Summer Heat Continues For Several Spots, While Severe Storms With Torrential Rainfall Will Threaten The Northeast into Mid-Atlantic Region

More summer heat is expected for parts of the West, South and Northeast before focusing over the southern Plains later this week. Excessive Heat Warnings are in effect for parts of the West, while Heat Advisories blanket each region. A strong cold front will clash with a hot, very moist air mass for afternoon/evening severe storms w/ high winds and intense rainfall from the Northeast to Mid-Atl.
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Hazardous Weather Conditions

Last Update: 641 PM EDT Tue Jul 17 2018

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Philadelphia, PA Local Forecast Office

11NM NW Fenwick Island Buoy DE

Marine Zone Forecast


Synopsis: A strong cold front will cross our area tonight. High pressure from the Great Lakes will follow for Wednesday and remain over our area into Friday night. A broad, slow moving upper level low will move into the east this weekend and affect our weather through early next week.

Tonight
SW winds 10 to 15 kt, becoming N late. Gusts up to 20 kt. Seas 3 to 4 ft. Swell mainly from the SE with a dominant period of 6 seconds. showers and tstms likely early this evening, then a chance of showers and tstms late this evening. A slight chance of showers and tstms late.
Wed
N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 4 ft. Swell mainly from the S with a dominant period of 7 seconds.
Wed Night
SW winds around 5 kt, becoming NW after midnight, then becoming N late. Seas around 3 ft. Swell mainly from the S with a dominant period of 8 seconds.
Thu
E winds 5 to 10 kt. Seas around 3 ft. Swell mainly from the SE with a dominant period of 8 seconds.
Thu Night
E winds around 5 kt. Seas around 3 ft in the evening, then 2 ft or less.
Fri
E winds around 5 kt, becoming SE in the afternoon. Seas 2 ft or less, then around 3 ft in the afternoon.
Fri Night
SE winds 10 to 15 kt. Seas 3 to 4 ft.
Sat
E winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers and tstms.
Sat Night
E winds 10 to 15 kt, becoming SE 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of showers and tstms.
Sun
S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. A chance of showers and tstms.
Sun Night
S winds 10 to 15 kt. Seas 4 to 6 ft. Showers likely with 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: 641 PM EDT Tue Jul 17 2018
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