Warm To Cold; Inside Slider System hits Later Thursday into Friday for Southern California



A system typical of what we’ve seen this Fall so far will hit the region later Thursday into Friday, bringing areas of rain and gusty winds to the area, along with these warm temperatures being knocked completely down by Friday.  Read on for details.

Well it is December and we are getting warmer than average temperatures this week.  But … it was expected as my December 2015 forecast called for an uneventful first half followed by colder and rainy weather for the last half.  We will see temperatures knock down to the 60s in the metro areas where they are in the 80s today … by Friday.  These temperatures will be from a fast moving cold front that will start in the areas west of Ventura later Thursday into Thursday night, sweeping across the metro LA/OC/SD/IE regions on Friday.  However a strong onshore flow on Thursday will bring the LA/OC/SD/IE areas and surrounding mountain foothill zones some upslope shower activity .. mainly by evening …

Gusty west winds are likely for many regions with a Wind Advisory now in effect on our service for the coastal regions.
Click Here To Read The Advisory for Friday.

Wind gusts will bring additional advisory/warning level alerts for the mountain/desert regions as well as this pattern has a strong low/mid/upper level jet out of the west and this could bring wind gusts over 60+ mph for the eastern slopes of the Kern, San Bernardino, Riverside, and San Diego County Mountains on Thursday and Friday.  Contacts going up to the Palm Springs Tramway will need to keep an eye on those future weather alerts.

A High Surf Warning is in effect for high waves on Friday.
Click Here To Read The Advisory for Friday.

The snow level will drop to 4500 Feet on Friday.  Given the aspect of the storm, the RIV/SBD Mountains will see the most snowfall … including the Kern Mountains with some snow possible on the Gorman Pass.   Winter Weather Advisories could be needed for this.

An area of positive vorticity advection will move through LA County northward on Friday and there may be a risk of thunderstorms with it … those of you with the alert system as members will receive those.

Other alerts are scheduled to go out and only members can unlock the contents in those.
Click Here To Unlock Alerts

Friday high temperatures
Friday high temperatures

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