The National Weather Service (NWS) issued a heat advisory for Walnut Creek and the East Bay Interior Valleys, warning temperatures could climb 10 to 20 degrees above normal Wednesday and Thursday.
The advisory, issued Monday, Sept. 7, took effect at 10 a.m. today, Wednesday, Sept. 9, and runs through 10 p.m. Thursday, Sept. 10. Interior areas could see highs reaching into the triple digits, according to Claycord, while coastal areas are forecast to hit the low 90s. Overnight lows will sit in the mid-60s to mid-70s, offering little relief.
The advisory stretches across the Bay Area and Central Coast, covering counties from Monterey to Mendocino.
The NWS warned that the heat poses risks for people without adequate cooling or hydration, with possible impacts on health systems and heat-sensitive industries. The agency urged residents to drink water frequently and to bring water to neighbors who may be vulnerable.
What to do
The NWS recommended shifting outdoor exercise and yard work to early morning or evening hours. Residents should watch for symptoms of heat illness and take action immediately if they appear.
Do not leave children or pets in parked cars. Vehicle interiors can reach deadly temperatures within minutes, the NWS stated.
Stay informed
Contra Costa County residents can sign up for emergency alerts through the Community Warning System at cwsalerts.com. Emergency information is also available on KQED 88.5 FM, KCBS 106.9 FM and KCBS 740 AM.
Residents who need assistance can contact the Contra Costa County Office of Emergency Services at (925) 655-0100.
