Heavy rain and severe weather possible from the northern/central Plains to the Upper Midwest

Heavy rainfall and severe thunderstorms are expected across portions of the northern and central Plains, pushing eastward into the Upper Midwest by Wednesday. These severe thunderstorms may be capable of producing large hail and damaging winds, and possibly some tornadoes.
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Last Update: 940 PM EDT Mon Jun 26 2017

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Philadelphia, PA Local Forecast Office

35NM NE Atlantic City NJ

Marine Zone Forecast


Synopsis: High pressure will build eastward into the region tonight and throughout the day Tuesday. This high pressure system will become anchored offshore through the middle and later parts of this week. A cold frontal boundary is expected to approach from the northwest this weekend into early next week.

Overnight
SW winds 10 to 15 kt, diminishing to 5 to 10 kt late. Waves 2 ft or less. Mainly in E swell with a dominant period of 9 seconds.
Tue
SW winds 5 to 10 kt, increasing to 10 to 15 kt late. Waves 2 ft or less. Mainly in E swell with a dominant period of 9 seconds. a chance of showers and tstms early in the afternoon.
Tue Night
NW winds 10 to 15 kt. Waves 2 ft or less. Mainly in SE swell with a dominant period of 9 seconds.
Wed
W winds 5 to 10 kt. Waves 2 ft or less. Mainly in SE swell with a dominant period of 9 seconds.
Wed Night
SW winds 10 to 15 kt. Waves 2 ft or less.
Thu
SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Seas 3 to 5 ft.
Thu Night
SW winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 4 to 6 ft.
Fri
SW winds 15 to 20 kt. Seas 4 to 6 ft.
Fri Night
SW winds 15 to 20 kt. Seas 4 to 6 ft.
Sat
SW winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Seas 3 to 4 ft.
Sat Night
S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Seas 3 to 4 ft. A chance of showers and tstms. winds and seas higher in and near tstms.

Winds and seas higher in and near tstms.
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ABOUT THIS FORECAST

Last Update: 940 PM EDT Mon Jun 26 2017
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