Overview
- The National Weather Service has issued winter storm warnings and winter weather advisories for parts of Idaho, Montana and Wyoming, with alerts expected to remain in effect through Monday night.
- Forecasters say the slow‑moving system will drop several inches to over a foot of wet snow at higher elevations, commonly 4–8 inches above about 6,500 feet and up to 16 inches on the highest peaks.
- Strong, erratic winds with gusts around 50 to 55 mph are forecast in places, which will increase the risk of downed trees, blocked roads and dangerous crosswinds for vehicles.
- Valleys should see a sharp temperature plunge and cold, soaking rain instead of snow, and officials urge people to delay nonessential travel in the backcountry or carry winter‑storm survival gear if travel is necessary.
- Late‑June winter warnings in this region are rare, underscoring that unusual elevation contrasts in the American West can produce snow in the mountains while lowlands remain warm, and this timing could affect holiday travel plans ahead of the Fourth of July.