FNUS72 KJAX 251235
FWSJAX

SPOT FORECAST FOR LONGLEAF...FLORIDA FOREST SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
835 AM EDT THU APR 25 2013

FORECAST IS BASED ON IGNITION TIME OF 0930 EDT ON APRIL 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAK COLD FRONT WILL MOVE THROUGH THE AREA THIS EVENING...WITH
ONLY ISOLATED SHOWERS AND THUNDERSTORMS DEVELOPING ALONG AND AHEAD
OF THE FRONT LATE THIS AFTERNOON AND EARLY THIS EVENING. RELATIVE
HUMIDITY VALUES WILL REMAIN ABOVE CRITICAL THRESHOLDS AND WIND
SPEEDS WILL REMAIN LESS THAN 10 MPH. THE FRONT WILL STALL OVER
NORTHEAST FLORIDA ON FRIDAY AS HIGH PRESSURE BUILDS TO THE NORTH
OF OUR REGION. NORTHEAST WINDS WILL INCREASE ON FRIDAY
MORNING...WITH BREEZY CONDITIONS EXPECTED DURING THE AFTERNOON
HOURS. RELATIVE HUMIDITY VALUES ARE EXPECTED TO REMAIN ABOVE
CRITICAL THRESHOLDS ON FRIDAY AFTERNOON.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS LATE IN THE
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........45 PERCENT.
WIND (20 FT)........LIGHT WINDS THIS MORNING...BECOMING WEST TO NORTHWEST
                    5 TO 10 MPH IN THE LATE MORNING AND AFTERNOON.
LAL.................1 UNTIL 1600...THEN 2.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 4500 FT AGL THIS AFTERNOON.
MIXING WINDS........NORTHWEST 5 TO 10 MPH.
DISPERSION INDEX....15 INCREASING TO INCREASING TO 45 IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
LVORI...............6.

TIME (EDT)      9 AM   11 AM  1 PM   3 PM   5 PM
SKY (%).........78     73     58     64     77
WEATHER COV.....                     S CHC  S CHC
WEATHER TYPE....NONE   NONE   NONE   TSTORM TSTORM
TEMP............71     78     82     82     81
RH..............82     63     51     45     50
20 FT WIND......W 5    W 7    W 7    W 8    NW 10
20 FT WIND GUST.10     10     15     15     15
MIX HGT (FT)....2000   3200   4500   4400   4200
TRANSPORT WIND..W 6    W 9    W 8    W 9    NW 10
LVORI...........4      2      1      2      2
DISPERSION INDX.15     33     45     45     40
CHC OF PCPN (%).10     10     10     20     20
LAL.............1      1      1      2      2

.TONIGHT...

SKY/WEATHER.........CLOUDY (85-95 PERCENT). SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....AROUND 58.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH IN THE EVENING
                    BECOMING LIGHT.
LAL.................2 UNTIL 2300...THEN 1.
MIXING HEIGHT.......3500 FT AGL DECREASING TO 200 FT AGL
                    OVERNIGHT.
MIXING WINDS........NORTHEAST 5 TO 12 MPH.
DISPERSION INDEX....30 DECREASING TO 5.
CHANCE OF PCPN......20 PERCENT.
LVORI...............5.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........77     90     83     86     99     99
WEATHER COV.....S CHC  S CHC  S CHC
WEATHER TYPE....TSTORM TSTORM TSTORM NONE   NONE   NONE
TEMP............79     73     67     64     62     60
RH..............51     66     80     87     93     96
20 FT WIND......NW 8   N 7    NE 5   NE 5   NE 6   NE 5
20 FT WIND GUST.10     10     10     10     10     10
MIX HGT (FT)....3500   2500   1000   500    300    200
TRANSPORT WIND..NW 10  N 12   N 9    NE 7   NE 6   NE 5
LVORI...........2      3      4      5      6      7
DISPERSION INDX.30     10     8      6      5      5
CHC OF PCPN (%).20     20     10     10     0      0
LAL.............2      2      2      1      1      1

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........40 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 12 MPH.
LAL.................1.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 5000 FT AGL.
MIXING WINDS........NORTHEAST 10 TO 15 MPH.
DISPERSION INDEX....10 INCREASING TO 40.
CHANCE OF PCPN......0 PERCENT.
LVORI...............5.

$$
FORECASTER...NELSON
REQUESTED BY...PAT DEREN
TYPE OF REQUEST...PRESCRIBED
.TAG 20130425.LONGL.01/JAX