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Storm system causes winter weather advisory in Gillette tonight through Friday

GILLETTE, Wyo. — It’s about to get cold again, and snowy.

The National Weather Service in Rapid City, South Dakota, says several inches of snow will be possible in the northern Black Hills, northwestern South Dakota and northeastern Wyoming as “a decent amount of Pacific moisture” pushes into the region.

Today will be the last of the latest warm winter days as the high-pressure system that kept cold and rain or snow at bay moves east. Today’s high will be near 50. Rain chances will rise from 20% to 60% starting around 11 a.m., beginning to mix with snow around sundown as temperatures begin to fall toward a low of 25. Winds will initially come from the south at 10–15 mph, but will turn in the afternoon to come from the northwest. Gusts of up to 25 mph will be possible.

(National Weather Service graphic)

Tonight will see snow chances max out around 70%, then fall to about 40% as the night wears on. After 8 p.m., all precipitation should be snow, the NWS in Rapid City said. Windchill will be as low as 12 as winds from the northwest pick up to 15–25 mph. Less than an inch of snow accumulation is expected.

Campbell County’s winter weather advisory is set to take effect at 5 p.m. today, remaining effective through 5 a.m. Friday. It’s been issued to warn of slippery road conditions and gusts that could down tree branches. Blowing snow could reduce visibility, it states.

Snow will remain likely Thursday with a 60% chance. The forecast high is 35, and windchills will be as low as 10 degrees. Winds from the northwest will continue at 20–25 mph while gusts of up to 35 mph will be possible. Less than half an inch of snow accumulation is expected.

Overnight, the chance for snow is 50%. Skies will be mostly cloudy and the low will drop to around 21. Windchills will make it feel like 13 with northwest winds at 10–15 mph.

Snow chances will continue falling Friday, albeit to 40% for the day and night. The forecast high is 34 and the low will be near 18. Saturday will see a 20% chance for snow as the winter weather system moves out of the area. The high will be around 31. Saturday night’s low will be around 17.

Campbell County should dry out Sunday and into the beginning of next week. Cold air will remain, so highs will struggle to get past 38 degrees.

More on the weather is available from the National Weather Service in Rapid City.