A large, potent storm system is moving into the region from the west, drawing some unseasonably cold air and setting the stage for a snowy couple of days to start the month of May. The National Weather Service has issued some headlines associated with this wintry scenario. The Rochester area and portions of southeastern Minnesota are in a Winter Weather Advisory effective tonight and tomorrow as an evening mixture will give way to snow overnight when a couple of inches of snow may accumulate. Another couple of inches will fall Thursday with a slow transition to a rain/snow mixture in the afternoon. Totals in the Advisory counties will possibly reach four or five inches, especially on grassy surfaces. Heavier amounts will be possible north and west of Rochester, Austin, and Wabasha in locations like Cannon Falls, Owatonna, and Mankato where six or seven inches will be possible. The pavement may be a little slick early Thursday, even though accumulations will be lighter on those surfaces. We’ll have mixed showers Thursday night and Friday, but little if any accumulation is expected then as slightly warmer air will be moving in. The same storm system will keep light rain around for Saturday and possibly parts of Sunday before moving out of here.
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