GHS/OCD and NBG to Conduct Routine Testing of Advanced Warning Systems

GHS/OCD and NBG to Conduct Routine Testing of Advanced Warning Systems

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD) and U.S. Naval Base Guam (NBG) will conduct routine testing of the vital communication and advance warning system sirens, respectively, on Tuesday, July 7, 2020, starting at 3:15 p.m.

GHS/OCD will test the nineteen All Hazards Alert Warning System (AHAWS) sirens in conjunction with NBG monthly routine testing of the “Giant Voice (GV)” sirens.

Residents, visitors and motorists surrounding the AHAWS sirens and GV speakers can expect to hear pre-scripted voice messaging announcing the start and end of the test, and ten-seconds of the “Alert” tone, which can be heard here:

Future tests of the AHAWS sirens will be conducted on a monthly basis, in conjunction with NBG and will typically fall on the first Tuesday of each month, unless it falls on an observed holiday.

The following are a list of AHAWS siren sites to be tested:

1.     GHS/OCD facility, Agana Heights
2.     Agat Marina
3.     JFK High School
4.     Talofofo Elementary School
5.     Asan Mayor's Office
6.     Pago Bay A-Frame South End
7.     Inarajan Elementary School
8.     Yona Mayor's Office
9.     Ft. Soledad, Umatac
10.  GWA Pump Station, Merizo
11.  Ija Agricultural Station, Inarajan
12.  Port Authority of Guam
13.  Agat Senior Citizen's Center
14.  Hotel Nikko Guam
15.  Tamuning Mayor’s Office
16.  George Washington High School
17.  Piti Village
18.  GWA site, Malojloj
19.  Ricardo J. Bordallo Governor’s Complex, Adelup

For more information, contact GHS/OCD Public Information Officer, Jenna G. Blas at (671) 478-0208 or via email at or NBG Public Affairs Officer, Theresa Merto Cepeda at (671) 339-2663 or via email at


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