Jefferson Lab Cancels its Monthly Siren Test

NEWPORT NEWS, VA – The Thomas Jefferson National Accelerator Facility has cancelled the monthly test of its tornado warning siren for today. The cancellation of the test is due to the severe weather moving across the region today, which includes a National Weather Service Tornado Watch that extends until 1 p.m. EDT. If you are in or near the Jefferson Lab vicinity and hear the tornado warning siren activate today, take cover immediately.

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



Contact: Deb Magaldi,, 757-269-5102


Jefferson Science Associates, LLC, a joint venture of the Southeastern Universities Research Association, Inc. and PAE Applied Technologies, manages and operates the Thomas Jefferson National Accelerator Facility, or Jefferson Lab, for the U.S. Department of Energy's Office of Science.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