Current Predictions at Golden Gate Bridge, 0.8 mile east of

Starting on 2024-09-10 PDT

Current forecasts are generated by NOAA. These do not include effects of rainfall. Following heavy rains, you may expect stronger ebbs and delayed and reduced floods, particularly where the data provided are for greater depths.

• Currents from NOAA
• Sunrise/set by SunriseSunset.io

FXUS66 KMTR 110007
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
507 PM PDT Tue Sep 10 2024

...New AVIATION, MARINE...

.SYNOPSIS...
Issued at 246 AM PDT Tue Sep 10 2024

A gradual cool down today as temperatures cool aloft, before a deep 
upper level trough brings breezy winds by Wednesday and Thursday. 
Temperatures will continue to run near to below seasonal averages 
through the upcoming weekend.

&&

.SHORT TERM...
(This evening through Wednesday)
Issued at 109 PM PDT Tue Sep 10 2024

The ridge that brought above normal temperatures and near critical 
fire weather conditions will continue to flatten, allowing for 
temperatures to return to normal to 5-10 degrees below normal. 
Tomorrow will be much of the same temperature and cloud cover wise 
with a deep marine layer of 3,000 feet easily capable of filling in 
all but the highest of elevations overnight and dissipating by the 
afternoon.

Now for the main hazard: wind. Tomorrow will be very windy as a low 
pressure system from the Gulf of Alaska drops into the Pacific 
Northwest, tightening the pressure gradient between subtropical high 
pressure over the Eastern Pacific Ocean. While below Wind Advisory 
criteria, widespread wind gusts of 30 mph are expected with gusts of 
50+ mph expected through gaps, passes, and other favorable spots, 
namely the Altamont Pass and Salinas Valley. 

Actions to take:

-Store or secure loose items such as patio furniture, sports 
equipment, trampolines, and trash cans.

-Use caution when driving, especially high-profile vehicles.

-Have a plan in case of a power outage.

While the overall fire threat is on a downward trend due to lower 
temperatures and higher relative humidities, fuels still remain 
critically dry with large fires possible. Therefore, any fire 
that starts will have no problem spreading and the strong winds 
will only make matters worse. As always, it is imperative to 
remain vigilant when it comes to exercising fire safety.

Actions to take:

-Properly discard cigarettes.

-Keep vehicles off of dry grass.

-Avoid activities with open flames or sparks.

-Avoid power equipment that creates sparks.

-Obey burn bans.

&&

.LONG TERM...
(Wednesday night through next Monday)
Issued at 109 PM PDT Tue Sep 10 2024

Winds will decrease Wednesday evening as the trough axis moves
inland and high pressure begins to rebuild. As the trough moves
continues East, there may be a brief period of offshore N or NE
winds in the North Bay Friday morning. While this possibility
remains, the latest model trends are backing off and beginning to
favor a more shallow feature that won't disrupt the standard NW
flow.

A small amplitude ridge will move trough on Friday, before a
second trough slowly approaches from stage left. The exact impacts
from this second trough are still uncertain with quite a bit of 
model divergence, particularly in the timing. There is a decent 
chance for a bit of rain, but that could be anytime from late 
Monday-Thursday and the details are too fuzzy to lay out in any
great detail at this time. What we do know is that this troughing
pattern will keep temperatures mild through the next 7-10 days at
least.

&&

.AVIATION...
(00Z TAFS)
Issued at 507 PM PDT Tue Sep 10 2024

Late afternoon visible satellite imagery and surface observations 
show coastal stratus /MVFR/ beginning to move inland on onshore 
winds. The SFO-SAC pressure gradient predominates at 3.9 mb and 
is forecast to strengthen this time Wednesday afternoon to near 5 
mb. Otherwise stratus is forecast to lift and mix out Wednesday 
morning with lower level cool air advection on increasingly gusty 
northwest winds.

Vicinity of SFO...Satellite imagery and 5 minute observations 
show stratus /MVFR/ arriving at the terminal, brought in by a 
gusty west wind. MVFR tonight to 15z Wednesday morning then VFR 
for the remainder of the daytime. West wind gusts near 30 knots 
until 04z this evening, decreasing to 15 knots tonight and 
Wednesday, increasing to 25 to 35 knots beginning 21z Wednesday 
and lasting through the evening.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Stratus clouds are rapidly spreading 
over the Monterey Peninsula, further areal coverage of stratus 
/MVFR/ is forecast through the evening. MVFR tonight and Wednesday
morning then VFR late morning and afternoon Wednesday. West to 
northwest winds 10 to 20 knots early to mid evening, decreasing to
around 5 knots tonight then increasing to 10 to 20 knots Wednesday
late morning and afternoon.



&&

.MARINE...
(Tonight through next Sunday)
Issued at 440 PM PDT Tue Sep 10 2024

Breezy winds are arriving and will spread across the waters
through the night. Expect widespread moderate and gusty north to
northwest winds and rough waves across the coastal waters for
Wednesday. A gale watch has been issued for possible gale force
gusts across the Monterey Bay and inner coastal waters extending
from Pigeon Point to Point Pinos Wednesday morning into Wednesday
afternoon. Unsettled conditions are expected to continue through
the end of the week, but winds reduce in the late weekend.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 3 PM Wednesday to 3 AM PDT Thursday 
     for SF Bay N of Bay Bridge.

     Small Craft Advisory from 9 AM to 3 PM PDT Wednesday for Mry Bay-
     Pigeon Pt to Pt Pinos 0-10 nm.

     Gale Watch from Wednesday afternoon through Wednesday evening 
     for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm.

     Small Craft Advisory from 9 PM this evening to 3 AM PDT Thursday 
     for Pt Arena to Pt Reyes 0-10 nm.

     Small Craft Advisory from 9 AM to 9 PM PDT Wednesday for Pt 
     Reyes to Pigeon Pt 0-10 nm.

     Small Craft Advisory from 9 AM Wednesday to 3 AM PDT Thursday 
     for Pt Pinos to Pt Piedras Blancas 0-10 nm.

     Small Craft Advisory until 3 PM PDT Wednesday for Pt Arena to Pt 
     Reyes 10-60 NM.

     Small Craft Advisory from 3 AM to 9 AM PDT Thursday for Pt Arena 
     to Pt Reyes 10-60 NM.

     Small Craft Advisory from 9 PM this evening to 9 AM PDT Thursday 
     for Pigeon Pt to Pt Pinos 10-60 NM.

&&

$$

SHORT TERM...Sarment
LONG TERM....Flynn
AVIATION...Canepa
MARINE...Murdock

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https://api.tidesandcurrents.noaa.gov/api/prod/datagetter?begin_date=20240910&end_date=20241022&station=PCT0281&product=currents_predictions&time_zone=lst_ldt&interval=MAX_SLACK&units=english&application=DataAPI_Sample&format=xml