FNUS72 KJAX 121208
FWSJAX

SPOT FORECAST FOR CECIL...FL DOF
NATIONAL WEATHER SERVICE JACKSONVILLE FL
708 AM EST TUE JAN 12 2010

FORECAST IS BASED ON IGNITION TIME OF 0720 EST ON JANUARY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EST THIS
EVENING FOR LOW RELATIVE HUMIDITY...

.DISCUSSION...
A SLOWLY MODIFYING ARCTIC AIRMASS WILL REMAIN OVER THE AREA THROUGH
MID WEEK. ANOTHER AREA OF HIGH PRESSURE WILL THEN BUILD NORTH OF THE
AREA WITH HIGHER MOISTURE FOR COASTAL SECTIONS DUE TO DEVELOPING
ONSHORE FLOW. A MAJOR STORM SYSTEM WILL AFFECT THE AREA BY THE WEEKEND
WITH HIGH RAIN CHANCES AND POSSIBLY THUNDERSTORMS.

CRITICALLY LOW RH VALUES WILL CONTINUE THROUGH LATE THIS AFTERNOON.
INCREASING MOISTURE WILL ALLOW FOR MORE BORDERLINE RH VALUES FOR
WEDNESDAY AFTERNOON AND NO WATCHES WILL BE ISSUED AT THIS TIME
SINCE THE LENGTH OF TIME BELOW 35 PERCENT IS EXPECTED TO BE LESS
THAN 4 HOURS.

WINDS ARE EXPECTED TO REMAIN BELOW 15 MPH THROUGH THE PERIOD.

.TODAY...

SKY/WEATHER.........SUNNY (10-20 PERCENT). PATCHY FROST EARLY IN
                    THE MORNING.
MAX TEMPERATURE.....AROUND 53.
MIN HUMIDITY........28 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 12 MPH.
MIXING HEIGHT.......500-1800 FT AGL INCREASING TO 1800-2900 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........NORTHWEST 13 TO 18 MPH.
DISPERSION INDEX....54.

TIME (EST)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
SKY (%).........15     16     16     15     15     13
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............24     38     47     51     52     49
RH..............84     61     40     31     32     50
20 FT WIND......W 4    W 8    W 9    W 10   W 12   W 9
20 FT WIND GUST.6      10     15     15     15     10
MIX HGT (FT)....600    1800   1800   2900   2900   1800
TRANSPORT WIND..NW 16  W 18   W 18   W 17   NW 17  NW 17

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 28.
MAX HUMIDITY........84 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 8 MPH.
MIXING HEIGHT.......400-1800 FT AGL.
MIXING WINDS........NORTH 8 TO 17 MPH.
DISPERSION INDEX....4.

TIME (EST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........13     8      7      7      6      6
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............44     38     35     33     32     30
RH..............50     66     72     77     80     82
20 FT WIND......W 8    NW 6   NW 6   NW 6   NW 6   NW 6
20 FT WIND GUST.10     10     10     10     10     10
MIX HGT (FT)....1800   800    600    600    400    500
TRANSPORT WIND..NW 17  NW 15  NW 10  NW 10  N 8    N 10

.WEDNESDAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........33 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 6 MPH BECOMING LIGHT.
MIXING HEIGHT.......500-1700 FT AGL INCREASING TO 1700-2700 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........NORTHEAST 8 TO 14 MPH.
DISPERSION INDEX....27.

$$
FORECASTER...TRABERT
REQUESTED BY...PAT DEREN
TYPE OF REQUEST...PRESCRIBED
.TAG 20100112.CECIL.01/JAX