FNUS72 KMLB 201045
FWSMLB

SPOT FORECAST FOR SSR13 14A...FLORIDA PARK SERVICE
NATIONAL WEATHER SERVICE MELBOURNE FL
545 AM EST SUN DEC 20 2009

FORECAST IS BASED ON IGNITION TIME OF 1030 EST ON DECEMBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A STRONG SUBSIDENCE INVERSION WILL BUILD ACROSS THE
CENTRAL PENINSULA TODAY AND LIMIT AFTERNOON MIXING HEIGHTS TO AROUND
2000 FT...BUT NORTHWEST TRANSPORT WINDS ARE EXPECTED TO REMAIN STRONG
ENOUGH TO MAINTAIN FAIR TO GENERALLY GOOD DISPERSION CONDITIONS.
SURFACE AND TRANSPORT WINDS WILL DIMINISH THROUGH THE AFTERNOON AND
INTO TONIGHT.  HOWEVER...THE LOCAL PRESSURE GRADIENT IS EXPECTED TO
REMAIN TIGHT ENOUGH TO PREVENT THE BOUNDARY LAYER FROM DECOUPLING...
THUS PREVENTING SIGNIFICANT FOG FORMATION.

AFTERNOON RELATIVE HUMIDITIES MAY FALL BELOW 40% FOR A FEW HOURS BUT
ARE NOT EXPECTED TO REACH CRITICAL LEVELS.

.TODAY...

SKY/WEATHER........PARTLY SUNNY THEN BECOMING CONSIDERABLE
                   CLOUDINESS.
MAX TEMPERATURE....AROUND 63.
MIN HUMIDITY.......39 PERCENT.
WIND (20 FT).......NORTHWEST WINDS 10 TO 17 MPH.
CHANCE OF PCPN.....0 PERCENT.
LAL................1.
MIXING HEIGHT......300-2000 FT AGL.
TRANSPORT WINDS....NORTHWEST 18 TO 22 MPH.
DISPERSION INDEX...42.
LVORI..............1.

TIME (EST)         10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM
SKY (%)............PC  PC  PC  PC  PC  PC  PC  PC  PC  PC  PC
WEATHER COV........
WEATHER TYPE.......
TEMP...............59  62  62  63  63  63  63  60  55  53  49
RH.................51  45  41  41  39  41  45  54  57  66  68
20 FT WIND DIR.....NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT WIND SPD.....16  16  16  16  16  15  15  14  14  13  13
20 FT WIND GUST....25  25  25  25  25  20  20  20  20  20  15


.TONIGHT...

SKY/WEATHER.........CONSIDERABLE CLOUDINESS.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........78 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8 TO 14 MPH.
CHANCE OF PCPN......0 PERCENT.
LAL.................1.
MIXING HEIGHT.......700-1800 FT AGL.
TRANSPORT WINDS.....NORTH 13 TO 18 MPH.
DISPERSION INDEX....11.
LVORI...............4.


.MONDAY...

SKY/WEATHER.........CONSIDERABLE CLOUDINESS THEN BECOMING MOSTLY
                    SUNNY.
MAX TEMPERATURE.....AROUND 64.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........NORTH WINDS 7 TO 12 MPH.
CHANCE OF PCPN......0 PERCENT.
LAL.................1.
MIXING HEIGHT.......400-2000 FT AGL INCREASING TO 3500 FT AGL IN
                    THE AFTERNOON.
TRANSPORT WINDS.....NORTH 12 TO 14 MPH.
DISPERSION INDEX....48.
LVORI...............1.

$$

FORECASTER...BRAGAW
REQUESTED BY...EVAN HALL
TYPE OF REQUEST...PRESCRIBED
.TAG 20091220.SSR13.01/MLB