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Change in the number of days per year with a maximum humidex value over 90° relative to 1980-2009. Humidex is a measure of "experienced" temperature, and includes measures of both temperature and humidity.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The map shows the change in annual 90°F maximum humidex days, or the average number of days in a year with a maximum humidex greater than 90°F in a 30-year period compared to the 1980-2009 average. The humidex is a measure of experienced heat conditions, and takes into consideration both temperature and humidity. The change in the number of 90°F maximum humidex days is an indicator of stress on public health. Darker reds show larger increases in the number of 90°F maximum humidex days. Values shown are the median of multiple climate model projections. Lower elevation areas across Washington are expected to see increases in the number of annual 90°F maximum humidex days. </SPAN><SPAN STYLE="font-weight:bold;">Potential Impacts ··· </SPAN><SPAN>Emergency Management: More frequent extreme daytime heat events are expected to increase the demand for emergency services to plan, prepare, and respond to human health impacts. Extreme heat may also impact emergency services due to transportation and travel disruptions such as warped and buckling pavement on roads. Health and Well-being An increase in the number of days with a maximum humidex above 90°F is expected to increase heat-related deaths, illness, and hospitalizations.</SPAN></P></DIV></DIV></DIV>
Raymond, C., M. Rogers, 2022. Climate Mapping for a Resilient Washington. Prepared by the Climate Impacts Group, University of Washington, Seattle and Research Data & Computing Services, University of Idaho, Moscow.
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