As the Bay Area braces for a surge in temperature, the National Weather Service (NWS) San Francisco Bay Area has issued a synopsis indicating a high-pressure system moves in from the west, resulting in dry conditions and a warming trend early to mid-week, with a slight cooling trend expected to develop late in the week. In practical terms, this means residents can expect daytime highs to range from the 70s and 80s along the coast to the 90s inland, according to the National Weather Service. The interior regions could see temperatures about 5 to 10 degrees above normal for this time of year.
The National Weather Service advises that temperatures cool back to the 50s to around 60F in lower elevations for those hoping to reprieve from the heat at night. However, due to the lower-level temperature inversion, it'll remain milder in the hills and mountains. Reflecting on the potential public health impacts, the NWS Bay Area warns that a "Moderate HeatRisk covers parts of the interior Tuesday-Wednesday" as the high pressure continues to dominate the regional climate and compress the marine layer.
The specifics of the forecast add detail to the broader trends. For instance, today's conditions are described as "Sunny, with a high near 77," with a light breeze expected in the afternoon. This is a subtle change from the moderate warmth we are accustomed to in late August. But Tuesday and Wednesday are forecasted to be slightly cooler, if only by a degree or so, with "a high near 76" and "a high near 75," according to the National Weather Service.
The gradual trend towards normalcy becomes more apparent as the week progresses, "with near normal highs," but with "some uncertainty as to timing, etc." as per the National Weather Service synthesis. The Mariners aren't left out of the equation, either. Those heading to sea can anticipate a gentle to moderate NW breeze over the inner waters and bays, and an NW swell will cause rough seas to build by Tuesday over the outer waters. Vigilance along the coast and at sea will be especially important during these fluctuating conditions.
