BROOKLYN, MI - AUGUST 27: General view of the grandstands during a weather warning during the NASCAR Camping World Truck Series Careers for Veterans 200 at Michigan International Speedway on August 27, 2016 in Brooklyn, Michigan. (Photo by Matt Sullivan/Getty Images)

This photo taken on August 24, 2016 shows people walking along the dried and cracked river beach of the Yangtze River in Yunyang county in Chongqing. Chongqing weather station issued a red alert for high temperature for 12 consecutive days from August 14. / AFP PHOTO / STR / China OUTSTR/AFP/Getty Images

This photo taken on August 24, 2016 shows a view of dried and cracked river beach of the Yangtze River in Yunyang county in Chongqing. Chongqing weather station issued a red alert for high temperature for 12 consecutive days from August 14. / AFP PHOTO / STR / China OUTSTR/AFP/Getty Images

This photo taken on August 24, 2016 shows a view of dried and cracked river beach of the Yangtze River in Yunyang county in Chongqing. Chongqing weather station issued a red alert for high temperature for 12 consecutive days from August 14. / AFP PHOTO / STR / China OUTSTR/AFP/Getty Images

This photo taken on August 24, 2016 shows a view of dried and cracked river beach of the Yangtze River in Yunyang county in Chongqing. Chongqing weather station issued a red alert for high temperature for 12 consecutive days from August 14. / AFP PHOTO / STR / China OUTSTR/AFP/Getty Images

MIAMI, FL - AUGUST 25: John Pavone, Chief Aerial Reconnaissance Coordination All Hurricanes, (L) and Daniel Brown, Senior Hurricane Specialist, work at the National Hurricane Center to track the path of a weather disturbance that has produced tropical storm-force wind gusts between 40 and 50 mph in heavy squalls over some of the northern Caribbean islands and surrounding waters and is of concern to the South Florida region on August 25, 2016 in Miami, Florida. The National Hurricane Center forecasters are still trying to determine if the system will strengthen and it's exact path isn't known yet but they urge people to be aware and prepared. (Photo by Joe Raedle/Getty Images)

MIAMI, FL - AUGUST 25: Daniel Brown, Senior Hurricane Specialist, works at the National Hurricane Center to track the path of a weather disturbance that has produced tropical storm-force wind gusts between 40 and 50 mph in heavy squalls over some of the northern Caribbean islands and surrounding waters and is of concern to the South Florida region on August 25, 2016 in Miami, Florida. The National Hurricane Center forecasters are still trying to determine if the system will strengthen and it's exact path isn't known yet but they urge people to be aware and prepared. (Photo by Joe Raedle/Getty Images)

MIAMI, FL - AUGUST 25: Daniel Brown, Senior Hurricane Specialist, works at the National Hurricane Center to track the path of a weather disturbance that has produced tropical storm-force wind gusts between 40 and 50 mph in heavy squalls over some of the northern Caribbean islands and surrounding waters and is of concern to the South Florida region on August 25, 2016 in Miami, Florida. The National Hurricane Center forecasters are still trying to determine if the system will strengthen and it's exact path isn't known yet but they urge people to be aware and prepared. (Photo by Joe Raedle/Getty Images)