Excessive Heat Watch, Warning and Advisory Explained
What is the difference between weather watch, warnings, and advisories? Which message should you be most concerned with? These are frequently asked questions for those of us who are not weather experts. To help clarify the difference and severity of weather messaging, the National Weather Service (NWS) provides the following definitions:
Excessive Heat Watch - Potential for the heat index value to reach or exceed 110 degrees within 24 - 48 hours
Excessive Heat Warning - Heat index value expected to reach 110 degrees within 12 - 24 hours
Heat Advisory - Heat index value is expected to reach 105 - 109 degrees within 12 - 24 hours
The NWS has also created an experimental product to make it easier to understand heat impacts and risks since heat affects everyone differently. Access the experimental NWS Potential Heat Risks Map for a cool new tool to help you plan and make decisions for outdoor activities or heat sensitive populations.
Phoenix is StormReady
The City of Phoenix was officially recognized and designated as "StormReady" by the National Weather Service. The Office of Homeland Security and Emergency Management serves the community to ensure the Whole Community is prepared for extreme weather and water events. The City of Phoenix earned the StormReady designation by establishing partnerships and proactively preparing and planning for known weather vulnerabilities that threaten the community.