW SWIM RISK*.
SATURDAY
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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page