248
FNUS73 KLOT 062015
FWSLOT

Spot Forecast for RX SJF Carlson...Forest Preserve District of DuPage County
National Weather Service Chicago IL
215 PM CST Thu Nov 6 2025

Forecast is based on ignition time of 0900 CST on November 07.
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 period of rain is expected tonight, but will end
prior to daybreak on Friday. Aside from a small (~20%) chance for
a late afternoon and evening shower, the remainder of the day
will be dry. It will be another unseasonably warm day, albeit
quit breezy, with westerly winds gusting as high as 30 mph during
the afternoon. Colder weather, with additional precipitation
chances are expected for the weekend.

.FRIDAY...

Sky/weather.........Partly cloudy.
Temperature.........54 at ignition...Max 62.
RH..................72 percent at ignition...Min 47 percent.
Wind (20 ft)........Winds west at 15 mph at ignition...otherwise
                    West winds 13 to 16 mph with gusts to around 29
                    mph.
Chance of pcpn......10 percent.
Transport winds.....West 20 to 24 mph increasing to 22 to 26 mph
                    late in the afternoon, then decreasing to
                    around 18 mph late in the afternoon.
Mixing height.......1600 ft AGL at ignition...otherwise 5200 ft
                    AGL.
Smoke dispersal.....Fair /27500 knot-ft/ at ignition.
                    Max...excellent /114300 knot-ft/.

TIME (CST)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........42  32  23  13  18  23  28  38  49
Weather cov.....
Weather type....
Temp............54  56  59  61  62  62  62  60  57
RH..............72  65  57  52  48  47  48  51  56
20 FT wind dir..270 270 270 270 270 280 280 280 280
20 FT wind spd..15  16  16  17  17  18  17  16  14
20 FT wind gust.23  24  26  28  29  29  28  26  22
Mix hgt (kft)...1.6 2.2 3.0 3.8 4.4 4.8 5.2 3.9 2.5
Transp wind dir.260 260 260 260 260 260 260 270 280
Transp wind spd.20  21  23  24  26  26  25  22  18
Chc of pcpn (%).0   0   0   0   0   0   10  10  10
Vrate kt-ft/1K..28  39  61  80  101 112 114 74  40

.FRIDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy then
                    becoming mostly cloudy. Isolated rain showers
                    in the evening.
Temperature.........Min 39.
RH..................Max 90 percent.
Wind (20 ft)........Northwest winds 7 to 9 mph becoming light.
Chance of pcpn......20 percent.
Transport winds.....Northwest 12 to 17 mph decreasing to 8 to 10
                    mph overnight.
Mixing height.......1200 ft AGL.
Smoke dispersal.....Fair (21000 knot-ft) early in the evening
                    decreasing to poor (8400 knot-ft) late in the
                    night.

TIME (CST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........59  60  60  61  55  49  43  43  44  44  48  53
Weather cov.....ISO ISO ISO ISO ISO ISO
Weather type....RW  RW  RW  RW  RW  RW
Temp............56  53  51  50  49  47  45  44  42  41  40  39
RH..............59  64  71  74  75  78  82  84  86  87  89  90
20 FT wind dir..280 280 300 320 330 340 340 340 340 340 350 350
20 FT wind spd..10  10  9   9   8   7   6   6   5   5   5   5
20 FT wind gust.16  16  15  14  13  10  8   7   7   7   6   6
Mix hgt (kft)...1.2 1.3 1.3 1.4 1.4 1.3 1.3 1.3 1.4 1.4 1.3 1.3
Transp wind dir.280 290 300 310 310 320 320 320 330 330 330 340
Transp wind spd.15  15  16  17  16  14  12  10  10  9   8   8
Chc of pcpn (%).20  20  20  20  20  20  0   0   0   0   0   0
Vrate kt-ft/1K..16  17  19  21  19  16  14  13  12  12  10  8

.SATURDAY...

Sky/weather.........Mostly cloudy. Chance of rain early in the
                    afternoon. Rain late in the afternoon.
Temperature.........Max 49.
RH..................Min 66 percent.
Wind (20 ft)........Light winds becoming north 5 to 7 mph early in
                    the morning.
Chance of pcpn......80 percent.
Transport winds.....North 6 to 10 mph.
Mixing height.......3200 ft AGL.
Smoke dispersal.....Poor (7100 knot-ft) early in the morning
                    increasing to fair (17100 knot-ft) in the
                    afternoon.

TIME (CST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........58  63  69  75  78  82  86  88  90  92  93  96
Weather cov.....                        CHC CHC CHC DEF DEF DEF
Weather type....                        RN  RN  RN  RN  RN  RN
Temp............39  40  43  45  46  48  49  49  49  48  47  46
RH..............90  88  82  78  74  69  67  66  66  69  75  83
20 FT wind dir..000 000 000 000 000 010 010 010 020 020 020 030
20 FT wind spd..5   5   5   5   5   6   6   6   7   7   8   8
20 FT wind gust.6   6   6   7   7   7   8   8   9   10  12  13
Mix hgt (kft)...1.2 1.4 1.7 1.9 2.4 2.8 3.2 2.9 2.6 2.4 2.1 1.9
Transp wind dir.340 350 000 000 010 020 020 020 030 030 030 030
Transp wind spd.7   6   6   6   6   6   6   7   7   8   9   10
Chc of pcpn (%).10  10  10  10  10  10  30  30  30  80  80  80
Vrate kt-ft/1K..7   8   8   9   11  14  17  17  17  17  17  16

$$
Forecaster...Birk
Requested by...Adam Carlson
Type of request...PRESCRIBED
.TAG 2525341.0/LOT
.DELDT 11/06/25
.FormatterVersion 2.0.0