FNUS71 KLWX 041516
FWSLWX

SPOT FORECAST FOR ANTIETAM ILLUMINATION...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1016 AM EST FRI DEC 4 2009

FORECAST IS BASED ON IGNITION TIME OF 0954 EST ON DECEMBER 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A COASTAL LOW PRESSURE SYSTEM WILL MOVE UP THE MID ATLANTIC SEABOARD SATURDAY.
PRECIPITATION WILL DEVELOP SATURDAY MORNING...LIKELY AS A BRIEF PERIOD OF RAIN...
BEFORE TRANISTIONING TO SNOW. SNOW WILL CONTINUE THROUGH MUCH OF THE DAY. ONE TO
TWO INCHES OF ACCUMULATION WILL BE POSSIBLE. HIGH PRESSURE AND DRIER CONDITIONS
ARE EXPECTED TO BUILD INTO THE AREA SATURDAY NIGHT.

.SATURDAY...

SKY/WEATHER.........CLOUDY (90-100 PERCENT). A CHANCE OF SNOW EARLY
                    IN THE MORNING...THEN SNOW LIKELY IN THE LATE
                    MORNING AND AFTERNOON.
MAX TEMPERATURE.....AROUND 37.
MIN HUMIDITY........64 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 10 MPH.
CWR.................30 PERCENT...INCREASING TO 70 PERCENT IN THE
                    MORNING...THEN DECREASING TO 60 PERCENT.

TIME (EST)          9 AM   11 AM  1 PM   3 PM   5 PM
SKY (%).........100    100    100    100    100
WEATHER COV.....LIKELY LIKELY LIKELY LIKELY LIKELY
WEATHER TYPE....SNOW   SNOW   SNOW   SNOW   SNOW
TEMP............36     36     37     36     33
RH..............75     75     70     69     78
20 FT WIND......N 5    N 5    N 5    N 6    NW 8
20 FT WIND GUST.10     10     10     10     15
CWR.............70     70     60     60     60

.SATURDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SNOW LIKELY
                    EARLY IN THE EVENING...THEN A SLIGHT CHANCE OF
                    SNOW LATE IN THE EVENING.
MIN TEMPERATURE.....AROUND 24.
MAX HUMIDITY........88 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 11 MPH.
CWR.................60 PERCENT...DECREASING TO 10 PERCENT.

TIME (EST)          6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........100    80     80     80     71     71
WEATHER COV.....LIKELY LIKELY S CHC  S CHC
WEATHER TYPE....SNOW   SNOW   SNOW   SNOW   NONE   NONE
TEMP............32     30     29     28     27     27
RH..............81     85     85     85     85     81
20 FT WIND......NW 9   NW 8   NW 6   NW 6   NW 6   NW 5
20 FT WIND GUST.15     15     10     10     10     10
CWR.............60     60     20     20     10     10

$$
FORECASTER...KONARIK
REQUESTED BY...ED WENSCHHOF
TYPE OF REQUEST...PRESCRIBED
.TAG 20091205.ANTIE.01/LWX