HRRR Simulated Radar - Showers still possible across #SoCal today, diminishing across Coastal/Valley locations by this evening as the flow turns Northeasterly, but Snow showers will be possible in Mountains, especially Northern/Eastern slopes, through Saturday. #CAwx

Composite Radar as of 2:44PM 11/20/25 - The leading edge of the Frontal System is pushing through LA/OC Metro areas. Showers will continue across #SoCal this evening as the center of the Low moves over the region, triggering potentially heavy scattered showers and Thunderstorms through Friday AM.

HRRR Simulated Doppler Radar depiction through 10:00AM Saturday - The Cold Front will push through LA/OC this afternoon with mostly light/moderate Rain. Heavier Showers and Thunderstorms possible late tonight through Friday AM as the cold Low Pressure center moves over #SoCal.

HRRR Simulated Radar depiction through 10AM Friday Morning - The final Storm system of the sequence moves into #SoCal tomorrow through Friday AM with 1" - 2" expected for Coasts/Valleys.
#CAwx #LARain

Looking ahead - #SoCal will see fair/partly cloudy weather on Wednesday, followed by the final Storm of the sequence moving through on Thursday through Friday AM, followed by a ridge building in over the weekend with fair weather through Thanksgiving weekend. #CAwx

Composite Radar as of 11:04AM 11/18/25 - A few scattered showers are developing across #SoCal Coastal and Valley locations as the Core of the Low moves directly overhead. This cold unstable air aloft will trigger scattered showers and Thunderstorms through this afternoon. #CAwx #LArain

Composite Radar as of 4:44PM 11/17/25 - Rainfall associated with a Cold Front is pushing through LA and Orange Counties. Colder unstable air behind the front will arrive overnight and produce additional scattered showers and possible thunderstorms across #SoCal into tomorrow.

Composite Radar as of 10:44AM 11/17/25 - The leading edge of #SoCal's next storm is moving into Western LA County and will advance Southeast through the Day.
#CAwx #LArain

Composite Radar 11/15/25 12PM - A cutoff Low Pressure system continues its slow advance across #SoCal. Most of the rainfall has been light/moderate for most locations. Heavier bands of rain will be coming ashore into LA/OC Metro areas over the next few hours.

- Some areas will see heavy Thunderstorms and excessive rainfall rates that will cause runoff issues, local street flooding, etc.

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Latest HRRR Simulated Radar depiction through 4PM Sunday - Heaviest rainfall will move through the region between late Tonight and Saturday afternoon.
#CAwx #LArain

Model Guidance is currently suggesting the West Coast, including #SoCal will remain in a stormy pattern through next week and into the following weekend with multiple systems moving through the region. (12z Euro deterministic run shown) #CAwx #LArain

HRRR Model's Simulated Radar through 2pm Saturday - Rainfall will decrease this afternoon before the next surge of showers moves into #SoCal late tonight through tomorrow PM. Periods of heavy Rainfall and possible Thunderstorms will be likely throughout the day on Saturday. #CAwx #LArain #SoCalStorm

The Hi Res NAM's Simulated Radar depiction through Saturday PM provides a good illustration of the multiple waves of moisture that will be fed into #SoCal, starting with the Cold Front Tonight/Friday AM, and then the Southerly surge of moisture on Saturday as the Cutoff Low approaches. #CAwx #LArain

GOES West Satellite - A Low Pressure system centered about 200 miles West of Crescent City will drop South and cut off near #SoCal this weekend, spinning waves of moderate to heavy Rainfall into the region through this weekend. Rainfall will reach SLO/SB & Ventura tonight, and LA/OC by morning.

1/3) Model Guidance tools continue to disagree on details, but they do agree that #SoCal will see periods of moderate to heavy rainfall between late Thursday night and Sunday as the system slows down, cuts off and stalls near the area before moving East, with another storm on its heels for Monday...

2/2) The System will Move through #SoCal on Thursday before moving East into Arizona with a few lingering showers across portions of SoCal on Friday, before clearing out on Saturday. #CAwx #AZwx