However, the most important tool for observing thunderstorms and other severe weather is the trained eye of the storm spotter. Storm spotters are, and always will be, an indispensable part of the severe local weather warning program for Orange, Western Riverside, Southwestern San Bernardino and San Diego Counties. Amateur radio volunteers operate a base station at the San Diego Weather Service Office during severe weather or other weather related emergencies. Through a network of repeater antennas, volunteers at the San Diego office contact other amateurs located in communities throughout extreme southwestern California, counties mentioned in the previous section. Storm information is collected at the base station for rapid relay by forecasters to the media, Emergency Management and Law Enforcement agencies, and the public.
Hams operate on emergency power when commercial power is lost so reports can still be received.
Hams have the capability to be mobile. Reports are received in a timely, efficient manner. Unlike police, fire, and other government emergency response persons, amateur radio operators have no jurisdictional boundaries. Amateur radio spotters are able and willing to perform their service for extended periods.