SPOKANE, Wash. — Another big storm is headed toward snow-weary Spokane, which already has had a record-breaking snowfall this winter.

The National Weather Service at 5 a.m. Sunday issued a winter storm warning — upgraded from a winter storm watch — for the Cascade Mountains and eastern Washington, including Spokane.

Weather bureau meteorologist Ellie Kelch in Spokane said the warning means “significant amounts of snow are expected that would make traveling very hazardous.”

Kelch said the forecast was for 6 to 8 inches of new snow in Spokane from 10 p.m. Sunday to throughout the day today.

Spokane already has 21 inches of leftover snow on the ground at the Spokane Airport.

After getting 61.5 inches of snow in December, Spokane has had 6.9 inches of snow in January, making the snow total for Spokane since Dec. 1 a whopping 68.4 inches.

The 61.5 inches was the highest snow total for any month in Spokane since the National Weather Service began keeping snowfall records in 1893.

“We’re tough here,” Kelch told The Associated Press on Sunday.

The previous snowfall record for any month in Spokane was 56.9 inches in January 1950 and the previous December snowfall record in Spokane was 42.7 inches in December 1996.

Kelch said the January 1950 record of 56.9 inches isn’t likely to be broken this year, though, because a warming trend — and everything is relative — is coming.

“I don’t know if we can break that (the January record),” she said. “We’re going to get into a warm period.”

Kelch said the high temperature Wednesday for Spokane is forecast at 39 degrees. Sunday’s high for Spokane was forecast at 20.

Sunday’s storm was expected to bring 1 to 2 feet of new snow in the Cascade Mountains, which separate western and eastern Washington, along the crest, Kelch said.

On Sunday, the Cheney School District announced it had decided to cancel classes for today. Eastern Washington University, located in Cheney, announced Friday it had called off classes for today. Eastern Washington said it will resume classes Tuesday if snow conditions allow. The district is southwest of Spokane.

Two animal rescue groups worked in harsh weather conditions to save more than 30 horses from starvation in Stevens County on Saturday. The horses were on a 40-acre piece of property near the town of Wellpinit, northwest of Spokane. Their owner, a 75-year-old man, told rescuers it was too difficult for him to care for the horses.

So rescuers with Shepherds Way Rescue and Fantasy Farm Thoroughbreds worked to catch the horses and load them into trailers in frigid conditions Saturday. Some of the horses were too weak to walk. The rescue groups said their plan was to rehabilitate the horses and put them up for adoption.