Sign up for emergency alerts

Stay informed in a disaster by signing up for AC Alert emergency notifications. This is the most important action you can take to prepare for an emergency.

Need to know

  • AC Alert is a free service (message and data rates may apply)
  • It only takes a few minutes to sign up
  • Get alerts from any city in Alameda County

Before you start

In a disaster, we’ll use AC Alert to send critical safety information. This includes:

  • Earthquakes
  • Fires
  • Severe weather
  • Unexpected road closures
  • Missing persons
  • Evacuations of buildings or neighborhoods

Piedmont and Alameda County officials will send urgent information by phone, text, and email. Alerts that are not time-sensitive are sent by email only.

You can also download the Everbridge app to get push notifications for non-urgent alerts:


1. Sign up at the AC Alert website

Visit the AC Alert website to create or update your account.

2. Add your location

Add a primary location (typically your home address). In a disaster, Piedmont and Alameda County officials target alerts to subscribers in specific geographic areas.

You can also add more locations, such as where you work or your child’s school. This will ensure you get important alerts relevant to areas you or your loved ones frequent.

3. Add your contact information

Add a primary phone number and email address.

You can also add your work phone, work cell phone, and any other numbers you use. It's a good idea to add as many contact methods as you can, to ensure you get critical information no matter where you are when a disaster happens.

4. Select the alert subscription lists you want to subscribe to

Registering a location with AC Alert will allow us to send you critical, time-sensitive information and instructions in an emergency.

Sometimes, officials will use AC Alert to send non-urgent information for general awareness, on topics like road closures, red flag warnings, or significant weather forecasts. These alerts are sent by email only to subscription lists .

  • Review the list and check boxes next to the subscriptions you want alerts from.
  • Check the "Piedmont Traffic Alerts" box to receive road closure notification from the City of Piedmont.
  • You may also want to select cities where you spend a lot of time in, such as where you work or where your kids go to school.

5. Disregard the "Additional Information" page

Skip the question asking you to select church, care facility, environmental facility, or community organization.

What’s next

Add these phone numbers to your contacts:

  • Alameda County emergency alerts: (925) 560-5950
  • City of Piedmont emergency alerts: (510) 420-3000

Keep your information current

If any of your contact information (address, phone number, email) changes, update your account.

Other alert systems

You may also want to sign up for alerts from:

If you work in another County, sign up for their alerts too.

Bookmark other sources of trustworthy information

During a disaster, information can change quickly. Misinformation can spread quickly, especially on social media and online forums. Learn how to find official information you can trust during an emergency.

Get help