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). 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.

The following is an example of a stand-alone LSR that has one individual report from a SKYWARN spotter:

Summary LSRs, which can have an extensive listing of individual reports, are also often issued by NWS WFOs after a weather event has ended in order to inform the public and news media outlets of the breadth of severe weather across a WFO's CWA.

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