489 FXUS66 KMTR 081744 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1044 AM PDT Sun Jun 8 2025 ...New AVIATION... .SYNOPSIS... Issued at 1251 AM PDT Sun Jun 8 2025 No significant weather issues with dry conditions and temperatures generally near seasonal averages through the extended period. A slight cooling trend arrives for the end of next week. && .UPDATE... Issued at 906 AM PDT Sun Jun 8 2025 We are watching the marine layer slowly erode this morning, with satellite imagery showing this and moisture surging in from the west. Adjusted the cloud cover/sky portion of the forecast to try and show the slower trend. Should it take a touch longer, the high temperature forecast might be at risk where clouds either linger or hold steady. && .SHORT TERM... (Today and tonight) Issued at 1251 AM PDT Sun Jun 8 2025 An upper level ridge continues to move into the Pacific Northwest and British Columbia, while an cutoff low to the west of California maintains the marine layer at around 1500 feet deep. Latest satellite imagery shows stratus clouds blanketing the coast and flowing into the inland valleys, with a cloudy morning expected for all but the highest elevations and the most interior valleys in the East Bay and Central Coast. Morning lows hover in the lower to middle 50s for the lower elevations, up to the lower 60s in the higher elevations. In terms of sensible weather, today will be remarkably similar to yesterday with clearing skies this afternoon away from the immediate coast, a robust onshore wind this afternoon and evening, and seasonably warm highs in the upper 70s to the middle 80s inland, up to the middle 90s in the warmest spots, and cool coastal highs in the upper 50s to the middle 60s. && .LONG TERM... (Monday through Saturday) Issued at 1251 AM PDT Sun Jun 8 2025 Over the next few days, the upper level ridge will erode while the cutoff low dissipates, leading to a slight compression in the marine layer, but otherwise leaving the weather pattern remarkably stable through the middle of the week. By Thursday, a trough forming in the eastern Pacific will move into the West Coast, leading to a slight cooling trend across the region towards the end of the 7-day outlook. Inland high temperatures will drop slightly below the seasonal averages, around the middle 70s to the lower 80s, with coastal temperatures remaining stable in the upper 50s to middle 60s. && .AVIATION... (18Z TAFS) Issued at 1034 AM PDT Sun Jun 8 2025 Mix of MVFR cigs along the coast and VFR inland through today. High confidence in clearing times at most terminals with the exception of coastal terminals such as MRY and HAF. While other terminals will remain stable SKC, HAF is likely to bounce in and out of SCT-BKN through midday before BKN/OVC prevailing again later this afternoon. Otherwise high confidence in stratus return tonight with another round of MVFR/IFR cigs. Vicinity of SFO...Pretty reliable clearing signal over the peninsula currently, so high confidence in VFR through today. Also high confidence in stratus return this evening with MVFR cigs. Not much variation in marine layer depth over the current TAF period. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...Relatively short VFR window midday today along coastal areas. Good onshore flow and deeper marine layer restore MVFR/IFR cigs with high confidence later this afternoon. && .MARINE... (Today through Friday) Issued at 438 AM PDT Sun Jun 8 2025 A fresh to strong westerly breeze will develop across the bays this afternoon and persist through the evening. A more widespread fresh NW breeze will arrive Monday afternoon across the coastal waters. A low amplitude, long period southwesterly swell arrives Monday, bringing enhanced currents and causing waves to break in deeper water. Strong NW winds and rough seas are expected to arrive by mid-week. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for SF Bay N of Bay Bridge. Small Craft Advisory from 3 PM to 9 PM PDT Monday for Pigeon Pt to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm-SF Bay N of Bay Bridge. Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Monday for Pt Pinos to Pt Piedras Blancas 0-10 nm. Small Craft Advisory from 9 PM this evening to 9 PM PDT Monday for Pt Arena to Pt Reyes 10-60 NM. && $$ SHORT TERM...DialH LONG TERM....DialH AVIATION...Behringer MARINE...Flynn Visit us at www.weather.gov/sanfrancisco Follow us on Facebook, X, and YouTube at: www.facebook.com/nwsbayarea x.com/nwsbayarea www.youtube.com/nwsbayarea