Heavy rain from the central Gulf Coast to Southeast U.S. this weekend

Heavy rain is expected from eastern Texas across the Lower Miss. Valley to the Southeast U.S. this weekend. This rain could lead to flash flooding. Meanwhile, heavy rain will also spread into the Northwest U.S., with heavy snow in the higher elevations of the Cascades and northern Rockies. Snow and hazardous travel conditions will impact the upper Midwest and parts of the Great Lake States.
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Last Update: 312 PM EST SUN DEC 4 2016

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Philadelphia, PA Local Forecast Office

26NM S New York NY

Marine Zone Forecast


Synopsis: HIGH PRESSURE WILL RETREAT NORTHWARD TONIGHT. A WEAK DISTURBANCE WILL AFFECT THE AREA TONIGHT INTO EARLY MONDAY, BEFORE HIGH PRESSURE BRIEFLY BUILDS IN AGAIN MONDAY NIGHT. ON TUESDAY, AND AREA OF LOW PRESSURE WILL SPLIT AS IT MOVES ACROSS THE APPALACHIANS TO OUR SOUTH. THE INTERIOR LOW WILL WEAKEN TUESDAY NIGHT, WHILE THE COASTAL LOW STRENGTHENS AS IT LIFTS NORTHWARD OVERNIGHT. ANOTHER LOW MOVING ACROSS SOUTH CENTRAL CANADA MAY DRAG A WEAKENING FRONTAL BOUNDARY ACROSS THE AREA LATE TUESDAY NIGHT INTO EARLY WEDNESDAY. THESE LOWS ARE FORECAST TO WEAKEN THROUGH THURSDAY AS ANOTHER LOW DEVELOPS NEAR THE MID ATLANTIC. AS THIS LOW LIFTS NORTHWARD, IT WILL LIKELY COMBINE WITH THE OTHER TWO AND STRENGTHEN TO OUR NORTH FRIDAY INTO SATURDAY AS HIGH PRESSURE BUILDS TO THE WEST, THEN ACROSS THE AREA SATURDAY NIGHT INTO SUNDAY.

Tonight
N winds around 5 kt...becoming S late this evening and overnight. Seas 1 foot or less...then around 2 ft late. A chance of rain...mainly after midnight...then rain likely late.
Mon
SW winds 10 to 15 kt with gusts up to 20 kt...becoming NW with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft...becoming mainly in SW with a dominant period of 6 seconds in the afternoon. Rain early in the morning...then a chance of rain late in the morning. A slight chance of rain early in the afternoon.
Mon Night
N winds 10 to 15 kt. Seas 2 to 3 ft. Mainly in N swell with a dominant period of 6 seconds.
Tue
E winds 10 to 15 kt. Seas 2 to 4 ft. Mainly in NE swell with a dominant period of 6 seconds. A chance of rain late in the morning. Rain in the afternoon.
Tue Night
E winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain.
Wed
NE winds 10 to 15 kt. Seas 5 to 6 ft. A chance of showers in the morning.
Wed Night
N winds 5 to 10 kt. Seas 3 to 5 ft.
Thu
W winds 5 to 10 kt...increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. A chance of showers.
Thu Night
W winds 15 to 20 kt...increasing to 20 to 25 kt after midnight. Seas 3 to 5 ft. A chance of showers in the evening...then a chance of snow showers after midnight.
Fri
W winds 20 to 25 kt. Seas 3 to 5 ft.
Fri Night
NW winds 20 to 25 kt. Seas 3 to 5 ft.
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ABOUT THIS FORECAST

Last Update: 312 PM EST SUN DEC 4 2016
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