Weather parameters are coming together for a period of strong Santa Ana winds in Southern California Tuesday night into Wednesday.
This is looking like one of the higher end Santa Ana events of this winter with regards to wind speed. A developing closed 500 mb low over west-central and southern Nevada and easternmost California Tuesday night and Wednesday along with a surface high pressure building south are the two major contributors.
The CANSAC 2 km WRF is one of the better models to look at for these events. Here are to snapshots of what it is predicting for the 12Z Monday run.
Tuesday 4 p.m.:
Wednesday 4 a.m.:
These two maps show how the winds increase Tuesday night. The strongest winds will be late Tuesday night into Wednesday morning with widespread north-northeast winds of 25 to 50 mph with gusts to 60 mph in the areas favored by these type of winds. Winds will subside some midday and afternoon Wednesday. The wind and a dry air mass will bring a high fire danger across these areas.
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Another round of mountain snow will blanket the Sierra Nevada and Cascades early this week.
Several storm systems will impact the northwestern U.S. this week, delivering wind, rain and mountain snow.
A quick-moving storm will bring moderate rain to Southern California through Saturday night. Is more rain on the way next week?
The recent storm dumped plenty of snow across the Sierra, but how does the season stand?
An active week of weather is expected across the western U.S. with one storm system sweeping across California through Tuesday and another one arriving in the Northwest Wednesday.
Rain and mountain snow will continue through Friday in the Pacific Northwest. Heavier rain from a "river" of tropical moisture may lead to flooding over the weekend.