841
FNUS73 KPAH 112143
FWSPAH
SPOT FORECAST FOR PYRAMID RX...ILLINOIS DNR
NATIONAL WEATHER SERVICE PADUCAH KY
343 PM CST SUN JAN 11 2026
FORECAST IS BASED ON IGNITION TIME OF 0000 CST ON JANUARY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WINDS WILL BE OUT OF THE SOUTHWEST MONDAY, WITH MIXING
HEIGHTS STRUGGLING TO REACH ABOVE 2000 FEET. MINIMUM RH'S WILL DROP
TO AROUND 40%. SIMILAR CONDITIONS ARE EXPECTED TUESDAY.
REST OF TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........27 AT IGNITION...MIN 24.
RH..................74 PERCENT AT IGNITION...MAX 78 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WINDS SOUTHWEST AT 3 MPH AT
IGNITION...OTHERWISE LIGHT WINDS BECOMING
SOUTHWEST 5 TO 6 MPH AFTER 3 AM.
MIXING HEIGHT.......400 FT AGL AT IGNITION...OTHERWISE 400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 9 TO 14 MPH.
SMOKE DISPERSAL.....POOR /3100 KNOT-FT/ AT IGNITION. MIN...POOR
/3100 KNOT-FT/.
TIME (CST) MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......CLR CLR CLR CLR CLR CLR
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0
TEMP............27 25 26 26 25 26
RH..............74 78 74 78 78 74
20 FT WIND DIR..SW SW SW SW SW SW
20 FT WIND SPD..3 3 5 6 6 7
20 FT WIND GUST.8 9 10 12 13 14
MIX HGT (KFT)...0.4 0.4 0.4 0.4 0.4 0.5
TRANSP WIND DIR.SW SW SW S SW SW
TRANSP WIND SPD.9 10 12 14 14 14
VRATE KT-FT/1K..3 4 4 5 5 6
VENTRATE CAT....PR PR PR PR PR PR
MONDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MAX 51.
RH..................MIN 40 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 8 MPH.
MIXING HEIGHT.......2300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 18 MPH.
SMOKE DISPERSAL.....POOR (6000 KNOT-FT).
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......CLR CLR CLR CLR CLR MCR CLR MCR MCR MCR PC PC
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............26 27 30 34 38 42 46 49 50 51 49 47
RH..............78 71 66 58 52 46 45 40 42 42 48 49
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW S
20 FT WIND SPD..8 8 9 9 10 10 10 10 9 9 7 6
20 FT WIND GUST.15 15 15 16 17 16 16 15 15 14 13 13
MIX HGT (KFT)...0.5 0.5 0.6 0.9 1.3 1.5 1.9 2.2 2.2 2.3 1.0 0.6
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW S S
TRANSP WIND SPD.14 15 16 17 18 17 16 17 16 17 13 13
VRATE KT-FT/1K..6 7 9 13 20 23 27 32 31 35 11 7
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
MONDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MIN 35.
RH..................MAX 85 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 7 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 16 MPH.
SMOKE DISPERSAL.....POOR (4300 KNOT-FT).
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......PC PC MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............45 42 41 40 39 38 38 38 37 37 36 35
RH..............55 62 65 70 73 73 73 73 75 75 79 85
20 FT WIND DIR..SW SW SW SW SW SW SW SW S S S S
20 FT WIND SPD..6 6 6 6 6 6 6 6 7 7 8 8
20 FT WIND GUST.12 12 12 12 12 12 12 13 13 14 15 15
MIX HGT (KFT)...0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.S SW SW SW SW SW SW SW SW SW SW S
TRANSP WIND SPD.13 16 16 16 15 14 14 13 13 13 14 15
VRATE KT-FT/1K..5 7 7 6 6 5 5 5 4 4 5 5
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MAX 60.
RH..................MIN 42 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 7 TO 10 MPH.
MIXING HEIGHT.......2400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 16 TO 22 MPH.
SMOKE DISPERSAL.....POOR (6200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (45300 KNOT-FT) IN THE
AFTERNOON.
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MCR MCR MCR PC PC PC PC PC PC MC MC MC
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............35 37 39 42 47 52 56 58 60 60 59 57
RH..............85 82 76 70 60 52 47 45 42 42 44 45
20 FT WIND DIR..S S SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..9 9 10 10 12 13 13 13 13 12 10 10
20 FT WIND GUST.16 17 17 18 20 21 21 21 20 18 17 17
MIX HGT (KFT)...0.4 0.5 0.7 0.9 1.3 1.7 2.0 2.3 2.4 2.3 2.0 1.4
TRANSP WIND DIR.S SW SW SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.16 16 16 16 18 21 22 22 22 21 20 17
VRATE KT-FT/1K..6 8 10 13 20 29 38 44 45 42 33 22
VENTRATE CAT....PR PR PR PR PR PR PR FR FR FR PR PR
FORECASTER...TREVINO
REQUESTED BY...DISTRICT HERITAGE BIOLOGIST
TYPE OF REQUEST...PRESCRIBED
.TAG 2528785.0/PAH
.DELDT 01/11/26
.FORMATTERVERSION 2.0.0
.EMAIL STEPHEN.TILLMAN@ILLINOIS.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page