333
FNUS73 KLOT 131313
FWSLOT

Spot Forecast for Miller 3 RX Burn...NPS
National Weather Service Chicago IL
813 AM CDT Sun Apr 13 2025

Forecast is based on ignition time of 0900 CDT on April 13.
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...
Southerly winds are already beginning to gust over 20 mph this
morning. Wind gusts will continue to increase through the day with
peak gusts in the afternoon between 30 to 35 mph. Relative
humidity will decrease through the day down to the upper 30s to
low 40s. Temperatures will slowly reach the low to mid 60s this
afternoon.

There will be a series waves that may produce precipitation at the
burn site over the next 48 hours. However, low level dry air
reduces confidence in any appreciable accumulations. The chances
remain around 15 to 20 percent for some isolated sprinkles. The
best chances for precip would be in the early to mid afternoon
today.

Good humidity recovery is expected overnight. Winds turn to the
west tomorrow behind a cold front. Wind gusts will increase
tomorrow once again during the day with the potential for gusts up
to 40 mph with RHs once again in the low 40s.

.REST OF TODAY...

Sky/weather.........Mostly cloudy. Slight chance of rain showers
                    late in the afternoon.
Temperature.........53 at ignition...Max 64.
RH..................48 percent at ignition...Min 41 percent.
Wind (20 ft)........Winds south at 14 mph at ignition...otherwise
                    South winds 13 to 16 mph increasing to 16 to 17
                    mph late in the afternoon. Gusts up to 30 mph.
Chance of pcpn......20 percent.
Transport winds.....South 22 to 25 mph increasing to 28 to 32 mph
                    late in the morning.
Mixing height.......1300 ft AGL at ignition...otherwise 2800 ft
                    AGL.
Smoke dispersal.....Fair /26000 knot-ft/ at ignition.
                    Max...excellent /78100 knot-ft/.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........77  75  77  79  84  85  84  82  80
Weather cov.....                        SCH
Weather type....                        RW
Temp............53  55  55  58  60  61  62  63  64
RH..............48  47  49  45  42  42  41  41  41
20 FT wind dir..170 170 170 170 170 170 160 160 170
20 FT wind spd..14  15  16  17  17  18  18  18  17
20 FT wind gust.25  28  28  29  29  30  30  30  28
Mix hgt (kft)...1.3 1.6 2.0 2.2 2.2 2.5 2.3 2.6 2.8
Transp wind dir.170 170 180 170 170 170 160 160 170
Transp wind spd.22  25  28  28  29  30  31  32  32
Chc of pcpn (%).0   0   0   0   0   10  20  10  0
Vrate kt-ft/1K..26  34  48  53  57  65  63  72  78

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
Temperature.........Min 52.
RH..................Max 89 percent.
Wind (20 ft)........South winds 12 to 14 mph decreasing to 7 to 10
                    mph in the late evening and overnight, then
                    shifting to the west around 7 mph early in the
                    morning.
Chance of pcpn......10 percent.
Transport winds.....South around 26 mph becoming southwest 13 to 14
                    mph.
Mixing height.......500 ft AGL.
Smoke dispersal.....Good (52200 knot-ft) early in the evening
                    decreasing to poor (5200 knot-ft) late in the
                    night.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........73  70  74  71  70  68  63  59  57  54  52  52
Weather cov.....
Weather type....
Temp............63  61  59  59  59  58  57  56  54  54  53  52
RH..............44  50  53  55  57  60  67  72  77  80  83  89
20 FT wind dir..170 170 160 170 170 170 170 180 200 210 230 250
20 FT wind spd..15  13  13  12  12  12  10  9   9   8   8   8
20 FT wind gust.25  23  22  21  21  21  17  16  17  14  14  16
Mix hgt (kft)...2.3 0.9 0.8 0.7 0.8 0.7 0.6 0.5 0.5 0.5 0.5 0.6
Transp wind dir.170 170 160 160 170 170 170 180 200 210 230 250
Transp wind spd.26  20  18  20  20  18  16  15  14  13  13  14
Chc of pcpn (%).10  10  10  10  10  10  10  0   0   0   0   10
Vrate kt-ft/1K..52  15  13  12  13  11  9   7   6   5   5   7

.MONDAY...

Sky/weather.........Partly cloudy then becoming mostly cloudy then
                    becoming partly cloudy then becoming mostly
                    sunny.
Temperature.........Max 60.
RH..................Min 44 percent.
Wind (20 ft)........West winds 7 to 10 mph increasing to 16 to 17
                    mph.
Chance of pcpn......10 percent.
Transport winds.....West 15 to 18 mph increasing to 30 to 35 mph.
Mixing height.......5900 ft AGL.
Smoke dispersal.....Poor (9000 knot-ft) early in the morning
                    increasing to excellent (97100 knot-ft) in the
                    afternoon increasing to excellent (127400
                    knot-ft) in the afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........57  62  68  76  80  78  68  55  44  35  28  25
Weather cov.....
Weather type....
Temp............52  52  54  55  56  57  57  58  60  60  60  59
RH..............86  83  74  69  64  57  55  51  46  44  44  44
20 FT wind dir..280 280 260 270 270 270 270 270 270 270 270 270
20 FT wind spd..8   8   12  13  13  15  16  17  18  18  20  20
20 FT wind gust.17  17  21  22  23  24  26  29  29  29  30  30
Mix hgt (kft)...0.7 0.7 1.0 1.7 2.3 3.1 4.2 4.9 5.5 5.7 5.9 5.3
Transp wind dir.280 280 260 270 270 270 270 270 270 270 270 270
Transp wind spd.15  18  18  21  22  24  26  30  31  32  32  35
Chc of pcpn (%).10  10  10  10  10  10  10  0   0   0   0   0
Vrate kt-ft/1K..9   12  17  30  43  66  97  127 151 161 168 158

$$
Forecaster...King
Requested by...Eric Anderson
Type of request...PRESCRIBED
.TAG 2510019.0/LOT
.DELDT 04/13/25
.FormatterVersion 2.0.0