Jefferson Lab to Participate in Statewide Tornado Drill

  • Statewide Tornado Drill - Tuesday, March 7, 9:45 a.m.

Jefferson Lab will participate in Virginia’s 2023 Statewide Tornado Drill on March 7, 2023

NEWPORT NEWS, VA – The U.S. Department of Energy's Thomas Jefferson National Accelerator Facility is delaying its monthly tornado warning siren test this month to participate in the Commonwealth of Virginia’s Statewide Tornado Drill on March 7, 2023, at 9:45 a.m.

As is typical, the siren test could last up to three minutes. The test will be of the wavering tone (also called high-low-high or 10-4-10). Depending on weather conditions at the time of the test, the siren could be heard by anyone within a 1.5-mile radius of the lab.

Jefferson Lab uses the siren to alert members of the lab community who are outdoors to "take cover" in the event of tornadoes and tornado warnings in the immediate vicinity. As a part of the statewide drill, Jefferson Lab staff members, visiting scientists and others have been directed to practice moving to their designated tornado shelter for the test and remain until the all-clear is given.

Questions about Jefferson Lab's tornado siren may be directed to its Communications Office at


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).

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