Experts think that the Atlantic Ocean's rising temperature is a big factor in the alarming increase in hurricane-force wind speeds.

Jamaica is expected to be in the storm's eyewall, which refers to the band of dense clouds surrounding the eye of the hurricane. The eyewall generally produces the fiercest winds and heaviest rainfall, according to Deanna Hence, a professor of climate, meteorology and atmospheric sciences at the University of Illinois Urbana-Champaign.

A change from instantaneous wind-speed reporting to average wind-speed reporting aligned with a higher rate of flight delays, diversions, and cancellations this summer at the Aspen/Pitkin County Airport. Following a safety investigation, the Federal ...