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

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