Significant Weather Hazards from Storms on the West coast and in the Mississippi Valley

A powerful West Coast storm is likely to produce areas of heavy rain with life-threatening flash flooding, especially on burn scars, high winds, and significant waves along the coast. Scattered severe storms capable of damaging winds gusts, isolated large hail, and tornadoes, including larger tornadoes EF-2 or greater is expected in parts of the Mississippi Valley into the Ohio Valley.
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Last Update: 702 PM EDT Sun Oct 24 2021

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Philadelphia, PA Local Forecast Office

31NM SSE New York NY

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT...

Synopsis: A warm front lifts north through the region tonight. Low pressure passes through the region Monday night, then merges with another low south of Long Island and meanders offshore through Wednesday. Another system will impact the region late this week and into the weekend.

Tonight
S winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt late this evening and overnight. Seas around 3 ft, building to 4 to 6 ft after midnight. Swell mainly from the SE with a dominant period of 7 seconds.
Mon
S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Swell mainly from the S with a dominant period of 6 seconds.
Mon Night
S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of tstms. Vsby 1 to 3 nm. Swell mainly from the SE with a dominant period of 7 seconds.
Tue
E winds around 15 kt, becoming NE early in the afternoon, then becoming N 20 to 25 kt late. Seas 5 to 8 ft, building to 7 to 10 ft in the afternoon. Patchy fog in the morning. Rain with a chance of tstms early in the morning, then showers in the late morning and afternoon. Vsby 1 to 3 nm in the morning. Swell mainly from the SE with a dominant period of 10 seconds.
Tue Night
N winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to 10 ft. Showers likely, mainly in the evening.
Wed
N winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Seas 6 to 9 ft. A chance of showers in the morning.
Wed Night
N winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft.
Thu
NE winds around 15 kt. Seas 4 to 7 ft.
Thu Night
E winds 15 to 20 kt. Seas 5 to 8 ft. A chance of showers after midnight.
Fri
E winds 15 to 20 kt. Seas 7 to 10 ft. A chance of showers in the morning, then showers likely in the afternoon.
Fri Night
E winds 15 to 20 kt, becoming SE 10 to 15 kt after midnight. Seas 7 to 10 ft. Showers likely. 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: 702 PM EDT Sun Oct 24 2021
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