746
FNUS73 KLOT 081254
FWSLOT

Spot Forecast for Prairie Cr...MIDEWIN
National Weather Service Chicago IL
754 AM CDT Tue Apr 8 2025

Forecast is based on ignition time of 0800 CDT on April 08.
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 weather is expected today with northwest winds 5 to
10 mph becoming west this afternoon. The winds will become southeast
this evening. Minimum relative humidity levels are expected to drop
into the mid 20 percent range this afternoon. Dry weather will
continue for most of tonight and then there will be a chance of rain
and snow toward daybreak Wednesday morning. Periods of rain are
expected Wednesday.

.REST OF TODAY...

Sky/weather.........Sunny.
Temperature.........30 at ignition...Max 45.
RH..................58 percent at ignition...Min 27 percent.
Wind (20 ft)........Winds northwest at 5 mph at
                    ignition...otherwise Northwest winds 5 to 6 mph
                    shifting to the west late in the afternoon.
Chance of pcpn......0 percent.
Transport winds.....Northwest 9 to 10 mph shifting to the west
                    late in the afternoon.
Mixing height.......2700 ft AGL at ignition...otherwise 5900 ft
                    AGL.
Smoke dispersal.....Fair /21600 knot-ft/ at ignition. Max...good
                    /51400 knot-ft/.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4   4   4   4   4   4   12  20  24  24
Weather cov.....
Weather type....
Temp............30  32  34  36  38  39  41  44  45  45
RH..............58  51  45  42  38  39  34  29  27  27
20 FT wind dir..330 320 320 310 310 300 300 290 280 270
20 FT wind spd..5   5   6   6   7   7   7   7   7   6
20 FT wind gust.9   9   10  10  10  10  10  10  10  9
Mix hgt (kft)...2.7 3.9 4.4 4.8 5.3 5.4 5.6 5.9 5.7 5.5
Transp wind dir.330 320 320 310 310 300 300 290 280 270
Transp wind spd.9   9   9   10  10  9   9   9   10  9
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0
Vrate kt-ft/1K..22  31  35  43  45  43  45  47  51  44

.TONIGHT...

Sky/weather.........Partly cloudy then becoming mostly cloudy.
Temperature.........Min 31.
RH..................Max 75 percent.
Wind (20 ft)........Southwest winds around 5 mph shifting to the
                    southeast 5 to 8 mph early in the evening, then
                    shifting to the south around 9 mph early in the
                    morning.
Chance of pcpn......10 percent.
Transport winds.....West around 9 mph shifting to the south 3 to 6
                    mph early in the evening, then increasing to
                    southeast 8 to 13 mph in the late evening and
                    overnight shifting to the south 14 to 15 mph
                    overnight.
Mixing height.......400 ft AGL.
Smoke dispersal.....Good (42800 knot-ft) early in the evening
                    decreasing to poor (1700 knot-ft) late in the
                    night.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........24  22  23  24  26  33  40  47  53  60  67  75
Weather cov.....
Weather type....
Temp............44  42  39  37  35  34  32  31  31  32  32  33
RH..............28  30  35  40  45  49  58  66  69  69  72  72
20 FT wind dir..260 210 170 150 130 140 140 140 150 160 160 160
20 FT wind spd..5   5   5   6   7   7   8   8   8   9   9   10
20 FT wind gust.8   6   6   7   8   9   10  12  13  13  14  16
Mix hgt (kft)...5.4 0.6 0.6 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.6
Transp wind dir.260 210 170 150 140 140 140 140 150 160 160 160
Transp wind spd.9   3   3   6   8   10  12  13  14  14  14  15
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   10  10
Vrate kt-ft/1K..43  2   2   2   3   4   5   5   6   6   6   7

.WEDNESDAY...

Sky/weather.........Cloudy. Chance of snow early in the morning.
                    Chance of rain early in the morning, then rain
                    in the late morning and afternoon.
Temperature.........Max 50.
RH..................Min 70 percent.
Wind (20 ft)........South winds 10 to 13 mph increasing to 14 to 16
                    mph with gusts to around 28 mph in the late
                    morning and afternoon, then decreasing to
                    around 12 mph late in the afternoon.
Chance of pcpn......80 percent.
Transport winds.....South 15 to 17 mph increasing to 22 to 26 mph
                    early in the morning, then increasing to 23 to
                    28 mph late in the morning decreasing to 15 to
                    17 mph late in the afternoon.
Mixing height.......2500 ft AGL.
Smoke dispersal.....Poor (7900 knot-ft) early in the morning
                    increasing to excellent (61300 knot-ft) in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........83  91  92  93  94  95  96  97  97  96  96  95
Weather cov.....    CHC CHC CHC DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....    SN  RN  RN  RN  RN  RN  RN  RN  RN  RN  RN
Temp............33  35  37  38  38  40  43  45  47  49  50  50
RH..............75  72  70  70  76  76  73  73  74  71  71  71
20 FT wind dir..160 170 170 170 170 170 170 170 170 170 170 160
20 FT wind spd..12  13  14  15  16  17  17  17  17  16  15  13
20 FT wind gust.18  21  22  23  24  25  28  28  26  25  23  21
Mix hgt (kft)...0.6 0.6 1.2 1.3 1.4 1.8 2.3 2.5 2.3 1.9 1.5 1.2
Transp wind dir.170 170 170 170 170 170 170 170 170 170 170 160
Transp wind spd.15  17  22  24  26  28  26  28  28  23  17  15
Chc of pcpn (%).10  50  50  50  80  80  80  80  80  80  80  80
Vrate kt-ft/1K..8   10  22  28  33  42  54  61  54  38  23  15

$$
Forecaster...cms
Requested by...Strohmeyer
Type of request...PRESCRIBED
.TAG 2509178.0/LOT
.DELDT 04/08/25
.FormatterVersion 2.0.0