MANITOWOC, WI (WTAQ) - An emergency siren is out of commission after it went off unexpectedly Monday morning in Manitowoc.
The siren at Stangel Elementary School sounded twice between 6:30 and 6:45 a.m.
According to Manitowoc Fire Chief Todd Blaser, the city's 10 sirens are tested every Saturday.
City sirens are activated with a changing tone for one minute in the event of a severe thunderstorm warning; three straight minutes in a single tone for a tornado warning. The rest of Manitowoc County's sirens will only sound in the event of a tornado warning.
Blaser told FOX 11 that city electricians have removed the defective siren's electronic components and are sending those parts back to the maufacturer.