021
FNUS73 KLSX 270157
FWSLSX

Spot Forecast for Crocker Fire...Mark Twain NF
National Weather Service Saint Louis MO
857 PM CDT Thu Mar 26 2026

Forecast is based on forecast start time of 2100 CDT on March 26.
If conditions become unrepresentative, contact the
National Weather Service.

.DISCUSSION...
Southwest winds will be fairly light to start the evening, but a
cold front is already approaching. It arrives at the fire location
around 1AM, shifting winds to the north with stronger gusts to 25
mph. Rain and thunderstorms are possible during the early morning
hours. Conditions get much cooler behind the front, but will still
be dry on Friday with a northerly wind.

.REST OF TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (25-35 percent) then becoming
                    mostly cloudy (75-85 percent). Rain showers and
                    chance of thunderstorms overnight.
CWR.................26 percent.
Chance of thunder...36 percent.
Temperature.........80 at forecast start...Min 42.
RH..................44 percent at forecast start...Max 93 percent.
Eye level winds.....2 to 4 mph.
Wind (20 ft)........Winds southwest at 9 mph shifting to the north
                    7 to 12 mph with gusts to around 25 mph overnight.
                    Gusty and erratic winds expected near thunderstorms
                    overnight, mainly after 3 am.
Mixing height.......800 ft AGL at forecast start...increasing overnight.
Transport winds.....Southwest 13 to 20 mph shifting to the north 12
                    to 18 mph overnight, then increasing to around
                    22 mph after 3 am.
Smoke dispersal.....Poor /2180 m/s-m/ at forecast start. Min...poor
                    /1320 m/s-m/.

TIME (CDT)      9 PM   11 PM  1 AM   3 AM   5 AM   7 AM
Sky (%).........59     18     38     68     92     94
Weather cov.....              CHANCE CHANCE DEFNTE LIKELY
Weather type....NONE   NONE   RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........              CHANCE CHANCE S CHC
CWR.............30     30     30     30     30     30
Chc of thdr (%).0      10     30     40     20     10
Temp............80     76     72     66     59     49
RH..............44     50     64     68     69     86
20 ft wind......S 9    SW 7   W 6    N 11   N 12   N 12
20 ft wind gust.25     19     18     21     24     24
Eye level wind..S 4    SW 3   W 3    N 5    N 6    N 6
Eye lvl wnd gst.12     9      8      10     11     11
Mix hgt (kft)...0.8    0.8    0.9    1.5    1.7    1.7
Transport wind..SW 20  SW 16  W 13   N 18   N 22   N 25
Vrate kt-ft/1K..14     11     10     24     32     38
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   POOR

.FRIDAY...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    mostly sunny (35-45 percent). Rain showers
                    likely and slight chance of thunderstorms in
                    the morning.
CWR.................25 percent.
Chance of thunder...24 percent.
Temperature.........Max 56.
RH..................Min 36 percent.
Eye level winds.....4 mph.
Wind (20 ft)........North winds 11 to 13 mph with gusts to around
                    25 mph. Gusty and erratic winds expected near
                    thunderstorms early in the morning.
Mixing height.......Max 3600 ft AGL.
Transport winds.....North 22 to 26 mph.
Smoke dispersal.....Marginal (5910 m/s-m) early in the morning
                    increasing to good max (12520 m/s-m) in the
                    afternoon.

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy (20-30 percent) then becoming
                    clear (0-10 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Temperature.........Min 31.
RH..................Max 63 percent.
Eye level winds.....2 mph.
Wind (20 ft)........North winds around 5 mph with gusts to around
                    20 mph early in the evening becoming light.
Mixing height.......Min 600 ft AGL.
Transport winds.....North 12 to 20 mph.
Smoke dispersal.....Marginal (5950 m/s-m) early in the evening
                    decreasing to poor min (910 m/s-m) late in the
                    night.

.SATURDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Temperature.........Max 58.
RH..................Min 20 percent.
Eye level winds.....5 mph.
Wind (20 ft)........Light winds.
Mixing height.......Max 3900 ft AGL.
Transport winds.....Northeast 13 to 14 mph shifting to the
                    southeast 10 to 12 mph in the afternoon.
Smoke dispersal.....Poor (990 m/s-m) early in the morning
                    increasing to fair max (6020 m/s-m) in the
                    afternoon.

$$
Forecaster...Kimble
Requested by...Patric Marlow
Type of request...WILDFIRE
.TAG 2608091.0/LSX
.DELDT 03/26/26
.FormatterVersion 2.0.0