NWS HeatRisk
Highlighting Impactful Heat in the Seven Day Forecast
NWS HeatRisk is supplementary to official NWS heat watches, warnings, and advisories. It provides guidance for decision makers and those who are sensitive to heat . For more information, view the tabs above the map.
Category Risk of Heat-Related Impacts
Green
0		 Little to no risk from expected heat.
Yellow
1		 Minor - Primarily affects those who are extremely sensitive to heat and without cooling/hydration.
Orange
2		 Moderate - Affects those who are sensitive to heat, especially those without cooling/hydration, and some health systems and industries.
Red
3		 Major - Affects anyone without cooling/hydration as well as health systems and industries.
Magenta
4		 Extreme - Rare and/or long-duration extreme heat with no overnight relief affecting anyone without cooling/hydration as well as health systems, industries, and infrastructure.
HeatRisk 0-Little to None 1-Minor 2-Moderate 3-Major 4-Extreme
Population Impacted