The damaging Santa Ana Wind Event is underway, with strengthening east winds for more widespread reports through this afternoon and evening. The Los Angeles Basin is breezy right now, but expecting an increase to advisory level gusts this afternoon/evening. The SCWF Winter Storm Warning is in effect for the Big Bear areas and the Mt. San Jacinto areas through Wednesday. The long-range forecast I put on January 7th for unsettled storm conditions the last 10 days of January is still on track so read on for details and see the image suite …
Widespread damage out the below the passes today with numerous high profile vehicles on their side. I mean, my video out clearly stated not to attempt to drive it so I’m not sure why this always happens. Click to view that video. Within the same video, the damaging zones are also showing on reports as knocked down polls and roof damage as well. 70 mph gusts are being reported 2 miles north of Santa Clarita and widespread 50-60 mph winds for Ventura County. Gusts are also being reported through the Inland Empire and into the Kern Mountains as well.
As the afternoon/evening hit, the winds will shift east with the low-level center of the inside slider being south of here. The counter-clockwise rotation around it will then blast the San Diego Downtown areas, including the airport. It also will open up the usually sheltered Los Angeles Basin for advisory level gusts between 30-40 mph.
Rainfall is likely through this event into Wednesday for San Diego County as you are the closest to the storm’s center of dynamics. Furthermore, the SCWF Flood Watch remains in effect for all Low Desert areas. The Imperial Valley will see the most rainfall in quite some time, including the chance of thunderstorms.
The wrap-around will also bring snowfall to the Big Bear Lake areas with the SCWF Winter Storm Warning zone. The east part of the lake into the Summit will see more snowfall than the west end, opposite of a usual Pacific Storm. The SCWF Winter Weather Watch issued on Friday for this event (5-day lead-time) outlined the wrap-around moisture as did the video. Plow-able snowfall is easily likely for the Big Bear Lake areas as well as the Mt. San Jacinto elevations, including the Palm Springs Tramway where you are included in my Winter Storm Warning.
As this kicks off through Thursday, Pacific fronts will be likely through the weekend and then again surrounding the 27th. As stated in the January 2021 forecast issued on the 7th (click here to read), the last 10 days would be unsettled so we are remaining on track. As these events get closer, I’ll update you.
Here are the images through Wednesday for this event – SCWF Premium Members you can go to the SCWF Member Section for zoom-in models of the below.
Martin 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
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 WIND ADVISORY CRITERIA
2. Large tree branches move, telephone wires begin to “whistle”, umbrellas are difficult to keep under control.
1. Small trees sway.
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