Issued at 900 AM PDT Sat May 30 2026
Widespread low clouds reached well into most valley locations across the Bay Area and Central Coast overnight and into early this morning. These clouds have been slow to dissipate this morning, yet still expecting them to dissipate by late morning and into the early afternoon. Thus, temperatures are likely to warm into the upper 50s to middle 60s in northwest facing coastal areas while the interior warms into the low-to-upper 70s. The warmest interior spots have a greater than 60% probability of reaching 80 deg F, such as the southern Salinas Valley and far interior East Bay (Byron and Brentwood to name a few). Keeping a close eye on the potential for stratus to return overnight and into Sunday morning. Latest guidance suggest the greatest potential is around the Monterey Bay region and along the San Francisco Peninsula, and less so into the interior valleys.
RGass
, Issued at 1201 AM PDT Sat May 30 2026 (Today and tonight)
Quiet weather with weak progressive ridging aloft overnight, becoming primarily zonal through the day today will help lift temperatures close to normal for this time of year. The marine layer has returned and is well established for the remainder of the overnight through mid-morning. Coastal areas should see the marine layer lift by late morning with mostly sunny skies area wide for the remainder of the afternoon and early evening. The marine layer will once again fill back in later tonight.
..issued at 1201 AM PDT Sat May 30 2026 (Sunday through Friday)
The progressive and relatively weak longwave synoptic pattern across our latitude will keep the weather quiet, temperatures similar on a day-to-day basis Sunday through Thursday with slightly above normal temperatures and breezy diurnal wind fluctuations with onshore flow. Confidence continues to increase for a more organized and deeper synoptic troughing pattern for the end of next week and beyond. Although it appears any rain would be well to our north attm, the pattern would keep temperatures below seasonal averages.
(18z TAFS) Issued at 1046 AM PDT Sat May 30 2026
Stratus is gradually retreating this morning, with interior East and South Bay valleys cleared out. Along the coast, in the North Bay valleys, and across the Central Coast valleys, IFR to MVFR cigs generally prevail. Look for these low clouds to continue to mix out through the rest of the morning and into the early afternoon hours leaving us VFR conditions. Quiet and mainly clear skies are expected through the afternoon and into the evening hours. The question for tonight will be if the stratus returns. Guidance tends to favor mostly VFR conditions tonight, with the exception being along the coast and perhaps in the North Bay valleys. Opted to hint at the potential for lower cigs for the North Bay terminals rather than fully socking them in. Any low clouds that develop should erode by mid morning.
Vicinity of SFO, Satellite observations show a bank of stratus parked over the western portion of the range ring, while skies over the terminal remain VFR. We're expecting VFR conditions to prevail through the TAF period, though some guidance hints at low clouds trying to form just before or around sunrise. Looking at soundings and hi-res guidance, opted to hint at the low clouds rather than dropping cigs to MVFR or IFR. Any clouds that do form should mix out by mid to late morning. Outside of the clouds, look for onshore flow to increase this afternoon and evening. Sustained wind speeds will be around 12-15kt with gusts up to 25kt through the early evening. Winds begin to decrease around or shortly after sunset, falling to 10kt or less between 5-8Z. Medium confidence in the forecast.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, The stratus around Monterey Bay is the most fascinating as satellite observations haven't really sown any improvement. Models are not handling this well, making the forecast tricky. Opted to be slightly optimistic with the forecast, having cigs lift to MVFR conditions followed by a brief stint of VFR conditions. Unfortunately, there is the chance we could remain socked in all day though cigs could lift to MVFR heights for KMRY and KSNS. Regardless if this happens or not, stratus is expected to return tonight. Low to medium confidence in the forecast from now through the early evening. Medium to high confidence in the forecast for tonight.
(today through Thursday) Issued at 900 AM PDT Sat May 30 2026
Northerly winds will increase today with moderate to fresh breezes across the near shore waters and fresh to strong breezes offshore. Occasional gale force gusts will occur in the far outer waters, and the coastal jets to the south of Point Arena and along the Big Sur Coast. Seas will build in response and become rough leading to hazardous conditions over the coastal waters through the weekend and into Monday morning.
Ca, None. PZ, Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for Mry Bay.
Small Craft Advisory until 3 AM PDT Monday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Sunday for Pigeon Pt to Pt Pinos 0-10 nm-Pt Reyes to Pigeon Pt 0- 10 nm.
Small Craft Advisory until 9 AM PDT Monday for Pt Arena to Pt Reyes 10-60 NM.
