…WIDESPREAD DAMAGING NORTH TO NORTHEAST WINDS AND LONG DURATION
OF RED FLAG CONDITIONS LIKELY OVER MANY PORTIONS OF LOS ANGELES
AND VENTURA COUNTIES BETWEEN TUESDAY AND THURSDAY — POSSIBLY
EXTENDING INTO FRIDAY…
…RED FLAG WARNING IN EFFECT FOR MUCH OF LOS ANGELES COUNTY AND
SOUTHERN VENTURA COUNTY MOUNTAINS/EASTERN VENTURA COUNTY VALLEYS
FROM 10 AM TUESDAY TO 6 PM THURSDAY — FIRE WEATHER WATCHES REMAIN
THURSDAY NIGHT INTO FRIDAY…
…FIRE WEATHER WATCH REMAINS IN EFFECT FOR VENTURA COUNTY COASTAL
PLAIN AND NORTHERN VENTURA MOUNTAINS FROM 10 AM TUESDAY TO 6 PM
FRIDAY…
…FIRE WEATHER WATCH REMAINS IN EFFECT FROM 6 PM TUESDAY TO 8 PM
WEDNESDAY FOR THE LOS ANGELES COAST, PALOS VERDES, AND CATALINA
ISLAND…
.While there is still some uncertainty in this week’s strong wind
event and corresponding humidity levels at the onset, there is
growing confidence for a widespread strong/damaging north to
northeast wind event with an extended period of dangerous Red
Flag conditions. While the longer duration of strong winds is
expected to be focused across Los Angeles and Ventura counties,
there is a 20-30 percent chance of shorter duration Red Flag
conditions across portions of Santa Barbara and San Luis Obispo
counties.
With widespread damaging winds likely from Tuesday afternoon into
Wednesday across portions of Los Angeles and Ventura counties,
there will be an increased risk for downed trees and powerlines,
as well as power outages. There is also the potential for moderate
to strong north to northeast winds for the LA county coast,
(especially Hollywood Hills, Beverly Hills, and Sepulveda Pass)
extending into Palos Verdes and Catalina Island Tuesday evening
into Wednesday, resulting in the Fire Weather Watch for these
areas. There is a high probability of strong mountain wave wind
conditions during the peak of the event Tuesday afternoon into
Wednesday, which could bring strong/damaging winds to areas that
typically do not see strong winds, including portions of the San
Gabriel Valley and San Fernando Valley. Fire Weather Watches have
been converted to Red Flag Warnings in the Tuesday through
Thursday time frame for areas where there is highest confidence of
reaching critical Red Flag thresholds.
* WINDS…Most Likely Outcome-Moderate to strong north to
northeast winds Tuesday night into Wednesday with sustained
winds of 20 to 35 mph and potential damaging wind gusts of 40
to 60 mph. Strongest winds likely in the Hollywood Hills,
Beverly Hills, Sepulveda Pass, Palos Verdes extending into
Catalina Island.
* RELATIVE HUMIDITY…Most Likely Outcome-Humidities likely
falling to between 20 and 30 percent in many areas by Tuesday
afternoon, then widespread 15 percent or less potentially
Tuesday night into Wednesday. There is also a chance of
localized single digit humidities on Wednesday.
* IMPACTS…If fire ignition occurs, conditions are favorable for
very rapid fire spread and extreme fire behavior, including
long range spotting, which would threaten life and property.
There will be the potential for downed trees and powerlines, as
well as power outages.