Blistering Heat Wave Across Southern Plains and Lower Mississippi Valley This Weekend; Wet Weather In The East

A scorching Heat Wave will continue across the southern tier of the country. Temperatures and Heat Indices will reach or easily surpass triple digits, as a ridge of high pressure dominates. Widespread Excessive Heat Warnings and Advisories are in effect, will persist and spread into the Southwest/CA next week. Meanwhile, locally heavy rain will be possible for the OH Valley/Mid-Atl/Northeast.
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Last Update: 645 AM EDT Sat Jul 21 2018

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Philadelphia, PA Local Forecast Office

35NM NNW Lewes DE

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON

Synopsis: Low pressure located along the North Carolina coast early this morning will move northward. The low is forecast to pass through our region tonight. Meanwhile, another area of low pressure located over lower Lake Michigan will move slowly to the south. The low is expected to reach the southeastern states on Sunday night and it should remain there during the first half of the new week. High pressure located over the western North Atlantic is anticipated to gain some influence over our weather during the middle of the week. A cold front may arrive from the northwest on Friday.

Today
E winds 5 to 10 kt, becoming NE 15 to 20 kt with gusts up to 30 kt. Waves 2 ft or less, then around 3 ft this afternoon. A chance of showers early this morning, then showers late this morning and afternoon. A slight chance of tstms late. Vsby 1 to 3 nm late this morning and afternoon.
Tonight
NE winds 15 to 20 kt with gusts up to 30 kt, becoming N 10 to 15 kt with gusts up to 20 kt late in the evening, then becoming NW 5 to 10 kt after midnight, becoming SW 10 to 15 kt with gusts up to 20 kt late. Waves around 3 ft early in the evening, then 2 ft or less. Showers in the evening. A chance of tstms. A chance of showers after midnight. Vsby 1 to 3 nm early in the evening.
Sun
S winds 5 to 10 kt, becoming SE with gusts up to 20 kt in the afternoon. Waves 2 ft or less. A chance of showers and tstms.
Sun Night
SE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 ft or less. Showers likely with a chance of tstms.
Mon
S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 ft or less. Showers likely with a chance of tstms.
Mon Night
S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 ft or less. A chance of tstms. Showers likely, mainly in the evening.
Tue
S winds 10 to 15 kt. Waves 2 ft or less. A chance of showers and tstms.
Tue Night
S winds 10 to 15 kt. Waves 2 ft or less. A chance of showers and tstms.
Wed
S winds 10 to 15 kt. Waves 2 ft or less. A chance of showers and tstms.
Wed Night
S winds around 10 kt. Waves 2 ft or less. A chance of showers and tstms. winds and waves higher in and near tstms.
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ABOUT THIS FORECAST

Last Update: 645 AM EDT Sat Jul 21 2018
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