National Weather Service United States Department of Commerce

Heavy Rainfall for the Mid-Atlantic; Heat and Wildfire Concerns for the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region today into tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the interior Northwest with dry and breezy conditions. Watching the tropics across the Southeast. Read More >


Explanation of EF-Scale Ratings

 Over the course of April 27th, 2011, damage across the entire range of the EF scale was sustained in some portion of the Huntsville County Warning Forecast Area. Below is a chart that explains what type of damage is associated with each ranking on the EF scale, including example photographs from the April 27th event.

EFScale Ratings