More than half of the City of Unalaska's tsunami sirens aren't functioning, according to city officials.
The city tested its tsunami sirens, which were purchased in 1996, on Wednesday. Three out of seven worked.
Following a number of earthquakes near Makushin Volcano earlier in the week — which prompted the Alaska Volcano Observatory to increase the volcano's alert level to "advisory" — local concern about Unalaska's emergency preparedness has been elevated.