FNUS72 KJAX 190718
FWSJAX

SPOT FORECAST FOR SV12...DEP PARKS AND REC
NATIONAL WEATHER SERVICE JACKSONVILLE FL
318 AM EDT WED JUN 19 2013

FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON JUNE 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
COOL FRONTAL BOUNDARY ACROSS SOUTH GEORGIA WILL CONTINUE TO PRESS
SOUTHWARD TODAY AND EXPECT SOUTHWEST FLOW TO CONTINUE HOT CONDITIONS
WITH SCATTERED LATE AFTERNOON AND EVENING SHOWERS AND STORMS.
THE SOUTHWEST FLOW UP TO 10 TO 15 MPH WILL CONTINUE HIGH DISPERSION
VALUES ACROSS THE SPOT LOCATION. THE ATLANTIC COAST SEA BREEZE WILL
REMAIN EAST OF THE SPOT LOCATION AND A WIND SHIFT IS NOT EXPECTED.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (35-45 PERCENT). SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON.
                    CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 92.
MIN HUMIDITY........50 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 10 MPH LATE IN THE MORNING.
LAL.................1 UNTIL 1200...THEN 2 UNTIL 1500...THEN 3.
MIXING HEIGHT.......200-2100 FT AGL INCREASING TO 5300 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 15 MPH SHIFTING TO THE WEST 15
                    TO 20 MPH EARLY IN THE AFTERNOON.
DISPERSION INDEX....4 INCREASING TO 94.

TIME (EDT)      9 AM   11 AM  1 PM   3 PM   5 PM
SKY (%).........39     41     43     44     43
WEATHER COV.....              S CHC  CHANCE CHANCE
WEATHER TYPE....NONE   NONE   TSTORM TSTORM TSTORM
TEMP............81     88     92     92     90
RH..............79     64     53     50     53
20 FT WIND......SW 5   SW 7   SW 8   SW 8   W 8
20 FT WIND GUST.10     10     15     15     15
MIX HGT (FT)....1400   2600   4400   5300   5300
TRANSPORT WIND..SW 9   SW 12  SW 14  W 15   W 15
LAL.............1      1      2      3      3

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). CHANCE OF
                    SHOWERS AND THUNDERSTORMS EARLY IN THE
                    EVENING...THEN SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE LATE EVENING AND
                    OVERNIGHT.
MIN TEMPERATURE.....AROUND 72.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH IN THE EVENING BECOMING LIGHT.
LAL.................3 UNTIL 2200...THEN 2.
MIXING HEIGHT.......3300-4300 FT AGL DECREASING TO 300 FT AGL.
MIXING WINDS........WEST 10 TO 15 MPH DECREASING TO 5 MPH EARLY IN THE MORNING.
DISPERSION INDEX....76 DECREASING TO 4.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........43     42     41     39     38     40
WEATHER COV.....CHANCE CHANCE S CHC  S CHC  S CHC  S CHC
WEATHER TYPE....TSTORM TSTORM TSTORM TSTORM TSTORM TSTORM
TEMP............88     83     79     77     75     73
RH..............56     67     78     86     91     95
20 FT WIND......W 8    SW 7   SW 5   W 2    W 2    W 1
20 FT WIND GUST.15     10     10     5      5      5
MIX HGT (FT)....4300   2300   1400   900    600    400
TRANSPORT WIND..W 15   W 13   W 12   W 10   W 8    W 2
LAL.............3      3      2      2      2      2

.THURSDAY...

SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). CHANCE OF SHOWERS
                    AND THUNDERSTORMS IN THE LATE MORNING AND
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 92.
MIN HUMIDITY........49 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH AROUND 5 MPH.
LAL.................1 UNTIL 0900...THEN 3.
MIXING HEIGHT.......100-1300 FT AGL INCREASING TO 4300-5200 FT AGL.
MIXING WINDS........SOUTHWEST 5 TO 10 MPH.
DISPERSION INDEX....4 INCREASING TO 42.

$$
FORECASTER...HESS
REQUESTED BY...DANIEL WILLIS
TYPE OF REQUEST...PRESCRIBED
.TAG 20130619.SV12_.01/JAX