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PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 831 Am Pst Fri Dec 8 2023
Today..N winds 15 to 25 knots. Gusts up to 25 knots this afternoon. Wind waves 3 to 4 ft...building to 4 to 6 ft this afternoon. W swell 7 to 9 ft at 13 seconds.
Tonight..N winds 10 to 15 knots. Wind waves 4 to 5 ft. W swell 5 to 7 ft at 12 seconds.
Sat..NE winds 10 to 15 knots. Wind waves 3 to 4 ft. NW swell 5 to 6 ft at 12 seconds.
Sat night..NE winds 10 to 15 knots. Wind waves 3 to 4 ft. NW swell 3 to 5 ft at 14 seconds.
Sun..N winds 10 to 15 knots. Wind waves 3 to 4 ft. W swell 3 to 5 ft at 15 seconds.
Sun night..N winds 5 to 10 knots. Wind waves 4 to 5 ft. W swell 5 to 6 ft at 13 seconds.
Mon..N winds 10 to 15 knots. Wind waves 4 to 5 ft. W swell 3 to 5 ft.
Tue..N winds 5 to 10 knots. Wind waves 2 to 3 ft. W swell around 3 ft.

PZZ500 831 Am Pst Fri Dec 8 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
moderate to fresh northerly breezes will prevail today behind yesterday's cold front. Elevated seas remain in place into tonight as a series of long period northwest swells propagate through the waters. Fresh to strong breezes are expected to return for the offshore waters by early to mid next week.

FXUS66 KMTR 081753 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 953 AM PST Fri Dec 8 2023

New AVIATION

SYNOPSIS
Issued at 1235 AM PST Fri Dec 8 2023

High pressure will bring quiet weather over the next several days.
Cold overnights and interior frost/freezing conditions are expected before a gradual warming trend occurs early next week.

UPDATE
Issued at 822 AM PST Fri Dec 8 2023

To finish off the work week the Bay Area begins with mostly sunny skies, but chilly to cold temperatures. Clear skies and light winds this morning led to some chilly/cold temperatures across the interior valleys. Shouldn't be surprising, but the coldest locations were across the interior N Bay and interior Monterey/San Benito. Several locations were at or below the freezing mark. The cold temperatures are highlighted by the Freeze Warning that is in effect through 9 AM.

While most areas are sunny, the long nights, ample low level moisture, and light winds led to patchy dense fog. Fog is most dense and more widespread in the Central Valley, but pockets of dense fog have impacted the North Bay and East Bay. Latest vis satellite do show thinning of the fog and expect this trend to continue through mid-morning.

No update needed...

SHORT TERM
(Today and tonight)
Issued at 1235 AM PST Fri Dec 8 2023

A surface cold front was pushing south of the area this morning as an expansive low-level ridge builds into the region from the eastern Pacific. The post-frontal regime brought a colder airmass and drying aloft, albeit with enough residual surface layer moisture remaining for pockets of fog -- some locally dense -- to develop. Outside of monitoring visibility this morning the primary concern is colder temperatures. Readings are already dipping into the 30s within the coldest interior valleys this morning and Freeze Warnings remain in effect for the North Bay and interior Monterey and San Benito Counties. High temperatures this afternoon should rebound into the upper 50s to near 60 before even colder conditions arrive tonight.
Given ideal conditions for radiational cooling the coldest portions of the area should reach into frost/freeze territory once again.
Thus the Freeze Watches for the North Bay Valleys and interior Monterey and San Benito Counties were converted to Freeze Warnings for tonight. Make sure to protect people, pets, plants and pipes from the cold.

LONG TERM
(Saturday through Thursday)
Issued at 1235 AM PST Fri Dec 8 2023

The primary concern through the weekend remains cold overnight temperatures. A Freeze Warning will continue for the North Bay valleys and inland Central Coast Saturday morning. Freeze Watches were also hoisted for these same areas for late Saturday night into Sunday morning.

Relatively quiet weather will prevail for the remainder of the week with gradually warming daytime temperatures. Overnight readings will remain cool however with the coldest interior locations dipping into the upper 30s and 40s. Daytime highs will be mostly in the 60s.

Looking ahead deterministic models and their ensembles suggest a more unsettled pattern may develop around December 16th-18th. But that's pretty far out for the moment so we'll need time for the details to be ironed out. That said, it looks like rain will re- enter the forecast picture around this time.

AVIATION
(18Z TAFS)
Issued at 944 AM PST Fri Dec 8 2023

VFR through the TAF period. Very localized dense FG near KLVK expected to clear before noon today, then VFR otherwise. Winds remain light to breezy and generally from the NW today, turning offshore but remaining light overnight into Saturday morning. High clouds moving in overnight. Low confidence in isolated areas of FG moving in from the central valley Saturday morning along the far eastern portions of the East Bay.

Vicinity of SFO...VFR through the period. Winds remain light to breezy NW, turning E/NE but remaining on the lighter side Saturday morning.

SFO Bridge Approach...Similar to SFO

Monterey Bay Terminals...VFR through the period. Winds light onshore this afternoon. Light offshore drainage flow Saturday morning.

MARINE
(Today through Wednesday)
Issued at 307 AM PST Fri Dec 8 2023

Moderate to fresh northerly breezes will prevail today behind a cold front. Elevated seas will remain in place into tonight as a series of long period northwest swells propagate through the waters. Fresh to strong breezes are expected to return for the offshore waters by early to mid next week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...Freeze Warning from midnight tonight to 10 AM PST Saturday for CAZ506-516-518.

Freeze Watch from late Saturday night through Sunday morning for CAZ506-516-518.

PZ...Small Craft Advisory until 3 AM PST Saturday for Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 9 PM PST this evening for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM.

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Upper Guadalupe Slough
Click for Map
Fri -- 02:44 AM PST     Moonrise
Fri -- 03:24 AM PST     2.15 feet Low Tide
Fri -- 07:09 AM PST     Sunrise
Fri -- 09:07 AM PST     9.44 feet High Tide
Fri -- 02:04 PM PST     Moonset
Fri -- 04:49 PM PST     0.86 feet Low Tide
Fri -- 04:49 PM PST     Sunset
Fri -- 10:19 PM PST     6.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Upper Guadalupe Slough, San Francisco Bay, California, Tide feet

Dumbarton Point 2.3 mi NE
Click for Map
Fri -- 01:10 AM PST     -0.67 knots Max Ebb
Fri -- 02:45 AM PST     Moonrise
Fri -- 03:28 AM PST     0.00 knots Slack
Fri -- 06:10 AM PST     1.01 knots Max Flood
Fri -- 07:10 AM PST     Sunrise
Fri -- 09:12 AM PST     -0.00 knots Slack
Fri -- 01:43 PM PST     -1.08 knots Max Ebb
Fri -- 02:04 PM PST     Moonset
Fri -- 04:34 PM PST     0.01 knots Slack
Fri -- 04:49 PM PST     Sunset
Fri -- 07:10 PM PST     1.04 knots Max Flood
Fri -- 10:16 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current, knots

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