FNUS72 KJAX 191338
FWSJAX

SPOT FORECAST FOR CECIL...DOF
NATIONAL WEATHER SERVICE JACKSONVILLE FL
838 AM EST FRI FEB 19 2010

FORECAST IS BASED ON IGNITION TIME OF 1000 EST ON FEBRUARY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...

.DISCUSSION...DRY AIR WILL REMAIN IN PLACE AGAIN TODAY RESULTING
IN LONG DURATIONS OF CRITICALLY LOW RELATIVE HUMIDITY AREA-WIDE.
WINDS WILL BE LIGHT TODAY AS HIGH PRESSURE BUILDS INTO THE REGION.
A SEABREEZE MAY DEVELOP NEAR THE COAST DURING THE AFTERNOON.

SIMILAR CONDITIONS ARE EXPECTED SATURDAY FOR INLAND AREAS...BUT AN
ONSHORE FLOW WILL BRING MORE MOISTURE NEAR THE COAST AND EXPECT A
SHORTER DURATION OF NEAR CRITICAL RH VALUES. BY SUNDAY AN EAST TO
SOUTHEASTERLY FLOW WILL INCREASE MOISTURE FARTHER INLAND AND RED
FLAG CONDITIONS ARE NOT EXPECTED.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (25-35 PERCENT). AREAS OF FROST
                    EARLY IN THE MORNING.
MAX TEMPERATURE.....AROUND 64.
MIN HUMIDITY........26 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST TO NORTHWEST 5 TO 10 MPH.
MIXING HEIGHT.......500 FT AGL INCREASING TO 2300-3500 FT AGL IN THE AFTERNOON.
MIXING WINDS........NORTHWEST 10 TO 15 MPH.
DISPERSION INDEX....34.

TIME (EST)      10 AM  NOON   2 PM   4 PM
SKY (%).........25     25     27     27
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE
TEMP............48     58     62     62
RH..............52     34     28     29
20 FT WIND......NW 5   NW 3   NW 5   W 7
20 FT WIND GUST.7      5      8      11
MIX HGT (FT)....2100   2100   3500   2300
TRANSPORT WIND..NW 9   NW 9   W 8    NW 6

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). PATCHY FROST
                    AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 35.
MAX HUMIDITY........86 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH BECOMING LIGHT.
MIXING HEIGHT.......2300 FT AGL DECREASING TO 300-500 FT AGL AFTER MIDNIGHT.
MIXING WINDS........NORTH 5 TO 10 MPH.
DISPERSION INDEX....1.

TIME (EST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........27     25     23     23     18     9
WEATHER COV.....                            PATCHY PATCHY
WEATHER TYPE....NONE   NONE   NONE   NONE   FROST  FROST
TEMP............56     48     45     42     40     38
RH..............41     58     61     72     80     84
20 FT WIND......SW 5   SW 2   W 2    W 2    W 1    W 1
20 FT WIND GUST.8      3      3      3      2      2
MIX HGT (FT)....2300   900    600    600    300    500
TRANSPORT WIND..NW 6   NW 5   NW 3   NW 3   N 2    N 3

.SATURDAY...

SKY/WEATHER.........SUNNY (0-10 PERCENT). PATCHY FROST EARLY IN THE
                    MORNING.
MAX TEMPERATURE.....AROUND 66.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST 5 TO 10 MPH.
MIXING HEIGHT.......500 FT AGL INCREASING TO 2700-3600 FT AGL IN THE AFTERNOON.
MIXING WINDS........NORTH 5 TO 10 MPH.
DISPERSION INDEX....30.

$$
FORECASTER...HESS
REQUESTED BY...KEITH CUMMINGS
TYPE OF REQUEST...PRESCRIBED
.TAG 20100219.CECIL.01/JAX