A wind-stoked fire weather watch will be in effect through Saturday afternoon in the San Diego County mountains and inland valleys, the National Weather Service annonced Thursday.
Gusty northeast to east winds and very low humidity will develop in the mountains, foothills, and valleys Thursday through Saturday, with widespread daytime humidity of only between 5 to 15 percent through Saturday. The humidity was expected to reach its lowest on Friday, the weather service said.
The Santa Ana weather pattern will bring warmer weather west of the mountains, with highs on Friday reaching the 90s.
Northeast winds of 15 to 25 mph will gust to 30-40 mph through the mountain passes and foothills into the inland valleys, with local gusts as high as 45 to 50 mph Friday morning.
“The most widespread critical fire weather conditions will exist Friday morning into early Friday afternoon as offshore winds peak and very dry conditions persist, including in San Diego County,” the weather service said in a statement.
The situation is worse to the north, with parts of Orange, Riverside, Los Angeles and San Bernardino counties under red flag warnings, the highest level.
Winds will weaken Saturday, with much lighter winds and some improvement in humidity on Sunday.
City News Service contributed to this article.
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