FNUS74 KMOB 201206
FWSMOB

SPOT FORECAST FOR COMPARTMENT   49...U.S.F.S
NATIONAL WEATHER SERVICE MOBILE AL
706 AM CDT WED MAY 20 2009

FORECAST IS BASED ON IGNITION TIME OF 0830 CDT ON MAY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A LOW PRESSURE SYSTEM PASSING SOUTH OF THE AREA TODAY AND
TONIGHT WILL REMAIN OVER THE CENTRAL GULF THROUGH FRIDAY BEFORE LIFTING
NORTH INTO THE CENTRAL GULF COAST REGION BY LATE SATURDAY OR EARLY
SUNDAY. THE STRONG WIND FLOW ASSOCIATED WITH THIS LOW PRESSURE WILL RESULT
IN A STRONG FLOW IN THE MIXING LAYER. THIS WILL ALSO CREATE VERY HIGH
DAYTIME DISPERSIONS THROUGH THE REMAINDER OF THE WEEK. NORTHEASTERLY MIXING
LAYER WINDS WILL BECOME MORE EASTERLY FRIDAY AS THE SYSTEM MOVES SOUTHWEST
OF THE AREA.

.TODAY...
TIME (CDT)      8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).........57     57     57     80     80
WEATHER COV.....S CHC  S CHC  S CHC  CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TEMP............60     67     70     72     73
RH..............86     70     68     67     66
20 FT WIND DIR..NE     NE     NE     NE     E
20 FT WIND SPD..15     15     17     18     18
MIX HGT (FT)....1900   3400   4800   5900   6200
MIX HGT (M).....580    1040   1460   1800   1890
TRANSP WIND DIR.NE     NE     E      E      E
TRANSP WIND SPD.25     26     30     32     33
TRANS SPD (M/S).11     12     13     14     15
DISPERSION......47     67     89     105    112
LVORI...........4      3      1      1      1
CWR.............20     20     20     30     30

.TONIGHT...
TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........80     96     96     96     74     74
WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TEMP............72     69     65     65     65     65
RH..............71     79     89     89     88     89
20 FT WIND DIR..E      E      E      E      E      E
20 FT WIND SPD..17     14     14     12     10     9
MIX HGT (FT)....5000   3400   2000   1900   2000   2100
MIX HGT (M).....1520   1040   610    580    610    640
TRANSP WIND DIR.E      E      E      E      E      E
TRANSP WIND SPD.31     31     33     30     25     21
TRANS SPD (M/S).14     14     15     13     11     9
DISPERSION......96     42     44     33     34     28
LVORI...........3      3      4      4      4      4
CWR.............30     30     30     30     30     30

$$
FORECASTER...MOB FORECASTER
REQUESTED BY...DFMO
TYPE OF REQUEST...PRESCRIBED
.TAG 20090520.COMPA.01/MOB