Topic overview
In brief
- The National Weather Service has issued a heat advisory for inland areas of the Bay Area starting Saturday morning.
- A Coastal Flood Advisory is in effect for low-lying areas along San Francisco Bay, with minor flooding expected during high tides.
- Residents are urged to take precautions against heat and flooding risks this weekend.
Summary
In the United States, the National Weather Service has issued several weather advisories for the San Francisco Bay Area and Central Coast for the second weekend of August 2026. These advisories include a heat advisory for inland areas and a coastal flood advisory for low-lying regions. The heat advisory is set to begin at 10 a.m. on Saturday and will last until 10 p.m. on Sunday, with daytime temperatures expected to reach the mid-90s to low-100s. Nighttime lows will range from the mid-60s to mid-70s. The areas affected by the heat advisory include the Sonoma coastal range, North Bay interior mountains, East Bay interior valleys, Santa Clara Valley, and Santa Cruz mountains, as well as parts of the Central Coast such as the Santa Lucia Mountains and Los Padres National Forest. Forecasters have warned that these temperatures will be 10-15 degrees above normal, creating near-critical fire weather conditions due to the hot and dry climate. Residents are advised to stay hydrated, wear lightweight clothing, and limit strenuous activities during the hottest parts of the day. Additionally, precautions should be taken to protect young children and pets from heat-related dangers.
Alongside the heat advisory, a Coastal Flood Advisory has been issued for low-lying areas along San Francisco Bay, San Pablo Bay, and Monterey Bay. This advisory is set to begin at 5 p.m. on Friday and will continue through 2 a.m. on Thursday, August 13. Minor flooding is expected during the highest high tides, which will occur during the evening and overnight hours. The San Francisco tidal gauge predicts high tide to be 1 foot above normal at 6:55 p.m. on Friday, 1.3 feet above normal at 8 p.m. on Saturday, and 1.6 feet above normal at 9:02 p.m. on Sunday. The timing of these high tides may vary by up to 90 minutes depending on the specific location. The flooding risk is exacerbated by a combination of thermal expansion and accumulated sea level rise, which could lead to coastal trails being flooded and access to low-lying areas being cut off. Residents are urged to avoid driving around barricades or through flooded areas and to take measures to protect their properties from potential flooding.