Winter Weather Advisories Issued: Northern Black Hills, Northeast Wyoming

Winter conditions are expected to push across our region from West to East, bringing slick roads and reduced visibility

  • If you haven’t already guessed from the graphics I’ve posted, thing will be a bit messy today.
  • I want to clarify something from the get-go of this whole forecast – This is NOT a major impact event.
  • The big deal here is trying to communicate the many, many different conditions that will be seeing throughout today and this evening.
  • This wide spread of different weather conditions, when combined, could make things difficult at time – but good common sense driving and keeping an eye on the forecast should be more than sufficient to get you around today. So with THAT, let’s finally dive in.

  • The National Weather Service in Rapid City has issued a Winter Weather Advisory for the Northern Black Hills and Campbell County, Wyoming. Johnson County, Wyoming also has a winter weather advisory.
  • This Advisory will go until 4 AM Thursday – with different impacts expected for the Northern Hills the Northeast Wyoming plains respectively.
  • Northern Hills could see 2″-5″ of snow with blowing snow in the evening – leading to slick roads and reduced visibility. Winds could gust up to 30-35 MPH
  • Campbell & Johnson County, Wyoming could see winds up to 35-50 MPH with 1″-3″ of snow.
  • Snow amounts will increase as you get closer to the Bighorns and I-25, so stay alert.

  • Most heavier precipitation will hold off for South Dakota until the afternoon, but Northeast Wyoming could start seeing impacts as soon as late this morning.
  • Fog, mist and freezing drizzle will precede this system in most areas, so just because it’s not snowing yet doesn’t mean the roads aren’t slick, especially on bridges and overpasses.

  • Temperatures will continue to drop through the morning, with gusty Northerly winds expected make things feel chilly.
  • Some areas could hit the 40s around noon today, but won’t get much higher than that before dropping into the 30s and eventually the 20s by this evening.

  • Wyoming will see on and off snow bands and gusty winds through rush hour, going into the evening.
  • South Dakota will see a general mix of sleet, rain, drizzle, graupel, and eventually a full transition to snow by about 6-8 PM this evening.
  • Windy conditions will lead to areas of blowing snow, areas specifically East of the Black Hills like Box Elder should pay attention to visibility issues as winds out there could gust up to 50 mph.
  • Stubborn snow bands could set up along the I-90 corridor between Sundance, WY and Rapid City, as they usually do.

  • Most of the area will be below freezing by 8 PM this evening, with 20s and 30s across the area.
  • Overnight temperatures in the higher elevations could reach the teens, with wind chill factors in the single digits – approaching zero.

  • Looking at the snow accumulation map, we’re not expecting a lot of snow here, maybe some areas of 5″+ in pockets up towards the Northern Hills and Cheyenne Crossing.
  • Northeast Wyoming could see 1″-3″, with the Bear Lodge Mountains seeing that 2″-4″ possibility.
  • I’ll mark Rapid City and the I-90 corridor with 1″-3″, but once you’re North and East of the Black Hills it’ll be tough to see anything above 2″, if anything at all in the Northern portions of our area.
  • I think 1″-3″ is an appropriate estimated for the Central and Southern Hills, with 1″ to maybe 2″ towards Oglala Lakota County.
  • As you travel Towards Lusk and Cheyenne, WY, you’ll encounter higher amounts of possibly 3″-6″ – be careful if you plan on travelling that direction today.

  • The good news is by Thursday morning we’re looking at better conditions, but colder and breezy.
  • Thursday will be dry, and Thursday night will be chilly and clear, perfect for the meteor shower we’re expecting to move through our region that evening!
  • Friday recovers nicely, with temperatures int eh mid 40s and plenty of sunshine – Saturday and Sunday for the most part will be mild and dry.

THANKSGIVING DISCUSSION

Not much has changed forecast-wise since we talked about the long range yesterday. A good sized system is expected to cross the Great Plains, but most impacts should stay to our South And East. That’s not to say we won’t get some snow out of it, but compared to what other people might get we’re looking pretty good so far going into the middle portion of next week. Colder temperatures at the very least look likely, and if you do have plans to travel East Monday-Wednesday of next week you’ll want to pay attention to the forecast. Per usual, we’ll keep you all updated. We appreciate you trusting us with your forecast, we know it’s important – particularly this time of year. Be safe out there! – Brant

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