797
FNUS73 KLSX 011229
FWSLSX

Spot Forecast for Sinkin RX Block 3-5...USFS
National Weather Service Saint Louis MO
729 AM CDT Tue Apr 1 2025

Forecast is based on ignition time of 1000 CDT on April 01.
If conditions become unrepresentative, contact the
National Weather Service.

.DISCUSSION...
Winds will increase from the southeast this morning and become
gusty this afternoon.  Warmer temperatures will reduce the relative
humidity to between 30-35 percent during the afternoon.  The lower
atmosphere will be fairly unstable today allowing smoke to rise
quickly, and increasing transport winds will produce fair to good
ventilation rates.

Periods of showers and thunderstorms are likely for the remainder
of the week.  Periods of heavy rain will be possible Thursday
through Saturday.

.REST OF TODAY...

Sky/weather.........Mostly sunny (35-45 percent).
Chance of pcpn......0 percent.
Temperature.........47 at ignition...Max 65.
RH..................65 percent at ignition...Min 36 percent.
Wind (20 ft)........Winds southeast at 11 mph at
                    ignition...otherwise Southeast winds 10 to 14
                    mph with gusts to around 24 mph.
Eye level winds.....3-4 mph, gusting to 7 mph using an adjustment
factor of 0.3.
Mixing height.......2200 ft AGL at ignition...otherwise max 3300 ft
                    AGL.
Transport winds.....Southeast 21 to 28 mph.
Smoke dispersal.....Fair /6220 m/s-m/ at ignition. Max...good
                    /11670 m/s-m/.

TIME (CDT)      5AM 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM
Sky (%).........42  39  30  40  42  41  45  35  40  43  46  62
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   10
Temp............47  51  55  58  62  63  64  65  63  61  60  59
RH..............65  56  47  44  38  36  37  37  41  48  49  55
20 FT wind dir..SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..11  11  10  10  10  11  13  14  13  14  13  13
20 FT wind gust.20  20  18  18  18  21  22  24  25  27  29  30
Eye lvl wnd dir.SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
Eye lvl wnd spd.5   5   5   5   5   5   6   6   6   6   6   6
Eye lvl wnd gst.9   9   8   8   8   10  10  11  12  12  13  14
Mix hgt (kft)...2.2 2.8 2.8 3.0 3.2 3.3 3.3 3.1 2.8 1.1 0.9 1.0
Transp wind dir.SE  SE  SE  S   SE  S   SE  SE  SE  SE  SE  S
Transp wind spd.21  21  21  21  22  23  25  28  28  22  23  24
Vrate kt-ft/1K..40  50  51  54  61  65  73  74  67  20  17  20
Ventrate Cat....PR  FR  FR  FR  GD  GD  GD  GD  GD  PR  PR  PR

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (75-85 percent). Slight chance of
                    showers and thunderstorms early in the morning.
Chance of pcpn......20 percent.
Temperature.........Min 57.
RH..................Max 90 percent.
Wind (20 ft)........Southeast winds 13 to 16 mph with gusts to
                    around 33 mph. Gusty and erratic winds expected
                    near thunderstorms early in the morning.
Eye level winds.....4-5 mph, gusting to 10 mph using an adjustment
factor of 0.3.
Mixing height.......Min 900 ft AGL.
Transport winds.....South 22 to 28 mph.
Smoke dispersal.....Good (10480 m/s-m) early in the evening
                    decreasing to poor min (2580 m/s-m) late in the
                    night.

.WEDNESDAY...

Sky/weather.........Cloudy (90-100 percent). Showers and
                    thunderstorms likely in the morning, then
                    showers and thunderstorms in the afternoon.
Chance of pcpn......80 percent.
Temperature.........Max 75.
RH..................Min 66 percent.
Wind (20 ft)........South winds 14 to 19 mph with gusts to around
                    39 mph. Gusty and erratic winds expected near
                    thunderstorms.
Eye level winds.....4-6 mph, gusting to 12 mph, using an adjustment
factor of 0.3.
Mixing height.......Max 2800 ft AGL.
Transport winds.....South 25 to 33 mph.
Smoke dispersal.....Poor (4350 m/s-m) early in the morning
                    increasing to good max (12910 m/s-m) in the
                    afternoon.

$$
Forecaster...Delia
Requested by...Chad Randolph
Type of request...PRESCRIBED
.TAG 2508543.0/LSX
.DELDT 04/01/25
.FormatterVersion 2.0.0