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RED FLAG WARNING to 10 AM PDT Saturday


 

Red Flag Warning
URGENT – FIRE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
1245 PM PDT Fri Oct 13 2017

…Red Flag Warning through Saturday morning due to gusty north winds and low relative humidity for the Santa Barbara
County Mountains and foothills of southern Santa Barbara County…

…Red Flag Warning through Sunday due to gusty north to northeast winds and low relative humidity for most of Ventura and
Los Angeles counties…

Gusty north to northeast winds will impact the area through Sunday. From this afternoon through mid-morning on Saturday, north winds, gusting between 30 and 40 mph, are expected across the Santa Barbara county mountains and adjacent coastal foothills, the Interstate 5 Corridor, Santa Clarita Valley, San Fernando Valley and the Santa Monica Mountains. With the winds, very dry air will move into the area with minimum relative humidity in the teens and single digits. This combination of gusty winds and low relative humidity will result in critical fire weather conditions.

By late morning Saturday, the winds will shift to the northeast with a moderate Santa Ana wind event expected Saturday and Sunday for Ventura and Los Angeles counties. The northeast winds will increase during the day on Saturday, peaking in strength Saturday night and Sunday morning, before slowly diminishing Sunday afternoon. Wind gusts between 35 and 55 mph can be expected. Along with the wind, relative humidity will drop into the single digits
and low teens (with poor overnight recoveries). This combination of gusty winds and low relative humidity will result in an extended period of critical fire weather conditions for all of Ventura and Los Angeles counties (except for the Antelope Valley) Saturday and Sunday.

Santa Barbara County South Coast-Santa Barbara County Mountains-
12:45 PM PDT Fri Oct 13 2017

…RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 AM PDT SATURDAY FOR GUSTY NORTHERLY WINDS AND LOW RELATIVE HUMIDITY FOR THE SANTA BARBARA COUNTY MOUNTAINS AND THE COASTAL FOOTHILLS OF THE SOUTH COAST…

* Winds…North to northeast winds will increase to 15 to 25 mph with gusts up to 40 mph tonight.

* Relative Humidity…Minimum values in the low teens and single digits. Overnight recovery will be poor.

* Impacts…If fire ignition occurs, there will be the potential for very rapid spread of wildfire and extreme fire behavior that would lead to a threat to life and property.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A Red Flag Warning means that critical fire weather conditions are either occurring now….or will shortly. A combination of strong winds…low relative humidity…and warm temperatures can contribute to extreme fire behavior. Use extreme caution when using potential fire ignition sources.