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Weather Updates

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Important Numbers to Know

  • Emergencies: Call 911 immediately! 

  • Power Outages and Electrical Hazards:
    • Report outages directly to MLGW at 901-544-6500
    • Check real-time updates at mlgw.com/OutageCenter.
    • Downed power lines? Stay clear and call MLGW at 901-528-4465.

  • Storm Damage and Safety Concern: Tree limbs blocking roads? Traffic signal issues?
    Call Police Non-Emergency at 901-853-3207.
  • Water and Sewer Emergencies: Call Public Services at 901-457-2800; after hours call Police Non-Emergency: 901-853-3207

Updates are posted as needed during severe weather events here:

Outdoor Siren Reminder

Information about when outdoor sirens are used.
Post Date:03/09/2026 12:12 PM

We want to remind everyone how Collierville’s outdoor warning sirens are used. Hopefully, they won’t be needed, but now is a great time to refresh everyone on their purpose.

When Sirens ARE Activated:

  • A tornado warning is issued by the National Weather Service, and any part of Collierville is within the warned area.
  • Warnings are based on geographic zones (polygons)—so sirens may sound in other parts of Shelby County while Collierville remains silent if we are not in the warning zone.
  • Sirens may also be used for major disasters or emergency alerts affecting the area.

What Sirens DO NOT Mean:

  • They are not activated for severe thunderstorm warnings.
  • They are outdoor alerts only and may not be heard indoors.

Weekly Siren Testing:
Every Saturday at Noon, unless cloudy or inclement weather is expected to prevent confusion.

 

Get Reliable Weather Alerts from Multiple Sources:

  • Alert Collierville - Sign up for official emergency notifications from the Town. Ways to sign up: 
  • Weather apps
  • NOAA weather radios
  • Local news

outdoor siren

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Receive emergency and non-emergency communication from the Town

Register for Alert Collierville - emergency weather and community alerts to your cell phone and/or email 

Ways to sign up: 

Sign up for weather email notifications regarding road conditions, Town closures, and other non-emergency updates

Weather communication is posted on the Town of Collierville's social media on Facebook, Twitter (X), and Nextdoor