Details: Clouds On Sunday, Chance of Light Showers For Some Will Give Way To Wind Event and Fire Hazard Across Southland


In what is known as famous here Southern California Weather Force, the micro-climate ability to show a variety of weather zones in one map that differs depending where you are is available on this update.  The Martin Wind Gust Intensity Scale model color scheme has been updated to be easier to read rather than the different shades of greens/gold/yellows and what not from before.  The intensity chart values images are within the article link so hit that for details as we have clouds with light showers giving way to a wind event through some of Monday so read on for details.

The Northern half of California is about to get hit by a damaging wind storm, especially in the Sacramento areas where my High Wind Warning is in place.  That article to read can be seen by clicking here. 

On Sunday, increased onshore flow will bring clouds to the coast/inland areas as early as the morning hours.  These will deepen over the afternoon and evening hours before the wind turns offshore. This onshore flow will bring wind advisory level gusts to the high and low desert areas over the day on Sunday.  The wind advisory (click here) is in place.

The onshore flow and offshore flow combined will create convergence boundaries starting in the Southern Kern Deserts, making it’s way through Gorman, to the Western half of the Antelope Valley, and some of the Ventura Basin areas, including the Santa Clarita Valley.  The increased onshore flow will provide upslope showers for some of the Orange County zones, east to the Inland Empire, and south to San Diego County and their respective mountain/foothill areas.  I wouldn’t be a bit surprised to hear of measurable rainfall for San Bernardino, Yucaipa, and Banning in this type of a pattern.

As the convergence zone moves southward overnight, wind gusts will increase across the area in a reverse flow, otherwise known as your Santa Ana Wind Event.  You may use the images below along with my scale included to known what your area will get.  Rosarito and Ensenada you are not in this event nor did I issue any alerts.

Monitoring a return of the winds by Wednesday so stay tuned.

This image can be clicked to make larger

Martin Wind Gust Intensity Scale –

8. Extensive widespread damage.
7. Trees are broken or uprooted, building damage is considerable.
6. SOME Trees are broken or uprooted, building damage is possible.
5. Slight damage occurs to buildings, shingles are blown off of roofs. HIGH WIND WARNING CRITERIA
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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