403
FNUS73 KLOT 271335
FWSLOT
SPOT FORECAST FOR BROWN CIRCLE...USFS
NATIONAL WEATHER SERVICE CHICAGO IL
735 AM CST FRI FEB 27 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 CST ON FEBRUARY 27.
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
DENSE FOG WILL VERY GRADUALLY ERODE THROUGH MID MORNING WITH SKIES
BECOMING MOSTLY SUNNY.
DRY, WINDY, AND MUCH WARMER CONDITIONS ARE EXPECTED TODAY WITH
TEMPERATURES REACHING THE LOW TO MID 60S. STRONG SOUTHWEST WINDS
WILL GUST 30 TO 35 MPH, HIGHEST LATE IN THE AFTERNOON. THE
COMBINATION OF WARM AND WINDY WEATHER CONDITIONS AS WELL AS DRY
FUELS WILL LIKELY LEAD TO A HEIGHTENED THREAT OF GRASS AND BRUSH
FIRE SPREAD, WITH MINIMUM AFTERNOON RELATIVE HUMIDITY IN THE 25 TO
35 PERCENT RANGE EXPECTED. THERE IS SOME POTENTIAL FOR AFTERNOON
MIXING TO BE A BIT DEEPER THAN CURRENTLY FORECASTED, WHICH COULD
RESULT IN STRONGER GUSTS PEAKING NEAR 40 MPH AND EVEN LOWER RH
VALUES DROPPING TOWARD 20 PERCENT BETWEEN 3 AND 5 PM CST.
TOMORROW WILL BE MARKED BY INCREASING CLOUDINESS WITH A SLIGHT
CHANCE (AROUND 20 PERCENT) OF SNOW SHOWERS IN THE AFTERNOON. WINDS
WILL BE NORTH TO NORTHEASTERLY AT AROUND 10 MPH TOMORROW.
REST OF TODAY
SKY/WEATHER.........AREAS OF DENSE FOG THIS MORNING. THEN,
BECOMING MOSTLY SUNNY.
TEMPERATURE.........41 AT IGNITION...MAX 64.
RH..................62 PERCENT AT IGNITION...MIN 25 PERCENT.
WIND (20 FT)........SOUTHWEST AT 10 MPH AT IGNITION, INCREASING
TO 17 TO 20 MPH WITH GUSTS TO AROUND 35 MPH
EARLY IN THE AFTERNOON.
CHANCE OF PCPN......0 PERCENT.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO 20 TO 25
MPH LATE IN THE MORNING, THEN INCREASING TO 25
TO 35 MPH IN THE AFTERNOON.
MIXING HEIGHT.......800 FT AGL AT IGNITION...OTHERWISE 6000 FT AGL.
SMOKE DISPERSAL.....POOR /8100 KNOT-FT/ AT IGNITION.
MAX...EXCELLENT /78600 KNOT-FT/ INCREASING TO
EXCELLENT (112400 KNOT-FT) LATE IN THE
AFTERNOON.
TIME (CST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........25 19 14 8 10 11 12 17 21
WEATHER COV.....PTY
WEATHER TYPE....FOG
TEMP............41 47 53 57 61 63 64 64 61
RH..............62 51 42 38 33 29 26 25 29
20 FT WIND DIR..210 220 220 220 220 220 220 230 240
20 FT WIND SPD..10 14 16 18 21 22 23 23 17
20 FT WIND GUST.21 24 26 30 32 36 38 39 35
MIX HGT (KFT)...0.8 1.4 2.0 2.6 3.7 4.9 6.0 4.7 1.8
TRANSP WIND DIR.210 220 220 220 220 220 220 230 240
TRANSP WIND SPD.12 16 20 24 24 26 31 30 23
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0
VRATE KT-FT/1K..8 19 34 55 79 112 163 122 37
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN 29.
RH..................MAX 80 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 15 MPH BECOMING NORTHWEST 10 TO
15 MPH.
CHANCE OF PCPN......0 PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH SHIFTING TO THE NORTHWEST 15
TO 20 MPH IN THE LATE EVENING.
MIXING HEIGHT.......500 FT AGL.
SMOKE DISPERSAL.....FAIR (15300 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (6300 KNOT-FT) LATE IN THE
NIGHT.
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........26 22 18 14 16 16 24 27 17 26 38 42
WEATHER COV.....
WEATHER TYPE....
TEMP............59 56 52 49 47 44 42 39 37 35 33 32
RH..............34 42 53 58 62 66 70 73 75 76 80 79
20 FT WIND DIR..240 270 290 290 300 320 320 330 330 340 340 000
20 FT WIND SPD..17 16 14 12 12 12 10 10 9 8 7 7
20 FT WIND GUST.26 24 22 20 20 18 17 16 14 13 13 12
MIX HGT (KFT)...0.8 0.7 0.6 0.5 0.7 0.9 1.1 1.2 1.3 1.4 1.1 0.9
TRANSP WIND DIR.240 270 290 290 300 320 320 330 330 340 340 000
TRANSP WIND SPD.21 22 22 20 18 16 15 13 13 12 8 8
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
VRATE KT-FT/1K..15 14 12 9 12 13 15 14 14 14 8 6
SATURDAY
SKY/WEATHER.........INCREASING CLOUDINESS WITH A SLIGHT
CHANCE OF SNOW IN THE AFTERNOON.
TEMPERATURE.........MAX 41.
RH..................MIN 48 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH INCREASING TO AROUND
10 MPH LATE IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH INCREASING TO 15 TO 20
MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......2800 FT AGL.
SMOKE DISPERSAL.....POOR (5300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (30000 KNOT-FT) IN THE
AFTERNOON.
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........48 43 59 74 76 79 81 83 85 87 85 82
WEATHER COV..... SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... SN SN SN SN SN SN
TEMP............31 30 33 37 39 40 40 41 40 39 37 34
RH..............76 76 65 53 49 48 49 49 50 53 59 66
20 FT WIND DIR..010 010 010 020 020 030 040 040 040 040 040 030
20 FT WIND SPD..6 7 7 6 7 8 9 9 10 12 12 12
20 FT WIND GUST.13 13 14 15 15 16 17 18 20 20 20 18
MIX HGT (KFT)...0.7 0.9 1.3 1.5 1.8 2.1 2.4 2.8 2.6 2.3 2.1 1.9
TRANSP WIND DIR.010 010 010 020 020 030 040 040 040 040 040 030
TRANSP WIND SPD.9 9 9 9 7 9 12 9 12 15 16 17
CHC OF PCPN (%).10 10 10 10 10 10 20 20 20 20 20 20
VRATE KT-FT/1K..5 8 10 12 12 17 23 22 25 30 30 29
FORECASTER...BORCHARDT
REQUESTED BY...JAKE REED
TYPE OF REQUEST...PRESCRIBED
.TAG 2604162.1/LOT
.DELDT 02/26/26
.FORMATTERVERSION 2.0.0
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