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The 2003 heatwave, which saw temperatures in Europe reach 47.5 degrees Celsius, was one of the worst natural disasters of recent decades.
Some actions can help to limit severe blazes, such as setting controlled fires that mimic the low-intensity fires in natural ecosystem cycles or introducing gaps within forests to stop blazes from rapidly spreading over large areas.
The National Weather Service had issued warnings for the Hawaiian Islands for high winds and dry weather - conditions ripe for wildfires - which it cancelled later.
The technique, also used in Portugal and Spain, relies on grazing goats to control dry pastures and other vegetation that fuel forest fires in the summer.
Generally, criminals first cut down the valuable timber and later set fire to the area, clearing it for future agricultural use in speculative land grabs.
Similar to flight-simulator technology but designed specifically for firefighters, the Virtual Firefighter training program simulates dangerous fire scenarios.
Just days after bushfires threatened an Australian World Heritage site, thousands were bracing for floods on the subtropical east coast on Sunday, with beaches closed and the authorities urging people to sandbag their homes.
The country's worst summer of bushfires in a generation razed more than 11.2 million hectares (27.7 million acres), nearly half the area of the United Kingdom.
Gusty winds in California's north and extreme heat in its south are creating conditions that could fan wildfires that began earlier in the summer as well as spark new ones.
Heatwaves and droughts will pose the greatest threat in the next decade, as temperatures continue to rise due to heat-trapping gases, experts said.