The city’s event notice schedules the refinery siren test for Wednesday, November 4, around 11:30 a.m. Chimes will precede and follow a two-minute tone; the full test should take no more than five minutes, despite the calendar’s longer reserved window.

The tone may be audible farther away than the chimes. Consider mentioning the planned test to a neighbor or visitor.

An unexpected warning still deserves attention. Check official emergency instructions rather than assuming every siren is a test. The city’s reminder is “Shelter. Shut. Listen.”