NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION. Privacy and Cookie policy

PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 301 Am Pst Sat Dec 9 2023
Today..N winds 15 to 20 knots.
Tonight..NE winds 5 to 10 knots.
Sun..NE winds 5 to 10 knots.
Sun night..NW winds 5 to 10 knots.
Mon..NW winds 5 to 10 knots.
Mon night..W winds 5 to 10 knots.
Tue..N winds around 5 knots.
Wed..NE winds 5 to 10 knots.

PZZ500 301 Am Pst Sat Dec 9 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
high pressure will bring quiet and dry conditions to the region. Light to moderate northerly breezes persist through the weekend with diminishing seas. Fresh to strong breezes return to the offshore waters by early to mid next week.

FXUS66 KMTR 091150 AFDMTR

Area Forecast Discussion National Weather Service San Francisco CA 350 AM PST Sat Dec 9 2023

New AVIATION

SYNOPSIS
Issued at 1223 AM PST Sat Dec 9 2023

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

SHORT TERM
(Today and tonight)
Issued at 1223 AM PST Sat Dec 9 2023

The storm track will be diverted well to our north as high pressure aloft noses into our area from the southwest. This will support surface ridging as it expands to encompass the Great Basin and provide a light offshore wind regime to the area. After a cold and frosty (for some) start this morning look for temperatures to reach the lower to mid 60s across the region today with plenty of sunshine. Tonight will be cool, but not quite as cold as the previous nights have been. That said, the coldest portions of the inland Central Coast and North Bay valleys will still see temperatures at or below 35 degrees or so. Therefore the Freeze Watch was converted to a Frost Advisory for these areas from late tonight into Sunday morning. Remember to protect people, pets, plants and pipes from the cold.

LONG TERM
(Sunday through Friday)
Issued at 1223 AM PST Sat Dec 9 2023

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 developing around December 16th-18th. Still some fine tuning of the details but it does appear that rain will re- enter the forecast picture around this time.

AVIATION
(12Z TAFS)
Issued at 329 AM PST Sat Dec 9 2023

High pressure dominates the pattern. The terminals will remain mostly VFR with few to scattered high clouds and light to gentle winds through the day. The only exception is STS, where some morning mist/fog will reduce the visibility to MVFR/IFR. It's also worth noting that the temperature is approaching freezing and some aircraft icing is expected before the mist/fog clears after sunrise. There is also a low to moderate chance for dense fog and LIFR conditions to develop at STS later this morning.

Vicinity of SFO...VFR through the TAF period. Light winds may shift erratically with no discernible steering flow through mid day. A gentle NW sea breeze will develop in the afternoon before winds return to light and variable Sat night.

SFO Bridge Approach... Similar to SFO.

Monterey Bay Terminals... VFR through the TAF period. Light drainage flow this morning before onshore flow resumes in the afternoon.

MARINE
(Tonight through next Wednesday)
Issued at 301 AM PST Sat Dec 9 2023

High pressure will bring quiet and dry conditions to the region.
Light to moderate northerly breezes persist through the weekend with diminishing seas. Fresh to strong breezes return to the offshore waters by early to mid next week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...Freeze Warning until 10 AM PST this morning for CAZ506-516-518.

Frost Advisory from midnight tonight to 10 AM PST Sunday for CAZ506-516-518.

PZ...None.

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Alcatraz Island
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Sat -- 02:10 AM PST     2.27 feet Low Tide
Sat -- 03:49 AM PST     Moonrise
Sat -- 07:13 AM PST     Sunrise
Sat -- 08:37 AM PST     5.93 feet High Tide
Sat -- 02:31 PM PST     Moonset
Sat -- 03:31 PM PST     0.16 feet Low Tide
Sat -- 04:50 PM PST     Sunset
Sat -- 10:19 PM PST     4.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Alcatraz Island, San Francisco Bay, California, Tide feet

Fleming Point 1.7 mi SW
Click for Map
Sat -- 02:28 AM PST     0.00 knots Slack
Sat -- 03:49 AM PST     Moonrise
Sat -- 05:59 AM PST     0.50 knots Max Flood
Sat -- 07:13 AM PST     Sunrise
Sat -- 09:12 AM PST     -0.00 knots Slack
Sat -- 12:02 PM PST     -0.41 knots Max Ebb
Sat -- 02:31 PM PST     Moonset
Sat -- 03:34 PM PST     0.00 knots Slack
Sat -- 04:50 PM PST     Sunset
Sat -- 07:06 PM PST     0.60 knots Max Flood
Sat -- 10:37 PM PST     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Fleming Point 1.7 mi SW, San Francisco Bay, California Current, knots

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