409
FNUS73 KPAH 061505
FWSPAH
SPOT FORECAST FOR PYRAMID RX...ILLINOIS DNR
NATIONAL WEATHER SERVICE PADUCAH KY
905 AM CST TUE JAN 6 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 CST ON JANUARY 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SURFACE WINDS TODAY WILL INCREASE TO AROUND 10-12MPH OUT OF THE
WEST THIS AFTERNOON, WHILE TRANSPORT WINDS INCREASE TO 15-20 MPH
MIDDAY. RHS DROP TO THEIR LOWEST VALUES THIS WEEK TODAY, AROUND
45-50% FOR A PM MINIMUM. DECENT MIXING IS EXPECTED FOR THE MIDDAY
TO AFTERNOON HOURS LEADING TO FAIR SMOKE DISPERSAL CONDITIONS.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........48 AT IGNITION...MAX 65.
RH..................93 PERCENT AT IGNITION...MIN 48 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WINDS SOUTHWEST AT 6 MPH AT
IGNITION...OTHERWISE WEST WINDS 7 TO 12 MPH
SHIFTING TO THE NORTHWEST AROUND 6 MPH LATE IN
THE AFTERNOON.
MIXING HEIGHT.......700 FT AGL AT IGNITION...OTHERWISE 2500 FT AGL.
TRANSPORT WINDS.....WEST 12 TO 20 MPH DECREASING TO AROUND 10 MPH
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR /8500 KNOT-FT/ AT IGNITION. MAX...FAIR
/41900 KNOT-FT/.
TIME (CST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......PC PC PC PC MCR MCR MCR MCR MCR MCR
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0
TEMP............48 51 55 58 61 62 63 65 62 59
RH..............93 85 78 70 59 54 51 49 52 57
20 FT WIND DIR..SW SW W W W W W W W NW
20 FT WIND SPD..6 8 9 12 12 10 10 10 8 7
20 FT WIND GUST.18 17 18 20 18 18 17 17 15 13
MIX HGT (KFT)...0.7 0.9 1.6 1.8 1.9 2.1 2.5 2.4 1.2 0.8
TRANSP WIND DIR.W W W W W W W W W W
TRANSP WIND SPD.14 14 18 18 17 17 20 17 12 10
VRATE KT-FT/1K..9 11 26 28 29 32 42 37 12 7
VENTRATE CAT....PR PR PR PR PR PR FR PR PR PR
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MIN 36.
RH..................MAX 100 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS AROUND 6 MPH EARLY IN THE
EVENING BECOMING LIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 13 MPH.
SMOKE DISPERSAL.....POOR (2000 KNOT-FT).
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......MCR MCR MCR MCR PC PC MC PC PC PC PC PC
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............56 52 50 48 47 44 42 41 40 39 38 38
RH..............60 70 76 81 81 84 91 91 92 96 96 96
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..6 6 6 6 5 3 3 2 2 2 2 1
20 FT WIND GUST.12 10 12 10 9 9 8 7 7 6 5 5
MIX HGT (KFT)...0.6 0.6 0.6 0.6 0.6 1.4 0.9 0.9 0.8 0.5 0.6 0.5
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW NW NW
TRANSP WIND SPD.12 13 12 12 10 12 12 12 10 8 6 5
VRATE KT-FT/1K..6 6 6 6 5 14 9 9 7 4 3 2
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MAX 57.
RH..................MIN 56 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTH AROUND 6 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......1600 FT AGL.
TRANSPORT WINDS.....WEST 2 TO 3 MPH, SHIFTING TO THE SOUTH AND
INCREASING TO AROUND 12 MPH LATE IN THE
AFTERNOON.
SMOKE DISPERSAL.....POOR (800 KNOT-FT).
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......PC PC PC PC PC PC PC PC PC PC MC MC
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............37 36 38 41 44 48 52 55 56 56 55 52
RH..............100 100 96 89 82 72 65 60 57 56 60 67
20 FT WIND DIR..NW NW SW S S S S S S S S S
20 FT WIND SPD..1 1 1 2 3 5 6 6 6 6 6 6
20 FT WIND GUST.3 3 3 5 7 8 10 12 12 12 12 10
MIX HGT (KFT)...0.5 0.4 0.4 0.4 0.7 0.9 1.2 1.4 1.6 1.5 1.2 0.8
TRANSP WIND DIR.NW W SW S S S S S S S S S
TRANSP WIND SPD.3 2 2 3 5 6 7 8 9 10 12 12
VRATE KT-FT/1K..1 1 1 1 3 5 7 10 13 14 12 8
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
FORECASTER...LESAGE
REQUESTED BY...DISTRICT HERITAGE BIOLOGIST
TYPE OF REQUEST...PRESCRIBED
.TAG 2528362.0/PAH
.DELDT 01/06/26
.FORMATTERVERSION 2.0.0
.EMAIL STEPHEN.TILLMAN@ILLINOIS.GOV
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