Outdoor Warning System

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Warning Sirens

Did you know warning sirens are only intended to reach those outdoors? Modern advances in building and window construction continually improves the level of sound entering our home, but doesn't allow outdoor warning sirens to adequately alert those indoors. For this reason, we recommend you consider having a weather radio at home tuned to receive alerts specific to your area.

In reference to siren activation criteria, Dallas County has varying criteria, please see below for specific jurisdictional information. 

The following communities use the below activation criteria; Dawson, Perry, Bouton, Woodward, Minburn, Dallas Center, Linden, Redfield, Adel, Dexter, Earlham, DeSoto, Van Meter.

  • Confirmed Tornado
  • Tornado Warning


The cities of Granger, Grimes, Urbandale, Clive, Waukee and West Des Moines follow the Polk County Emergency Management Activation Policy.

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