040
FNUS73 KLOT 251204
FWSLOT
SPOT FORECAST FOR RX FBW CARLSON...FOREST PRESERVE DISTRICT OF DUPAGE COUNTY
NATIONAL WEATHER SERVICE CHICAGO IL
704 AM CDT WED MAR 25 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MARCH 25.
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
STRONGER SOUTHERLY WINDS AND MORE SUNSHINE THIS AFTERNOON SHOULD
HELP PUSH HIGH TEMPERATURES TO AROUND 70. MID TO UPPER-LEVEL
CLOUDS WILL PERIODICALLY FILTER OVERHEAD TODAY, LEADING TO
VARIABLE CLOUD COVER. MODEST MIXING THIS AFTERNOON IS EXPECTED TO
LOWER RH VALUES TO AROUND 25 PERCENT OR SLIGHTLY LOWER. SOUTHWEST
WINDS WILL ALSO GUST OVER 25 MPH THIS AFTERNOON, WITH SPORADIC
GUSTS POSSIBLY OVER 30 MPH LATE THIS AFTERNOON.
ISOLATED TO SCATTERED THUNDERSTORMS DEVELOPING OVER CENTRAL
ILLINOIS THIS EVENING MAY BRUSH THIS LOCATION LATE EVENING AND
OVERNIGHT.
THURSDAY WILL BE UNSEASONABLY WARM WITH HIGHS IN THE UPPER 70S.
HOWEVER, A POWERFUL COLD FRONT WILL SHIFT SOUTH ACROSS THE AREA
SOMETIME MID TO LATE AFTERNOON AND QUICKLY LOWER TEMPERATURES BY
20 TO 30 DEGREES IN A LITTLE AS ONE HOUR. GUSTY SOUTHWEST WINDS
ARE EXPECTED AHEAD THE FRONT, SHIFTING TO GUSTY NORTH WINDS
BEHIND THE FRONT. THUNDERSTORMS MAY DEVELOP ALONG THE FRONT AND
IN THE VICINITY OF THIS LOCATION BEFORE SHIFTING SOUTH OF THE AREA
SHORTLY THEREAFTER.
REST OF TODAY
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY.
TEMPERATURE.........49 AT IGNITION...MAX 70.
RH..................50 PERCENT AT IGNITION...MIN 23 PERCENT.
WIND (20 FT)........WINDS SOUTH AT 13 MPH AT IGNITION...OTHERWISE
SOUTHWEST WINDS 12 TO 15 MPH WITH GUSTS TO
AROUND 28 MPH.
CHANCE OF PCPN......0 PERCENT.
TRANSPORT WINDS.....SOUTH 17 TO 22 MPH SHIFTING TO THE SOUTHWEST 24
TO 26 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......1200 FT AGL AT IGNITION...OTHERWISE 4000 FT
AGL.
SMOKE DISPERSAL.....FAIR /17200 KNOT-FT/ AT IGNITION.
MAX...EXCELLENT /91700 KNOT-FT/.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........48 64 60 56 39 39 33 31
WEATHER COV.....
WEATHER TYPE....
TEMP............49 53 58 62 66 69 70 70
RH..............50 43 37 31 27 24 23 25
20 FT WIND DIR..190 200 200 200 200 210 210 210
20 FT WIND SPD..13 14 15 16 16 17 16 15
20 FT WIND GUST.22 23 25 26 26 28 26 25
MIX HGT (KFT)...1.2 1.4 1.9 2.5 3.4 3.9 4.0 3.5
TRANSP WIND DIR.190 200 200 200 200 210 210 210
TRANSP WIND SPD.17 18 20 22 24 25 26 25
CHC OF PCPN (%).0 0 0 0 0 0 0 0
VRATE KT-FT/1K..17 23 32 47 71 87 92 76
TONIGHT
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING
AND OVERNIGHT.
TEMPERATURE.........MIN 55.
RH..................MAX 92 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 9 TO 12 MPH DECREASING TO 6 TO
8 MPH IN THE LATE EVENING AND OVERNIGHT. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
IN THE EVENING AND OVERNIGHT.
CHANCE OF PCPN......20 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH DECREASING TO 12 TO 13
MPH OVERNIGHT.
MIXING HEIGHT.......400 FT AGL.
SMOKE DISPERSAL.....FAIR (28200 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (4200 KNOT-FT) LATE IN THE
NIGHT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........31 37 58 60 67 74 73 68 58 51 35 31
WEATHER COV..... SCH SCH SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW
TEMP............69 65 62 60 59 58 58 58 57 57 56 56
RH..............29 38 49 57 63 67 72 75 78 81 83 85
20 FT WIND DIR..210 210 210 210 210 210 210 210 210 200 200 200
20 FT WIND SPD..13 10 10 9 9 8 8 7 7 7 7 6
20 FT WIND GUST.21 12 10
MIX HGT (KFT)...1.7 0.9 0.9 0.7 0.7 0.6 0.6 0.5 0.5 0.5 0.5 0.4
TRANSP WIND DIR.210 210 210 210 210 210 210 210 210 200 200 200
TRANSP WIND SPD.20 15 16 17 17 16 12 13 12 12 13 12
CHC OF PCPN (%).0 20 20 20 20 20 20 20 20 20 10 10
VRATE KT-FT/1K..28 12 12 11 10 9 6 6 5 5 5 4
THURSDAY
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS
LIKELY IN THE AFTERNOON.
TEMPERATURE.........MAX 78.
RH..................MIN 50 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 9 MPH INCREASING TO 10 TO
14 MPH LATE IN THE MORNING AND EARLY AFTERNOON,
THEN SHIFTING TO THE NORTH 16 TO 20 MPH LATE IN
THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS IN THE AFTERNOON.
CHANCE OF PCPN......70 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 12 TO 14 MPH SHIFTING TO THE WEST 16
TO 20 MPH EARLY IN THE AFTERNOON, THEN SHIFTING
TO THE NORTH 18 TO 24 MPH LATE.
MIXING HEIGHT.......2000 FT AGL.
SMOKE DISPERSAL.....POOR (3600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (34100 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........28 30 32 41 52 48 52 69 77 85 92 93
WEATHER COV..... LKY LKY LKY LKY LKY
WEATHER TYPE.... RW RW RW RW RW
TEMP............55 55 58 61 65 68 73 75 78 74 55 49
RH..............87 92 85 79 73 71 61 56 50 57 96 100
20 FT WIND DIR..200 200 210 220 220 230 240 250 280 350 020 020
20 FT WIND SPD..6 6 9 10 12 13 14 15 16 17 18 20
20 FT WIND GUST. 10 13 15 21 23 25 26 28 29 30
MIX HGT (KFT)...0.4 0.4 0.4 0.8 1.0 1.3 1.7 2.0 1.9 1.6 1.4 1.3
TRANSP WIND DIR.200 200 210 220 220 230 240 250 280 330 020 020
TRANSP WIND SPD.12 12 12 14 14 14 20 20 16 18 22 24
CHC OF PCPN (%).10 10 10 10 10 10 10 70 70 70 70 70
VRATE KT-FT/1K..4 4 4 9 12 16 29 34 27 25 26 29
FORECASTER...KLUBER
REQUESTED BY...ADAM CARLSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2607758.0/LOT
.DELDT 03/25/26
.FORMATTERVERSION 2.0.0
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