Extreme <a href="https://en.wikipedia.org/wiki/National_Fire_Danger_Rating_System" id="mwrg" rel="mw:WikiLink" title="National Fire Danger Rating System">fire weather</a> in the <a href="https://en.wikipedia.org/wiki/Inland_Northwest" id="mwrw" rel="mw:WikiLink" title="Inland Northwest">Inland Northwest</a> of the United States causes many small wildfires to coalesce into the <a href="https://en.wikipedia.org/wiki/Great_Fire_of_1910" id="mwsA" rel="mw:WikiLink" title="Great Fire of 1910">Great Fire of 1910</a>, burning approximately <span about="#mwt26" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"3"},"2":{"wt":"e6acre"},"3":{"wt":"km2"}},"i":0}}]}' id="mwsQ" typeof="mw:Transclusion">3</span><span about="#mwt26" typeof="mw:Entity"> </span><span about="#mwt26">million acres (12,000</span><span about="#mwt26" typeof="mw:Entity"> </span><span about="#mwt26">km</span><sup about="#mwt26">2</sup><span about="#mwt26">)</span> and killing 87 people.