FNUS72 KJAX 040811
FWSJAX

SPOT FORECAST FOR IMPASSABLE BAY...USDA-FOREST SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
411 AM EDT MON JUL 4 2011

FORECAST IS BASED ON REQUEST TIME OF 0600 EDT ON JULY 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...ELEVATED FIRE WEATHER CONDITIONS EXPECTED FOR COLUMBIA COUNTY
THIS AFTERNOON...

RELATIVE HUMIDITIES ARE EXPECTED TO BOTTOM OUT AROUND 35 PERCENT
WITH BRIEF DURATIONS POSSIBLE BELOW CRITICAL LEVELS. THIS WILL
COMBINE WITH DISPERSION VALUES THAT WILL REACH INTO THE 70 TO 75
RANGE DURING THE AFTERNOON HOURS.

.DISCUSSION...HIGH PRESSURE RIDGE WILL REMAIN IN PLACE THROUGH TUESDAY
WITH VERY LITTLE THUNDERSTORM ACTIVITY EXPECTED. THE ATLANTIC COAST SEA
BREEZE FRONT WILL DOMINATE AND WILL PUSH INTO THE WILDFIRE AREA DURING
THE MID TO LATE AFTERNOON HOURS.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). PATCHY FOG EARLY
                    IN THE MORNING.
MAX TEMPERATURE.....AROUND 94.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 10 MPH LATE IN
                    THE MORNING.
LAL.................1.
MIXING HEIGHT.......300-1800 FT AGL INCREASING TO 5700-7100 FT AGL.
MIXING WINDS........EAST 5 TO 10 MPH.
DISPERSION INDEX....70.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........26     32     32     25     30     30
WEATHER COV.....PATCHY
WEATHER TYPE....FOG    NONE   NONE   NONE   NONE   NONE
TEMP............67     70     83     91     94     93
RH..............100    100    63     45     37     37
20 FT WIND......SE 1   S 2    SE 3   SE 5   E 7    E 7
20 FT WIND GUST.5      5      5      10     10     10
MIX HGT (FT)....300    1800   1800   4500   7100   7100
TRANSPORT WIND..SE 3   S 7    S 7    SE 6   E 9    E 9
LAL.............1      1      1      1      1      1

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MIN TEMPERATURE.....AROUND 73.
MAX HUMIDITY........95 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 MPH IN THE EVENING
                    BECOMING LIGHT.
LAL.................1.
MIXING HEIGHT.......5700 FT AGL DECREASING TO 300 FT AGL LATE
                    IN THE EVENING.
MIXING WINDS........SOUTH 5 TO 10 MPH.
DISPERSION INDEX....2.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........28     27     27     27     27     27
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............89     84     80     78     76     74
RH..............42     53     66     75     82     86
20 FT WIND......E 7    SE 6   SE 6   SE 5   S 3    S 2
20 FT WIND GUST.10     10     10     5      5      5
MIX HGT (FT)....5700   1700   1700   400    300    300
TRANSPORT WIND..E 8    SE 8   SE 8   SE 8   S 5    S 5
LAL.............1      1      1      1      1      1

.TUESDAY...

SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 96.
MIN HUMIDITY........40 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 MPH LATE IN
                    THE MORNING.
LAL.................1.
MIXING HEIGHT.......300 FT AGL INCREASING TO 5000 FT AGL LATE
                    IN THE MORNING...THEN INCREASING TO 7700 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........SOUTH 5 TO 10 MPH.
DISPERSION INDEX....39.

$$
FORECASTER...HESS
REQUESTED BY...PETER MYERS
TYPE OF REQUEST...WILDFIRE
.TAG 20110704.IMPAS.01/JAX