Recorded in Fenton, Missouri at the St. Louis & Jefferson County line at 11am for the normal countywide Whelen 2900-series test. At least 8 different sirens are heard in this normal double activation windup. The colder air set up a terrific atmospheric inversion, thus trapping and enhancing sound from many sirens.
- Күн бұрын
St. Louis County, MO siren test/ambience 06 JAN 2020
- Рет қаралды 4,097
Пікірлер: 8