209
FNUS73 KLSX 221155
FWSLSX
SPOT FORECAST FOR HAWN PARK WEST...MODNR
NATIONAL WEATHER SERVICE SAINT LOUIS MO
555 AM CST SAT FEB 22 2020
FORECAST IS BASED ON IGNITION TIME OF 1000 CST ON FEBRUARY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
MINIMUM RELATIVE HUMIDITY VALUES WILL FALL TO BETWEEN 25 AND 30 PERCENT
THIS AFTERNOON ACROSS PARTS OF EAST CENTRAL AND SOUTHEAST MISSOURI.
THE 10 HOUR FUEL MOISTURE WILL ALSO ONLY BE ABOUT
7 TO 8 PERCENT. THE 20 FOOT SOUTH-SOUTHWEST WIND SHOULD BE BELOW 12 MPH
ACROSS THIS AREA. WARMER CONDITIONS CAN BE EXPECTED TODAY AND TONIGHT
WITH INCREASED CLOUD COVER AND RAIN SPREADING NORTHWARD INTO MUCH OF THE
AREA BY SUNDAY AFTERNOON AND EVENING.
REST OF TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CHANCE OF PCPN......0 PERCENT.
LAL.................NO TSTMS.
TEMPERATURE.........39 AT IGNITION...MAX 51.
RH..................40 PERCENT AT IGNITION...MIN 27 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 7 MPH AT
IGNITION...OTHERWISE SOUTH WINDS 7 TO 9 MPH.
EYE LEVEL WINDS.....SOUTHWEST AROUND 2 MPH AT IGNITION...OTHERWISE
SOUTH WINDS 2 TO 3 MPH USING AN ADJUSTMENT FACTOR OF 0.2.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH AT IGNITION...MAX 5.
MIXING HEIGHT.......1000 FT AGL AT IGNITION...OTHERWISE MAX 2000 FT
AGL.
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR /1950 M/S-M/ AT IGNITION. MAX...POOR /4020
M/S-M/.
TIME (CST) 10 AM NOON 2 PM 4 PM 6 PM 8 PM
SKY (%).........7 11 18 20 14 15
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
LAL.............1 1 1 1 1 1
TEMP............39 47 51 49 42 39
RH..............40 30 27 31 43 52
20 FT WIND......SW 7 S 8 S 9 S 9 S 7 S 7
20 FT WIND GUST.13 15 16 16 12 12
EYE LEVEL WIND..SW 3 S 4 S 4 S 4 S 3 S 3
EYE LVL WND GST.6 7 7 7 6 6
MIX HGT (KFT)...1.0 2.0 2.0 1.4 0.2 0.2
TRANSPORT WIND..SW 14 SW 12 S 14 S 13 S 8 S 8
HAINES INDEX....5 4 4 4 4 4
VRATE KT-FT/1K..12 20 24 15 1 1
VENTRATE CAT....POOR POOR POOR POOR POOR POOR
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT).
CHANCE OF PCPN......0 PERCENT.
LAL.................NO TSTMS.
TEMPERATURE.........MIN 35.
RH..................MAX 72 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH.
EYE LEVEL WINDS.....SOUTH 1 TO 2 MPH USING AN ADJUSTMENT FACTOR OF 0.2.
HAINES INDEX........2 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE
PLUME DOMINATED FIRE GROWTH.
MIXING HEIGHT.......MIN 100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 9 MPH.
SMOKE DISPERSAL.....POOR (190 M/S-M).
FORECASTER...GOSSELIN
REQUESTED BY...RON COLATSKIE
TYPE OF REQUEST...PRESCRIBED
.TAG 2002703.1/LSX
.DELDT 02/22/20
.FORMATTERVERSION 1.0.26
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