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PZZ531 San Francisco Bay South Of The Bay Bridge- 836 Am Pst Mon Dec 11 2023
Today..N winds around 5 knots...becoming W this afternoon.
Tonight..NW winds 5 to 10 knots. Patchy fog.
Tue..N winds 5 to 10 knots. Areas of fog.
Tue night..N winds 5 to 10 knots.
Wed..NE winds around 5 knots.
Wed night..NE winds 5 to 10 knots.
Thu..NE winds around 5 knots.
Fri..NE winds 5 to 10 knots.

PZZ500 836 Am Pst Mon Dec 11 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
high pressure off the pacific northwest coast and low pressure off the california coast will maintain northerly winds over the coastal waters. Gusty winds build over the southern waters early this week as an upper level low deepens into the great basin. The tail end of a weak system passing by will bring a slight chance of showers over the waters late Monday into Tuesday morning. Winds diminish into the later half of the week as high pressure builds once again. NEw storm system approaches next weekend.

FXUS66 KMTR 111809 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 1009 AM PST Mon Dec 11 2023

New AVIATION

SYNOPSIS
Issued at 1206 AM PST Mon Dec 11 2023

Look for quiet weather this week with mild days and cool night. A pattern change takes hold by early next week with a return to wet and unsettled conditions.

UPDATE
Issued at 925 AM PST Mon Dec 11 2023

Another chilly start to the day with lows bottoming out in the 30s across the interior and some coastal locations. A few isolated pockets in the upper 20s across S Salinas Valley as well.
Relatively speaking, quiet weather to start the work week. Latest surface analysis shows a weak dissipating cold front off the NorCal. As this dissipating front drifts southward a few clouds and coastal showers will be possible today. Did an update earlier this morning to remove shower chances over the waters this morning. KMUX remains in "clear air" mode this morning and isn't picking up any shower activity. No other updates needed.

SHORT TERM
(Today and tonight)
Issued at 1206 AM PST Mon Dec 11 2023

An upper level ridge initially across the region will flatten in response to a shortwave trough progressing from the Pacific Northwest into the Great Basin. This pattern change will bring a more onshore wind component for this afternoon and evening while increasing boundary layer moisture across coastal portions of the area. Expect a return of coastal stratus and patchy fog this evening into Tuesday morning along with warmer overnight coastal and bayside temperatures. Highs this afternoon with top out mostly in the 60s, with overnight lows mainly in the upper 30s and 40s. Some of the colder inland portions of the Central Coast may see readings briefly dip into the mid or lower 30s towards sunrise.

LONG TERM
(Tuesday through Sunday)
Issued at 1206 AM PST Mon Dec 11 2023

The aforementioned shortwave will obtain sufficiently short wavelength to close off over the Desert Southwest by late week as transient ridging builds over California. Meanwhile a closed upper low will approach the region from the eastern Pacific by late week.

An active and unsettled pattern still appears to evolve by early next week. Model solutions have been rather provocative with a robust basin-spanning Pacific jet and decent subtropical moisture tap in play. Rain chances should enter the picture by Saturday and persist into next week, with an Atmospheric River type setup potentially in play. Exact details such as timing, rain amounts, and intensity will be fine tuned in the days ahead. This will be an evolving forecast so be sure to keep up with changes.

AVIATION
(18Z TAFS)
Issued at 1009 AM PST Mon Dec 11 2023

VFR conditions will prevail throughout the day with just a few passing high clouds. The return of stratus is likely late this evening and into the overnight with MVFR (or lower) ceilings, possible fog in the North Bay. Conditions return to VFR by mid-to- late morning.

Vicinity of SFO...VFR likely to prevail trough late tonight with MVFR ceilings thereafter. Guidance is fairly confident for the return by around 09Z and lasting through midmorning. Ceilings then lift after ~17Z.

SFO Bridge Approach...Similar to SFO although the stratus may impact the approach 2-4 hours before the terminal.

Monterey Bay Terminals...VFR to prevail through evening with higher confidence in the return of MVFR/IFR ceilings as soon as 04Z.
Conditions improve shortly after the end of the TAF period.

MARINE
(Today through Saturday)
Issued at 907 AM PST Mon Dec 11 2023

High pressure off the Pacific Northwest coast and low pressure off the California coast will maintain northerly winds over the coastal waters. Gusty winds build over the southern waters early this week as an upper level low deepens into the Great Basin. The tail end of a weak system passing by will bring a slight chance of showers over the waters late Monday into Tuesday morning.
Winds diminish into the later half of the week as high pressure builds once again. New storm system approaches next weekend.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 AM PST Tuesday for Pt Pinos to Pt Piedras Blancas 0-10 nm.

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Coyote Hills Slough entrance
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Mon -- 05:34 AM PST     1.29 feet Low Tide
Mon -- 06:02 AM PST     Moonrise
Mon -- 07:13 AM PST     Sunrise
Mon -- 10:20 AM PST     7.46 feet High Tide
Mon -- 03:40 PM PST     Moonset
Mon -- 04:50 PM PST     Sunset
Mon -- 06:48 PM PST     -0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Coyote Hills Slough entrance, San Francisco Bay, California, Tide feet

Dumbarton Bridge
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Mon -- 01:04 AM PST     -0.00 knots Slack
Mon -- 02:49 AM PST     -0.52 knots Max Ebb
Mon -- 05:06 AM PST     0.00 knots Slack
Mon -- 06:02 AM PST     Moonrise
Mon -- 07:12 AM PST     Sunrise
Mon -- 08:34 AM PST     1.33 knots Max Flood
Mon -- 11:46 AM PST     -0.00 knots Slack
Mon -- 02:57 PM PST     -1.70 knots Max Ebb
Mon -- 03:40 PM PST     Moonset
Mon -- 04:50 PM PST     Sunset
Mon -- 06:31 PM PST     0.00 knots Slack
Mon -- 09:47 PM PST     1.75 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION

Dumbarton Bridge, San Francisco Bay, California Current, knots

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