135
FNUS73 KLSX 281750
FWSLSX

Spot Forecast for Karst West...Missouri Department of Natural Resources
National Weather Service Saint Louis MO
1150 AM CST Fri Feb 28 2025

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

...RED FLAG WARNING IN EFFECT UNTIL 8 PM CST THIS EVENING...

.DISCUSSION...
Breezy winds out of the north-northwest are expected for much of
the day tomorrow, with slowly decreasing speeds during the late
afternoon hours. Cooler temperatures are also expected, which will
help to increase humidity slightly, but it will remain dry and
moderately unstable overall. These conditions may support erratic
fire spread, particularly during the early afternoon. Much lighter
wind speeds are expected overnight, which will become
southeasterly but remain light Sunday. Mild temperatures are also
expected, but low humidity and moderately unstable conditions will
persist. No precipitation is expected.

.SATURDAY...

Sky/weather.........Sunny (5-15 percent).
Chance of pcpn......0 percent.
Temperature.........36 at ignition...Max 43.
RH..................50 percent at ignition...Min 32 percent.
Wind (20 ft)........Winds north at 9 to 12 mph with gusts 18 mph.
                    Decreasing to 5 to 10 mph by sunset.
Eye level winds.....Winds north at 4 to 6 mph with gusts 9 mph.
                    Decreasing to 2 to 3 mph by sunset.
Mixing height.......3300 ft AGL at ignition...otherwise max 4700 ft
                    AGL.
Transport winds.....North 10 to 17 mph.
Smoke dispersal.....Fair /7730 m/s-m/ at ignition. Max...good
                    /10280 m/s-m/.

TIME (CST)      10 AM  NOON   2 PM   4 PM   6 PM   8 PM
Sky (%).........13     7      6      8      11     13
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Temp............36     41     43     42     38     34
RH..............50     37     33     32     35     45
20 ft wind......N 10   N 9    N 9    N 7    N 4    N 2
20 ft wind gust.16     15     15     12     8      7
Eye level wind..N 5    N 4    N 4    N 3    N 2    N 1
Eye lvl wnd gst.7      7      7      6      4      3
Mix hgt (kft)...3.3    4.1    4.5    3.2    0.3    0.3
Transport wind..N 17   N 16   N 16   N 14   N 8    NE 8
Vrate kt-ft/1K..49     57     65     38     2      2
Ventrate Cat....FAIR   FAIR   GOOD   POOR   POOR   POOR

.SATURDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Chance of pcpn......0 percent.
Temperature.........Min 24.
RH..................Max 65 percent.
Wind (20 ft)........Light winds.
Eye level winds.....Light winds.
Mixing height.......300 ft AGL.
Transport winds.....Northeast around 8 mph shifting to the
                    southeast 6 to 7 mph overnight.
Smoke dispersal.....Poor (240 m/s-m).

.SUNDAY...

Sky/weather.........Sunny (5-15 percent).
Chance of pcpn......0 percent.
Temperature.........Max 49.
RH..................Min 34 percent.
Wind (20 ft)........Light winds becoming southeast 4 to 6 mph late
                    in the morning.
Eye level winds.....Light winds becoming southeast 2 to 3 mph late
                    in the morning.
Mixing height.......Max 3500 ft AGL.
Transport winds.....South 7 to 13 mph.
Smoke dispersal.....Poor (270 m/s-m) early in the morning
                    increasing to marginal max (5440 m/s-m) in the
                    afternoon.

$$
Forecaster...19
Requested by...Roxie Campbell
Type of request...PRESCRIBED
.TAG 2504389.0/LSX
.DELDT 02/28/25
.FormatterVersion 2.0.0