CANWARN is a volunteer organization of amateur radio operators who report severe weather and damage reports to Environment Canada. Weather reports from amateur radio operators (ground-truthing stations) help confirm on the ground what satellites and radars see in the atmosphere. The information gathered from CANWARN is also used to update and fine tune weather warnings, fill in gaps in current observing networks and is also valuable in forensic storm analysis.
When Environment Canada issues severe weather watches or warnings, they may alert the CANWARN volunteer Net Controllers in the affected areas.
Net Control will contact members by e-mail and inform them a net will be activated and what information Environment Canada will be looking for and the order the information is to be sent. This is very important as NCO's will only have a short time each hour to collect this info and send it off to Dartmouth.
The ARES is composed of certified radio amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service when disaster strikes. Every certified radio amateur, whether or not a member of RAC or any other local or regional organization, is eligible for membership in the Amateur Radio Emergency Service (ARES). The only qualification is a sincere desire to serve. The possession of emergency-powered equipment is desirable but not a requirement. Any and all use of the RAC AMATEUR RADIO EMERGENCY SERVICE & DESIGN trade-mark requires a call sign or permission from Radio Amateurs of Canada Incorporated."