Wednesday, January 20, 2021

Weather Discussion for Wednesday Jan. 20, 2021

Normal high/ low temperatures for Jan 18-Jan 25  (high/low) Redding 57/36, Chico 56/36, Quincy 46/23, Chester 43/20, Susanville 41/21, Grass Valley 55/33, Weaverville 49/28,  Mt. Shasta 46/27, Yreka 45/24, Alturas 42/17

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.

The high pressure ridge that is off the coast is moving slowly back to the west. This will bring in colder weather with possibly heavier precipitation next week.  Today will be sunny and cooler with the north winds will be ending this morning.  Clouds will begin to increase Thursday afternoon as a low pressure area drops southward along the Canadian coast.  The low will move through Northern California Friday with scattered light showers.  Snow levels will be 1500 to 2500 feet north and higher south.

Saturday we will see clearing skies with cool temperatures.  Late Sunday and early Monday another cold low pressure area will move through with light precipitation.  Snow levels will be 1000 to 1500 north and 2500 to 3000 feet south.  The map below shows the weather pattern for next Tuesday afternoon and Wednesday.  Note the low is further off the coast.  This would be a wetter system.  Snow levels will be low.  The caveat is that the models are not in agreement on location and strength of this pattern.

The Old Forecaster

Click here for latest infrared satellite picture
Click here for latest Cal Trans Chain Control 
CALTRANS traffic cameras  Try this link 

Click on the images below to make them larger...


  1. CNN says it will be really wet next week. Hope they are right!

  2. I think it eventually will. The problem is the models keep moving the start back and aren't in agreement. This morning the GFS (US) model has a strong storm Tue and the European has a weaker storm Tue and a stronger one Wed and Thurs.

  3. I've seen mention on the forecast discussion of snow down to +/- 500 feet in the Northern Valley.. curious if you agree with that potential or think snow level will be a little bit higher?

    Always enjoy reading your forecasts. Thank you!

  4. The snow will be close to Redding or 500 feet. The storms are cold and there will be cold air trapped in the north end of the valley. Sunday storm will have levels 500 to 1000. Tue/Wed storm is cold and wet. Models vary one has snow level approx 500 feet the other has it 1500. Both models have a lot of precip with the system.