FNUS72 KJAX 250820
FWSJAX

SPOT FORECAST FOR SV 15 SILVER RIVER...FLORIDA PARK SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
420 AM EDT WED APR 25 2012

FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON APRIL 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS
EVENING FOR GUSTY WINDS...LOW HUMIDITY...HIGH DISPERSION AND HIGH
ERC VALUES FOR ALL OF NORTHEAST FLORIDA...

...FIRE WEATHER WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
EARLY THURSDAY EVENING FOR GUSTY WINDS...LOW HUMIDITY...HIGH
DISPERSION AND HIGH ERC VALUES FOR ALL OF NORTHEAST FLORIDA...

.DISCUSSION...
HIGH PRESSURE WILL REMAIN SOUTH OF THE REGION THROUGH THURSDAY.
THIS WILL CONTINUE TO PROMOTE RED FLAG CONDITIONS WITH GUSTY
SOUTHWEST WINDS AROUND 15 MPH WITH RELATIVE HUMIDITY LEVELS FALLING
BELOW CRITICAL VALUES EACH AFTERNOON. HIGH DISPERSION AND ERC VALUES
WILL CONTRIBUTE TO RED FLAG WARNINGS.

.TODAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 12 MPH IN
                    THE LATE MORNING AND AFTERNOON.
LAL.................1.
MIXING HEIGHT.......1000-2300 FT AGL INCREASING TO 5900-6300 FT
                    AGL.
MIXING WINDS........SOUTHWEST 6 TO 12 MPH.
DISPERSION INDEX....53.

TIME (EDT)      10 AM  NOON   2 PM   4 PM
SKY (%).........9      14     17     19
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE
TEMP............66     77     79     80
RH..............49     35     32     31
20 FT WIND......SW 5   SW 7   SW 9   SW 10
20 FT WIND GUST.       10     15     15
MIX HGT (FT)....3800   5600   6100   6300
TRANSPORT WIND..W 6    W 7    SW 9   SW 12
DISPERSION INDX.27     45     41     51
LAL.............1      1      1      1

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....AROUND 55.
MAX HUMIDITY........93 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH IN THE EVENING
                    BECOMING LIGHT.
LAL.................1.
MIXING HEIGHT.......4300-5700 FT AGL DECREASING TO 800-1400 FT AGL.
MIXING WINDS........SOUTHWEST 8 TO 16 MPH.
DISPERSION INDEX....6.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........17     17     15     13     13     13
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............79     73     67     62     59     57
RH..............35     45     59     73     82     86
20 FT WIND......SW 10  W 8    SW 5   SW 3   SW 2   SW 2
20 FT WIND GUST.15     15     10     5      5      5
MIX HGT (FT)....5700   4300   2800   1700   1100   900
TRANSPORT WIND..SW 13  SW 13  SW 15  W 15   W 14   SW 9
DISPERSION INDX.55     10     8      8      7      5
LAL.............1      1      1      1      1      1

.THURSDAY...

SKY/WEATHER.........SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........34 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 6 TO 14 MPH IN
                    THE LATE MORNING AND AFTERNOON.
LAL.................1.
MIXING HEIGHT.......500-1500 FT AGL INCREASING TO 5100-6000 FT AGL.
MIXING WINDS........WEST 8 TO 16 MPH.
DISPERSION INDEX....65.

$$
FORECASTER...HESS
REQUESTED BY...SALLY LIEB
TYPE OF REQUEST...PRESCRIBED
.TAG 20120425.SV15S.01/JAX