888
FNUS73 KILX 151430
FWSILX
SPOT FORECAST FOR IDNR HQ...IDNR
NATIONAL WEATHER SERVICE LINCOLN IL
930 AM CDT TUE APR 15 2025
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE AT (217) 732-3089 IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
BREEZY NORTHWEST WINDS WILL GUST FROM 25 TO 35 MPH TODAY OVER
CENTRAL AND SOUTHEAST IL, WITH A FEW GUSTS TO 40 MPH. DRY WEATHER
WILL PREVAIL TONIGHT THROUGH WEDNESDAY WITH WINDS DIMINISHING THIS
EVENING VARIABLE WINDS LESS THAN 10 MPH ON WEDNESDAY. MINIMUM RELATIVE
HUMIDITY LEVELS OF 30 TO 40 PERCENT TODAY AND AROUND 30 PERCENT ON
WEDNESDAY. EXCELLENT VENT RATES WILL PREVAIL TODAY WITH FAIR VENT
RATES ON WEDNESDAY WITH MUCH LIGHTER WINDS AND LOWER MIXING
HEIGHTS.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........50 AT IGNITION...MAX 59.
RH..................56 PERCENT AT IGNITION...MIN 33 PERCENT.
WIND (20 FT)........WINDS NORTHWEST AT 21 MPH AT
IGNITION...OTHERWISE NORTHWEST WINDS 14 TO 16
MPH WITH GUSTS TO AROUND 35 MPH.
MIXING HEIGHT.......4500 FT AGL AT IGNITION...OTHERWISE 6900 FT
AGL.
TRANSPORT WINDS.....NORTHWEST 29 TO 33 MPH.
SMOKE DISPERSAL.....VERY GOOD /130200 KNOT-FT/ AT IGNITION.
MAX...EXCELLENT /180200 KNOT-FT/.
TIME (CDT) 10 AM NOON 2 PM 4 PM
SKY (%).........44 30 17 7
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............50 52 56 57
RH..............56 44 37 35
20 FT WIND......NW 21 NW 21 NW 21 NW 20
20 FT WIND GUST.35 33 33 32
MIX HGT (FT)....4500 5100 6200 6900
TRANSPORT WIND..NW 33 NW 29 NW 29 NW 29
VRATE KT-FT/1K..130 127 156 173
VENTRATE CAT....VYGD VYGD EXNT EXNT
TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT). AREAS OF FROST EARLY IN
THE MORNING.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........MIN 36.
RH..................MAX 79 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 13 MPH IN THE EVENING AND
OVERNIGHT BECOMING LIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 17 TO 26 MPH DECREASING TO 7 TO 14
MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....VERY GOOD (147300 KNOT-FT) DECREASING TO POOR
(2000 KNOT-FT).
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........7 6 3 2 2 3
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0
TEMP............57 51 46 42 40 38
RH..............33 42 55 65 67 73
20 FT WIND......NW 16 NW 16 NW 8 W 6 W 6 W 5
20 FT WIND GUST.25 25 18 14 14 9
MIX HGT (FT)....6400 700 500 400 400 400
TRANSPORT WIND..NW 26 NW 17 NW 13 W 10 NW 9 NW 8
VRATE KT-FT/1K..147 11 6 4 3 3
VENTRATE CAT....VYGD POOR POOR POOR POOR POOR
WEDNESDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT). AREAS OF FROST EARLY IN
THE MORNING.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
TEMPERATURE.........MAX 66.
RH..................MIN 30 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 6 MPH LATE IN
THE AFTERNOON.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 7 MPH SHIFTING TO THE NORTH
AROUND 5 MPH EARLY IN THE MORNING, THEN
SHIFTING TO THE EAST AROUND 6 MPH LATE IN THE
MORNING SHIFTING TO THE SOUTHWEST 6 TO 8 MPH
LATE IN THE MORNING INCREASING TO 9 TO 10 MPH.
SMOKE DISPERSAL.....POOR (1500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (45100 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........2 4 9 17 24 30
WEATHER COV.....AREAS
WEATHER TYPE....FROST NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0
TEMP............36 41 52 59 63 66
RH..............79 67 46 36 31 30
20 FT WIND......NW 2 NW 2 SE 3 SW 5 SW 5 S 7
20 FT WIND GUST.5 5 7 9 9 10
MIX HGT (FT)....300 700 2200 3800 4700 5000
TRANSPORT WIND..NW 7 N 5 S 6 W 9 W 9 SW 10
VRATE KT-FT/1K..2 3 11 30 39 45
VENTRATE CAT....POOR POOR POOR POOR POOR FAIR
FORECASTER...25
REQUESTED BY...RAY GEROFF
TYPE OF REQUEST...PRESCRIBED
.TAG 2510421.0/ILX
.DELDT 04/15/25
.FORMATTERVERSION 2.0.0
.EMAIL RAY.GEROFF@ILLINOIS.GOV
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