024
FNUS73 KLOT 231339
FWSLOT
SPOT FORECAST FOR MIDEWIN RX 3/23...USFS
NATIONAL WEATHER SERVICE CHICAGO IL
839 AM CDT MON MAR 23 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON MARCH 23.
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
HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY. BREEZY NORTH TO
NORTH-NORTHEASTERLY WINDS, OCCASIONALLY GUSTING AROUND 20 MPH
THIS MORNING, WILL GRADUALLY DIMINISH THIS AFTERNOON. A LAKE
BREEZE IS EXPECTED TO PUSH ACROSS THE BURN SITE, SOMETIME AROUND 5
TO 7 PM WHICH WILL RESULT IN AN EASTERLY WIND SHIFT AND POSSIBLY
SOME BRIEF ADDITIONAL GUSTINESS BEFORE WINDS EASE AND TURN
SOUTHEASTERLY THROUGH THE EVENING. SOME FAIR WEATHER CUMULUS CLOUD
COVER MAY DEVELOP LATER THIS MORNING AND AFTERNOON AS MIXING
HEIGHTS INCREASE.
RELATIVE HUMIDITY VALUES WILL RECOVER QUICKLY THIS EVENING AND
TONIGHT. MINIMUM RH VALUES ON TUESDAY AFTERNOON ARE CURRENTLY
FORECAST TO FALL BACK INTO THE LOWER 30S WITH SOUTHERLY WINDS.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........33 AT IGNITION...MAX 45.
RH..................67 PERCENT AT IGNITION...MIN 37 PERCENT.
WIND (20 FT)........WINDS NORTH AT 12 MPH AT IGNITION...OTHERWISE
NORTH WINDS 9 TO 12 MPH DECREASING TO AROUND 10
MPH LATE IN THE AFTERNOON AND SHIFTING OUT OF THE
EAST AFTER 5 PM.
CHANCE OF PCPN......0 PERCENT.
TRANSPORT WINDS.....NORTH 15 TO 20 MPH DECREASING TO AROUND 15 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......2700 FT AGL AT IGNITION...OTHERWISE 4700 FT
AGL.
SMOKE DISPERSAL.....GOOD /47000 KNOT-FT/ AT IGNITION.
MAX...EXCELLENT /63400 KNOT-FT/.
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........27 20 12 11 8 6 4 4 4
WEATHER COV.....
WEATHER TYPE....
TEMP............33 35 37 40 41 43 45 45 44
RH..............67 61 55 50 46 42 39 37 38
20 FT WIND DIR..000 000 000 000 000 000 000 000 010
20 FT WIND SPD..12 13 12 12 10 10 9 9 8
20 FT WIND GUST.18 20 18 18 15 15 14 14 12
MIX HGT (KFT)...2.7 3.0 3.3 3.7 4.1 4.5 4.6 4.7 4.4
TRANSP WIND DIR.000 000 000 000 000 000 000 000 010
TRANSP WIND SPD.20 18 18 17 15 16 15 15 12
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0
VRATE KT-FT/1K..47 47 52 56 54 63 61 60 45
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
TEMPERATURE.........MIN 29.
RH..................MAX 72 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 10 MPH SHIFTING TO THE
SOUTHEAST 5 TO 10 MPH IN THE LATE EVENING AND
OVERNIGHT, THEN BECOMING LIGHT.
CHANCE OF PCPN......0 PERCENT.
TRANSPORT WINDS.....EAST 10 TO 13 MPH SHIFTING TO THE SOUTH AROUND 10
MPH OVERNIGHT.
MIXING HEIGHT.......UNDER 500 FT AGL.
SMOKE DISPERSAL.....FAIR (28700 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (4300 KNOT-FT) LATE IN THE
NIGHT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........8 14 19 32 41 39 48 60 64 67 70 64
WEATHER COV.....
WEATHER TYPE....
TEMP............43 39 36 34 32 32 31 31 30 30 30 30
RH..............41 50 57 61 66 65 66 67 68 69 70 69
20 FT WIND DIR..040 080 090 100 100 110 120 120 130 160 170 170
20 FT WIND SPD..7 8 7 7 6 6 6 6 5 3 3 3
20 FT WIND GUST.9
MIX HGT (KFT)...3.4 0.7 0.7 0.6 0.5 0.5 0.5 0.6 0.6 0.7 0.6 0.6
TRANSP WIND DIR.040 080 090 100 100 110 120 120 130 160 170 170
TRANSP WIND SPD.10 12 13 13 12 12 10 12 10 8 8 9
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
VRATE KT-FT/1K..29 7 8 6 5 5 5 6 5 5 4 5
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
TEMPERATURE.........MAX 54.
RH..................MIN 34 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 8 MPH.
CHANCE OF PCPN......0 PERCENT.
TRANSPORT WINDS.....SOUTH 9 TO 14 MPH DECREASING TO 7 TO 10 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......2800 FT AGL.
SMOKE DISPERSAL.....POOR (4800 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (23800 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........49 34 30 47 63 62 60 59 59 60 60 55
WEATHER COV.....
WEATHER TYPE....
TEMP............30 29 32 35 39 43 46 49 52 53 54 53
RH..............70 72 64 59 54 49 44 40 37 35 34 36
20 FT WIND DIR..160 160 160 170 170 170 180 180 180 180 180 170
20 FT WIND SPD..5 5 6 7 8 8 9 9 8 8 8 7
20 FT WIND GUST. 13 14 14 14 14 14 14 13 12
MIX HGT (KFT)...0.6 0.6 1.0 1.2 1.5 1.8 2.1 2.3 2.5 2.7 2.8 2.1
TRANSP WIND DIR.160 160 160 170 170 170 180 180 180 180 180 170
TRANSP WIND SPD.9 10 14 14 16 15 13 12 10 9 8 7
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
VRATE KT-FT/1K..5 5 11 15 21 24 24 23 22 21 20 13
FORECASTER...CARLAW
REQUESTED BY...STROHMEYER
TYPE OF REQUEST...PRESCRIBED
.TAG 2607281.0/LOT
.DELDT 03/23/26
.FORMATTERVERSION 2.0.0
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