Storms that ramp up so quickly complicate forecasting and make it harder for government agencies to plan for emergencies. Hurricane Erick, a Pacific storm that made landfall June 19 in Oaxaca, Mexico, also strengthened rapidly, doubling in intensity in less than a day.

The National Hurricane Center is tracking Tropical Storm Dexter, Invest 96L and system off the southeastern coast of the United States.

Notice the historical line that the storm has made a significant turn from heading west to almost directly north

A stronger and bigger Hurricane Erin pelted parts of the Caribbean and was forecast to create dangerous surf and rip currents along the U.S. East Coast this week. It reintensified to a Category 4 storm with 130 mph maximum sustained winds early Monday and moved closer to the Southeast Bahamas,

Hurricane Erin pelted parts of the Caribbean and was forecast to create dangerous surf and rip currents along the US East Coast this week.

The National Hurricane Center is monitoring two disturbances in the Atlantic. A third, Tropical Storm Dexter, the fourth named storm of the season, continues to move out to sea. Why it matters: August is usually when hurricane season ramps up,

Invest 97L is now in the Atlantic joining Invest 96L and NHC forecasters said if development comes it'll be next week.

FILE - Mike Brennan, then-branch chief at the National Hurricane Center, gives an update on Hurricane Harvey as it moves toward the Texas coast, Aug. 25, 2017, in Miami.

As Saturday’s first light shone over powerful Erin, a clear and compact eye was discernible. This feature is the lowest point of