Friday, May 31, 2019

Here We Go Again: Distant Wildfire Smoke Hazing Up Our Skies

Smoke from wildfires in Alberta gave a brassy hue to
the evening skies over St. Albans, Vermont Thursday. 
Did it seem hazy to you here in Vermont yesterday afternoon?

You were on to something. Smoke from wildfires in Alberta was high overhead, introducing yet another summer in which clear blue skies are marred by smoke.

To be fair, Thursday wouldn't have been a pure bluebird sky day anyway. High and mid level clouds were coming in ahead of a cold front that was to our north and a storm system scooting by to our south.

But smoky haze gave a brassy hue to the atmosphere, especially yesterday evening. With a northwest flow aloft occasionally coming through over the next week, I wouldn't be surprised if we have other hazy days.

It still seems sort of hazy out there this morning behind that cold front.

It's not just us. Those Alberta fires are pushing smoke into much of the United States. Smoky skies have affected much of the northern Plains states  and southern Canadian prairies as well.

The smoky skies have been occasionally spreading to far-flung places like Vancouver, Minneapolis, Toronto, Detroit and Kansas City.  Smoke has also been spreading north to the Arctic Circle and into northeastern Alaska. There's a great smoke map that allows you to track the smoke by hitting this hyperlink. 

The fires up in Alberta are huge and out of control. At least 10,000 people in the remote region have been evacuated, and there's little sign that they fires will be under control any time soon.

Wildfires do seem to be on the increase and the season is lasting longer, due in large part to climate change. Unfortunately, we've had to get used to hazy, smokey skies in recent years as large fires repeated pump smoke into the atmosphere.

Springtime wildfires in the North are increasing because the snow melts earlier in the season, things dry out faster so fires can start. There have also been substantial wildfires in Siberia this spring.

While the smoke is rarely dense enough in Vermont to cause health problems, any level of particulate pollution in the atmosphere isn't good for us.

Mostly, it's just a let down when you want a brilliant blue sky and you get a sickly haze. It's not that we won't have bluebird days this summer or in future summers. It's just that we'll have to get used to experiencing fewer of them.

On the bright side, I suppose, the wildfire smoke can create more colorful and interesting sunrises and sunsets. You always have to find the positive somewhere, right?

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