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SEVERE WX : Fire Weather Watch View Alerts

Storm Tracker Forecast: Severe Winter Weather Has Arrived

Heavy rain, low elevation heavy snow, and strong South winds are bringing major travel impacts to Northern California

Posted: Nov 26, 2019 6:24 PM

Severe winter weather has returned to Northern California courtesy of a "Bomb Cyclone" off the coast of Northern California and Oregon. A Bomb Cyclone is a weather event where there is a pressure drop of 24 millibars or more in the span of 24 hours, and this event has had a drop of around 30 millibars in the span of 12 hours. Impacts from this weather event include heavy rain and snow, gusty winds, and colder temperatures. We've been tracking heavy rain and heavy low elevation snow across the region this afternoon and it will continue this evening. The heaviest rain and snow are expected to fall tonight through early Wednesday. Rain and snow showers will become more scattered towards Wednesday afternoon, and we'll have a chance for some thunderstorms in the valley. We've also been tracking gusty South winds developing across our region and the wind is expected to become stronger tonight. A Winter Storm Warning is currently in effect for valley areas of Shasta and Tehama Counties, and foothill and mountain areas of Trinity, Siskiyou, Shasta, Tehama, Lassen, Butte and Plumas Counties. The Winter Storm Warning is set to expire in the North end of the valley at 6am on Wednesday morning, but will linger in most mountain areas through 10pm Wednesday night. Foothill areas of Butte County, and the Western Slopes of the Sierra are set to be under the Winter Storm Warning through 7pm on Thursday evening. Snow levels will mostly dip into the 1000' to 1500' range over Northern California but we did have valley snow lower than that on Tuesday afternoon in Redding and Northern Tehama County. Up to a foot and a half of snow can be expected as low as 2000', and we could be dealing with up to 3 feet of snow down to 3000'. A High Wind Warning will be in effect in the valley through 11pm tonight and a Wind Advisory is in effect for the valley and foothills through 6am Wednesday morning. Sustained winds out of the South will be up to 30mph, and we could be seeing gusts up to 50 to 60mph during that time.

Winds will not be as strong on Wednesday and the rain and snow will become more scattered in nature by the afternoon hours. We'll have a chance for thunderstorms developing in the valley and foothills on Wednesday afternoon. Snow levels will remain down into the foothills for the next few days and we'll still have a slight chance for some Redding snow for the middle of this week. Temperatures won't be quite as cold on Wednesday but will still be well below average for this time of year. Overnight low temperatures will dip into the 30's in the valley overnight, and into the teens to 20's in the mountains. Valley areas will top out in the mid 40's to low 50's on Wednesday afternoon and mountain areas will end up in the 30's to low 40's. More showers will be possible on Thanksgiving, but they will not be as substantial. A break from the wet weather is expected in your Friday forecast, but we aren't expecting temperatures to change much in the afternoon. Overnight low temperatures will become much cooler towards the end of the week, with lows down into the 20's in the valley and into the single digits to teens in the mountains.

Another wet weather system will be on tap for your upcoming weekend. Showers will spread through the coast on Saturday morning, and will spread into the majority of our region by Saturday afternoon. Rain is expected in the valley, a mix of rain and snow can be expected in the foothills, and snow will return to all mountain areas. Rain and snow will continue through Monday. It looks like we may be in for another break from the wet weather on Tuesday of next week. Travel impacts look likely in the mountains this weekend.

California Coronavirus Cases

Data is updated nightly.

Confirmed Cases: 803660

Reported Deaths: 15516
CountyConfirmedDeaths
Los Angeles2657756488
Riverside581781189
San Bernardino53669922
Orange529041204
San Diego46001775
Kern31785361
Fresno28106382
Sacramento22026402
Alameda21028404
Santa Clara20882306
San Joaquin20194441
Stanislaus16452348
Contra Costa16327204
Tulare15897259
Ventura12617147
Imperial11781317
San Francisco1103899
San Mateo9785150
Monterey977270
Santa Barbara9003113
Merced8846140
Kings763177
Sonoma7320120
Marin6672117
Solano630963
Madera448165
Placer354244
San Luis Obispo351029
Butte280343
Yolo278955
Santa Cruz23199
Sutter169611
Napa166113
San Benito133111
Yuba11437
El Dorado10984
Mendocino89918
Shasta77717
Lassen7370
Glenn5743
Tehama5404
Lake53411
Nevada5317
Colusa5276
Humboldt5017
Calaveras31414
Amador29616
Tuolumne2274
Inyo18715
Mono1652
Siskiyou1650
Del Norte1391
Mariposa752
Plumas500
Modoc270
Trinity160
Sierra60
Alpine20
Unassigned00
Chico
Broken Clouds
90° wxIcon
Hi: 90° Lo: 68°
Feels Like: 90°
Oroville
Clear
90° wxIcon
Hi: 90° Lo: 67°
Feels Like: 90°
Paradise
Broken Clouds
90° wxIcon
Hi: 85° Lo: 64°
Feels Like: 90°
Chester
Scattered Clouds
68° wxIcon
Hi: 75° Lo: 48°
Feels Like: 68°
Red Bluff
Clear
89° wxIcon
Hi: 91° Lo: 70°
Feels Like: 89°
Willows
Broken Clouds
90° wxIcon
Hi: 92° Lo: 71°
Feels Like: 90°
Friday was a quiet weather day for northern California, ahead of hotter and potentially more dangerous changes this weekend and early next week. A Red Flag Warning will be in effect from Saturday evening through Monday morning.
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