FNUS74 KMOB 171405
FWSMOB

SPOT FORECAST FOR 502A...E.N.R.
NATIONAL WEATHER SERVICE MOBILE AL
805 AM CST TUE FEB 17 2009

FORECAST IS BASED ON IGNITION TIME OF 0820 CST ON FEBRUARY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...BETTER CLOUDS AND HIGHER HUMIDITIES CAN BE EXPECTED TODAY
AND WEDNESDAY IN RESPONSE TO A DEVELOPING COLD FRONT APPROACHING
FROM THE WEST. FOR TONIGHT AND WEDNESDAY SHOWERS AND THUNDERSTORMS
WILL BECOME BETTER DEVELOPED IN ADVANCE OF THE COLD FRONT WITH A FEW
STORMS POSSIBLY BECOMING STRONG TO SEVERE BY WEDNESDAY AFTERNOON
AND EARLY WEDNESDAY EVENING. A STRONG SOUTHERLY FLOW AHEAD OF THE
FRONT WILL ALSO GIVE WAY TO HIGHER THAN NORMAL DISPERSION INDICES
THROUGH WEDNESDAY EVENING...CONTINUING IN THE WAKE OF THE FRONT
MOSTLY ON THURSDAY AS A MODERATE TO STRONG NORTHERLY FLOW DEVELOPS.
AFTERNOON RELATIVE HUMIDITIES WILL HAVE TO BE CLOSELY MONITORED IN
THE WAKE OF THE FRONT THURSDAY THROUGH SATURDAY.


.TODAY...


TIME (CST)      8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........49     49     54     54     54
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE
TEMP............49     56     57     58     57
RH..............52     45     45     48     55
20 FT WIND DIR..E      E      E      SE     SE
20 FT WIND SPD..7      7      8      8      10
MIX HGT (FT)....1100   2100   2900   2200   1400
TRANSP WIND DIR.E      E      E      SE     SE
TRANSP WIND SPD.13     13     13     14     16
DISPERSION......17     32     30     29     24
LVORI...........2      1      2      2      2
CWR.............0      0      10     10     10

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). SLIGHT CHANCE OF
                    RAIN SHOWERS.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........83 PERCENT.
WIND (20 FT)........SOUTH WINDS 13 TO 16 MPH.
MIXING HEIGHT.......400-500 FT AGL
MIXING WINDS........SOUTH 17 TO 21 MPH INCREASING TO 22 TO 23 MPH
                    AFTER MIDNIGHT.
DISPERSION INDEX....19.
LVORI...............3.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF
                    THUNDERSTORMS AND SHOWERS.
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........77 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 16 TO 20 MPH WITH GUSTS TO
                    AROUND 30 MPH. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS.
MIXING HEIGHT.......2300-2500 FT AGL
MIXING WINDS........SOUTHWEST 23 TO 26 MPH INCREASING TO 25 TO 28
                    MPH LATE IN THE MORNING.
DISPERSION INDEX....59 EARLY IN THE AFTERNOON DECREASING TO 34
LVORI...............3 INCREASING TO 4 IN THE LATE MORNING AND
                    AFTERNOON.

$$
FORECASTER...MOB FORECASTER
REQUESTED BY...JERRY COON
TYPE OF REQUEST...PRESCRIBED
.TAG 20090217.502A_.02/MOB