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FNUS73 KLOT 301605
FWSLOT

Spot Forecast for Rx TIR Carlson...Forest Preserve District of DuPage County
National Weather Service Chicago IL
1005 AM CST Thu Jan 30 2025

Forecast is based on ignition time of 1100 CST on January 30.
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...

Cloudy and mild conditions are expected through this afternoon
with temperatures forecast to warm into the low to mid 50s this
afternoon. Relative humidity values will be around 50 percent at
ignition and dip into the lower 40 percent range briefly this
afternoon. Showers could begin as early as 4 to 5 PM CST today at
the burn site but are more likely after 6 PM. Occasional periods
of rain and drizzle are then expected overnight with steady rain
expected Friday morning before gradually ending in the afternoon.

.REST OF TODAY...

Sky/weather.........Cloudy. Chance of rain showers late in the
                    afternoon.
Temperature.........47 at ignition...Max 55.
RH..................50 percent at ignition...Min 43 percent.
Wind (20 ft)........Winds south at 14 mph at ignition...otherwise
                    Southwest winds 12 to 15 mph becoming south 8
                    to 10 mph late in the afternoon.
Chance of pcpn......30 percent.
Transport winds.....Southwest 17 to 22 mph becoming south around 12
                    mph late in the afternoon.
Mixing height.......1200 ft AGL at ignition...otherwise 1600 ft
                    AGL.
Smoke dispersal.....Fair /23800 knot-ft/ at ignition. Max...good
                    /30300 knot-ft/.

TIME (CST)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........77  89  92  96  100 100 100
Weather cov.....                    SCH CHC
Weather type....                    RW  RW
Temp............47  52  54  55  55  52  48
RH..............50  45  43  43  45  52  63
20 FT wind dir..200 210 210 210 210 200 200
20 FT wind spd..14  16  15  15  13  12  9
20 FT wind gust.23  26  25  25  22  18  14
Mix hgt (kft)...1.2 1.4 1.6 1.6 1.5 1.2 0.7
Transp wind dir.200 210 210 210 210 210 200
Transp wind spd.22  21  22  20  18  17  12
Chc of pcpn (%).0   0   0   0   10  20  30
Vrate kt-ft/1K..24  27  30  27  23  18  7

.TONIGHT...

Sky/weather.........Cloudy. Rain showers likely in the evening,
                    then occasional rain showers overnight.
Temperature.........Min 38.
RH..................Max 100 percent.
Wind (20 ft)........South winds 5 to 7 mph shifting to the east
                    overnight, then shifting to the northeast
                    around 9 mph early in the morning.
Chance of pcpn......80 percent.
Transport winds.....South 8 to 13 mph shifting to the east 6 to 9
                    mph overnight, then shifting to the northeast
                    12 to 13 mph after 3 am.
Mixing height.......300 ft AGL.
Smoke dispersal.....Poor (1600 knot-ft).

TIME (CST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........100 100 100 100 100 100 100 100 100 100 100 100
Weather cov.....LKY LKY LKY CHC CHC LKY LKY LKY LKY LKY OCL OCL
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Temp............46  44  42  42  42  41  40  41  40  40  40  40
RH..............73  82  93  96  96  100 100 100 100 100 100 96
20 FT wind dir..190 190 190 190 180 150 100 080 070 070 060 060
20 FT wind spd..8   7   7   6   5   5   5   5   6   8   8   10
20 FT wind gust.                                            12
Mix hgt (kft)...0.7 0.6 0.5 0.5 0.4 0.4 0.3 0.3 0.3 0.4 0.5 0.6
Transp wind dir.190 190 190 190 180 150 100 080 070 060 060 060
Transp wind spd.13  13  10  10  9   8   6   6   7   9   12  13
Chc of pcpn (%).60  60  60  50  50  60  60  70  70  70  80  80
Vrate kt-ft/1K..8   6   5   4   4   3   2   2   2   3   5   6

.FRIDAY...

Sky/weather.........Mostly cloudy then becoming partly cloudy. Rain
                    and slight chance of thunderstorms in the
                    morning, then rain showers likely in the
                    afternoon.
Temperature.........Max 40.
RH..................Min 89 percent.
Wind (20 ft)........Northeast winds 9 to 12 mph shifting to the
                    north 10 to 13 mph in the afternoon. Gusty and
                    erratic winds expected near thunderstorms early
                    in the morning.
Chance of pcpn......90 percent.
Transport winds.....Northeast 12 to 16 mph shifting to the north 18
                    to 20 mph in the afternoon.
Mixing height.......1500 ft AGL.
Smoke dispersal.....Poor (4900 knot-ft) early in the morning
                    increasing to fair (24000 knot-ft) in the
                    afternoon.

TIME (CST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........100 100 100 100 100 96  92  85  77  70  60  50
Weather cov.....DEF DEF DEF DEF DEF DEF LKY LKY LKY CHC CHC CHC
Weather type....RN  RN  RN  RN  RN  RN  RW  RW  RW  RW  RW  RW
Temp............39  39  39  39  39  39  39  39  38  38  37  37
RH..............100 100 100 100 100 100 100 96  96  89  89  89
20 FT wind dir..060 050 030 030 020 020 020 020 020 020 010 010
20 FT wind spd..10  12  12  13  13  13  13  14  14  14  13  12
20 FT wind gust.12  13  14  15  21  21  21  21  21  22  20  18
Mix hgt (kft)...0.6 0.5 0.5 0.8 0.9 1.1 1.2 1.3 1.4 1.5 1.4 1.4
Transp wind dir.060 050 030 030 020 020 020 020 020 020 010 010
Transp wind spd.14  14  12  13  14  15  16  18  20  20  20  20
Chc of pcpn (%).90  90  90  90  90  90  60  60  60  30  30  30
Vrate kt-ft/1K..7   6   5   9   11  14  17  21  23  24  24  24

$$
Forecaster...Petr
Requested by...Adam Carlson
Type of request...PRESCRIBED
.TAG 2501884.0/LOT
.DELDT 01/30/25
.FormatterVersion 2.0.0