FNUS72 KJAX 221401
FWSJAX

SPOT FORECAST FOR RSSF HELICOPTER BURN...DOF
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1001 AM EDT THU APR 22 2010

FORECAST IS BASED ON IGNITION TIME OF 1005 EDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FOR NORTHEAST FLORIDA 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 (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 8 MPH.
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.
CHANCE OF PCPN......0 PERCENT.

TIME (EDT)      10 AM  NOON   2 PM   4 PM
SKY (%).........10     10     10     10
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE
TEMP............71     76     80     81
RH..............52     40     33     31
20 FT WIND......NW 5   NW 7   NW 8   W 7
20 FT WIND GUST.15     15     15     15
MIX HGT (FT)....2500   3600   6900   6900
TRANSPORT WIND..NW 6   NW 12  W 13   W 13
DISPERSION INDX.12     50     94     94
CHC OF PCPN (%).0      0      0      0

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (5-15 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.
CHANCE OF PCPN......0 PERCENT.
LVORI...............6.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........3      5      5      8      8      8
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............78     71     65     62     59     57
RH..............36     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)....7100   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
CHC OF PCPN (%).0      0      0      0      0      0

.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.

$$
FORECASTER...SHASHY
REQUESTED BY...JIM RITSMA
TYPE OF REQUEST...PRESCRIBED
.TAG 20100422.RSSFH.02/JAX