Issued at 640 AM PDT Tue Jun 2 2026
First and foremost, the Dense Fog Advisory has been cancelled. While there is patchy fog still being reported around the region dense fog is not. Lower end vsby this morning will range from 2 to 4 miles. Why not dense fog? Likely tied to full June Gloom mode. Early frames from the vis satellite imagery shows a classic marine layer/stratus push across the region and inland valleys. Profiles near Bodega Bay and ACARS soundings with vapor traces shows the depth around the 1300-1600 ft range. The deepening marine layer has a harder time supporting dense fog. Drizzle and/or mist on the other hand will still be possible this morning.
What about seeing the Sun today? Marine layer stratus will persist through mid to late morning before rolling back to the coast. Expect inland sunshine, but coastal areas will struggle to see the Sun. It goes without saying, but temperatures will be on the cooler side today given the clouds and persistent onshore flow.
No other updates needed at this time.
MM
, Issued at 1204 AM PDT Tue Jun 2 2026 (Today and tonight)
Expecting areas of dense fog overnight along the Monterey Bay and Big Sur coastline, similar to early Monday morning in the pre-dawn hours with a more robust marine layer getting some assistance pushing inland from a weak upper trough that will continue to shift south toward SoCal for the remainder of the overnight and today. Meanwhile, with weak upper level ridging just to our north, leaves the Bay Area and Central Coast under unorganized H30 jet flow early this morning that begins to increase and become more organized throughout the day. Temperatures today will be near or slightly cooler than Mondays highs. Higher elevations in the far North Bay tonight under the influence of the east shifting upper ridge will once again see warmer than normal temperatures from thermal belting, while similarly to the far south in higher elevations of the Santa Lucias in southern Monterey County the upper low helps promote a weak fetch of offshore flow and thermal belting, an interesting pattern with H85 temperatures roughly in the 75th percentile for this time of year. Otherwise overnight lows into Wednesday will be in the low to mid-50s for lower lying areas both near the coast and inland.
..issued at 1204 AM PDT Tue Jun 2 2026 (Wednesday through Monday)
The remainder of the work week will only have slight fluctuations in daily temperatures as the upper level low organizes in the Gulf of Alaska with its associated trough deepening southward toward out latitude, arriving in earnest later Friday, and lowering our temperatures 5-10 degrees below normal for the weekend into the beginning of next week. The troughing pattern appears to persist past the current extended forecast, however the forecast continues to remain dry, but pockets of coastal drizzle and fog may be a nuisance up and down our Pacific coastline each night and early morning.
(12z TAFS) Issued at 455 AM PDT Tue Jun 2 2026
Currently a mixed bag of LIFR-VFR at the terminals with stratus rapidly expanding. APC, LVK, and SFO remain VFR; however, stratus is only 5-10 miles from these terminals. Moderate to high confidence in APC and SFO becoming IFR with LVK likely to be saved by terrain. High confidence in VFR by this afternoon. The increase in wind over the marine environment will likely prove to be too much for the marine layer by mixing things up. As a result, only moderate confidence on sub-VFR ceilings returning tonight with stratus expected to be more localized in nature and favor coastal/bayshore locations.
Vicinity of SFO, Currently VFR with northwesterly flow. Stratus spreading north along the San Francisco Peninsula bayshore will likely result in the terminal going IFR. High confidence in VFR by 17Z. Onshore winds will increase this afternoon with gusts up to 25 knots possible. Low to moderate confidence on a ceiling returning tonight; however, FEW to SCT low clouds can be expected by this evening.
SFO Bridge Approach, Stratus spreading south from the East Bay Hills and stratus spreading north from Moffett Field will impact the San Mateo Bridge approach. Conditions will slowly begin to improve as early as 15Z with high confidence in VFR by the afternoon.
Monterey Bay Terminals, Currently LIFR and calm at both terminals. Fog has been observed across the Central Coast intermittently overnight; therefore, fog remains in a TEMPO line from 12Z-16Z. A reasonable best case scenario based on the latest trends is that ceilings and visibilities rise through the morning. Brief clearing is expected this afternoon; with stratus sticking close to the coast, an early return is expected tonight.
(today through Sunday) Issued at 455 AM PDT Tue Jun 2 2026
Moderate to fresh northwesterly breezes will increase this afternoon, bringing hazardous conditions to the northern outer waters. Northwesterly breezes will increase tomorrow to become strong to near-gale, bringing widespread hazardous conditions through Saturday. Gale force gusts are to be expected, especially across the outer waters and along the coastal jet regions. Moderate seas will prevail through Wednesday before building to become rough Thursday into the weekend.
Ca, None. PZ, Small Craft Advisory from 3 PM to 9 PM PDT Wednesday for SF Bay N of Bay Bridge.
Small Craft Advisory from 3 PM Wednesday to 3 AM PDT Thursday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM.
Small Craft Advisory from 9 PM this evening to 3 PM PDT Wednesday for Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.
Gale Watch from Wednesday afternoon through late Wednesday night for Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.
Small Craft Advisory from 3 PM this afternoon to 3 PM PDT Wednesday for Pt Arena to Pt Reyes 10-60 NM.
