806
FNUS73 KLSX 282037
FWSLSX

Spot Forecast for North Stone Hill...MO-MTF
National Weather Service Saint Louis MO
337 PM CDT Fri Mar 28 2025

Forecast is based on forecast start time of 1600 CDT on March 28.
If conditions become unrepresentative, contact the
National Weather Service.

.DISCUSSION...
Cloud cover streaming into the region will only become denser this
evening through the overnight hours as temperatures very slowly
drop to around 60 degrees for overnight lows. These cooling
temperatures and increasing low-level moisture will lead to RH
increasing through the overnight hours. This increase in moisture
will also lead to increasing chances for showers and thunderstorms after
midnight tonight, with fluctuating chances for rain continuing
through Sunday. Winds will weaken slightly this evening, but
remain gusty and out of the south through the night before picking
back up Saturday morning.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (75-85 percent).
Chance of pcpn......10 percent.
Temperature.........71 at forecast start...Max 78.
RH..................44 percent at forecast start...Min 36 percent.
Wind (20 ft)........Winds southwest at 13 mph
                    with gusts to around 28 mph.
Eye level winds.....Winds southwest at 5 mph
                    with gusts to around 10 mph. Adjustment factor
of 0.4 used.
Mixing height.......4300 ft AGL at forecast start...otherwise max
                    4300 ft AGL.
Transport winds.....Southwest 30 to 31 mph.
Smoke dispersal.....Excellent /18160 m/s-m/ at forecast start.
                    Max...excellent /18160 m/s-m/.

TIME (CDT)      11 AM  1 PM   3 PM   5 PM   7 PM   9 PM
Sky (%).........80     83     80     74     76     73
Weather cov.....                                   CHANCE
Weather type....NONE   NONE   NONE   NONE   NONE   RAIN
Tstm cov........
CWR.............10     10     10     10     10     40
Temp............71     74     70     67     66     63
RH..............44     44     53     59     56     67
20 ft wind......SW 13  S 11   S 7    S 6    S 7    S 7
20 ft wind gust.28     24     21     20     21     21
Eye level wind..SW 6   S 5    S 3    S 3    S 3    S 3
Eye lvl wnd gst.13     11     10     9      10     10
Mix hgt (kft)...4.3    2.2    0.4    0.5    0.6    0.6
Transport wind..SW 31  S 25   S 13   S 15   S 17   S 17
Vrate kt-ft/1K..116    49     5      7      8      8
Ventrate Cat....VYGD   FAIR   POOR   POOR   POOR   POOR

.TONIGHT...

Sky/weather.........Mostly cloudy (75-85 percent). Chance of rain
                    overnight.
Chance of pcpn......50 percent.
Temperature.........Min 58.
RH..................Max 93 percent.
Wind (20 ft)........South winds 6 to 11 mph with gusts to around 24
                    mph.
Eye level winds.....South winds 5 mph with gusts to around 10
                    mph. Adjustment factor of 0.4 used.
Mixing height.......Min 400 ft AGL.
Transport winds.....South around 25 mph decreasing to 13 to 21 mph.
Smoke dispersal.....Fair (7710 m/s-m) early in the evening
                    decreasing to poor min (720 m/s-m) late in the
                    night.

.SATURDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Chance of rain
                    early in the morning, then rain likely late in
                    the morning. Chance of rain in the afternoon.
Chance of pcpn......70 percent.
Temperature.........Max 70.
RH..................Min 66 percent.
Wind (20 ft)........South winds 6 to 8 mph with gusts to around 20
                    mph.
Eye level winds.....South winds 5 mph with gusts to around 10
                    mph. Adjustment factor of 0.4 used.
Mixing height.......Max 2000 ft AGL.
Transport winds.....South 20 to 21 mph.
Smoke dispersal.....Poor (2250 m/s-m) early in the morning
                    increasing to marginal max (5580 m/s-m) in the
                    afternoon.

$$
Forecaster...Elmore
Requested by...David Knight
Type of request...WILDFIRE
.TAG 2508359.0/LSX
.DELDT 03/28/25
.FormatterVersion 2.0.0