509
FNUS73 KLSX 121156
FWSLSX
SPOT FORECAST FOR FLAT ROCK...ST. LOUIS COUNTY PARKS FORESTRY
NATIONAL WEATHER SERVICE SAINT LOUIS MO
556 AM CST THU DEC 12 2024
FORECAST IS BASED ON IGNITION TIME OF 1100 CST ON DECEMBER 12.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
WINDS WILL BE LIGHT AND MAINLY OUT OF THE EAST TODAY. WHILE A WARM
FRONT DOES LIFT NORTH TODAY, IT'S NOT EXPECTED TO SHIFT THE WIND
DIRECTION IN THIS LOCATION. WINDS GRADUALLY BECOME NORTHEAST LATER
IN THE DAY. THE WIND IS NOT EXPECTED TO HAVE A SOUTHERLY COMPONENT
UNTIL FRIDAY.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT) THEN BECOMING
MOSTLY SUNNY (25-35 PERCENT).
TEMPERATURE.........30 AT IGNITION...MAX 38.
RH..................46 PERCENT AT IGNITION...MIN 45 PERCENT.
WIND (20 FT)........WINDS EAST AT 6 MPH AT IGNITION...OTHERWISE
EAST WINDS AROUND 6 MPH SHIFTING TO THE
NORTHEAST LATE IN THE AFTERNOON.
EYE LEVEL WINDS.....2 MPH.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH AT IGNITION...MAX 3.
MIXING HEIGHT.......2000 FT AGL AT IGNITION...OTHERWISE MAX 2400 FT
AGL.
TRANSPORT WINDS.....EAST 10 TO 12 MPH.
SMOKE DISPERSAL.....POOR /2860 M/S-M/ AT IGNITION. MAX...POOR /3710
M/S-M/.
TIME (CST) 11 AM 1 PM 3 PM 5 PM 7 PM 9 PM
SKY (%).........75 60 23 32 52 55
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
TEMP............30 34 37 33 30 27
RH..............46 47 48 58 60 65
20 FT WIND......E 6 E 6 E 6 NE 6 NE 7 NE 7
20 FT WIND GUST.9 10 10 10 10 8
EYE LEVEL WIND..E 3 E 3 E 3 NE 3 NE 3 NE 3
EYE LVL WND GST.4 5 5 5 5 4
MIX HGT (KFT)...2.0 2.4 1.9 0.6 0.6 0.7
TRANSPORT WIND..SE 10 SE 12 E 10 E 10 NE 14 E 14
HAINES INDEX....3 3 3 3 3 3
VRATE KT-FT/1K..18 24 17 6 7 9
VENTRATE CAT....POOR POOR POOR POOR POOR POOR
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT).
TEMPERATURE.........MIN 23.
RH..................MAX 81 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 7 MPH.
EYE LEVEL WINDS.....2 MPH.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......MIN 600 FT AGL.
TRANSPORT WINDS.....EAST 9 TO 16 MPH.
SMOKE DISPERSAL.....POOR (1040 M/S-M).
FORECASTER...KIMBLE
REQUESTED BY...JASON PRATTE
TYPE OF REQUEST...PRESCRIBED
.TAG 2428425.0/LSX
.DELDT 12/12/24
.FORMATTERVERSION 2.0.0
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