FNUS72 KJAX 201317
FWSJAX

SPOT FORECAST FOR 4CSF...DOF
NATIONAL WEATHER SERVICE JACKSONVILLE FL
817 AM EST FRI FEB 20 2009

FORECAST IS BASED ON IGNITION TIME OF 0815 EST ON FEBRUARY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...
...FIRE WEATHER WATCH IN EFFECT SATURDAY AFTERNOON...

.DISCUSSION...HIGH PRESSURE WILL BUILD INTO THE AREA BRINGING
IN A VERY DRY AIRMASS. RED FLAG CONDITIONS ARE EXPECTED AS RH'S
FALL WELL BELOW CRITICAL VALUES. THE DRY AIRMASS WILL MODERATE
SLIGHTLY ON SATURDAY WITH MINIMUM RH NEAR 28 PERCENT. ANOTHER
SURGE OF COOL AND DRY AIR WILL MOVE IN SUNDAY WITH RED FLAG
CONDITIONS POSSIBLE DUE TO LOW RH AND BREEZY WINDS. SUSTAINED
WINDS ARE EXPECTED TO REMAIN BELOW 15 MPH THROUGH SATURDAY BUT MAY
INCREASE TO NEAR 15 MPH WITH GUSTS OVER 25 MPH SUNDAY.

.TODAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........19 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 9 MPH. GUSTS UP TO 20 MPH
                    LATE IN THE MORNING.
MIXING HEIGHT.......700-2200 FT AGL INCREASING TO 2200-3500 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........NORTHWEST 9 TO 16 MPH.
DISPERSION INDEX....51.

TIME (EST)      8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........1      0      0      0      0
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE
TEMP............39     49     53     54     54
RH..............45     32     23     22     28
20 FT WIND......NW 8   NW 9   NW 9   NW 9   NW 8
20 FT WIND GUST.15     20     20     15     10
MIX HGT (FT)....900    2200   3500   3500   2200
TRANSPORT WIND..N 16   NW 16  NW 16  NW 14  NW 9

.TONIGHT...

SKY/WEATHER.........CLEAR (0-10 PERCENT). PATCHY FROST EARLY IN THE
                    MORNING.
MIN TEMPERATURE.....AROUND 27.
MAX HUMIDITY........75 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......300-2200 FT AGL.
MIXING WINDS........NORTH 3 TO 9 MPH.
DISPERSION INDEX....1.

TIME (EST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........0      0      0      0      8      5
WEATHER COV.....                                   PATCHY
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   FROST
TEMP............48     40     37     34     32     30
RH..............34     47     53     57     62     67
20 FT WIND......NW 3   NW 1   NW 2   NW 2   NW 2   N 2
20 FT WIND GUST.5      5      5      5      5      5
MIX HGT (FT)....2200   800    500    500    300    300
TRANSPORT WIND..NW 9   NW 5   N 3    N 3    N 3    N 6

$$
FORECASTER...TRABERT
REQUESTED BY...MIKE WORK
TYPE OF REQUEST...PRESCRIBED
.TAG 20090220.4CSF_.01/JAX