860  
FNUS73 KLOT 192318  
FWSLOT  
 
SPOT FORECAST FOR WEST BEACH...INDIANA DUNES NATIONAL PARK  
NATIONAL WEATHER SERVICE CHICAGO IL  
618 PM CDT THU JUN 19 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 1800 CDT ON JUNE 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (815) 834-0666 IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION  
 
THERE IS A SLIGHT CHANCE (20 PERCENT OR LESS) OF A SHOWER THROUGH  
EARLY EVENING. AN OUTFLOW BOUNDARY IS CURRENTLY PUSHING SOUTHWARD  
DOWN THE LAKE AND BASED ON ITS CURRENT MOTION, MAY ARRIVE AT THE  
INCIDENT LOCATION BETWEEN 8 AND 9 PM CDT. WINDS MAY SWITCH OUT OF  
THE NORTH TO NORTHWEST AND COULD GUST TO AROUND 25 MPH AS THIS  
BOUNDARY PASSES, BUT WILL RETURN OUT OF THE SOUTHWEST LATE THIS  
EVENING AND SETTLE INTO THE 5 TO 15 MPH RANGE. THERE IS A CHANCE  
FOR SHOWER AND THUNDERSTORMS IN THE VICINITY DURING THE MID  
MORNING AND EARLY AFTERNOON ON FRIDAY.  
   
TONIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLEAR. SLIGHT  
CHANCE OF SHOWERS EARLY IN THE EVENING.  
TEMPERATURE.........75 AT FORECAST START...MIN 66.  
SURFACE WINDS (MPH).SOUTH WINDS AROUND 5 MPH SHIFTING TO THE 6  
TO 7 MPH IN THE LATE EVENING AND OVERNIGHT.  
WINDS MAY BRIEFLY SHIFT OUT OF THE NORTH/NORTHWEST  
AROUND 8-9 PM WITH A BRIEF PERIOD OF GUSTS OF OVER  
20 MPH.  
WAVE HEIGHT.........2 TO 3 FEET SUBSIDING TO 1 TO 2 FEET OVERNIGHT.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........49 44 40 23 7 7 7 11 15 18 19 19  
WEATHER COV..... SCH SCH SCH  
WEATHER TYPE.... RW RW RW  
TEMP............74 74 73 72 71 70 69 68 68 67 66 66  
SURFACE WND DIR.W W NW N SW SW SW SW SW SW SW SW  
SURFACE WND SPD.5 5 10 10 6 7 7 7 7 7 7 7  
SURFACE WND GST.7 7 20 20 7 8 9 10 12 10 12 12  
WAVE HEIGHT (FT)2 2 3 3 2 2 1 1 1 1 1 1  
   
FRIDAY  
 
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY. ISOLATED SHOWERS IN THE LATE  
MORNING AND EARLY AFTERNOON.  
TEMPERATURE.........MAX 82.  
SURFACE WINDS (MPH).SOUTHWEST WINDS 7 TO 9 MPH INCREASING TO SOUTH  
14 TO 16 MPH.  
WAVE HEIGHT.........1 TO 2 FEET.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........20 22 39 61 58 72 79 79 65 55 39 37  
WEATHER COV..... ISO ISO ISO ISO ISO ISO  
WEATHER TYPE.... RW RW RW RW RW RW  
TEMP............66 69 72 75 77 78 78 77 79 80 82 81  
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW SW S S  
SURFACE WND SPD.7 8 8 9 12 10 12 13 14 15 16 16  
SURFACE WND GST.12 14 15 16 17 15 15 16 21 21 22 21  
WAVE HEIGHT (FT)1 1 1 1 1 1 1 1 1 1 1 1  
   
FRIDAY NIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR.  
TEMPERATURE.........MIN 72.  
SURFACE WINDS (MPH).SOUTH WINDS 14 TO 15 MPH DECREASING TO 12 TO 14  
MPH IN THE LATE EVENING AND OVERNIGHT, THEN  
INCREASING TO AROUND 15 MPH AFTER 3 AM.  
WAVE HEIGHT.........1 TO 2 FEET.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........19 17 18 12 15 16 15 20 22 22 22 24  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............80 80 78 76 75 75 74 73 73 72 72 72  
SURFACE WND DIR.S S S S S S S S S S S S  
SURFACE WND SPD.15 14 14 12 12 13 13 14 14 15 15 15  
SURFACE WND GST.22 20 17 17 17 18 20 21 21 21 21 21  
WAVE HEIGHT (FT)1 1 1 1 1 1 1 1 1 1 1 1  
   
SATURDAY  
 
SKY/WEATHER.........MOSTLY SUNNY.  
TEMPERATURE.........MAX 92.  
SURFACE WINDS (MPH).SOUTH WINDS AROUND 16 MPH DECREASING TO 12 TO  
14 MPH EARLY IN THE MORNING, THEN INCREASING TO  
SOUTHWEST 15 TO 20 MPH WITH GUSTS TO AROUND 32  
MPH IN THE LATE MORNING AND AFTERNOON.  
WAVE HEIGHT.........1 TO 3 FEET.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........28 29 25 22 18 14 11 7 7 6 6 5  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............73 74 77 80 83 86 88 89 90 91 91 91  
SURFACE WND DIR.S S S S SW SW SW SW SW SW SW SW  
SURFACE WND SPD.16 12 14 15 16 17 17 17 18 20 20 20  
SURFACE WND GST.22 20 23 25 28 29 30 30 31 32 32 32  
WAVE HEIGHT (FT)2 2 2 2 2 2 2 2 2 2 2 2  
 
 
FORECASTER...CARLAW  
REQUESTED BY...M FRASE  
TYPE OF REQUEST...SAR  
.TAG 2516274.0/LOT  
.DELDT 06/19/25  
.FORMATTERVERSION 2.0.0  
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