A cutoff system that is over the area at the current time brought a dusting of snow to Big Bear, and sprinkles/light rain to other sections of the forecast area and more is heading your way. The Santa Ana Winds are redeveloping overnight tonight. Read on for details.
On Thursday morning and article went out outlining the events to come for this weekend. The article (click here to read) stated, “The system around is particularly interesting because the actual cutoff system moving into the region does bring with it some moisture and upper dynamics. Be it from the High Desert, Inland Empire, Orange, or San Diego areas … the exact track of this is not known due to the cutoff nature. Given the type of system it is… if it does manage to move across the area… we may introduce a ‘surprise’ quick developing area of convective activity in a very small section of the forecast area, including a dusting of snow in the mountains.”
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1-2 inches of snow in spots tonight for the Upper San Bernardino Mountains .. The reason for this is because as the northerly winds kick up, moisture rounding the system out of the north will bunch up against your mountains later this evening into the tonight .. reintroducing the chance of snowfall once again.
As this cutoff system drops southeast into the area tonight, bringing shower/thunderstorms activity to Arizona along with mountain snow, the system will have strong northerly winds.
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Being we do have a 100kt upper level jet out of the north as well, the winds will push far from the mountain passes, surfacing into the Los Angeles Basin as well, including Long Beach, La Mirada/Whittier, and the San Gabriel Valley. Strong wind gusts should moving out of the passes into the metros just after 9pm tonight, gusting all night.
Areas in Banning/Hemet/San Jacinto and Escondido will have to wait till Sunday morning to get any stronger gusts as this is a northerly wind event, not an easterly one. I do not expect the strong gusts to surface in Downtown San Diego .. but they will for Camp Pendleton and most of Orange County.
Just as with the last event, strong gusts will hit with this event for the Desert areas as well, including the Morongo Basin to Imperial County.
Winds will calm later on Sunday as the system moves off to the east and we lose the upper support.
Stay tuned to Southern California Weather Force for any additional updates
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