JLab to Test Tornado Warning Siren on Friday Morning

Newport News, Va. - The Thomas Jefferson National Accelerator Facility will test its tornado warning siren at 10:30 a.m. on Friday, May 4. Depending on weather conditions at the time of the test, the siren could be heard by anyone outdoors within a 1.5-mile radius of the lab.

The test will be carried out over a period that could last from 30 seconds to three minutes. The test will be of the wavering tone (also called high-low-high or 10-4-10).

Jefferson Lab uses the siren to quickly alert members of the lab community who are working outdoors to "take cover" in the event of tornadoes and tornado warnings in the immediate vicinity of the lab.

The lab tests the system on the first work Friday of each month. For questions about Jefferson Lab's tornado siren contact its Public Affairs office at jlabinfo@jlab.org.

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Jefferson Science Associates, LLC, manages and operates the Thomas Jefferson National Accelerator Facility, or Jefferson Lab, for the U.S. Department of Energy's Office of Science. JSA is a wholly owned subsidiary of the Southeastern Universities Research Association, Inc. (SURA).

DOE’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time. For more information, visit https://energy.gov/science