Weather disasters occur almost daily, becoming more frequent: UN

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GENEVA (Reuters) - Weather-related disasters such as floods and heatwaves have occurred almost daily in the past decade, almost twice as often as two decades ago, with Asia being the hardest hit region, a U.N. report said on Monday.

While the report authors could not pin the increase wholly on climate change, they did say that the upward trend was likely to continue as extreme weather events increased.

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Since 1995, weather disasters have killed 606,000 people, left 4.1 billion injured, homeless or in need of aid, and accounted for 90 percent of all disasters, it said.

A recent peak year was 2002, when drought in India hit 200 million and a sandstorm in China affected 100 million. But the standout mega-disaster was Cyclone Nargis, which killed 138,000 in Myanmar in 2008.

"Whether it's increasing due to global warming, I think it's safe to say the jury's out on that. But rather than focus on the ifs, whys and wherefores, I think we should focus on how to manage floods."

Margareta Wahlstrom, head of the U.N. Office for Disaster Risk Reduction (UNISDR), said floods were not just caused by heavy rain but also by poorly planned construction.

UNISDR estimates natural disasters of all types cause losses of $250 billion-$300 billion globally each year.

The report drew on a database of weather events that defines an event as a disaster if 10 or more people are killed, 100 or more are affected, a state of emergency is declared, or if there is a call for international assistance.

The countries hit by the highest number of weather-related disasters over the past decade were the United States, with 472, China with 441, India with 288, the Philippines with 274 and Indonesia with 163.

RELATED: Recent November weather across the U.S.

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Recent weather across the U.S., November
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Weather disasters occur almost daily, becoming more frequent: UN
SANTA ANA, CA., NOVEMBER 9, 2015: Sarad Lopez (cq) holds an umbrella while her mother shops on Fourth Steet in Santa Ana during a light rain November 9, 2015 (Mark Boster/ Los Angeles Times via Getty Images)
SANTA ANA, CA., NOVEMBER 9, 2015: Keisha Flores holds her umbrella while she shops on Fourth Steet in Santa Ana during a light rain November 9, 2015 (Mark Boster/ Los Angeles Times via Getty Images)
WASHINGTON, DC - NOVEMBER 06: A plane flys above the Tidal Basin on a warm evening November 6, 2015 in Washington, DC. Unseasonably warm weather in the Eastern U.S. has made the first few days of November feel more like late Summer. (Photo by Alex Wong/Getty Images)
Leaves change color on Capitol Hill in Washington, DC, November 4, 2015. AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
WASHINGTON, DC - NOVEMBER 06: A woman rides a bicycle around the Tidal Basin on a warm evening November 6, 2015 in Washington, DC. Unseasonably warm weather in the Eastern U.S. has made the first few days of November feel more like late Summer. (Photo by Alex Wong/Getty Images)
People walk along Times Square in New York on November 6, 2015. New York recorded its hottest November 6 in nearly 70 years, as skaters splashed through puddles on a much-loved ice rink and commuters strolled around in T-shirts. AFP PHOTO/ JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
A woman has an ice-cream on a cone as she walks along a street in New York on November 6, 2015. New York recorded its hottest November 6 in nearly 70 years, as skaters splashed through puddles on a much-loved ice rink and commuters strolled around in T-shirts. AFP PHOTO/JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
WASHINGTON, DC - NOVEMBER 06: A helicopter flies above the Tidal Basin on a warm evening November 6, 2015 in Washington, DC. Unseasonably warm weather in the Eastern U.S. has made the first few days of November feel more like late Summer. (Photo by Alex Wong/Getty Images)
JACKSON, MS - NOVEMBER 07: Volunteers exit the course after play was called due to inclement weather during a continuation of the second round of the Sanderson Farms Championship at The Country Club of Jackson on November 7, 2015 in Jackson, Mississippi. (Photo by Michael Cohen/Getty Images)
MAMMOTH LAKES, CALIF. -- TUESDAY, NOVEMBER 3, 2015: Snow making in full force after a fall Sierra Nevada storm dropped nearly a foot of snow at Mammoth Mountain and less in town in Mammoth Lakes, Calif., on Nov. 3, 2015.(Photo by Brian van der Brug / Los Angeles Times via Getty Images)
MAMMOTH LAKES, CALIF. -- TUESDAY, NOVEMBER 3, 2015: A bike rose rides through snow in town after a fall Sierra Nevada storm dropped nearly a foot of snow at Mammoth Mountain and less in town in Mammoth Lakes, Calif., on Nov. 3, 2015.(Photo by Brian van der Brug / Los Angeles Times via Getty Images)
MAMMOTH LAKES, CALIF. -- TUESDAY, NOVEMBER 3, 2015: A fall Sierra Nevada storm dropped nearly a foot of snow at Mammoth Mountain and snowmaking is piling on in anticipation of a November 5 opening day in Mammoth Lakes, Calif., on Nov. 3, 2015.(Photo by Brian van der Brug / Los Angeles Times via Getty Images)
AUSTIN, TX - OCTOBER 30: Residents of the Onion Creek neighborhood were evacuated in the morning October 30, 2015 in Austin, Texas. After Hurricane Patricia's passing last week, the region was hit with more torrential rain and possible tornadoes. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - OCTOBER 30: Residents of the Onion Creek neighborhood were evacuated in the morning October 30, 2015 in Austin, Texas. After Hurricane Patricia's passing last week, the region was hit with more torrential rain and possible tornadoes. (Photo by Drew Anthony Smith/Getty Images)
AUSTIN, TX - OCTOBER 30: Residents of the Onion Creek neighborhood were evacuated in the morning October 30, 2015 in Austin, Texas. After Hurricane Patricia's passing last week, the region was hit with more torrential rain and possible tornadoes. (Photo by Drew Anthony Smith/Getty Images)
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