, Issued at 1211 PM PDT Fri Aug 7 2026 (This evening through Sunday night)
The warming trend will begin today and persist through the weekend as high pressure over the Desert Southwest builds westward. Thus, Heat Advisories remain in effect for all of the Interior Bay Area and Central Coast from 10 AM Saturday through 10 PM Sunday. The exception is the North Bay Valleys where we have temperatures forecast to be in the mid 80s to mid 90s. However, places such as Cloverdale is forecast to be the hottest and are expected to exceed 100 deg F. Temperatures under the Heat Advisory are forecast to warm into the mid 90s and up to 105 deg F in the warmest interior locations where the most widespread moderate to isolated major HeatRisk are present. Overnight lows are also forecast to be warm in the mid 60s in the hills just above the marine influences to low 80s (especially in the higher elevations). Maximum temperatures closer to the coast are forecast to be in the 60s to mid 70s thanks to the continued onshore flow and marine influences. Overnight lows near the coast are largely forecast to be in the 50s over the weekend.
During this weekends heat event, remember:
* Stay hydrated and drink plenty of fluids. * Wear lightweight and light-colored clothing. * Reduce time spent outdoors or stay in the shade. * Never leave people or pets unattended in vehicles. * Use sunscreen if going to the coast or the pool.
Minor coastal flooding is also expected at the time of peak high tide (evening/overnight) for bayshore locations along the San Francisco, San Pablo, and Monterey Bays this evening through next Thursday morning. Please see the CFW product we have out for additional details.
..issued at 1211 PM PDT Fri Aug 7 2026 (Monday through next Thursday)
Temperatures begin a cooling trend on Monday as the ridge starts to flatten, yet the interior will still be quite warm. Northerly winds are forecast to increase and will result in hazardous conditions to small craft early next week as well, especially across the northern waters. Temperatures are then forecast to cool to below seasonal averages late next week as troughing develops off of the West Coast.
(06z TAFS) Issued at 952 PM PDT Fri Aug 7 2026
IFR-LIFR stratus is expanding into the Sonoma County valleys, the SF Bay, the Monterey Bay region, and the Salinas Valley with expansion expected to continue into the night. The current forecast calls for gradual compression of the marine layer through the night as an upper level ridge expands over the region. Confidence in stratus impacts at SJC has lowered dramatically, and not expecting any stratus to make it into the interior East Bay. Stratus will retreat to the immediate coast through Saturday morning with breezy onshore winds resuming in the afternoon. Most stratus development on Saturday evening falls after the end of the 24-hour TAF period.
Vicinity of SFO, Moderate confidence that an IFR-LIFR ceiling will develop over the terminal through the night, with some high resolution model output depicting the stratus deck deflected to the north of the terminal. Confidence is higher at OAK. Stratus dissipates over the post-sunrise hours Saturday morning and breezy west-northwest winds develop in the afternoon and evening hours. Low confidence of stratus impacts to the terminal Saturday night through Sunday morning.
SFO Bridge Approach, Lower confidence of stratus impacts compared to the immediate terminal area. Otherwise similar to SFO.
Monterey Bay Terminals, IFR-LIFR stratus persists through the night and into Saturday morning. Stratus will retreat to the immediate coast around 16-18Z and breezy northwest winds develop in the afternoon hours. Moderate confidence that stratus returns early Saturday evening.
(tonight through next Thursday) Issued at 952 PM PDT Fri Aug 7 2026
Moderate seas gradually build to rough seas up to 12 feet as northwest winds increase to fresh to strong by Saturday into the middle of the week. Seas and winds remain elevated through the middle of next week. Embedded near gale force gusts are possible across the outer northern coastal waters. A long period southerly swell at 15 to 17 seconds persists through the weekend.
Ca, Coastal Flood Advisory until 2 AM PDT Thursday for CAZ006-506- 508-529-530.
Heat Advisory from 10 AM Saturday to 10 PM PDT Sunday for CAZ503- 504-510-512>518.
PZ, Small Craft Advisory from 3 PM Saturday to 9 AM PDT Sunday for Pt Arena to Pt Reyes 10-60 NM.
