Friday Rally Forecast: Afternoon Boomers North and East of the Black Hills

Some pretty good storms could be in the forecast this afternoon in Northwest South Dakota and areas just East of the Black Hills. Worth keeping and eye on

  • Morning thundershowers will push East, clearing up by late morning.
  • Sunshine should return to the area with temperatures expected to reach the 70s and 80s across the region

  • By 3 PM, some discrete and isolated thunderstorms will begin to form in the Northern foothills and areas of SE Montana/NW South Dakota
  • These storms are expected to not only be strong, but severe in some cases. Unlike the last couple of days, a cold front will be pushing south, enhancing lift and rotation dynamics

  • A classic I-90 Cruiser could be in the works, with isolated hail, gusty winds, and even an isolated tornado warning or two not off the table
  • Although these storms for the most part will be isolated, they have the potential to be fairly dangerous. Caution is advised this afternoon and evening, make sure you have a way to receive warnings

  • The good news is by 9 PM most storms are expected to clear off to the east and leave us with relatively clear skies
  • Areas East of Rapid City such as Wall, Kadoka, Philip and Martin will need to continue monitoring thunderstorm progress until a litter later in the evening, but should be clear after midnight

  • The storm prediction paints a more active picture Friday for areas far East of the Black Hills, but I believe this will eventually be expanded to include areas North of the Black Hills as well
  • This will include Spearfish, Sturgis, Belle Fourche, Buffalo and Bear Butte. This is worth monitoring throughout the morning

  • Looking ahead to Saturday, conditions will be much clearer in the morning, but with more afternoon thunderstorms expected
  • Some of those could be strong, but not looking at as robust severe weather as Friday

Sometimes you look at a forecast and see a pattern, one that models and computers may not pick up on. Friday has the look and feel of an active day, and I will treat it as such at the risk of having the forecast fall flat. The dynamics look good and today has the feel of early June rather than early August. Be extra cautious today and pay particular attention to the sky after 3 PM. We’ll be sure to update you on any developments this afternoon and evening. Be SAFE out there, and be weather aware. -Brant

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