CONTRA COSTA COUNTY, CALIFORNIA – After a brief respite from this week’s triple-digit weather, another round of potentially dangerous heat is headed for inland portions of the East Bay.
The National Weather Service has issued a heat advisory covering the East Bay hills and interior valleys from 10 a.m. Saturday, August 8, through 10 p.m. Sunday, August 9.
Temperatures are expected to reach the mid-90s to low 100s across much of the advisory area. The hottest communities could climb to approximately 105 degrees.
East Contra Costa County Will Be Hottest
Antioch and Brentwood could reach 105 degrees during the weekend, while temperatures in Walnut Creek, Danville, San Ramon and Livermore may climb into the low 100s.
The National Weather Service’s broader forecast for the East Bay interior valleys calls for highs between 95 and 100 degrees Saturday, followed by temperatures around 102 degrees Sunday.
Concord is forecast to reach approximately 98 degrees Saturday, while Livermore could hit 99. Temperatures may be even higher in parts of eastern Contra Costa County that receive less cooling from the marine layer.
The East Bay hills will also become unusually hot. Highs are expected to reach the upper 90s Saturday and approximately 100 degrees Sunday.
Communities closer to the bay should remain cooler, although temperatures could still reach the 80s and lower 90s in some shoreline locations Sunday.
Warm Nights Compound the Heat
The National Weather Service expects nighttime temperatures to remain in the mid-60s to low 80s across the wider advisory area, with the warmest overnight conditions likely in elevated locations.
The agency places the upcoming conditions in its moderate-to-major HeatRisk categories. At those levels, prolonged exposure can affect people who are sensitive to heat and may also pose a danger to otherwise healthy people participating in strenuous outdoor activities.
Older adults, young children, outdoor workers, people without effective air conditioning and those with certain medical conditions can be particularly vulnerable.
Residents should drink plenty of fluids, limit strenuous outdoor activity during the hottest part of the afternoon and never leave children or animals inside parked vehicles. Officials also recommend checking on relatives and neighbors who may not have adequate cooling.
Anyone who needs information about a nearby cooling center can call 211 or contact their city.
Cooler Conditions Expected After the Weekend
Temperatures should begin easing after the advisory expires Sunday night, although inland parts of the East Bay may remain warmer than communities closer to the water.
The National Weather Service currently expects highs ranging from the 80s to upper 90s in the interior valleys between Monday and Thursday. The East Bay hills should fall back into the lower 90s early in the week before cooling further by Thursday.
