Res21 16010 final - Laserfiche WebLink

Browse Search

Severe Weather High-Heat Days All of San Mateo County is projected to experience more high-heat days (above 100 °F) in the future. Air temperatures are expected to increase by 5 °F by 2070 due to climate change. Climate Ready developed extreme heat models using data from Cal Adapt and the California Department of Water Resources. The data were analyzed to identify changes between a baseline year of 1995 and projected changes due to climate change over a 35-year period (through 2030) and a 75-year period (through 2070). The heat-specific datasets were integrated into a model that assessed how temperature increases would negatively impact communities, key infrastructure, and facilities across the County. Table 14-5 shows the average number of high-heat days by jurisdiction as observed in 1995 (baseline year) and projected for 2030 and 2070. Modeling suggests the average number of high heat days will increase for many jurisdictions across the county, some by as many as four days. Table 14-5. High-Heat Days per Year in San Mateo County High-Heat Days per Year 1995 2030 2070 Atherton 2 3 6 Belmont 1 2 4 Brisbane 1 1 1 Burlingame 1 1 1 Colma 1 1 1 Daly City 1 1 1 East Palo Alto 2 3 6 Foster City 2 3 6 Half Moon Bay 1 2 3 Hillsborough 1 1 2 Menlo Park 2 3 6 Millbrae 1 1 1 North Fair Oaks* 2 3 6 Pacifica 1 1 1 Pescadero* 2 3 5 Portola Valley 1 2 4 Princeton 1 2 3 Redwood City 2 3 6 San Bruno 1 1 1 San Carlos 2 3 5 San Mateo City 1 2 4 South San Francisco 1 1 1 Woodside 2 3 5 Unincorporated County 1 2 3 Average 1 2 3 *Unincorporated San Mateo County The greatest changes in number of high heat days from 1995 to 2070 are projected to occur in Atherton, East Palo Alto, Foster City, Menlo Park, North Fair Oaks, and Redwood City. Impacts in these areas could be especially 14-13