Convective outlook

A forecast containing the area(s) of expected thunderstorm occurrence and expected severity over the contiguous United States, issued several times daily by the SPC. The terms approaching, slight risk, moderate risk, and high risk are used to describe severe thunderstorm potential. Local versions sometimes are prepared by local NWS offices.

(sometimes called AC ) - A forecast containing the area(s) of expected thunderstorm occurrence and expected severity over the contiguous United States, issued several times daily by the SPC . The terms approaching , slight risk , moderate risk , and high risk are used to describe severe thunderstorm potential. Local versions sometimes are prepared by local NWS offices.