FNUS72 KJAX 230659
FWSJAX

SPOT FORECAST FOR RSSF...DOF
NATIONAL WEATHER SERVICE JACKSONVILLE FL
259 AM EDT FRI APR 23 2010

FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE WILL DOMINATE THE AREA THROUGH SATURDAY WITH MINIMUM
RELATIVE HUMIDITY VALUES REACHING CRITICAL LEVELS FOR A DURATION OF
4 TO 6 HOURS IN PORTIONS OF NORTH FLORIDA GENERALLY WEST OF HIGHWAY
301. RELATIVE HUMIDITY VALUES ARE LIKELY TO BE TOO HIGH FOR RED
FLAG CONDITIONS ON SATURDAY HOWEVER WINDS WILL BEGIN TO INCREASE
FROM A SOUTHERLY DIRECTION. SHOWERS AND THUNDERSTORMS WILL APPROACH
THE FORECAST AREA ON SUNDAY WITH SOME STORMS POSSIBLY REACHING SEVERE
LIMITS.

.TODAY...

SKY/WEATHER.........SUNNY (20-30 PERCENT).
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 6 MPH IN THE
                    AFTERNOON.
MIXING HEIGHT.......200 FT AGL INCREASING TO 2700-4400 FT AGL EARLY
                    IN THE MORNING.
MIXING WINDS........SOUTHWEST 2 TO 7 MPH INCREASING TO AROUND 12
                    MPH EARLY IN THE AFTERNOON.
DISPERSION INDEX....59.

TIME (EDT)      8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........17     17     28     36     36
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE
TEMP............57     71     79     84     84
RH..............97     62     47     39     39
20 FT WIND......SW 0   SW 1   SW 3   S 5    S 6
20 FT WIND GUST.       5      10     15     15
MIX HGT (FT)....2700   2700   3900   4400   4400
TRANSPORT WIND..SW 2   SW 2   SW 7   SW 12  SW 12

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....AROUND 59.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH.
MIXING HEIGHT.......3200-4200 FT AGL DECREASING TO 700 FT AGL LATE
                    IN THE EVENING.
MIXING WINDS........SOUTH 7 TO 12 MPH.
DISPERSION INDEX....3.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........31     36     36     27     40     40
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............82     75     70     67     64     62
RH..............43     58     71     79     85     91
20 FT WIND......S 5    S 5    S 5    S 5    S 6    S 5
20 FT WIND GUST.15     10     10     10
MIX HGT (FT)....4200   3200   3200   700    700    700
TRANSPORT WIND..S 12   S 9    S 9    S 8    S 7    S 7

$$
FORECASTER...SANDRIK
REQUESTED BY...JIM RITSMA
TYPE OF REQUEST...PRESCRIBED
.TAG 20100423.RSSF_.01/JAX