840
FNUS73 KLOT 120926
FWSLOT

Spot Forecast for Henslow units...USFS
National Weather Service Chicago IL
326 AM CST Wed Nov 12 2025

Forecast is based on ignition time of 1000 CST on November 12.
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...
The main weather hazard today will be from gusty west winds up to
30 mph at times this afternoon. Otherwise, it is expected to be
sunny and with no precipitation. Min RHs are expected to drop down
into the low to mid 40 percent range and mixing heights at or
above 2000 feet. Temperatures are expected to drop back down to
freezing overnight. Winds are expected to become light overnight
and turn to the south tomorrow. Temperatures are expected to warm
tomorrow into the 50s.

.REST OF TODAY...

Sky/weather.........Sunny.
Temperature.........45 at ignition...Max 52.
RH..................61 percent at ignition...Min 45 percent.
Wind (20 ft)........Winds west at 16 mph at ignition...otherwise
                    West winds 13 to 16 mph decreasing to around 10
                    mph late in the afternoon. Gusts up to 28 mph.
Chance of pcpn......0 percent.
Transport winds.....West 22 to 26 mph decreasing to 15 to 18 mph
                    late in the afternoon.
Mixing height.......1900 ft AGL at ignition...otherwise 3500 ft
                    AGL.
Smoke dispersal.....Good /39600 knot-ft/ at ignition.
                    Max...excellent /78200 knot-ft/.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........8   7   6   6   5   4   8   12
Weather cov.....
Weather type....
Temp............45  48  50  51  52  52  50  47
RH..............61  54  49  46  45  46  49  55
20 FT wind dir..290 290 290 290 290 280 280 280
20 FT wind spd..16  17  17  17  16  15  14  12
20 FT wind gust.28  28  26  28  28  26  23  20
Mix hgt (kft)...1.9 2.4 2.9 3.2 3.5 2.5 1.3 0.7
Transp wind dir.290 290 290 290 290 280 280 280
Transp wind spd.23  25  26  25  25  22  18  15
Chc of pcpn (%).0   0   0   0   0   0   0   0
Vrate kt-ft/1K..40  52  66  71  78  48  21  9

.TONIGHT...

Sky/weather.........Partly cloudy.
Temperature.........Min 32.
RH..................Max 96 percent.
Wind (20 ft)........West winds 6 to 9 mph decreasing to around 5
                    mph early in the morning.
Chance of pcpn......0 percent.
Transport winds.....West 12 to 16 mph decreasing to 9 to 10 mph
                    after 3 am.
Mixing height.......400 ft AGL.
Smoke dispersal.....Poor (3100 knot-ft).

TIME (CST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........17  22  27  32  36  39  43  38  33  28  26  25
Weather cov.....
Weather type....
Temp............44  43  42  41  40  39  37  36  35  34  33  32
RH..............60  65  68  72  75  78  81  84  87  88  89  90
20 FT wind dir..270 270 280 280 280 280 280 280 280 280 280 270
20 FT wind spd..10  10  9   9   9   8   8   7   7   7   6   5
20 FT wind gust.16  15  14  14  14  13  12  10  9   9   8   7
Mix hgt (kft)...0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.270 270 280 280 280 280 280 280 280 280 280 270
Transp wind spd.16  16  15  16  15  14  14  13  12  12  10  9
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Vrate kt-ft/1K..7   6   6   7   6   5   5   5   4   4   4   3

.THURSDAY...

Sky/weather.........Increasing clouds.
Temperature.........Max 56.
RH..................Min 50 percent.
Wind (20 ft)........Light southwest winds around 5 mph.
Chance of pcpn......0 percent.
Transport winds.....Southwest 6 to 8 mph shifting to the south 7 to
                    9 mph late in the afternoon.
Mixing height.......1400 ft AGL.
Smoke dispersal.....Poor (1700 knot-ft).

TIME (CST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........23  18  20  40  32  40  48  53  57  62  59  57
Weather cov.....
Weather type....
Temp............32  33  37  42  47  50  53  55  56  55  53  50
RH..............94  96  88  77  67  60  55  51  50  51  55  61
20 FT wind dir..260 250 250 250 250 240 230 230 220 210 200 180
20 FT wind spd..3   3   3   3   3   5   6   6   6   5   5   5
20 FT wind gust.7   7   7   7   8   9   10  10  10  9   9   8
Mix hgt (kft)...0.4 0.3 0.3 0.5 0.8 1.1 1.4 1.3 1.2 1.2 0.9 0.6
Transp wind dir.260 250 250 250 250 240 230 230 220 210 200 180
Transp wind spd.8   8   6   6   7   8   8   8   7   7   7   9
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Vrate kt-ft/1K..3   2   2   3   5   8   10  9   8   7   6   5

$$
Forecaster...King
Requested by...Krystal Reddy
Type of request...PRESCRIBED
.TAG 2525588.0/LOT
.DELDT 11/12/25
.FormatterVersion 2.0.0