Tuesday, November 26, 2019

Special Weather Discussion for Tuesday Nov. 26, 2019


Normal high/ low temperatures for Nov 25-Dec 2  (high/low) Redding 59/38, Chico 60/38, Quincy 51/26, Chester 46/24, Susanville 47/25, Grass Valley 56/34, Weaverville 51/31, Mt. Shasta 47/28, Yreka 49/27, Alturas 48/21
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

This is a Tuesday morning update for the incoming storm.   The low pressure area is rapidly developing along the Oregon coast and is dropping southward.  The low will move into Northern California tonight and then move slowly eastward late Wednesday and Thursday.  

Clouds will increase today with precipitation spreading over Northern California later today and tonight.   Winds will also increase.   Strongest winds will be on then north coast and exposed areas north of Redding.  Although just about all areas will see fairly strong winds  South winds over the exposed areas north of Redding will gusty to  80+ mph tonight.  Winds in the valley will gust to 60 mph in the north end with light winds in the Sacramento area.  Winds over the Sierra will gust to 65 to 75 mph.. Precipitation will turn to showers by Wednesday afternoon and will end Thursday. 

Now about snow levels.  Snow levels overall will be 1500 feet north and 2500 feet south. The exception will be the Redding area and Sacramento River canyon north of Redding.   Currently there is a large area of cold dry air trapped in the north valley.   The south winds will tend to push that air out as they increase today.  However, sometimes the cold air is so stable the winds ride over the top of it and this results in lower snow levels in the north end of the valley.   So Redding will either have not much wind and snow tonight and early Wednesday or snow this evening and windy and rainy later tonight with showers Wednesday.  At this time I think the snow levels start out at 500 feet this afternoon and evening and rise up to 1000 to 1500 feet tonight when the south winds move in.

Friday we will have a break and then another low pressure area Saturday through Monday.  Once again we will be dealing with cold trapped air so snow levels may be low in the north. 

The Old Forecaster

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