The National Weather Service in San Francisco has extended a Heat Advisory through Saturday throughout various parts of the Bay Area, including the North Bay Mountains, interior portions of the East Bay, South Bay, and Central Coast. "High temperatures will generally be in the middle 80s to lower 100s," the NWS San Francisco stated. They also emphasized the importance of never leaving people or pets in vehicles, suggested limiting outdoor activities during peak heat times, staying hydrated, and taking breaks to cool down.
Residents are advised to stay hydrated and to avoid strenuously exerting themselves during the hottest part of the day if they find themselves outside in the advisory areas. According to the latest update from the National Weather Service, "Heat advisories remain in effect through this evening for interior locations," as conditions remain dry and hot. However, some respite is expected soon, as "Temperatures gradually cool through the weekend, back to seasonal normals by next week."
Meanwhile, the marine layer has a slight expansion, which could bring about some patchy fog along the coast, and there is a slight chance of showers over the coastal waters. On the aviation front, "Satellite shows low level stratus extending across much of the Bay Area and Central Coast," the NWS noted, setting expectations for IFR-LIFR CIGs to clear around mid-morning for most interior airports, but with less likelihood for coastal areas like Half Moon Bay and Monterey.
As the weekend progresses, a transition from the grip of the high pressure system to cooler temperatures is on the horizon. "The grip the ridge of high pressure had on the region begins to ease as an upstream trough begins to approach," the NWS explains, signaling a gradual easing of the hot conditions. But Sunday is still likely to see temperatures hitting the triple digits for the far interior locations.
The marine forecast also indicates that winds have dropped across the coastal waters, with only a moderate to fresh northwesterly breeze persisting into the next week. Additionally, for those tracking the fire situation, "Hot and dry conditions persist through at least Saturday due to high pressure over the region, creating elevated fire weather conditions across the interior," the NWS mentions. This includes the Pickett Fire, where active behavior stemming from the topography and thermal belts was reported, though thankfully with light winds and mostly terrain-driven conditions.
