Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Central Illinois
Issued by NWS Central Illinois
111
FNUS53 KILX 180824
FWFILX
Fire Weather Planning Forecast for Central/Southeast Illinois
National Weather Service Lincoln IL
324 AM CDT Mon Aug 18 2025
.DISCUSSION...
The heat and humidity continue today, with afternoon heat indices
as high as 105 degrees. Winds will be light again, initially
southeasterly and gradually turning to southerly by midday. The
light winds will keep ventilation poor today. Isolated storms are
possible through mid-afternoon, then rain chances increase to
30-50% along and north of I-72/Danville from late afternoon into
tonight. Locally heavy rainfall is possible. Storm chances will
persist into Tuesday as a front moves across the region. Expect
variable wind directions on Tuesday, with a general trend of
shifting from south-southwesterly Tuesday morning to north-
northwesterly by Tuesday evening. For the extended forecast,
temperatures trend cooler by Wednesday, with precip chances below
20% Wednesday into the weekend.
ILZ027>031-036>038-182115-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-
Including the cities of Galesburg, Toulon, Peoria, Lacon, Eureka,
Canton, Pekin, Bloomington, and Normal
324 AM CDT Mon Aug 18 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 40 50 40
Chance of Thunder (%) 40 50 30
Temp (24h trend) 92 (+1) 71 (-1) 88
RH % (24h trend) 62 (+4) 99 (+2) 69
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) S 5 Lgt/Var Lgt/Var
Precip Amount 0.04 0.53 0.17
Precip Duration 1 2 2
Precip Begin 9 AM Continuing Continuing
Precip End Continuing Continuing 6 PM
Mixing Hgt(ft-agl) 4460 3230
1700ft Mixing Temp 86 85
Transport Wnd (mph) SW 12 N 8
Vent Rate (mph-ft) 53520 25840
Vent Rate Category Fair Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Lows in the upper 60s. Highs in the
lower 80s. Minimum RH 69 percent. North winds around 5 mph.
.THURSDAY...Mostly clear. Lows in the lower 60s. Highs in the
lower 80s. Minimum RH 61 percent. North winds around 5 mph.
.FRIDAY...Mostly clear. Lows in the lower 60s. Highs in the mid
80s. Minimum RH 59 percent. Light winds.
.SATURDAY...Mostly clear. Lows in the mid 60s. Highs in the lower
80s. Minimum RH 55 percent. Northwest winds around 5 mph.
.SUNDAY...Mostly clear. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 54 percent. Northwest winds around 5 mph.
$$
ILZ040>043-047>053-182115-
Schuyler-Mason-Logan-De Witt-Cass-Menard-Scott-Morgan-Sangamon-
Christian-Macon-
Including the cities of Rushville, Havana, Lincoln, Clinton,
Beardstown, Petersburg, Winchester, Jacksonville, Springfield,
Taylorville, and Decatur
324 AM CDT Mon Aug 18 2025
Today Tonight Tue
Cloud Cover Mclear Pcldy Pcldy
Precip Type None Tstms Tstms
Chance Precip (%) 0 30 40
Chance of Thunder (%) 0 30 20
Temp (24h trend) 92 (0) 71 (-2) 89
RH % (24h trend) 58 (+1) 98 (+2) 63
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) S 5 Lgt/Var Lgt/Var
Precip Amount 0.00 0.18 0.10
Precip Duration 2 2
Precip Begin 6 PM Continuing
Precip End Continuing Continuing
Mixing Hgt(ft-agl) 4530 3350
1700ft Mixing Temp 87 86
Transport Wnd (mph) SW 10 NW 8
Vent Rate (mph-ft) 45300 26800
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Lows around 70. Highs in the mid 80s.
Minimum RH 65 percent. North winds around 5 mph.
.THURSDAY...Mostly clear. Lows in the lower 60s. Highs in the
lower 80s. Minimum RH 59 percent. North winds around 5 mph.
.FRIDAY...Mostly clear. Lows in the lower 60s. Highs in the mid
80s. Minimum RH 56 percent. Light winds.
.SATURDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 52 percent. Northwest winds around 5 mph.
.SUNDAY...Mostly clear. Lows in the upper 50s. Highs in the upper
70s. Minimum RH 49 percent. Northwest winds around 5 mph.
$$
ILZ044>046-054>057-061-182115-
Piatt-Champaign-Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby-
Including the cities of Monticello, Champaign, Urbana, Danville,
Sullivan, Tuscola, Charleston, Mattoon, Paris, and Shelbyville
324 AM CDT Mon Aug 18 2025
Today Tonight Tue
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None Tstms Tstms
Chance Precip (%) 0 20 50
Chance of Thunder (%) 0 20 40
Temp (24h trend) 90 (-1) 71 (0) 90
RH % (24h trend) 63 (+6) 98 (0) 65
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.00 0.08 0.12
Precip Duration 2 2
Precip Begin 6 PM Continuing
Precip End Continuing Continuing
Mixing Hgt(ft-agl) 3970 3710
1700ft Mixing Temp 84 86
Transport Wnd (mph) SW 7 W 8
Vent Rate (mph-ft) 27790 29680
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. Lows around 70. Highs in the mid 80s.
Minimum RH 67 percent. North winds around 5 mph.
.THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 57 percent. North winds around 5 mph.
.FRIDAY...Mostly clear. Lows in the lower 60s. Highs in the mid
80s. Minimum RH 53 percent. Northeast winds around 5 mph.
.SATURDAY...Mostly clear. Lows in the lower 60s. Highs in the mid
80s. Minimum RH 51 percent. Northwest winds around 5 mph.
.SUNDAY...Mostly clear. Lows in the upper 50s. Highs around 80.
Minimum RH 46 percent. Northwest winds around 5 mph.
$$
ILZ062-063-066>068-071>073-182115-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Greenup, Marshall, Effingham, Newton,
Robinson, Flora, Olney, and Lawrenceville
324 AM CDT Mon Aug 18 2025
Today Tonight Tue
Cloud Cover Pcldy Mclear Pcldy
Precip Type None None Tstms
Chance Precip (%) 0 0 40
Chance of Thunder (%) 0 0 30
Temp (24h trend) 92 (+1) 72 (-1) 92
RH % (24h trend) 55 (-1) 96 (-2) 59
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.00 0.00 0.09
Precip Duration 2
Precip Begin 6 AM
Precip End Continuing
Mixing Hgt(ft-agl) 4130 3910
1700ft Mixing Temp 85 87
Transport Wnd (mph) SW 3 W 7
Vent Rate (mph-ft) 12390 27370
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY...Partly cloudy. A chance of showers and
thunderstorms. Lows in the lower 70s. Highs in the mid 80s.
Minimum RH 64 percent. North winds around 5 mph.
.THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 58 percent. North winds around 5 mph.
.FRIDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 52 percent. Northeast winds around 5 mph.
.SATURDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 52 percent. Light winds.
.SUNDAY...Mostly clear. Lows in the lower 60s. Highs in the lower
80s. Minimum RH 46 percent. North winds around 5 mph.
$$
Erwin