, Issued at 111 PM PDT Sat Oct 3 2026 (This evening through Sunday night)
The morning started off with stratus and reduced visibilities starting along the San Francisco coast to the Big Sur Coast. Unfortunately, this was short lived as clouds and fog mixed out right around sunrise, leading to sunny skies for much of the morning. Temperatures have responded accordingly, exceeding their initial forecast earlier this morning. Attempted to adjust them with the late morning forecast package update, but even then some sites will likely exceed their forecast highs. Looking to tomorrow, the forecast should be similar if not hotter meaning temperatures may need to be bumped for coastal locations. For now, opted to keep the Heat Advisory that was issued for Sunday the same and not include the southern portion of the Monterey Bay. However, should temperatures continue to exceed their forecast amount, they may need to be added tomorrow.
All that to be said, we're in the beginning of the heat wave and Moderate to Major HeatRisk is expected for Sunday. Make sure to beat the heat by practicing heat safety. You can visit weather.gov/safety for more information, but here a few quick handy tips.
* Stay hydrated and drink plenty of fluids. * Wear lightweight, light-colored clothing. * Reduce time spent outdoors or stay in the shade. * Never leave people or pets unattended in vehicles.
..issued at 111 PM PDT Sat Oct 3 2026 (Monday through next Friday)
The heat continues into the upcoming work week and with confidence increasing in where it'll happen, the Heat Advisory for the interior Bay Area and interior Central Coast has been extended until 10PM Wednesday. Additional areas may need to be added to it, with the highest confidence being for the northern Monterey Bay region. Elsewhere, like San Francisco, Marin, and the southern Monterey Bay, confidence remains moderate to low thus we opted to hold out on extending or adding these beyond Sunday. Nonetheless, it'll be hot, so please continue to take precautions and practice heat safety to avoid heat exhaustion and heat stroke.
Looking at the end of the week, around Friday and into next weekend, ensembles continue to trend towards cooler weather. The current forecast, if we don't stay in a ridging pattern, has much of the region in Minor HeatRisk. Highs continue to trend in the mid 60s to low 70s along the coast, the upper 70s to mid 90s for interior valley locations, and the 80s to mid 90s for higher elevations. Ensembles and guidance show either zonal flow or the beginning of troughing starting to form. Timing and placement is still a bit iffy as to when any sort of trough makes it here, but it's something
(18z TAFS) Issued at 1015 AM PDT Sat Oct 3 2026
High pressure strengthening over the region will result in continued VFR conditions throughout the day today with weak onshore flow returning by mid-afternoon before easing overnight. The greatest potential for sub-IFR conditions will be around the Monterey Bay terminals late tonight into early Sunday morning, however confidence is low to moderate.
Vicinity of SFO, VFR. Weak offshore winds currently with weak onshore flow expected by mid-afternoon. Winds ease overnight and into early Sunday morning with generally high confidence of VFR conditions persisting through the TAF period.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, VFR. Moderate drainage winds currently at SNS will shift onshore by early afternoon and prevail through this evening. The greatest potential for sub-IFR conditions will be at MRY late tonight and into early Sunday morning, less confidence for SNS. Any low clouds and/or fog that does develop is likely to dissipate by 15Z Sunday.
(today through Thursday) Issued at 1015 AM PDT Sat Oct 3 2026
Northerly to northwesterly breezes remain gentle to moderate into early week, allowing for slight to moderate seas to persist.
Ca, Heat Advisory until 10 PM PDT Sunday for CAZ006-502-528-529.
Heat Advisory until 10 PM PDT Wednesday for CAZ503-504-506-508- 510-512>518.
PZ, None.
