Southern California Weather Force has upgraded the Santa Ana Wind Watch issued on October 26th to a Santa Ana Wind Warning, effective for below mountain passes starting early Sunday morning before sunrise and moving through the day and into some of Monday.
A strong ridge to the west will bring cold air into the Great Basin between Nevada and Utah this weekend. The combination of freezing air in that area and average temperatures here will bring what is called a thermal support pattern. This will bring winds out of the desert and through the mountain passes. This will target The Cajon Pass through Ontario and down I-15 through Eastvale, Norco, Corona, and even into Orange County, but will be the strongest across Highway 14 through the Santa Clarita Valley where the Raiden Storm Wind Formula has you on a level 6, which is what is below.
Those of you in the San Diego County Mountains around Campo have a modest level 4, so not too bad, and this will wait till Monday as Sunday you will not have the winds like the rest of the area will have.
I also have included the following images below in zones for who will see what compared to the Raiden Storm Wind Intensity Scale, which does affect some of the desert areas from Kern/Los Angeles, and even out to the Morongo Basin/Coachella Valley and Imperial zones, even areas along the Colorado River Valley through Needles.
Raiden Storm Wind Gust Intensity Scale –
8. Extensive widespread damage.
7. Trees are broken or uprooted, building damage is considerable. – High Profile Vehicle Roll-Over CERTAIN.
6. SOME Trees are broken or uprooted, building damage is possible. – High Profile Vehicle Roll-Over Likely, Do NOT recommend Traveling in this zone. This zone also is the starting zone where trees and powerlines will fall and damage cars and even kill people near or in them!
5. Slight damage occurs to buildings; shingles are blown off of roofs. HIGH WIND WARNING CRITERIA – High Profile Vehicle Roll-Over Possible if weight is not corrected.
4. Twigs and small branches are broken from trees, walking is difficult.
3. Large trees sway, becoming difficult to walk. POWER SHUTDOWN THRESHOLD DURING FIRE WEATHER / WIND ADVISORY CRITERIA
Master General Meteorologist – Raiden Storm
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