JLab to Test Tornado Warning Siren at 10:30 a.m. on Friday, July 11

Jefferson Lab's tornado warning siren will undergo its monthly operational test at 10:30 a.m. on Friday, July 11.  Depending on weather conditions at the time of the test, the siren may be heard by anyone within a 1.5-mile radius of the lab.

Don't respond to the siren; this is a test of the siren system and not a personnel response exercise.

The test shouldn't last more than three-minutes.

Individuals planning to be in the Central Materials Storage Area (where the siren is located) while the test is taking place must have with them and wear two layers of hearing protection.

Jefferson Lab uses the siren to notify members of the lab community, who are outdoors, to Take Cover in the event of a tornado or tornado warning.

Jefferson Lab’s Site-Wide Alert (SWA) system (email, page, and Cisco phone text messages) will be used to remind the lab community of the test in the hour before the siren is sounded.

If this test were an actual Tornado Warning, the SWA system messages and siren would direct you to take cover immediately in a Severe Wind Take Cover area.