Section 6. Severe Weather Forecasts
Severe weather forecasts are issued by the NWS Storm Prediction Center (SPC) in Norman, Oklahoma, in the form of weather watches, convective outlooks, and status reports and transmitted to WMSCR for distribution. An Aviation Watch Notification Message (SPC AWW) is the weather watch formatted for the aviation community to alert them of organized thunderstorms forecast to produce tornadic and/or severe weather. FSSs may obtain the public weather watch (SPC WW) from WMSCR if desired.
Upon receipt of SPC AWW alert, the WMSCR immediately transmits the report on selected Service A circuits. Severe weather status reports (WW-A) are never urgent. These are relayed unscheduled.
- CONVECTIVE OUTLOOK NARRATIVE (AC)
The Storm Prediction Center will issue ACs numerous times each day. These forecasts describe the potential for severe and non-severe convective activity across the contiguous U.S.