Severe Storms Expected Across Upper Midwest

Strong to severe thunderstorms with damaging winds, large hail, and heavy rain are expected across the Upper Mississippi Valley, which includes the Twin Cities metro area. Meanwhile, heavy rain and thunderstorms may produce flooding across the Mid Mississippi Valley and in the St. Louis metro region.
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Last Update: 101 PM EDT Sun Aug 9 2020

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Philadelphia, PA Local Forecast Office

33NM S New York NY

Marine Zone Forecast


Synopsis: High pressure will shift off shore later today. A series of weak lows will bring chances for showers and storms starting Tuesday. A cold front is expected to approach the region Thursday into Friday, but may stall north of our area.

This Afternoon
S winds around 10 kt, increasing to around 15 kt late. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 9 seconds.
Tonight
SW winds 10 to 15 kt, diminishing to 5 to 10 kt late. Seas 2 ft or less. Patchy fog after midnight with vsby 1 to 3 nm. Swell mainly from the SE with a dominant period of 9 seconds.
Mon
SW winds 5 to 10 kt, becoming S around 15 kt late. Seas 2 ft or less, then around 3 ft in the afternoon. Patchy fog in the morning with vsby 1 to 3 nm. Swell mainly from the SE with a dominant period of 9 seconds.
Mon Night
SW winds 10 to 15 kt, diminishing to 5 to 10 kt late. Seas around 3 ft. Swell mainly from the SE with a dominant period of 9 seconds.
Tue
SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 ft or less.
Tue Night
S winds 5 to 10 kt. Seas 2 ft or less.
Wed
S winds 5 to 10 kt. Seas 2 ft or less.
Wed Night
S winds 5 to 10 kt. Seas 2 ft or less.
Thu
S winds 5 to 10 kt. Seas 2 ft or less. A chance of tstms in the afternoon.
Thu Night
S winds 5 to 10 kt. Seas 2 ft or less. A chance of 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: 101 PM EDT Sun Aug 9 2020
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