Tuesday's weather forecast includes more rain and snow, but tornadoes to the south

Damon Arthur
Redding Record Searchlight
The water in Lake Shasta is still low despite storms that passed through Northern California on New Year's Eve. Here, Shasta Dam is seen from the three Shastas overlook on Sunday, Jan. 8, 2023.

With the snow level down to 2,000 feet in areas of Shasta and Siskiyou counties, chains were required on some North State highways Tuesday. Farther south, tornadoes were in the forecast.

In many locations of Interstate 5 and highways 89, 44 and 299, big rigs and vehicles over 6,000 pounds were required to be chained up. While passenger cars and pickups under 6,000 pounds were required to carry chains in their vehicles, according to Caltrans.

The snow level, though, was expected to rise to 3,500 to 4,000 feet Tuesday afternoon, said Cory Mueller, a meteorologist with the National Weather Service in Sacramento.

While the Central Valley to the south, including the Sacramento area, was expected to get a break from the past week's heavy rains and flooding, weather forecasters say Redding and the rest of the North State can expect to see more precipitation through Thursday at least.

Another 1 to 2 inches of rain were expected Wednesday and Thursday, Mueller said.

"Much of our area will get a break from the rain, but you will not," Mueller said, referring to Shasta County and the northern Sacramento Valley.

A Pacific Gas and Electric Company crew works on a line off Dersch Road near Anderson after power was knocked out during a wind storm Thursday, Jan. 5, 2023.

Despite Sacramento and other valley areas to the south getting their break from rain and flooding, the region could see a new twist in the weather: tornadoes.

The weather service's alert for Tuesday included "possible brief tornadoes through this evening."

The far northern Sacramento Valley is unlikely to see tornadoes because of the lack of wind shear that causes breezes to move in different directions, exerting twisting and turning forces, he said.

Winds in the North State were forecast in the 30 to 35 mph range in the Redding area Tuesday, the weather service said. Those winds could still cause problems such as downed trees and power lines, the weather service said.

Conditions were expected to be colder in the Mount Shasta area of Siskiyou County, where 8 inches to a foot of snow is in the forecast. The Mt. Shasta Ski Park reported Tuesday that it had 9 feet of snow, with 6 inches of new snow within the past 24 hours.

Rain over the past couple weeks has helped to fill North State reservoirs. Since the first of the year, Lake Shasta has risen 20 feet, according to the California Department of Water Resources.

As of Monday, water was flowing into Lake Shasta at a rate of 45,256 cubic-feet per second, or about 1.2 billion gallons an hour.

The weather system reported 0.66 inches of rain Tuesday at the Redding Regional Airport, bringing the total since Jan. 1 to 5.5 inches. The normal amount for the first 10 days of January is just under 2 inches.

Up in Siskiyou County, the weather service said 0.82 inches of rain fell in Mount Shasta, bringing the monthly total there to 10.65 inches.

The weather service recorded 0.03 inches of rain Tuesday in Montague. Since Jan. 1, Montague has had 0.73 inches of rain; the normal for the date is 0.49 inches.