918
FNUS73 KLOT 281521
FWSLOT

Spot Forecast for WLFPD Burns...WLFPD
National Weather Service Chicago IL
1021 AM CDT Fri Mar 28 2025

Forecast is based on ignition time of 1800 CDT on March 28.
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...
Mostly clear skies are expected tonight with persistent southwest
gusts into Saturday morning. A cold front is expected to shift
southwestward over the burn site sometime mid to late afternoon,
with an abrupt wind shift from southwest to northeast, though the
exact timing is still uncertain this far out. Cloud cover will
increase through the day on Saturday, with increasing light rain
shower or drizzle chances through the afternoon around and behind
the cold front.

.TONIGHT...

Sky/weather.........Mostly clear.
Temperature.........73 at ignition...Min 57.
RH..................51 percent at ignition...Max 86 percent.
Wind (20 ft)........Winds southwest at 24 mph at
                    ignition...otherwise Southwest winds 20 to 22
                    mph with gusts to around 39 mph decreasing to
                    17 to 18 mph with gusts to around 32 mph
                    overnight.
Chance of pcpn......0 percent.
Transport winds.....Southwest 25 to 29 mph.
Mixing height.......2200 ft AGL at ignition...otherwise 900 ft AGL.
Smoke dispersal.....Good /54500 knot-ft/ at ignition. Min...fair
                    /22800 knot-ft/.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........20  16  15  14  12  12  12  11  18  26  33  39
Weather cov.....
Weather type....
Temp............73  70  68  67  65  64  62  61  60  59  58  57
RH..............51  57  59  59  63  65  70  72  75  80  83  86
20 FT wind dir..220 220 220 220 220 220 230 230 230 230 230 230
20 FT wind spd..24  23  23  23  23  23  22  22  21  21  20  18
20 FT wind gust.39  38  37  37  37  36  35  33  32  31  30  28
Mix hgt (kft)...2.2 1.0 1.0 0.9 1.0 1.0 1.0 1.2 1.1 1.1 1.1 1.1
Transp wind dir.230 230 220 220 230 230 230 240 240 240 240 230
Transp wind spd.29  28  29  29  29  29  29  29  28  28  25  25
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Vrate kt-ft/1K..55  24  23  23  25  26  25  30  26  25  24  23

.SATURDAY...

Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Chance of rain showers in the afternoon.
Temperature.........Max 66.
RH..................Min 70 percent.
Wind (20 ft)........Southwest winds 13 to 16 mph shifting to the
                    northeast mid to late afternoon.
Chance of pcpn......50 percent.
Transport winds.....Southwest 21 to 24 mph becoming south 15 to 17
                    mph early in the afternoon, then shifting to
                    the east around 16 mph late in the afternoon.
Mixing height.......2600 ft AGL.
Smoke dispersal.....Fair (13300 knot-ft) early in the morning
                    increasing to good (47900 knot-ft) in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........46  52  53  55  56  65  74  83  83  84  84  84
Weather cov.....                SCH SCH SCH CHC CHC CHC CHC CHC
Weather type....                RW  RW  RW  RW  RW  RW  RW  RW
Temp............57  58  59  62  64  66  66  66  64  60  53  49
RH..............86  83  83  75  73  70  73  73  75  78  86  96
20 FT wind dir..230 230 230 230 230 220 220 220 210 080 080 070
20 FT wind spd..17  16  15  15  15  14  14  13  12  12  12  12
20 FT wind gust.25  24  24  24  25  23  21  20  18  18  17  17
Mix hgt (kft)...0.9 0.9 1.2 1.5 1.7 2.0 2.3 2.6 2.1 1.6 1.3 1.0
Transp wind dir.230 230 230 230 230 230 230 230 210 150 110 100
Transp wind spd.24  21  23  23  24  24  24  21  16  15  16  16
Chc of pcpn (%).0   10  10  10  10  10  20  30  40  40  50  50
Vrate kt-ft/1K..19  17  24  30  36  43  48  47  29  21  18  13

.SATURDAY NIGHT...

Sky/weather.........Cloudy. Rain showers likely in the evening.
                    Rain showers overnight. Slight chance of
                    thunderstorms through the night.
Temperature.........Min 42.
RH..................Max 100 percent.
Wind (20 ft)........Northeast winds 10 to 13 mph shifting to the
                    east around 9 mph in the late evening and
                    overnight.
Chance of pcpn......80 percent.
Transport winds.....East 10 to 15 mph shifting to the southeast 9
                    to 10 mph.
Mixing height.......400 ft AGL.
Smoke dispersal.....Poor (3400 knot-ft).

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........84  84  87  89  92  93  93  94  93  91  90  91
Weather cov.....CHC LKY LKY LKY LKY LKY LKY DEF DEF DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Temp............46  44  43  42  42  42  42  42  43  44  45  47
RH..............93  93  96  100 100 100 100 100 100 100 96  93
20 FT wind dir..060 060 070 080 080 080 090 090 100 110 120 130
20 FT wind spd..13  14  13  12  10  10  10  10  10  10  10  10
20 FT wind gust.18  21  20  18  17  17  17  17  17  17  17  17
Mix hgt (kft)...0.9 0.9 0.9 0.9 0.9 0.8 0.7 0.7 0.6 0.5 0.4 0.4
Transp wind dir.100 090 090 100 100 110 120 130 120 110 110 120
Transp wind spd.15  15  14  14  13  12  12  10  10  9   9   10
Chc of pcpn (%).50  70  70  70  70  70  70  80  80  80  80  80
Vrate kt-ft/1K..13  12  11  11  10  9   7   6   5   4   3   4

$$
Forecaster...Kluber
Requested by...A. D.
Type of request...PRESCRIBED
.TAG 2508344.0/LOT
.DELDT 03/28/25
.FormatterVersion 2.0.0