An Alaskan storm system that was promised here at Southern California Weather Force to bring cooler temperatures to the Southland; predicted on February 10th, will move through the area tomorrow (Tuesday) into the overnight so for your area’s details, read on and see the model images inside …
This Alaskan storm system is indeed an inside slider. Inside sliders like this tend to bring less rainfall to the coast, more against the foothills of the mountains, mostly south and west facing slopes. This is exactly what will be happening with this system. It will move just a bit west to gather some moisture however and the images below shows you where I expect it to mainly reside.
What I see is the system has damaging winds in the mountain/desert regions, some areas along I-8 in the San Diego County Mountains being over 80 mph, which is more than enough to cause a travel hazard. One thing you will note is the ‘green’ area for showers extends down to the San Diego Downtown areas and even the coastal zones. This is because orographic lifting west of the San Diego Mountains does bring a precipitation chance there, whether drizzle/light showers … with light snow (flurries) possible for the San Diego Mountain areas.
Further north, we see there is no rainfall for areas like LAX where the winds are gusty (yellow-shade) out of the west. This area will remain dry …
To the northeast we go through the Inland Empire zones. As you can see, most of the Inland Empire stands a chance at seeing showers the closer to the center of the low you get with more onshore flow. The heaviest however will be the San Bernardino County portion of the Inland Empire nearer to the southern foothill/mountain zones. This southwest flow will back against the Redlands/Yucaipa areas later Tuesday and will pop off the frontal zone there, with this precipitation extending northeast through the San Bernardino County Mountains as well. The snow level will be around 4,000 to 4,500 FT later on Tuesday with it.
Due to lift, and instability, the cloud tops will be in a zone to produce the chance of lightning strikes in these areas, including the San Bernardino County sections of the Inland Empire and the mountain areas. 2-6″ of snow will fall downwind the thunderstorms in the Big Bear areas … 0-2″ elsewhere.
We had west from there through the SCV. The SCV will have a mix as you are elevated in spots for some showers, but mostly in a position for cold gusty winds. West to Ventura/Santa Barbara we go for no rainfall and only those cold gusty west winds.
North of there through the Kern Valley to the San Luis Obispo areas we have the ‘screw zone’ where you do not get much of anything out of this inside slider. No fun to be had … just cold temperatures inbound.
As we move through the overnight on Tuesday and through the week, overnight temperatures with the colder/drier air-mass behind the system will be present. I issued a Freeze Warning as a result and I am sure a number of valley areas will need some sort of Frost Advisory by then … lasting till Friday morning … The Freeze Warning for the High Desert however was the first and most important to put out. But, if you live in the upper valley areas or Inland Empire, consider understand frost advisory criteria temperatures are likely this week after Tuesday. All issued products up until this article is in the list below …
LONG RANGE: Long range suggest that after the 20th we get another system in the area. The jury is out on what type of system it will be, but I do want to say further west than this, but still of the cold inside slider type realm. We remain at just above 10.50″ inches of rainfall for Downtown Los Angeles this season. My forecast was 10-14″ which means we are within it and in a scientific perspective I wouldn’t mind now having too much more to maintain that window, but a lot of the times this type of pattern leads to an active Spring. That forecast will be given in a couple weeks as this month closes and we start Meteorological Spring, which is March 1st every year.
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SOUTHERN CALIFORNIA WEATHER FORCE MAIN:
The following articles pertained to the forewarning of this event;
February 12, 2022 – Wind Watch Issued
February 14, 2022 – Winter Weather Watch Issued
Winter Weather Watch
February 14, 2022 – Freeze Warning Issued
I control 10 counties in Southern California so there is a lot to say for various areas. The best I can do is let the images below speak for themselves.
The maps below are of flood, rain, snow, snow-level, or wind intensity, whichever is available now. Each one is clickable. Map 1 is NW SoCal, Map 2 is SW SoCal, Map 3 is SE SoCal, Map 4 is NE SoCal, Map 5 is the Cajon Pass, and Map 6 is the SCV region, which includes Gorman at the top.
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Main Weather Type – Valid Later Tuesday, February 15, 2022 –
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