National severe local storms operations plan

This is the twenty-first of a series of National Severe Local Storms Operations Plans that was developed after a 1967 request by the Federal Coordinator for Meteorological Services and Supporting Research. This plan is one of several operations plans produced under the auspices of the Federal Coordinator. It outlines the responsibilities of the various United States agencies which provide meteorological services in observing and forecasting severe local storms. It also defines meteorological terms used by agencies preparing severe local storms forecasts and warnings, identifies differing operational warning criteria, and discusses communications, observations, and some public release aspects of severe storms warnings.