705
FNUS73 KLOT 041319
FWSLOT

Spot Forecast for Midewin Westside Fall RX...USFS
National Weather Service Chicago IL
719 AM CST Tue Nov 4 2025

Forecast is based on ignition time of 1000 CST on November 04.
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...
A broken to overcast mid level cloud deck will gradually clear
this afternoon. While a sprinkle can`t be completely ruled out,
dry conditions are expected to prevail. Mixing heights are
expected to be slow to increase through the morning because of the
cloud cover, but should eventually lift more quickly midday to
around 3000 feet. Southwest winds initially less than 10 mph this
morning will also gradually increase to 10 to 15 mph by midday,
with gusts around 20 mph this afternoon. Relative humidity values
are expected to fall to around 30 percent by noon, with minimum
values between 20 and 25 percent this afternoon.

Mostly sunny skies are expected for Wednesday. A cold front
crossing the area during the morning will shift winds from
southwest around daybreak to northwest with gusts near 30 mph by
early afternoon. Dew points will be falling through the afternoon
on Wednesday, with minimum RH values of 35 to 40 percent expected
and values under 35 percent possible.

.REST OF TODAY...

Sky/weather.........Partly cloudy then becoming mostly sunny.
Temperature.........55 at ignition...Max 64.
RH..................37 percent at ignition...Min 22 percent.
Wind (20 ft)........Winds south at 7 mph at ignition...otherwise
                    South winds 6 to 8 mph increasing to 10 to 12
                    mph in the afternoon.
Chance of pcpn......0 percent.
Transport winds.....South 9 to 13 mph increasing to 15 to 18 mph in
                    the afternoon.
Mixing height.......1000 ft AGL at ignition...otherwise 3100 ft
                    AGL.
Smoke dispersal.....Poor /7600 knot-ft/ at ignition. Max...good
                    /50300 knot-ft/.

TIME (CST)      4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
Sky (%).........65  60  55  48  41  34  25  16
Weather cov.....
Weather type....
Temp............55  59  62  63  63  64  62  59
RH..............37  29  24  22  23  26  32  42
20 FT wind dir..180 180 180 180 180 180 170 170
20 FT wind spd..7   9   12  13  13  13  13  12
20 FT wind gust.12  15  18  21  22  22  21  20
Mix hgt (kft)...1.0 1.8 2.9 3.0 3.1 2.8 1.2 0.7
Transp wind dir.180 180 180 180 180 180 170 170
Transp wind spd.9   13  15  17  18  18  16  15
Chc of pcpn (%).0   0   0   0   0   0   0   0
Vrate kt-ft/1K..8   20  38  45  50  45  16  10

.TONIGHT...

Sky/weather.........Mostly clear.
Temperature.........Min 52.
RH..................Max 87 percent.
Wind (20 ft)........South winds 10 to 13 mph with gusts to around
                    25 mph shifting to the southwest 12 to 15 mph
                    late in the evening.
Chance of pcpn......0 percent.
Transport winds.....South 16 to 21 mph shifting to the southwest 18
                    to 22 mph overnight.
Mixing height.......500 ft AGL.
Smoke dispersal.....Poor (7000 knot-ft).

TIME (CST)      12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P
Sky (%).........7   9   10  12  18  23  29  26  24  21  26  32
Weather cov.....
Weather type....
Temp............57  56  56  55  55  55  55  54  54  54  53  52
RH..............53  62  68  75  78  76  76  78  76  77  79  82
20 FT wind dir..170 170 180 180 190 200 200 210 220 230 230 240
20 FT wind spd..12  12  12  13  14  15  16  16  15  14  14  13
20 FT wind gust.18  20  22  24  25  26  26  26  25  24  23  22
Mix hgt (kft)...0.7 0.5 0.5 0.6 0.6 0.7 0.5 0.6 0.7 0.6 0.6 0.6
Transp wind dir.170 170 180 180 190 200 210 210 220 230 230 240
Transp wind spd.16  17  17  20  20  21  22  22  21  21  20  18
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Vrate kt-ft/1K..10  8   7   10  10  12  10  11  12  11  10  9

.WEDNESDAY...

Sky/weather.........Partly cloudy then becoming mostly sunny.
Temperature.........Max 62.
RH..................Min 39 percent.
Wind (20 ft)........West winds 12 to 15 mph shifting to the
                    northwest 16 to 18 mph with gusts to around 33
                    mph in the late morning and early afternoon,
                    then decreasing to around 13 mph late in the
                    afternoon decreasing to around 9 mph late in
                    the afternoon.
Chance of pcpn......0 percent.
Transport winds.....West 17 to 21 mph increasing to 24 to 28 mph
                    late in the morning, then shifting to the
                    northwest 26 to 31 mph late in the morning
                    decreasing to around 22 mph late in the
                    afternoon decreasing to around 16 mph.
Mixing height.......4000 ft AGL.
Smoke dispersal.....Poor (9200 knot-ft) early in the morning
                    increasing to excellent (98400 knot-ft) in the
                    afternoon.

TIME (CST)      MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
Sky (%).........37  34  32  29  27  24  22  19  16  13  10  8
Weather cov.....
Weather type....
Temp............52  52  55  59  61  62  62  61  61  59  57  54
RH..............85  87  83  74  61  52  47  42  39  39  42  49
20 FT wind dir..240 250 270 280 290 310 320 320 330 330 330 320
20 FT wind spd..13  14  15  17  18  20  20  20  18  17  14  10
20 FT wind gust.22  23  24  26  30  32  33  31  30  26  21  14
Mix hgt (kft)...0.6 0.8 1.4 1.9 2.6 3.1 3.6 3.4 3.7 4.0 2.8 1.6
Transp wind dir.240 250 270 280 290 310 320 320 330 330 330 320
Transp wind spd.17  17  21  24  28  30  31  30  29  26  22  16
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Vrate kt-ft/1K..9   11  25  41  62  79  98  89  92  92  53  23

$$
Forecaster...Ratzer
Requested by...Jesse Hoh
Type of request...PRESCRIBED
.TAG 2525050.0/LOT
.DELDT 11/04/25
.FormatterVersion 2.0.0