FNUS72 KMFL 131251
FWSMFL

SPOT FORECAST FOR BIRDON...NPS BIG CYPRESS
NATIONAL WEATHER SERVICE MIAMI FL
851 AM EDT THU AUG 13 2009

FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON AUGUST 13.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A RIDGE OF HIGH PRESSURE REMAINS ANCHORED OVER THE
NORTH ATLANTIC THIS MORNING KEEPING SOUTH FLORIDA IN A WEAK SOUTH
SOUTHEAST FLOW. THIS WILL KEEP WINDS FAIRLY LIGHT AND DISPERSIONS
POOR TO FAIR, HOWEVER WINDS MAY BECOME ERRATIC IN AND NEAR
THUNDERSTORMS WHICH ARE EXPECTED TO BECOME SCATTERED BY AFTERNOON.

.REST OF TODAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT) THEN BECOMING PARTLY
                    SUNNY (55-65 PERCENT). SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE LATE MORNING AND
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 91.
MIN HUMIDITY........58 PERCENT.
DEWPOINT............76.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 6 TO 7 MPH IN THE
                    LATE MORNING AND AFTERNOON.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTH 6 TO 7 MPH IN THE
                    LATE MORNING AND AFTERNOON.
CHANCE OF PCPN......50 PERCENT.
LAL.................1 UNTIL 1100...THEN 3.
MIXING HEIGHT.......1800-3200 FT AGL INCREASING TO 3200-4700 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........SOUTH 5 TO 9 MPH.
DISPERSION INDEX....9 INCREASING TO 25 IN THE LATE MORNING AND
                    AFTERNOON.
LVORI...............3.

TIME (EDT)      9 AM   11 AM  1 PM   3 PM   5 PM   7 PM
SKY (%).........20     60     60     60     60     60
WEATHER COV.....       SCTTRD SCTTRD SCTTRD SCTTRD SCTTRD
WEATHER TYPE....NONE   TSTORM TSTORM TSTORM TSTORM TSTORM
CHC OF PCPN (%).50     50     50     50     50     50
TEMP............82     89     91     91     87     83
RH..............83     66     58     58     66     79
20 FT WIND......E 2    S 5    S 5    S 5    S 5    S 5
20 FT WIND GUST.5      10     10     10     10     10
EYE LEVEL WIND..E 2    S 5    S 5    S 5    S 5    S 5
EYE LVL WIND G..5      10     10     10     10     10
MIX HGT (FT)....1800   3200   3200   4700   3200   3200
MIXNG WIND......E 5    S 8    S 8    S 9    S 8    S 8
DISP IDX (LDSI).9      21     21     29     21     21
LVORI...........4      2      2      2      3      3
LAL.............1      3      3      3      3      3

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (25-35 PERCENT). SCATTERED
                    SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.
MIN TEMPERATURE.....AROUND 75.
MAX HUMIDITY........100 PERCENT.
DEWPOINT............75.
WIND (20 FT)........LIGHT WINDS.
EYE LEVEL WINDS.....LIGHT WINDS.
CHANCE OF PCPN......30 PERCENT.
LAL.................3 UNTIL 2300...THEN 1.
MIXING HEIGHT.......300-1800 FT AGL.
MIXING WINDS........EAST AROUND 5 MPH.
DISPERSION INDEX....2.
LVORI...............8.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). SCATTERED SHOWERS
                    AND THUNDERSTORMS LATE IN THE MORNING.
MAX TEMPERATURE.....AROUND 92.
MIN HUMIDITY........52 PERCENT.
DEWPOINT............77.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 7 TO 8 MPH IN THE
                    LATE MORNING AND AFTERNOON.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING EAST 7 TO 8 MPH IN THE
                    LATE MORNING AND AFTERNOON.
CHANCE OF PCPN......40 PERCENT.
LAL.................1 UNTIL 1300...THEN 3.
MIXING HEIGHT.......1900-3400 FT AGL INCREASING TO 3500-4900 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........EAST 7 TO 12 MPH.
DISPERSION INDEX....16 INCREASING TO 46 IN THE LATE MORNING AND
                    EARLY AFTERNOON...THEN DECREASING TO 34 LATE IN
                    THE AFTERNOON.
LVORI...............3.

$$
FORECASTER...TINGLER
REQUESTED BY...J TURNBO
TYPE OF REQUEST...PRESCRIBED