A large portion of the Front Range of the Rocky Mountains was affected by smoke yesterday from the numerous fires burning in the west:
And you can still see smoke over Canada from the fires burning in the Northwest Territories.
It's often difficult to see the hotspots on top of the VIIRS RGB image, so here's an image showing just the OMPS AI and VIIRS hotspots:
Fire season is ramping up over North America. Here's the VIIRS RGB (left) and OMPS AI superimposed on the VIIRS RGB (right) images:
First, you can see a smoke plume over Canada's Northwest Territories. The largest AI value in the plume was over 10, which usually indicates a PyroCb occurred (although none has been reported yet).
In the US, you can see a large plume in the desert southwest. The temperatures in this area (near 120) have made battling the fires very difficult:
This plume also had high AI values, although not as high as the plume in Canada. The largest values here were just over 8.
Another significant dust plume from the Sahara made it's way across Europe last week:
For the aerosol index, I screened out areas affected by sun glint. You can see where these areas are from the underlying VIIRS RGB image, which clearly shows where the sun glint is.
There are a lot of fires occurring in western part of the US right now (as seen in the VIIRS RGB image with the hotspots on the left), and those fires are producing smoke that's covering a lot of the region (OMPS AI superimposed on the right):
In particular, the fires in southeastern Colorado produced dense smoke affecting cities up and down the Front Range of the Rocky Mountains:
OMPS AI levels reached over 7 for the smoke plume straddling Colorado and Nebraska.