Severe thunderstorm and dust warnings were issued by the National Weather Service in Tucson on Wednesday, Aug. 20.

A watch means the ingredients are there for severe weather. A warning means it is happening. But there are differences based on weather type.

Hurricane Erin, now a Category 2 storm, is moving closer to North Carolina’s Outer Banks, where conditions are expected to deteriorate throughout the day.

North Carolina expects coastal flooding from massive waves, tropical-storm-force winds and tidal and storm surges for much of ...