Excessive Heat Spreads East; Many Areas with Heavy Rain Threats

Hot and muggy conditions are forecast to continue across the Midwest and Northeast, while spreading eastward. A frontal boundary bringing very heavy rains to the Upper Midwest will sag southward bringing cooler temperatures to areas to the north, including the city of Chicago. Heavy rains will also be possible along the Texas Gulf Coast from a tropical disturbance.
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Last Update: 925 AM EDT Mon Jun 18 2018

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Philadelphia, PA Local Forecast Office

10NM SE Lewes DE

Marine Zone Forecast


Synopsis: High pressure will remain anchored off the Mid-Atlantic coast and over the Southeast U.S. early in the week. Meanwhile, a cold front is expected to move southeastward and eventually pass through the Mid-Atlantic on Tuesday. This front should stall south and west of the area Tuesday night. A wave of low pressure is then expected to develop along this boundary and track nearby to our south Wednesday afternoon and night. High pressure builds into the region Thursday and Friday. The high moves off the New England coast by the weekend as the next low pressure system approaches from the Midwest.

Rest Of Today
S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt late. Seas 2 ft or less, then around 3 ft this afternoon. Swell mainly from the SE with a dominant period of 8 seconds.
Tonight
SW winds 10 to 15 kt. Gusts up to 20 kt. Seas around 3 ft. Swell mainly from the SE with a dominant period of 8 seconds.
Tue
NW winds 5 to 10 kt with gusts up to 20 kt, becoming NE late. Seas around 3 ft early in the morning, then 2 ft or less. Swell mainly from the S with a dominant period of 6 seconds. a chance of tstms in the late morning and early afternoon. A chance of showers in the late morning and afternoon.
Tue Night
SE winds around 5 kt. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 6 seconds.
Wed
SE winds 5 to 10 kt. Seas 2 ft or less.
Wed Night
S winds 5 to 10 kt, becoming W after midnight. Seas 2 ft or less. A chance of tstms in the evening. Showers likely.
Thu
N winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 ft or less. Showers likely in the morning.
Thu Night
E winds 5 to 10 kt. Seas 2 ft or less.
Fri
E winds around 10 kt. Seas 2 ft or less, then around 3 ft in the afternoon.
Fri Night
SE winds around 10 kt. Seas around 3 ft. 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: 925 AM EDT Mon Jun 18 2018
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