advertisement

November 2, 2021 – Isolated lingering showers will be ending this morning then another weather system will bring light to moderate amounts of precipitation for Wednesday night and Thursday. More rain is expected for parts of the region this weekend with a stronger system due to impact the entire region early next week.

Discussion

Isolated showers will be ending this morning then weak ridging will through Wednesday will bring dry conditions and warmer temperatures. Have included a mention of some patchy fog this morning in the valley and for some of the mountain valleys. Clouds seem to be limiting the extent of formation though. Wednesday night and Thursday another weak system will move through the region with low impacts.

Snow levels will be high and generally above pass levels. Precipitation amounts will range in the valley to up to half an inch near Redding with amounts dropping off in the valley to less than a quarter inch as you move south. Foothills and mountains will generally range between a quarter of an inch to three quarters with local higher amounts over Western Shasta county. Dry zonal flow will set up Thursday night and Friday.

Extended Discussion (Saturday through Tuesday)

An unsettled weather pattern develops for the extended period. Starting on Saturday a weak system will move through the region ending Sunday morning. Rainfall amounts look very light and snow levels should remain high with this system and generally remaining above pass levels. NBM keeps any rainfall over the north but some models are hinting at bringing some rainfall down to around I-80. I have gone with the NBM solution for now.

Sunday should be mostly dry but NBM is trying to bring some light overrunning of precipitation to the north. On Monday a deeper stronger trough looks like it may bring us a decent atmospheric river to Northern California that will impact the region for Monday and Tuesday. Snow levels will be high at the start on Monday but should be lowering on Tuesday and may bring some significant snow below major trans-sierra pass levels. Very windy conditions also look possible along with some heavy rain.