245
FNUS73 KPAH 281350
FWSPAH

Spot Forecast for Waltonville Subimpoundment Dam Burn...ILLINOIS DNR
National Weather Service Paducah KY
750 AM CST Fri Feb 28 2025

Forecast is based on ignition time of 1000 CST on February 28.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Breezy conditions are expected today with southwest winds gusting
to 25 to 35 mph by late morning, becoming west by late afternoon.
Humidity will fall to around 30% this afternoon with very good to
excellent dispersion and mixing heights climbing near 5500 feet.
Lesser winds from the north can be expected Saturday, with good
dispersion and humidity dropping to around 35%.

.TODAY...

Sky/weather.........Sunny (0-5 percent).
CWR.................0 percent.
Temperature.........55 at ignition...Max 69.
RH..................49 percent at ignition...Min 32 percent.
Wind (20 ft)........
 Slope/valley.......Winds southwest at 15 mph at
                    ignition...otherwise Southwest winds 15 to 18
                    mph shifting to the west 12 to 14 mph late in
                    the afternoon.
Mixing height.......1600 ft AGL at ignition...otherwise 4900 ft
                    AGL.
Transport winds.....Southwest 28 to 37 mph shifting to the west 21
                    to 25 mph late in the afternoon.
Smoke dispersal.....Poor /39000 knot-ft/ at ignition. Max...very
                    good /134400 knot-ft/ increasing to excellent
                    (151300 knot-ft) late in the afternoon, then
                    decreasing to poor (22700 knot-ft) early in the
                    morning increasing to fair (46800 knot-ft) in
                    the afternoon late in the afternoon.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CLR CLR CLR CLR CLR CLR CLR CLR
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0
Temp............55  59  62  66  68  69  68  65
RH..............49  45  43  37  33  32  33  38
20 FT wind dir..SW  SW  SW  SW  SW  SW  W   W
20 FT wind spd..15  16  18  18  18  16  14  12
20 FT wind gust.25  28  28  28  26  26  23  21
Mix hgt (kft)...1.6 2.1 2.6 3.3 4.2 4.9 2.1 1.3
Transp wind dir.SW  SW  SW  SW  SW  W   W   W
Transp wind spd.28  31  33  35  37  36  25  21
Vrate kt-ft/1K..39  57  76  98  134 151 47  23
Ventrate Cat....PR  FR  GD  GD  VGD EXL FR  PR

.SATURDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Temperature.........Max 43.
RH..................Min 36 percent.
Wind (20 ft)........
 Slope/valley.......North winds 7 to 10 mph.
Mixing height.......5500 ft AGL.
Transport winds.....North 15 to 22 mph.
Smoke dispersal.....Poor (24000 knot-ft) early in the morning
                    increasing to good (91900 knot-ft) in the
                    afternoon.

TIME (CST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............34  33  34  37  38  40  40  41  42  43  41  39
RH..............66  66  61  54  50  46  44  41  39  36  37  39
20 FT wind dir..NW  N   N   N   N   N   N   N   N   N   N   N
20 FT wind spd..7   8   9   10  10  10  10  10  10  10  9   8
20 FT wind gust.15  15  16  18  18  18  17  17  17  17  16  15
Mix hgt (kft)...1.6 2.1 2.7 3.5 3.9 4.5 5.0 5.2 5.5 5.5 4.2 2.4
Transp wind dir.N   N   N   N   N   N   N   N   N   N   N   N
Transp wind spd.17  20  21  22  20  20  20  20  20  18  17  15
Vrate kt-ft/1K..24  36  49  66  66  76  86  88  92  87  61  31
Ventrate Cat....PR  PR  FR  GD  GD  GD  GD  GD  GD  GD  GD  PR

$$
Forecaster...TREVINO
Requested by...Cody langan
Type of request...PRESCRIBED
.TAG 2504371.0/PAH
.DELDT 02/28/25
.FormatterVersion 2.0.0
.EMAIL cody.langan@illinois.gov