The hurricane center cautioned there is "larger-than-normal uncertainty regarding Rafael's intensity later in the forecast ...

In 1963, the Arecibo Observatory became operational on the island of Puerto Rico. Measuring 305 meters (~1000 ft) in diameter ...

Forecasters expected the storm to later weaken over Cuba before emerging in the southeastern Gulf of Mexico as a hurricane.

but scientists warn that the Atlantic hurricane season is far from over. “As far as hurricane landfalls in the U.S., it’s been crazy busy,” said Jeff Masters, meteorologist for Yale Climate ...