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Unformatted text preview: GEOL 0820 Ramsey Natural Disasters Spring, 2011 LECTURE #17: Severe Weather: Extreme Heat & Desertification Date: 24 March 2011 I. In the News Possible tornado ravages western Pennsylvania town [USA Today] National Weather Service meteorologists were headed to areas of western Pennsylvania to confirm reports that a tornado destroyed about 30 homes and damaged 60 more. II. Dry Weather and Heat Waves critically important for loss of life o both short and long time scales o short: heat wave (days to weeks) o long: drought or desertification (months to years) Heat Waves/Dust Storms in the news o RECORD HEAT WAVE IN EUROPE TAKES 35,000 LIVES A record heat wave scorched Europe in August 2003, claiming an estimated 35,000 lives. In France alone, 14,802 people died from the searing temperatures o Chicago, IL (1995) strong upper-level ridge of high pressure in the northern Plain states 13-15 July: numerous heat records high humidity also 13-17 July 465 people died in Chicago most affected: poor and elderly over died on the upper floors and the first floor of apartment buildings o DUST CLOUD ENGULFS ENTIRE CITY OF 4 MILLION Riyadh, Saudi Arabia (March 10, 2009) visibility reduced to only a 0-3 meters caused traffic jams and stopped airport operations storms may last only hours up to several days Page 1/5 Rates:...
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- Spring '08