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Fig4.EMCthenVnow.R1.jpg

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Map of western US, mostly orange shadings, indicating regions of nights with dry fuels predisposed to burning has increased

This graph shows how the frequency of nights with dry fuels predisposed to burning has increased between the 1981-2000 period and the 2011-2020 period. This has created the conditions for increased fire activity at night, a time when firefighters could once count on falling temperatures and rising humidity to give them a break. Credit: Pacific Marine Environmental Laboratory.