As of this week, all 14 outdoor warning sirens that the Cole County Commission approved purchasing have been installed.
Emergency Management Director Bill Farr said the work had been held up by bad weather.
"We're planning to do some sound testing because some citizens said they had trouble hearing the voice saying that this is a test," he said.
The monthly siren test still takes place at 4 p.m. on the first Thursday of the month.
At that time, instead of the old siren sounding, a voice will come over the speakers to say it was a test, followed by Westminster Chimes and then a voice saying the test has ended.
"We've got it set up now so that the only time the siren sound will go off is when there is a tornado threat," Farr said. "At least once a year, we will have to have the siren sound go off, definitely during the statewide tornado drill."
The county agreed to pay Meyer Electric $351,529.30 for the sirens, which works out to $25,109.25 per siren.
Communities such as St. Thomas, Russellville, Taos, St. Martins and Wardsville got sirens after agreeing to chip in money.
Sirens were also placed in unincorporated areas such as along Country Club Drive, Scott Station Road and Zion Road in an effort to reach as many people as possible.