FNUS71 KLWX 031807 FWSLWX SPOT FORECAST FOR JARMAN GAP...USDI - NPS NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 207 PM EDT TUE APR 3 2012 FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON APRIL 04. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL MOVE OFFSHORE LATE THIS EVENING. A COLD FRONT WILL CROSS THE MID ATLANTIC ON WEDNESDAY...BRINGING A CHANCE OF SHOWERS AND THUNDERSTORMS. HIGH PRESSURE RETURNS FOR WEDNESDAY NIGHT THROUGH THURSDAY. DRY CONDITIONS ARE EXPECTED THURSDAY AND NORTHEAST WINDS SHOULD REMAIN BELOW 10 KNOTS. THE RELATIVE HUMIDITY WILL DROP TO BETWEEN 40 AND 45 PERCENT. .WEDNESDAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). A SLIGHT CHANCE OF SHOWERS EARLY IN THE MORNING. A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 74. MIN HUMIDITY........49 PERCENT. WIND (20 FT)........WEST WINDS AROUND 5 MPH EARLY IN THE MORNING...BECOMING LIGHT AND VARIABLE...THEN BECOMING NORTHWEST 5 TO 6 MPH IN THE LATE MORNING AND AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. CWR.................20 PERCENT...INCREASING TO 50 PERCENT. MIXING HEIGHT.......0-1700 FT AGL...INCREASING TO 2700-4100 FT AGL LATE IN THE MORNING...THEN INCREASING TO 4700-6100 FT AGL IN THE AFTERNOON...DECREASING TO 3600 FT AGL LATE. TRANSPORT WINDS.....WEST 5 TO 12 MPH...INCREASING TO 15 TO 18 MPH LATE IN THE MORNING. TIME (EDT) 11 AM 1 PM 3 PM 5 PM SKY (%).........75 75 69 69 WEATHER COV..... CHANCE CHANCE CHANCE WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR TEMP............64 66 68 67 RH..............61 55 49 51 20 FT WIND......W 5 W 5 W 5 NW 5 20 FT WIND GUST.10 10 15 15 CWR.............10 50 50 50 .WEDNESDAY NIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT)...THEN BECOMING PARTLY CLOUDY (35-45 PERCENT). A CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING...THEN A SLIGHT CHANCE OF SHOWERS EARLY IN THE EVENING. MIN TEMPERATURE.....AROUND 44. MAX HUMIDITY........80 PERCENT. WIND (20 FT)........NORTH WINDS 6 TO 10 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE EVENING. CWR.................50 PERCENT...DECREASING TO 10 PERCENT. MIXING HEIGHT.......1100-2900 FT AGL...DECREASING TO 100-600 FT AGL IN THE LATE EVENING AND OVERNIGHT. TRANSPORT WINDS.....NORTH 7 TO 16 MPH...DECREASING TO AROUND 6 MPH LATE. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........69 64 64 64 40 40 WEATHER COV.....CHANCE S CHC S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR NONE NONE TEMP............65 61 56 52 50 49 RH..............55 70 77 80 77 77 20 FT WIND......NW 5 N 5 N 7 N 8 N 7 N 6 20 FT WIND GUST.15 10 15 15 15 10 CWR.............50 20 20 20 10 10 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). MAX TEMPERATURE.....AROUND 56. MIN HUMIDITY........43 PERCENT. WIND (20 FT)........NORTHEAST WINDS 5 TO 7 MPH UNTIL LATE AFTERNOON...BECOMING LIGHT AND VARIABLE. CWR.................10 PERCENT. MIXING HEIGHT.......600-1900 FT AGL...INCREASING TO 4800-6300 FT AGL. TRANSPORT WINDS.....NORTH 3 TO 12 MPH...DECREASING TO AROUND 1 MPH LATE. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........40 47 47 47 55 55 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............44 45 48 51 54 56 RH..............77 73 61 52 45 43 20 FT WIND......N 6 NE 5 NE 5 NE 5 E 3 E 2 20 FT WIND GUST.10 10 10 10 5 5 CWR.............10 10 10 10 10 10 $$ FORECASTER...LASORSA REQUESTED BY...JEFF KOENIG TYPE OF REQUEST...PRESCRIBED .TAG 20120404.JARMA.01/LWX