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Most of the snow will be in the mountains, but the storm should help clear the air.

(Francisco Kjolseth | The Salt Lake Tribune) Poor air quality clouds the Salt Lake Valley on Tuesday, Jan. 18, 2022.

The big news of a storm that will continue through Friday morning in Utah is not what it will bring, but what it will take away.

According to the national weather service, the winter storm will drop maybe a few inches of snow – maybe more in some areas. But the great news is that it should stir up the air and eliminate the inversion and at least some of the smog plaguing the valleys of northern Utah.

A trace of 2 inches of snow is forecast for the northern Utah valleys and 3 to 7 inches in the mountain passes.

The storm is not expected to make the air crystal clear at lower elevations, but it is expected to improve air quality. According to the Utah Air Quality Division, Salt Lake, Cache, Davis, Tooele, Utah and Weber/Box Elder counties are expected to move to yellow/moderate air on Friday.

In Salt Lake City, the National Weather Service predicts a 70 percent chance of snow Friday, mostly before 8 a.m., with 1 to 3 inches of accumulation possible. Daytime temperatures will be in the low to mid 30s, with nighttime lows in the 20s.

Once the storm leaves Utah, there won’t be another in the forecast until the middle of next week. Expect mostly sunny skies, daytime highs in the low to mid 30s and overnight lows in the low 20s – and reversals should occur.

Southern Utah is in even more of a weather rut. The Thursday-Friday storm will not reach St. George, where the forecast is for sunny skies with highs in the mid-50s and overnight lows in the 30s through Wednesday.

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Mary Cashion

The author Mary Cashion