FNUS72 KJAX 221348
FWSJAX

SPOT FORECAST FOR RSSF HELICOPTER BURN...DOF
NATIONAL WEATHER SERVICE JACKSONVILLE FL
948 AM EDT THU APR 22 2010

FORECAST IS BASED ON IGNITION TIME OF 1400 EDT ON APRIL 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING FOR NORTHEAST FLORIDA IN EFFECT FROM 1 PM THIS
AFTERNOON TO 7 PM EDT THIS EVENING...

.DISCUSSION...
HIGH PRESSURE WILL BUILD ACROSS NORTH FLORIDA AND SOUTHEAST GEORGIA
THROUGH FRIDAY WITH LIGHT WINDS AND LOW AFTERNOON RELATIVE HUMIDITY
VALUES RANGING BETWEEN 25 AND 35 PERCENT.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 8 MPH IN THE
                    LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......2500-3600 FT AGL INCREASING TO NEAR 7000 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........WEST 6 TO 13 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 5 MPH LATE IN THE AFTERNOON.
DISPERSION INDEX....93.

TIME (EDT)      2 PM   4 PM
SKY (%).........5      5
WEATHER COV.....
WEATHER TYPE....NONE   NONE
TEMP............80     81
RH..............33     34
20 FT WIND......NW 8   W 7
20 FT WIND GUST.15     15
MIX HGT (FT)....6900   6900
TRANSPORT WIND..W 13   W 13
LVORI...........M      M
DISPERSION INDX.94     94

.TONIGHT...

SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......7000 FT AGL DECREASING TO 300-400 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 5 MPH SHIFTING TO THE SOUTH 1
                    TO 3 MPH IN THE EVENING...THEN SHIFTING TO THE
                    WEST AFTER MIDNIGHT.
DISPERSION INDEX....2.
LVORI...............6.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........3      5      5      8      10     14
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............78     71     65     62     59     57
RH..............39     55     69     78     84     90
20 FT WIND......SW 3   E 1    SE 1   S 2    W 2    W 1
20 FT WIND GUST.10     5      5      5      5      5
MIX HGT (FT)....6900   2900   2900   400    400    400
TRANSPORT WIND..SW 5   SE 1   SE 1   S 3    W 3    W 3
LVORI...........6      6      6      6      6      6
DISPERSION INDX.35     4      4      2      2      2

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 10 MPH IN THE
                    LATE MORNING AND AFTERNOON.
CHANCE OF PCPN......0 PERCENT.

$$
FORECASTER...SHASHY
REQUESTED BY...JIM RITSMA
TYPE OF REQUEST...PRESCRIBED
.TAG 20100422.RSSFH.01/JAX