2:45 p.m. Winter Storm Update: New Winter Storm Warnings Posted

Confidence is growing and a picture is starting to emerge for a winter storm this weekend

A WINTER STORM WARNING has been issued by the national Weather service in Rapid City

2:45 pm UPDATE:

  • A Winter Storm Warning has been issued for Jackson and Bennett counties in south central South Dakota
  • Timeline: 8 p.m. Friday to 11 a.m. Sunday
  • Impacts: A wintry mix including freezing rain will begin Friday evening before changing to snow. 8-13 inches can be expected

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WINTER STORM WATCH – Issued by the National Weather Service in Rapid City

WHEN – Friday afternoon through Sunday morning

WHERE – Southwestern South Dakota, Ekalaka, Montana and northeastern Wyoming

WHAT – Heavy snow of  6 inches or more are possible in the Black Hills, Foothills, Great Plains and northeast Wyoming. South central South Dakota could see amounts that are up to a foot of snow. Blowing snow is a possibility. Travel could become difficult during this time period.

GOES-16 Satellite, Fog blankets north central South Dakota, while snow/rain showers race across southeastern Wyoming and the panhandle of Nebraska

TODAY: Partly Cloudy skies will give way to a good amount of sunshine today, particularly for the northern portion of our viewing area. Winds will be Southerly at around 5-10. Temperatures could reach 50 degrees in some parts, with most seeing high 40’s.

TONIGHT: Clouds increase as temperatures cool to around freezing, perhaps high 20s. Precipitation will creep up from Wyoming and the panhandle toward Friday morning, with the possibility of light mixing and freezing rain in our southern counties. No major impacts expected.

FRIDAY: Any light mixing or flurries Friday morning will give way to spotty rain showers by mid-morning. Temperatures will struggle to reach the low 40s but should creep high enough to keep most roads ice-free. Mostly cloudy conditions will persist as southeast winds bring in moisture, at the tune of 5-10 mph, maybe 15 mph.

Unlike our other snow producing systems this year, this particular storm system is moving up from Colorado, giving it more access to gulf moisture.

FRIDAY EVENING: The upper low-pressure system will begin its march northeastward from Colorado and bring mixed precipitation to our region. By around 4-6 p.m., impacts look to start occurring from our southern counties moving north. As temperatures dip below freezing sometime between 4-8 p.m., most mixed precipitation will have turned to snow. Heavy bands will be likely, making travel treacherous at times. Heavy precipitation will persist going into Saturday morning, with shifting north winds possibly gusting up to 25 mph. This could lead to blowing snow, particularly in south central South Dakota.

GFS Precipitation model Friday Evening through Saturday morning

SATURDAY AND BEYOND: Heavy snow bands will continue to blanket the area through the morning hours. Visibility could be minimal if blowing snow is occurring. Any untreated roads will likely be covered, making travel difficult. 6-10 inches looks possible in southwestern South Dakota and northeastern portions of Wyoming. South central South Dakota could see areas with a foot or more of snow. These accumulation predictions will more than likely be refined and corrected in the next 24 hours as the precise track of the storm system will become more apparent.

Snow looks to continue Saturday night into Sunday morning, with light to moderate accumulations still possible. Temperatures will drop to the mid- to low teens, which could leave roads particularly icy. Travel conditions could still be difficult going into Sunday morning.

By noon Sunday, most heavier bands of snow will have moved to the east, with a few flurries lingering around. Conditions will turn dry and cool going into the beginning part of next week, with partly cloudy skies and highs in the low 20s.

Categories: Local News, Weather Daily

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