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A view of two circulations in the upper level flow mixing with smoke from Canadian wildfires
The National Weather Service in Glasgow, Mont., shared this amazing satellite image of wildfire smoke that got caught in the upper-level winds over the northern U.S. and southern Canada today.

The tendril of smoke is highlighting two areas of spin in the winds — one just north of Montana and the other in western North Dakota — that we wouldn't be able to see on satellite if the air was clear. The smoke is so thick over these areas that it's actually casting a shadow on the ground.

On Friday, 31 significant wildfires were burning in Canada from British Columbia to Manitoba. Smoke from these large fires and dozens more in Alaska has been filtering down into the Lower 48 over the past month. Earlier this week, smoke had prompted air quality warnings in Minnesota and Colorado, and Minneapolis saw its worst air quality in over a decade.