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Storm Tracker Forecast: Cooling down with rain & snow showers ahead

Cooler temperatures are ahead for your Wednesday, and we'll continue to see temperatures dropping on Thursday. Mountain rain and snow showers are also on the way in your late week and early weekend forecast.

Posted: May 19, 2021 6:36 AM

You may want to put on an extra layer before you head out the door this morning. Cooler temperatures and gusty winds are on the way in your Wednesday forecast, and the potential for wet weather will be returning to portions of our region this evening. Low pressure tracking south from the Pacific Northwest is going to bring a big change of pace to our forecast today, and even bigger impacts are likely later this week. A Frost Advisory is in effect through 9am this morning in Trinity County, where temperatures could potentially dip into the lower to mid 30's. You're advised to bring your pets indoors, and cover your outdoor plants that are vulnerable to the chilly conditions. Temperatures are starting out in teh 50's to 60's in the valley, 40's to 50's in the foothills, and 30's to 40's in our mountain zones this morning. We'll have thin clouds brushing across our region through the day, but will stay mostly sunny in most areas. Clouds will become more substantial in our far northern zones this afternoon, and the potential for showers will sag south of the Oregon border this evening. High temperatures will drop by several degrees today compared to yesterday. Valley areas will mostly top out in the mid to high 70's, foothill areas will end up in the upper 50's to around 70 degrees, and our mountain zones will top out in the 50's to mid 60's this afternoon.

Low pressure will continue to drop into northern California late Wednesday night through Thursday, and that will bring even cooler temperatures, and more widespread showers to our region. Most of the wet weather will be in our higher elevations, with valley areas seeing little to no rainfall expected. Snow levels will dip to around 3500' in the Northern Mountains, and we'll have snow down into the 4000' to 5000' range in the Sierra and Cascades. A Winter Weather Advisory has been issued for portions of the Sierra and Southern Cascades above 5000' from Midnight Wednesday through 6pm Thursday. An additional Winter Weather Advisory will go into effect for the northern Sierra down to 6500' from noon through midnight on Thursday. Rain and snow showers will be very likely for the mountains and travel impacts are possible as roads will be slick and visibility will be impacted. Up to around 4 inches of snowfall looks likely down to 5000'. There will also be potential for thunderstorm activity on Thursday and Friday. Temperatures will dip into the lower 70's in the valley, 50's to mid 60's in the foothills, and 50's in the mountains on Thursday for the peak of the cooling this week. Low pressure will be centered just off to our east on Friday, and we'll continue to have the potential for showers in the Sierra, and a slight chance for showers in the Northern Mountains. Valley showers will be possible, but are not as likely. Temperatures will end up slightly warmer than Thursday on Friday, but we'll still end up below average for our temperatures on Friday afternoon.

The potential for showers will persist in our mountain areas as we head into your Saturday, but they will likely be lighter than Thursday and Friday. The best chance for showers will be in the Sierra and southern Cascades on Saturday, but we still can't rule out the potential for some light showers making it into the valley. Temperatures will warm back into the upper 70's to low 80's in the valley on Saturday, while foothill areas end up in the 60's to lower 70's and most mountain zones top out in the 50's to 60's. High pressure will build back into northern California from Sunday into Monday. That will result in dry weather and a decent warming trend returning in your late weekend and early next week forecast. Valley areas will end up back in the mid to high 80's on Sunday and Monday, while foothill and mountain areas climb back into the 70's to around 80 degrees. Models are showing another area of low pressure that could bring a modest cooling trend and the potential for limited mountain showers to our region for the middle of next week, but that is still a little too far off to forecast with any confidence.

Chico
Partly Cloudy
82° wxIcon
Hi: 85° Lo: 57°
Feels Like: 81°
Oroville
Clear
84° wxIcon
Hi: 85° Lo: 59°
Feels Like: 82°
Paradise
Clear
82° wxIcon
Hi: 78° Lo: 61°
Feels Like: 80°
Chester
Clear
82° wxIcon
Hi: 76° Lo: 35°
Feels Like: 80°
Red Bluff
Clear
82° wxIcon
Hi: 81° Lo: 53°
Feels Like: 80°
Willows
Clear
82° wxIcon
Hi: 82° Lo: 52°
Feels Like: 81°
The first weekend of autumn was pleasant for northern California, but our relatively tranquil weather will change soon. A Pacific storm is approaching the West Coast, and it will bring our area rain showers and gusty wind soon.
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