Monday, January 1, 2018

Weather Discussion for January 1, 2018

Normal high and low temperatures for Jan 1-Jan 8  (high/low) Redding 54/35, Chico 53/34, Quincy 44/22, Chester 40/18, Susanville 39/19, Grass Valley 50/30, Weaverville 45/26, Mt. Shasta 43/26, Yreka 42/24, Alturas 40/14

This blog will be issued every Monday, Wednesday, and Saturday morning and updated if the weather is changing or critical or interesting weather events are occurring.

We start the New Year off with a high pressure ridge continuing along the west coast.  However, the high is showing signs of weakening.  The frontal system that hit the high yesterday, was pushed northward but was able to push a few light sprinkles over Northern California.

Today through Tuesday we will continue to have partly cloudy to partly sunny skies with occasional mid and high cloudiness.  Daytime temperatures will be above normal and winds will be light.  Wednesday the jetstream will split as it crosses the Pacific and the weak southern branch will form a low pressure trough along the coast.  The map below shows this pattern and normally we would not see much precipitation with this type of pattern.   However, if you have been watching the satellite pictures you have seen that for the past week the storms hitting the ridge have been forming to our southwest and have been, and are, drawing subtropical moisture northward.  This source of moisture will give the off shore trough more to work with.

Light rain will spread over the area Wednesday afternoon and evening with periods of rain or showers through early Saturday.  Snow levels will be 6000 feet or higher.  Saturday afternoon through early Monday we will have partly cloudy skies and then a stronger storm should hit late Monday and Tuesday. 

The Old Forecaster

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