Emergency Information Resources

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When hazardous weather threatens, the National Weather Service (NWS) issues various alerts to help the public stay informed and safe. These alerts follow a standardized three-tiered system designed to communicate the severity and timing of a potential event.

The National Weather Service uses specific terms—Advisory, Watch, and Warning—to define the level of risk. Understanding these terms are essential for knowing when to prepare and when to act. You can find the comprehensive list of all NWS alert types and their definitions at the: National Weather Service website.

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Alert Level Meaning Required Action
Warning Take Action! A hazardous event is occurring, imminent, or likely. It poses a threat to life or property. Seek shelter immediately or follow emergency instructions.
Watch Be Prepared! Conditions are favorable for a hazardous event. The risk has increased, but timing and location are still uncertain. Check your supplies, monitor weather updates, and have a plan ready.
Advisory Be Aware! Less serious conditions are expected that may cause significant inconvenience. If caution is not exercised, it could lead to life-threatening situations. Exercise caution and stay informed about changing conditions.

How Alerts Are Delivered

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Television and radio remain two of the most effective tools the National Weather Service (NWS) uses during emergencies, especially because they reach large audiences quickly and continue to function when internet or cellular service is limited.

The following local media outlets and apps provide up-to-date weather information for the Gwinnett County area.

Stay Connected

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The NWS utilizes several high-tech systems to ensure you receive life-saving information wherever you are:

  • Wireless Emergency Alerts (WEA): These are emergency messages sent directly to your mobile device by authorized government agencies. They look like text messages but include a unique tone and vibration.

  • NOAA Weather Radio (NWR): A nationwide network of radio stations broadcasting continuous weather information directly from the nearest NWS office.

Wireless Emergency Alerts (WEA) are free messages sent to your mobile device to warn about severe weather and other local safety threats. These alerts appear like a text message but use a unique sound and vibration to get your attention—even during calls—making them especially helpful for people with hearing or vision impairments.

The Gwinnett County Office of Emergency Management has the capacity to utilize this feature on cell phones to alert users when an imminent threat to safety occurs in an area. The County will send wireless emergency alerts to all wireless phones that are in proximity to an emergency in Gwinnett. Alerts will include the time and type of alert, and any action residents and visitors in the affected area should take. The messages will not duplicate AMBER alerts or extreme weather messages from the National Weather Service.

No app or subscription is needed, and most smartphones already have them enabled.

To check if your Wireless Emergency Alerts are on and active, go to:

Android:

Settings à Scroll down to Safety and Emergency à Wireless Emergency Alerts

iPhone:

Settings à Notifications à scroll down to “Government Alerts”

A NOAA Weather Radio activates an audible alarm followed by a message when the National Weather Service issues a weather warning. NOAA Weather Radios can be purchased at retail stores or online. Periodically, Gwinnett County Office of Emergency Management will have an inventory of weather radios made available to Gwinnett County citizens free of charge.

For more information about NOAA Weather Radios, please visit www.weather.gov/nwr. To contact Gwinnett County about possibly receiving a complimentary weather radio, please call 770.513.5600 or email ema@gwinnettcounty.com.

Some radios may have a jack for connecting optional accessories such as a strobe light or bed shaker for people who are deaf or hard of hearing.

Alert Gwinnett

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When every second counts, Alert Gwinnett keeps you and your family one step ahead.

This free notification system delivers real-time emergency alerts straight to your phone — giving you the information you need to stay safe and prepared.

Whether it’s a severe thunderstorm, flash flood, tornado warning, or a man-made emergency, Alert Gwinnett sends residents official updates directly from the Gwinnett County Office of Emergency Management and the National Weather Service.

This service is customizable, giving you the power to choose the categories that are important to you and your family.


Why should you sign up?

  • Instant Notifications – Get alerts by text, or phone the moment emergencies happen.
  • Weather and Emergency Updates – Receive critical information about natural and man-made disasters.
  • Personalized for You – Choose the alerts and locations that matter most to your household.
  • Trusted Source – Alerts come directly from Emergency Management professionals. 

Protect your loved ones by staying connected to the information that matters most.

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Or download the app.

Download Smart911 app on Google Play  Download Smart911 app on Apple App Store