Riverside County Heat Risk Forecast and Cooling Stations
HeatRisk is a forecast of how hazardous any upcoming hot weather is expected to be over the next seven days, across a 2.5-kilometer grid that spans the contiguous United States. The color of an area indicates which members of the population are expected to be at risk for heat-related health impacts, as follows:
| 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. |
The forecast is determined by a model that includes upcoming daytime high and nighttime low temperatures, the relationship between minimum temperature and dewpoint, and time of year, as well as historical data that includes heat-related deaths, historical temperatures, and climate record deviations for each location. Further information and nationwide HeatRisk forecasts are available at https://www.wpc.ncep.noaa.gov/heatrisk/. Detailed methods may be found at https://www.youtube.com/watch?v=o2JmBSufBU4.