Understanding Weather Alerts: Watches, Warnings, and Advisories

When severe weather threatens, the National Weather Service (NWS) issues alerts to inform the public. These alerts fall into three main categories: Watches, Warnings, and Advisories. Understanding each can help you take appropriate action to protect yourself and others.

What Is a Weather Watch?

A Watch is issued when conditions are favorable for a specific type of hazardous weather event. It indicates that there is a risk of dangerous weather in the immediate future, but the exact location and timing are uncertain. For example, a Severe Thunderstorm Watch means that thunderstorms capable of producing severe weather are possible in the area. When a watch is in effect, it's important to stay informed and be prepared to take action if conditions worsen. (weather.gov)

What Is a Weather Warning?

A Warning is issued when a hazardous weather event is occurring, imminent, or has a very high probability of occurring. Warnings indicate a serious threat to life and property. For instance, a Tornado Warning means that a tornado has been sighted or indicated by weather radar, and immediate action is necessary. When a warning is issued, take immediate steps to protect yourself and others. (weather.gov)

What Is a Weather Advisory?

An Advisory is issued when a hazardous weather event is occurring, imminent, or likely, but is less severe than a warning. Advisories are for conditions that cause significant inconvenience and, if caution is not exercised, could lead to situations that may threaten life or property. For example, a Winter Weather Advisory may be issued when snow or ice is expected to cause travel difficulties. While advisories are less severe than warnings, they still require attention and caution. (weather.gov)

How Are These Alerts Issued?

The NWS issues these alerts based on specific criteria:

• Watch: Issued when the risk of a hazardous weather or hydrologic event has increased significantly, but its occurrence, location, and/or timing is still uncertain. (weather.gov)

• Warning: Issued when a hazardous event is occurring or has a very high probability of occurrence. (weather.gov)

• Advisory: Issued when a hazardous event is occurring or has a very high probability of occurrence, but is less severe than a warning. (weather.gov)

How to Stay Informed

To stay informed about weather alerts:

• Monitor Official Sources: Regularly check the NWS website or local news outlets for updates.

• Use Weather Apps: Many apps provide real-time alerts for your area.

• Enable Wireless Emergency Alerts (WEA): These alerts are sent directly to your mobile device.

• Listen to NOAA Weather Radio: Provides continuous broadcasts of official Weather Service information.

How to Respond to Alerts

• Watch: Stay informed and be prepared to take action if conditions worsen.

• Warning: Take immediate protective actions to ensure safety.

• Advisory: Exercise caution and plan accordingly to avoid inconvenience or potential hazards.

By understanding the differences between watches, warnings, and advisories, you can make informed decisions and take appropriate actions to protect yourself and others during hazardous weather events.