Thursday, July 22, 2021

Oregon's Wildfires Increasing to 400,000 Acres, West Coast Fires Causing Poor Air Quality In East


Southern Oregon's Bootleg Fire Grows To Nearly 400,000 Acres

TYLER DURDEN


The Bootleg Fire in Southern Oregon is now one of the largest in the nation and will continue to increase in size as the fire season rolls on. 

As of Wednesday morning, nearly 400,000 acres of forest and grasslands have burned. There's a risk that months of back-to-back heatwaves could increase the fire to as much as 100,000 acres, according to Portland news KOIN. The fire is currently 32% contained


The fire has been raging for about two weeks. Last Monday, we noted the fire was likely to "double in size.

Gov. Kate Brown on Tuesday warned the situation could get worse. She said 5,000 firefighters are battling wildfires across the state. 

"The good news is there's a lot of excellent work happening on the ground to protect Oregonians, to protect our homes, and our land," Brown said.

The Bootleg Fire is so large and intense that it's creating its only weather. 

"The fire is so large and generating so much energy and extreme heat that it's changing the weather," said Marcus Kauffman, a spokesman for the state forestry department, NYTimes quoted. "Normally, the weather predicts what the fire will do. In this case, the fire is predicting what the weather will do."

Local news KATU said Bootleg Fire has merged with the nearby Log Fire.

Across 13 states, 83 large wildfires have burned 1,293,636 acres, according to the National Interagency Fire Center


The wildfires hitting across the U.S. West have unleashed a massive amount of smoke that is currently transforming blue skies in the Mid-Atlantic and Northeast states into a murky yellow/orange. 






A remarkable situation is evident right now.   

Fires over the western U.S. are producing a dense veil of smoke that moved across the continent and then descended over the East Coast.

And there is a great irony in all this: most of the West Coast has excellent air quality while the air is unhealthy over the northeast U.S.

To illustrate this strange situation, here is the latest AIRNOW air quality map showing the air quality based on PM2.5, small particles that can move deep into your lungs.  ( I want to acknowledge UW Bothell professor Dan Jaffe, who brought this to my attention)

Green is good air quality while red is unhealthy. 


Really bad air quality in parts of New York, New Jersey, and Pennsylvania.  But air quality is really good along the West Coast!

You can visualize the movement of smoke by an image showing the smoke distribution at 11 AM this morning from the wonderful NOAA HRRR model.  Smoke generated over eastern Oregon, northern CA, and eastern WA moved northward around a ridge of high pressure centered over the Rockies and then headed southeastward towards the northeast U.S.

The smoke was quite apparent over the Northeast in the visible satellite imagery mid-day today (see below).  The grayish stuff is smoke.



 

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