Very Heavy Rainfall and High Risk Flood Event in the South-Central U.S.

Thunderstorms, some severe, will continue to produce tremendously heavy rainfall over the same areas through the day today. The area with the greatest potential for excessive rainfall includes Oklahoma, Arkansas, and Missouri. Very heavy rains will extend broadly from the Southern Plains to the Upper Midwest. Life threatening flash flooding is expected with these storms.
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Last Update: 352 AM EDT SUN APR 30 2017

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Philadelphia, PA Local Forecast Office

26NM S New York NY

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT...
Synopsis: A WARM FRONT WILL PROPAGATE NORTH THROUGH THE REGION TONIGHT. A COLD FRONT IS EXPECTED ON MONDAY NIGHT AS AN AREA OF LOW PRESSURE MOVES INTO THE GREAT LAKES REGION. THIS LOW WILL DRIFT NORTHEAST THROUGH EASTERN CANADA THROUGH MID WEEK. ANOTHER LOW PRESSURE SYSTEM WILL LIFT OUT OF THE LOWER MISSISSIPPI VALLEY TOWARDS THE MID ATLANTIC BY LATE IN THE WEEK.

Today
NE winds 10 to 15 kt...becoming E 15 to 20 kt this afternoon. Seas 3 to 4 ft. Mainly in S swell with a dominant period of 7 seconds. a slight chance of showers and tstms this morning.
Tonight
SE winds 10 to 15 kt with gusts up to 20 kt...becoming S 5 to 10 kt late. Seas 3 to 4 ft. Mainly in S swell with a dominant period of 7 seconds. a slight chance of showers early in the evening...then a chance of showers in the late evening and overnight. A chance of drizzle after midnight. Patchy fog after midnight with vsby 1 nm or less.
Mon
S winds 10 to 15 kt with gusts up to 20 kt... Increasing to 15 to 20 kt with gusts up to 30 kt in the late morning and afternoon. Seas 3 to 5 ft...building to 5 to 6 ft late. Mainly in S swell with a dominant period of 6 seconds. a chance of drizzle early in the morning. Patchy fog early in the morning with vsby 1 nm or less.
Mon Night
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Mainly in S swell with a dominant period of 6 seconds. showers and tstms likely...mainly in the evening.
Tue
SW winds 20 to 25 kt with gusts up to 30 kt...becoming W 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to 8 ft...subsiding to 4 to 6 ft in the afternoon. Showers likely with a chance of tstms in the morning.
Tue Night
W winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft.
Wed
W winds 10 to 15 kt. Seas 3 to 5 ft.
Wed Night
W winds 10 to 15 kt...becoming NW around 5 kt after midnight. Seas 2 to 4 ft.
Thu
E winds 5 to 10 kt...becoming SE 10 to 15 kt in the afternoon. Seas 2 to 3 ft. A chance of showers.
Thu Night
E winds 10 to 15 kt. Seas 3 to 5 ft... Building to 4 to 7 ft after midnight. Showers likely. winds and seas higher in and near tstms.
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ABOUT THIS FORECAST

Last Update: 352 AM EDT SUN APR 30 2017
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