There's a chance that Tropical Storm Chantal will form near Florida during Fourth of July weekend, which may dampen holiday festivities in the Sunshine State. The biggest threat from the developing system will be rain,

While water temperatures are warm enough in the Gulf to support tropical development, Saharan dust and wind shear could keep tropics quiet .. sort of.

Barry is expected to produce heavy rainfall in northeastern Mexico. Life-threatening flooding and mudslides are possible. The Hurricane Center is also tracking a disturbance in northern Florida, which forecasters say has a 20% chance of formation in the next seven days.