With warmer-than-normal ocean waters, forecasters are expecting another unusually busy hurricane season for the Atlantic.

Get ready for what nearly all the experts think will be one of the busiest Atlantic hurricane seasons on record thanks to unprecedented ocean heat and a brewing La Nina.

U.S. health and weather officials are unveiling a new color-coded system to warn Americans about heat danger, and it will set magenta as the most dangerous level.

National Hurricane Center Director Ken Graham will take over as head of the National Weather Service.

Hurricane season officially began Wednesday, and federal and state leaders are reminding everyone that now is the time to get ready for a storm.

Emergency preparedness officials are warning Floridians not to get complacent during the upcoming hurricane season, particularly in coastal areas that haven’t experienced strong storms recently.

"There is a danger of life-threatening storm surge inundation along the coast of southern and southeastern Louisiana," the National Weather Service said. What exactly is storm surge? The rise in water levels, known as storm surge, happens when winds from a fierce storm push water up and onto shore. Forecasters said the stronger the storm, the stronger the winds and the higher the storm surge will be. Rising water is the deadliest part of a stormWhen a big storm approaches, many people worry about wind and debris.