Suppression Forecast
Issued by NWS Chicago, IL

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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