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SEVERE WEATHER INFORMATION

GENERAL INFORMATION » SEVERE WEATHER

OUTDOOR WARNING SYSTEMS

TORNADO SIRENS 

  • The Deerfield Police Department is responsible for the activation of these sirens.

  • The sirens are used to alert the public of severe weather that may include tornadoes, and the need for the public to seek proper shelter. 

  • There are 3 sirens located in Deerfield: Southwest- South Park School 1421 Hackberry, Southeast-Kates Rd / Corporate Dr, North- Tony’s Subs 1480 Waukegan.

  • The sirens are tested on the first Tuesday of every month at 10am.

  • The sirens may be activated under the following situations:

    • The National Weather Service issues a tornado warning for Lake County.

    • Sighting of a funnel cloud in Deerfield or a neighboring community by a trained weather spotter.

    • Upon orders by appropriate public safety personnel.

  • Upon activation of the sirens you should seek proper shelter. The National Weather Service recommends the following:

    • In a home or building move to the basement, if there is no basement, move to an interior room without windows, such as a bathroom or interior closet.

    • Avoid places with wide-span roofs such as auditoriums, cafeterias, large hallways, or shopping malls.

    •  While driving get out of your vehicle and seek shelter in a nearby building, if there is not a building available, lie flat in a ditch or low-lying area. Do not seek shelter under a bridge.

  • There is not an all-clear siren, so please rely on your radio or TV for updates on the weather situation. AM radio 720 (WGN), 780 (WBBM) or on the Web at www.nws.noaa.gov.  Comcast Cable will also interrupt programming with the emergency cable television override system with alerts regarding severe weather in the area.

UNLESS YOU HAVE AN EMERGENCY THAT REQUIRES ASSISTANCE, PLEASE DO NOT CALL 911 OR THE NON-EMERGENCY NUMBER TO INQUIRE ON WHY THE SIRENS HAVE BEEN ACTIVATED.

 

If you have any weather related questions you can call the National Weather Service 8am-8pm at 815-834-1435.  

LIGHTNING PREDICTION SYSTEM

 

  • The Deerfield Park Foundation has installed the Thor Guard Lightning Prediction System horns and lights at the parks, pools, and schools around town.

  • This system activates if atmospheric conditions are right for lightning to develop.

  • One long horn blast means there is a strong risk of lightning.

  • The strobe on top of the equipment will flash indicating a continuing risk of lightning.

  • Under both circumstances, please seek the shelter of a building or a vehicle.

  • Three short horn blasts and the ceasing of the strobe light indicates it is safe to return to the outdoors.

  • This equipment is tested on the first Tuesday of every month at 10am

UNLESS YOU HAVE AN EMERGENCY THAT REQUIRES ASSISTANCE, PLEASE DO NOT CALL 911 OR THE NON-EMERGENCY NUMBER TO INQUIRE ON WHY THE SIRENS HAVE BEEN ACTIVATED.