Warning Siren Activation

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Outdoor Warning Siren Activation

The City of Joliet will activate the Outdoor Warning Sirens for the following criteria:

  1. The City of Joliet is under a Tornado Warning issued by the National Weather Service.
  2. The City of Joliet is within a Polygon issued by the National Weather Service.
  3. Sustained Winds greater than 65 MPH are being experienced.
  • Tornado Warning: A Tornado has been reported or is highly likely to occur based on Doppler radar signatures.
  • Polygon: A specific Location most likely to be effected by Severe Weather.
  • 65MPH: This wind speed is on the lower side of an EF “0” Tornado.

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