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Storm Tracker Forecast: Thunderstorms & high fire danger ahead for today

The threat of thunderstorms is prompting a Red Flag Warning for high fire danger today. Temperatures won't be as hot, but it is expected to be more active this afternoon. We'll also have impacted air quality from the smoke from fires burning in our region.

Posted: Jul 22, 2020 6:30 AM

Slightly cooler temperatures, impacted air quality, and active weather is on the way in your Wednesday forecast. We're still sandwiched between high pressure to our East and West, but low pressure passing through to our South will continue to kick up the potential for thunderstorm activity in our region this afternoon and evening. The threat of thunderstorms combined with dry fuels and gusty winds is keeping our fire danger elevated today. A Red Flag Warning has been extended through 9pm tonight for portions of Modoc, Lassen, and Plumas Counties, and an additional Red Flag Warning will go into effect for the remainder of Modoc County, and a large portion of Siskiyou County from 11am this morning through 11pm tonight. Lightning sparked fires will be very possible with the conditions today. There will also be a chance for thunderstorm activity in the northern zones of the valley this afternoon and evening. Temperatures are starting out in the 60's to 70's in the valley, in the 60's in the foothills, and in the 50's to 60's in the mountains this morning. Winds are out of the East up to around 7mph, but will shift to become out of the South up to 15mph this afternoon. The Delta Breeze will play a role in keeping our temperatures from getting as warm as yesterday this afternoon. We'll end up in the low to mid 90's in the mid valley, and in the mid to high 90's in the north valley this afternoon. Foothill areas are expecting to top out in the mid to high 80's today, and mountain areas will end up in the 80's to 90's this afternoon. The best chance for thunderstorms will be this afternoon and evening in higher elevations of the Sierra, Southern Cascades, and the Northern Mountains, with a modest chance for thunderstorm activity in the north valley. Fires burning in our region will continue to result in impacted air quality today. You're advised to limit your time outdoors if you can.

The temperature trend will be very similar on Thursday, but most areas will see a drop of a degree or two in high temperatures. The potential for thunderstorms will start to shift off to the South and East tomorrow, but portions of the Sierra may still see some active weather in the afternoon and evening. Most areas will be sunny to mostly sunny on Thursday. Temperatures will start to rebound on Friday as the low pressure to our South tracks to our East. We'll still have a slight threat of thunderstorms in the Sierra, but the best chance will be to our South through this weekend. The heat will ramp up again as we head into your weekend, with valley high temperatures projected to climb into the high 90's to around 105 degrees. Foothill and Sierra locations can expect high temperatures to top out in the low to mid 90's this weekend, and the Northern Mountains will have high temperatures in the 90's to around 100 degrees. Similar conditions are expected as we head through the start of next week. Enjoy the modest dip in temperatures while it lasts and remember that when thunder roars you should go indoors!

California Coronavirus Cases

Data is updated nightly.

Cases: 1185576

Reported Deaths: 19089
CountyCasesDeaths
Los Angeles3877937604
San Bernardino902221129
Riverside857741437
San Diego76359996
Orange750951577
Kern40337448
Fresno37724481
Sacramento35854566
Santa Clara32985476
Alameda28857505
San Joaquin25738502
Contra Costa23571261
Stanislaus21460424
Tulare20649308
Ventura19058175
Imperial15862356
San Francisco15156160
Monterey14750116
San Mateo13715170
Sonoma11922157
Merced11537179
Santa Barbara11277135
Kings1047587
Solano1003681
Marin7628129
Placer635468
Madera604785
San Luis Obispo596435
Shasta471847
Yolo462675
Santa Cruz426928
Butte389459
Sutter314415
Napa298817
El Dorado22174
Yuba198110
San Benito183716
Lassen17733
Tehama161225
Mendocino148522
Nevada11849
Tuolumne9088
Glenn8928
Lake89019
Humboldt8509
Colusa6946
Siskiyou6242
Mono5273
Amador52016
Calaveras47822
Del Norte3131
Inyo29016
Plumas2050
Trinity1390
Mariposa1282
Modoc1250
Alpine470
Sierra190
Unassigned00
Chico
Clear
37° wxIcon
Hi: 62° Lo: 37°
Feels Like: 37°
Oroville
Clear
42° wxIcon
Hi: 60° Lo: 36°
Feels Like: 42°
Paradise
Clear
37° wxIcon
Hi: 55° Lo: 40°
Feels Like: 37°
Chester
Clear
18° wxIcon
Hi: 50° Lo: 19°
Feels Like: 18°
Red Bluff
Clear
35° wxIcon
Hi: 66° Lo: 34°
Feels Like: 31°
Willows
Clear
37° wxIcon
Hi: 65° Lo: 34°
Feels Like: 37°
The final Friday of November was a beautiful one for northern California with plentiful sunshine, warmer than average temperatures and weaker wind. We can expect plenty of sunshine and continued mild weather this weekend.
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