Local storm report

A Local Storm Report (LSR) is transmitted by the National Weather Service (NWS) when it receives significant information from storm spotters, such as amateur radio operators, storm chasers, law enforcement officials, civil defense (now emergency management) personnel, firefighters, EMTs or public citizens, about severe weather conditions in their warning responsibility area (County Warning Area or CWA).^[1] Those reports are received by local National Weather Service offices (WFOs), and they can be used to issue Severe Thunderstorm Warnings, Tornado Warnings, and other weather warnings/bulletins, in addition to the LSR.

The Storm Prediction Center, working with the NWS WFOs, collects these reports for its own database, and it also works with the National Climatic Data Center, which eventually stores the reports in the official record, which is called Storm Data.^[2]