FNUS72 KCAE 121935
FWSCAE

SPOT FORECAST FOR RCW4...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE COLUMBIA SC
335 PM EDT TUE APR 12 2011

FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON APRIL 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
DRYING WILL OCCUR BEHIND A COLD FRONT TONIGHT. THE DRYING PLUS WIND
SHOULD HELP PREVENT FOG DURING THE EARLY MORNING HOURS WEDNESDAY.
THE COMBINATION OF LOW PRESSURE OVER THE MIDDLE ATLANTIC STATES PLUS
A RIDGE IN THE MISSISSIPPI RIVER VALLEY WILL RESULT IN WEST TO NORTHWEST WINDS
TONIGHT AND WEDNESDAY. THE WINDS WILL BECOME LIGHT AS THE RIDGE GETS CLOSER
TO THE AREA AND THE PRESSURE GRADIENT RELAXES WEDNESDAY NIGHT. THE RIDGE WILL
MOVE OFF THE COAST THURSDAY AFTERNOON. WINDS THURSDAY WILL BE NORTHEAST
BUT VEER TO SOUTHEAST AT SPEEDS MAINLY LESS THAN 10 MPH THURSDAY.

.TONIGHT...
TIME (EDT)          6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%)..............67  64  63  63  63  54  37  19  10  5   5   5
WEATHER COV..........
WEATHER TYPE.........
TEMP.................75  72  68  63  60  58  56  55  53  52  50  49
RH...................40  42  49  58  62  67  69  69  71  74  77  80
20 FT WIND DIR.......W   W   W   W   W   W   W   NW  NW  W   W   W
20 FT WIND DIR.......260 270 270 280 280 280 290 300 300 290 280 270
20 FT WIND SPD.......11  10  7   6   5   3   3   3   2   2   2   2
20 FT WIND GUST......20  20  15  10  10  5   5   5   5   5   5   5
MIX HGT (KFT)........5.1 3.2 1.6 1.0 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6
TRANSP WIND DIR......W   W   W   W   W   W   W   NW  NW  NW  NW  NW
TRANSP WIND SPD......26  25  16  15  13  12  10  9   8   7   7   7

.WEDNESDAY...
TIME (EDT)          6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%)..............4   4   4   1   2   2   3   3   3   3   4   5
WEATHER COV..........
WEATHER TYPE.........
TEMP.................49  48  50  55  61  66  69  71  73  75  76  76
RH...................80  83  77  61  48  40  36  34  31  29  28  28
20 FT WIND DIR.......W   W   NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT WIND DIR.......280 290 300 300 310 310 310 300 300 300 300 300
20 FT WIND SPD.......2   2   3   4   5   5   6   5   5   5   6   5
20 FT WIND GUST......5   5   5   5   10  10  10  10  10  10  10  10
MIX HGT (KFT)........1.0 1.7 2.4 2.9 3.3 3.6 3.9 4.0 4.1 4.0 3.8 3.5
TRANSP WIND DIR......W   W   W   W   NW  NW  NW  NW  NW  NW  NW  NW
TRANSP WIND SPD......7   7   7   8   9   9   10  12  12  10  9   8

$$
FORECASTER...LINTON
REQUESTED BY...SASHA ERNST
TYPE OF REQUEST...PRESCRIBED
.TAG 20110413.RCW4_.01/CAE