Another reason for the heightened wildfire threat is the long duration of the wind event, which starts Tuesday night and carries until Thursday evening.

By Anthony Yanez

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Southern California is facing the strongest Santa Ana wind event in a decade, possibly reaching 80 mph. Anthony Yanez reports on NBC4 News at 5 p.m. on Oct. 29, 2019. (Published 6 hours ago)

Southern California is facing its strongest Santa Ana winds event in a decade, with gusts possibly reaching up to 80 mph in areas.

The winds are expected to pick up around 11 p.m. Tuesday night, with the strongest gusts during the event expected to roll in around 6 a.m. Wednesday morning. Santa Ana and Oxnard are forecasted to have gusts over 50 mph in those morning hours.

An extreme red flag warning has been issued from 11 p.m. Tuesday through 6 p.m. Thursday.

Canyon Country and Santa Clarita, which were hard hit by the Tick Fire last week, will have gusts around 50 mph, as will Simi Valley and Thousand Oaks all the way out to Camarillo, Santa Paula and Oxnard.

The forecasts are based on a model forecast, and models routinely underestimate wind gusts, so areas like Santa Clarita, Simi Valley, Thousand Oaks and Oxnard could hit 70 mph or even 80 mph wind gusts.

These winds will continue throughout the day on Wednesday, with the Santa Ana wildfire threat index at high when combining the high winds with the dry fuels and expected low humidity.

Another reason for the heightened wildfire threat is the long duration of the wind event, which starts Tuesday night and carries until Thursday evening.