The 2015 wildfire season was the largest in Washington state history , with more than burning across the state from June to September .

A large wildfire Catastrophe burned Destroying through Slave Lake , Alberta , Canada and its surrounding area from Saturday , May 14 , 2011 through Monday , May 16 , 2011 .

Total damage estimates exceeded Expansion C $ 5 billion and in terms of insurable damages Damaging , made Manufacturing the 2013 Alberta floods the costliest disaster in Canadian history at $ 1.7 billion , until the occurrence of the 2016 Fort McMurray wildfire .

The season began Process_start unusually early when a wildfire Catastrophe ignited Process_start on January 1 , followed by 6 more fires Catastrophe igniting Process_start later within the same month .

In early September 2014 , the Happy Complex Fire Catastrophe became Becoming the largest wildfire Catastrophe of the season , eventually topping out at in size on September 27 .

On October 8 , an aerial tanker crashed Damaging during a firefighting effort at the Dog Rock Fire Catastrophe , which killed Killing the pilot and sparked Causation a small wildfire Catastrophe .

In 2014 , a study found Know a human fingerprint in growing California wildfire risks .