Extreme Fire Weather Threat in Southern California; Chilly Weather for Much of U.S.; Heavy Rain in South Plains

Cold, Canadian air will cause Santa Ana winds to develop across southern California for extreme fire weather threats early this week, and critical Fire Weather threats through mid-week. This cold air is also plunging much of the U.S. below to much below normal temperatures, especially, across the High Plains. Heavy rains continue across the South Plains as moist air rides over this cold front.
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Last Update: 342 AM EDT Mon Oct 15 2018

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Philadelphia, PA Local Forecast Office

11NM NW Fenwick Island Buoy DE

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON...
...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT...
Synopsis: A cold front will cross the region tonight followed by another cold front on Wednesday. Strong high pressure builds in for Thursday and Friday. Yet another cold front arrives on Saturday followed by high pressure for Sunday.

Today
S winds 10 to 15 kt with gusts up to 25 kt, becoming SW 15 to 20 kt with gusts up to 30 kt late this morning and afternoon. Seas 2 to 3 ft, then 3 to 5 ft this afternoon. Swell mainly from the SE with a dominant period of 7 seconds. A chance of showers early, then showers likely early this morning. A chance of showers late this morning and afternoon.
Tonight
SW winds 15 to 20 kt, increasing to 20 to 25 kt late in the evening, then becoming NW after midnight. Gusts up to 35 kt. Seas 3 to 5 ft. Swell mainly from the SE with a dominant period of 6 seconds. a chance of showers early in the evening. Showers in the late evening and overnight.
Tue
NW winds 20 to 25 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 25 kt in the late morning and afternoon. Seas 3 to 5 ft until late afternoon, then 2 ft or less. Swell mainly from the S with a dominant period of 8 seconds. a chance of showers early in the morning.
Tue Night
W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 12 seconds.
Wed
NW winds 10 to 15 kt with gusts up to 25 kt, becoming W 20 to 25 kt with gusts up to 35 kt in the afternoon. Seas 2 ft or less, then 3 to 5 ft in the afternoon.
Wed Night
NW winds 20 to 25 kt with gusts up to 40 kt. Seas 3 to 5 ft.
Thu
NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 3 to 5 ft.
Thu Night
NW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 3 ft in the evening, then 2 ft or less.
Fri
NW winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas 2 ft or less.
Fri Night
SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers.
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Last Update: 342 AM EDT Mon Oct 15 2018
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