Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation.
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Last Update: 208 AM PDT Thu Jul 18 2019

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Los Angeles/Oxnard, CA Local Forecast Office

18NM SW Long Beach CA

Marine Zone Forecast


Synopsis: PZZ600-181745- 208 AM PDT Thu Jul 18 2019 .Synopsis for the southern California coast and Santa Barbara Channel including the Channel Islands National Marine Sanctuary and National Park...at 09Z, or 2 AM PDT, a 1028 MB high was located around 1000 NM W of San Francisco, with a 1007 mb low from Las Vegas to Yuma Az. $$

Today
Winds variable 10 kt or less, becoming SW to W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 6 seconds and SW 2 ft at 15 seconds.
Tonight
SW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 6 seconds and SW 2 ft at 15 seconds.
Fri
Winds variable 10 kt or less, becoming SW 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 7 seconds and SW 2 ft at 15 seconds.
Fri Night
W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and SW 2 ft at 15 seconds.
Sat
Winds variable 10 kt or less, becoming SW 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and SW 2 ft at 14 seconds.
Sat Night
W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and SW 2 ft at 14 seconds.
Sun
W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and SW 2 ft.
Mon
W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft.
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ABOUT THIS FORECAST

Last Update: 208 AM PDT Thu Jul 18 2019
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