FNUS73 KLSX 141428
FWSLSX

SPOT FORECAST FOR LOGAN UNIT 1...MISSOURI DEPARTMENT OF CONSERVATION
NATIONAL WEATHER SERVICE ST LOUIS MO
828 AM CST THU FEB 14 2013

FORECAST IS BASED ON IGNITION TIME OF 0825 CST ON FEBRUARY 14.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE
NATIONAL WEATHER SERVICE.

.DISCUSSION...
ABOVE NORMAL TEMPERATURES AND GUSTY WEST TO NORTHWEST WINDS ARE EXPECTED
TODAY...WITH AFTERNOON HUMIDITY LEVELS DROPPING INTO THE 32-38 PERCENT
RANGE.  A BIT OF LIGHT SNOW MAY PUSH ACROSS THE AREA TONIGHT AS
A STRONG COLD FRONT SWEEPS ACROSS THE REGION...AND THIS WILL SET THE STAGE
FOR A WINDY AND COLD FRIDAY WITH HIGHS ONLY IN THE 30S TO LOW 40S WITH MINIMUM
RELATIVE HUMIDITY VALUES ONCE AGAIN AROUND 35 PERCENT.


.REST OF TODAY...

SKY/WEATHER.........PARTLY SUNNY THEN BECOMING MOSTLY CLOUDY THEN
                    BECOMING PARTLY SUNNY THEN BECOMING PARTLY
                    CLOUDY.
CWR.................10 PERCENT.
TEMPERATURE.........42 AT IGNITION...MAX 51.
RH..................73 PERCENT AT IGNITION...MIN 36 PERCENT.
WIND...EYE LEVEL....WEST-SOUTHWEST WIND AROUND 2-3 MPH AT IGNITION TIME.
                    WEST WIND AROUND 5 MPH BY EARLY THIS AFTERNOON.
                    USED ADJUSTMENT FACTOR OF 0.3 .
WIND...20 FT........WINDS WEST AT 13 MPH AT IGNITION...OTHERWISE
                    WEST WIND 9 TO 15 MPH WITH GUSTS TO AROUND 25
                    MPH DURING MID AND LATE MORNING INCREASING TO
                    12 TO 16 MPH WITH GUSTS TO AROUND 26 MPH IN THE
                    AFTERNOON.
MIXING HEIGHT.......300 FEET MIXING HEIGHT AT
                    IGNITION...4300 FT AGL AT MAX HEATING.
TRANSPORT WIND......NORTHWEST AROUND 28 MPH.
VENTILATION RATE....VERY GOOD (16324 M 2/S) AT MAX HEATING.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW IN THE LATE
                    EVENING AND OVERNIGHT.
CWR.................30 PERCENT.
TEMPERATURE.........MIN 28.
RH..................MAX 74 PERCENT.
WIND...EYE LEVEL....NORTHWEST AROUND 3 MPH USING ADJUSTMENT FACTOR OF 0.3 .
WIND...20 FT........NORTHWEST WIND 7 TO 12 MPH.
MIXING HEIGHT.......N/A.
TRANSPORT WIND......N/A.
VENTILATION RATE....N/A.

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
                    SCATTERED FLURRIES IN THE MORNING.
CWR.................10 PERCENT.
TEMPERATURE.........MAX 37.
RH..................MIN 31 PERCENT.
WIND...EYE LEVEL....NORTHWEST 4-5 MPH USING ADJUSTMENT FACTOR OF 0.3 .
WIND...20 FT........NORTHWEST WIND 10 TO 15 MPH WITH GUSTS TO
                    AROUND 24 MPH.
MIXING HEIGHT.......5300 FT AGL AT MAX HEATING.
TRANSPORT WIND......NORTHWEST AROUND 17 MPH.
VENTILATION RATE....GOOD (12490 M 2/S) AT MAX HEATING.

$$

FORECASTER...GOSSELIN
REQUESTED BY...GARY CALVERT
TYPE OF REQUEST...PRESCRIBED
.TAG 20130214.LOGAN.01/LSX