Suppression Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
923
FNUS73 KLOT 221252
FWSLOT
Spot Forecast for Miller 3 and 5 Rx...NPS
National Weather Service Chicago IL
752 AM CDT Tue Apr 22 2025
Forecast is based on ignition time of 1100 CDT on April 22.
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...
Dry conditions are expected through the morning hours. An area of
showers with some embedded thunderstorms over far eastern Iowa as
of 8 AM is expected to slowly decay with eastward extent across
northern Illinois this morning. Isolated showers may persist to
the burn site early in the afternoon, though most activity should
have dissipated by this time. A second area of scattered showers
with possibly a thunderstorm is expected to develop over southeast
Iowa early this afternoon and track over the burn site toward
sunset into mid-evening. These showers could produce wind gusts
over 40 mph.
Otherwise, plan on partly to mostly cloudy skies, particularly
with the decaying showers in the afternoon. Southeast winds 5 to
10 mph early this morning will gradually veer south-southwest
while increasing with gusts to around 20 mph mid to late
afternoon. A lake breeze will likely develop just offshore of the
Indiana shore this afternoon, but is expected to remain several
miles north of the burn site given the stronger opposing flow.
Minimum RH values will reach around 40 percent, though reduced
mixing and slightly higher RH values cannot be ruled out this
afternoon if showers and associated cloud cover are slower to
decay than currently forecast.
.REST OF TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon, then a
slight chance of showers toward sunset.
Temperature.........60 at ignition...Max 71.
RH..................51 percent at ignition...Min 40 percent.
Wind (20 ft)........Winds south at 9 mph at ignition...otherwise
South winds 10 to 13 mph with gusts to 21 mph.
Gusty winds possible with the late afternoon
showers.
Chance of pcpn......20 percent.
Transport winds.....South 12 to 17 mph shifting to the southwest 18
to 20 mph in the afternoon.
Mixing height.......2300 ft AGL at ignition...otherwise 4700 ft
AGL.
Smoke dispersal.....Fair /22100 knot-ft/ at ignition.
Max...excellent /80000 knot-ft/.
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........60 58 58 46 45 44 60
Weather cov..... SCH SCH SCH SCH
Weather type.... RW RW RW RW
Temp............60 63 66 68 70 71 71
RH..............51 44 40 42 42 41 42
20 FT wind dir..170 180 190 200 200 200 210
20 FT wind spd..9 10 12 13 13 13 13
20 FT wind gust.12 14 18 19 20 21 21
Mix hgt (kft)...2.3 2.9 4.1 4.4 4.7 4.7 4.3
Transp wind dir.170 180 190 200 200 210 210
Transp wind spd.12 15 17 18 20 20 20
Chc of pcpn (%).10 10 0 0 10 10 20
Vrate kt-ft/1K..22 37 62 70 80 80 73
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of showers and
thunderstorms.
Temperature.........Min 54.
RH..................Max 96 percent.
Wind (20 ft)........Southwest winds 7 to 10 mph decreasing to 5 to
6 mph early in the evening.
Chance of pcpn......50 percent.
Transport winds.....Southwest 12 to 17 mph decreasing to 8 to 12
mph early in the evening.
Mixing height.......400 ft AGL.
Smoke dispersal.....Good (36800 knot-ft) early in the evening
decreasing to poor (2700 knot-ft) late in the
night.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........74 84 85 81 85 85 79 72 74 76 83 88
Weather cov.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
Weather type....RW RW RW RW RW RW RW RW RW RW RW RW
Temp............69 66 63 62 61 60 58 56 56 56 55 55
RH..............47 56 70 72 75 78 83 90 90 90 93 93
20 FT wind dir..210 200 200 200 200 200 200 200 210 230 240 230
20 FT wind spd..12 8 6 5 5 5 5 6 5 5 5 5
20 FT wind gust.15 9
Mix hgt (kft)...2.5 0.6 0.6 0.5 0.5 0.4 0.5 0.4 0.4 0.4 0.4 0.4
Transp wind dir.210 200 200 200 200 200 200 210 210 230 230 230
Transp wind spd.17 12 10 10 9 12 12 9 9 9 8 8
Chc of pcpn (%).40 40 40 40 30 30 30 30 30 30 50 50
Vrate kt-ft/1K..37 5 5 4 4 4 5 3 3 3 3 3
.WEDNESDAY...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of showers and thunderstorms.
Temperature.........Max 68.
RH..................Min 61 percent.
Wind (20 ft)........Southwest winds 5 to 6 mph shifting to the
northeast around 6 mph mid afternoon.
Chance of pcpn......50 percent.
Transport winds.....South 7 to 12 mph shifting to the east 10 to 12
mph late in the afternoon.
Mixing height.......2100 ft AGL.
Smoke dispersal.....Poor (2700 knot-ft) early in the morning
increasing to fair (21700 knot-ft) in the
afternoon.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........89 86 80 71 58 54 51 47 47 46 45 50
Weather cov.....CHC SCH SCH SCH SCH SCH SCH SCH SCH
Weather type....RW RW RW RW RW RW RW RW RW
Temp............55 54 56 59 61 65 67 68 67 65 62 62
RH..............90 96 90 83 81 73 68 61 61 63 67 67
20 FT wind dir..220 210 210 220 220 200 160 150 120 090 070 070
20 FT wind spd..5 5 5 5 6 6 7 7 7 7 7 6
20 FT wind gust. 8 8 9 9 8
Mix hgt (kft)...0.4 0.5 0.5 0.9 1.1 1.3 1.8 2.0 2.1 1.9 1.7 1.3
Transp wind dir.210 210 200 190 190 180 160 150 120 100 070 080
Transp wind spd.7 8 8 10 10 12 13 13 12 12 12 10
Chc of pcpn (%).50 20 20 20 10 10 10 20 20 20 20 20
Vrate kt-ft/1K..3 4 4 8 10 14 21 22 21 18 16 11
$$
Forecaster...Kluber
Requested by...Eric Anderson
Type of request...PRESCRIBED
.TAG 2511292.0/LOT
.DELDT 04/22/25
.FormatterVersion 2.0.0