Clipped by a Clipper: Light accumulations, freezing fog Friday and Saturday
Light snow will start in northeastern Wyoming this morning and afternoon, eventually bringing light impacts to the Black Hills region through Saturday night
- Temperatures will start out in the 20s and 30s across the region, and wont get much better as we progress through the day.
- Clouds will be on the increase as light snow moves into Northeastern Wyoming, eventually pushing into the Black Hills by this afternoon.
- Some brief gusty winds could be possible as the cold front pushes through the region.
- Snow activity will be scattered and variable, with some areas receiving a few on and off snow bands and other areas receiving almost nothing at all.
- By About 10 AM, areas of the Northern Hills and Western South Dakota could start to see increased activity, which could include freezing drizzle and sleet.
- Activity winds down this evening precipitation wise, but freezing fog could develop, particularly in the Northern and Eastern foothills.
- A few areas of flurries or light snow could stick around overnight, but keep an eye on the roads – not the sky. Freezing fog can sneak up on you with slick road conditions.
- The show resumes Saturday morning as freezing fog is eventually replaced by more light snow.
- Northeastern Wyoming and Southwest South Dakota look to receive more persistent snow shower activity throughout the day, but these will be on and off.
- Temperatures Saturday morning will be in the single digits and teens for most of the region, with wind chills pushing sub-zero and single digits for most.
- As Easterly winds persist, wind chill will continue to feel quite bitter – particularly in the Eastern foothills and Rapid City.
- Saturday evening continue to show stubborn snow showers, which could lead to an inch or so of snow for Rapid City and the South Dakota Plains.
- The Northern Hills could see a little bit more accumulation as upslope enhancement continue to persist with Northwester flow aloft.
- By Sunday conditions are improving, with overall dry and warmer weather expected by midweek.
- Late next week could feature another quick moving clipper system, but as long as Northwesterly flow persists in our region it’s going to be tough to see any large-impact systems.
The National Weather Service has rolled out a new type of official Alert: Snow Squall Warning. This is the answer to those isolated pockets of blizzard-like conditions that seem to pop up in an otherwise uneventful snow shower. Clipper are notorious for these, especially in the Northern Hills and the I-90 corridor as Northwesterly winds ride up the Black Hills and use the upslope enhancement to gather energy. This weekend is a PERFECT example of an otherwise tame forecast for light snow that can quickly turn inconvenient. Never trust a clipper – make sure you have a winter kit if you’re travelling tonight through Saturday. Most of us will see little impacts, but it never hurts to be prepared 🙂 be safe out there! -Brant