FNUS73 KLSX 201200
FWSLSX

SPOT FORECAST FOR MARKTWAIN LAKE...CORPS OF ENGINEERS
NATIONAL WEATHER SERVICE ST LOUIS MO
700 AM CDT TUE APR 20 2010

FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE
NATIONAL WEATHER SERVICE.

.DISCUSSION...
A WEAK RIDGE OF HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER
PATTERN TODAY AND TONIGHT WITH LIGHT WINDS AND DRY CONDITIONS. MINIMUM
RELATIVE HUMIDITY VALUES OF 25 TO 30 PERCENT ARE EXPECTED THIS AFTERNOON.
UPPER LEVEL DISTURBANCES WILL BRING SCATTERED SHOWERS AND A FEW
THUNDERSTORMS TO THE AREA WEDNESDAY AFTERNOON AND NIGHT.


.TODAY...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................10 PERCENT.
LAL.................NO TSTMS.
                    TEMPERATURE.........51 AT IGNITION...MAX 70.
                    MIN HUMIDITY........59 PERCENT AT IGNITION...MIN 28 PERCENT.
WIND...EYE LEVEL....LIGHT WIND AT 3 MPH OR LESS.
WIND...20 FT........WINDS NORTH AT 4 MPH AT IGNITION...OTHERWISE
                    LIGHT WIND UNTIL LATE MORNING BECOMING NORTH
                    AROUND 5 MPH IN THE LATE MORNING AND EARLY
                    AFTERNOON...THEN BECOMING LIGHT DURING MID AND
                    LATE AFTERNOON.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000 FT AT IGNITION...
                    7500 FT AGL AT MAX HEATING.
TRANSPORT WINDS.....NORTH AROUND 8 MPH.
VENTILATION RATE....FAIR (8264 M 2/S) AT MAX HEATING.

$$

FORECASTER...GKS
REQUESTED BY...ALLEN MEHRER
TYPE OF REQUEST...PRESCRIBED
.TAG 20100420.MARKT.01/LSX