The heat advisory for the East Bay Inland areas and Santa Clara Valley, including San Jose, was extended to 7 PM Saturday, keeping inland neighborhoods under a warm-weather alert through the evening. In Santa Clara, where World Cup action is expected to draw crowds, the forecast calls for an 88-degree high.
That timing matters because Saturday is set to be the hottest day of the stretch inland, with mid-90s expected away from the coast. The advisory covers the same day as the World Cup event in Santa Clara, where people will be dealing with a cooler number than the interior valleys but still a warm afternoon by Bay Area standards.
The heat does not arrive alone. A Coastal Advisory runs from 7 PM Saturday until 3 AM Tuesday, and a Beach Hazard Statement begins at 3 AM Sunday and lasts until 3 AM Wednesday, signaling a very different problem for people near the water. Saltwater flooding on roads is expected near the San Francisco Bay shoreline over the next few days, especially late at night, as tides climb as much as 2 feet higher than normal.
Those higher tides are expected to create minor flooding in low-lying parking lots, docks and coastal roads nightly through the middle of next week. Sunday night is expected to bring the absolute highest tide of the event, peaking around 11:10 PM at 1.9 to 2.0 feet above normal. Sunday will also be the coolest day of the weekend, with Livermore forecast to reach 92, but the shift to cooler air does not ease the shoreline risk, where the water level is set to do the opposite.
The combination is what makes this stretch unusual: inland heat Saturday, then cooler conditions Sunday, while the Bay shoreline faces its worst flooding window after dark. With the tides on track to be the highest summer tide ever recorded in the Bay Area, the main question for the next few days is not whether the water will rise, but how many times it will push onto roads and into the places people use every night.
