Marine Weather and Tide Forecast for Piedmont, CA
December 10, 2023 11:18 AM PST (19:18 UTC)
Sunrise 7:12AM Sunset 4:51PM Moonrise 4:55AM Moonset 3:02PM
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 803 Am Pst Sun Dec 10 2023
Today..NE winds 5 to 10 knots.
Tonight..N winds around 5 knots.
Mon..NW winds 5 to 10 knots.
Mon night..W winds 5 to 10 knots.
Tue..N winds 5 to 10 knots.
Tue night..NW winds 5 to 10 knots.
Wed..NE winds 5 to 10 knots.
Thu..NE winds 5 to 10 knots.
Today..NE winds 5 to 10 knots.
Tonight..N winds around 5 knots.
Mon..NW winds 5 to 10 knots.
Mon night..W winds 5 to 10 knots.
Tue..N winds 5 to 10 knots.
Tue night..NW winds 5 to 10 knots.
Wed..NE winds 5 to 10 knots.
Thu..NE winds 5 to 10 knots.
PZZ500 803 Am Pst Sun Dec 10 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
high pressure locateed to our south will bring quiet weather to the local waters today. Slight chance for a shower or two tonight into Tuesday in the outer waters as a weak weather disturbance passes by. Gentle to moderate northerly breezes are anticipated through the weekend, with the exception of fresh to strong breezes which develop in the southern waters later today into tonight.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
high pressure locateed to our south will bring quiet weather to the local waters today. Slight chance for a shower or two tonight into Tuesday in the outer waters as a weak weather disturbance passes by. Gentle to moderate northerly breezes are anticipated through the weekend, with the exception of fresh to strong breezes which develop in the southern waters later today into tonight.
Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 101723 AFDMTR
Area Forecast Discussion National Weather Service San Francisco CA 923 AM PST Sun Dec 10 2023
New AVIATION
SYNOPSIS
Issued at 1140 PM PST Sat Dec 9 2023
Quiet weather this week with mild days and cool nights. A pattern change takes hold for next weekend into early next week with a likely return to wet and unsettled conditions.
UPDATE
Issued at 852 AM PST Sun Dec 10 2023
Widespread mid-high level clouds cover the Bay Area this morning making for a picturesque sunrise. The high clouds area associated with the leading edge of an upper level shortwave trough approaching from the NW. While it may not have been as cold as yesterday morning (most areas) it was still chilly with lots of 30s showing up across the interior and some coastal areas. Even saw a few isolated upper 20s in the coldest interior locations of the N Bay and S Salinas Valley. Frost Advisory still remains in effect this morning for the N Bay and interior Monterey/San Benito counties.
No update need this morning.
SHORT TERM
(Sunday and Sunday night)
Issued at 1140 PM PST Sat Dec 9 2023
High pressure centered to our south will bring dry conditions, light offshore flow, and pleasant daytime temperatures. After a chilly start this morning look for afternoon highs to reach the lower to mid 60s, with some lower 70s within the warmest inland portions of the Central Coast. Some high level cloudiness will prevail as a weak upper trough approaches from the north late in the forecast period.
Another cool night is anticipated with lows generally in the upper 30s/lower 40s inland with 40s along the coast and around the bays. A few of the typically colder inland spots could dip into the mid 30s for a brief time towards Monday morning.
LONG TERM
(Monday through next Friday)
Issued at 1140 PM PST Sat Dec 9 2023
The upper ridge flattens in response to the aforementioned shortwave arriving from the north on Monday. Dry and fairly quiet conditions prevail through late week with low pressure dropping through the Great Basin resulting in periods of generally light offshore flow.
Temperatures will remain seasonal with mild days and chilly overnights.
Deterministic models and their ensembles still advertise an active and unsettled pattern evolving for next weekend into early next week. Some of the model solutions have been rather provocative with a robust basin-spanning Pacific jet and decent subtropical moisture tap in play. That said there's still plenty of details to resolve this far out. It does appear that rain chances will enter the picture by this weekend and/or early next week, but specifics on timing and amounts are elusive at this juncture. Stay tuned for updates.
AVIATION
(18Z TAFS)
Issued at 923 AM PST Sun Dec 10 2023
Widespread VFR with high clouds periodically moving over the terminals. Models show agreement of KSTS experiencing fog and low visibility near the early morning tomorrow. Winds are relatively light with mostly northerly to northeasterly direction and will continue as such through most of the TAF period. Winds may shift to a N/NW direction tomorrow afternoon but moderate confidence as some models suggest a continued offshore flow.
Vicinity of SFO...Expect to VFR through the TAF period as high clouds move over the terminal. Winds are currently light and variable winds and will transition to gentle NW winds in the afternoon.
SFO Bridge Approach... Similar to SFO.
Monterey Bay Terminals...VFR through the TAF period with light to moderate SE winds. KSNS will continue to experience drainage through the morning until the afternoon where winds will shift to NW.
MARINE
(Today through Friday)
Issued at 832 AM PST Sun Dec 10 2023
High pressure located to our south will bring quiet weather to the local waters today. Slight chance for a shower or two tonight into Tuesday in the outer waters as a weak weather disturbance passes by. Gentle to moderate northerly breezes are anticipated through the weekend, with the exception of fresh to strong breezes which develop in the southern waters later today into tonight.
MTR WATCHES/WARNINGS/ADVISORIES
CA...Frost Advisory until 10 AM PST this morning for CAZ506-516-518.
PZ...Small Craft Advisory from 9 PM this evening to 3 AM PST Tuesday for Pt Pinos to Pt Piedras Blancas 0-10 nm.
Area Forecast Discussion National Weather Service San Francisco CA 923 AM PST Sun Dec 10 2023
New AVIATION
SYNOPSIS
Issued at 1140 PM PST Sat Dec 9 2023
Quiet weather this week with mild days and cool nights. A pattern change takes hold for next weekend into early next week with a likely return to wet and unsettled conditions.
UPDATE
Issued at 852 AM PST Sun Dec 10 2023
Widespread mid-high level clouds cover the Bay Area this morning making for a picturesque sunrise. The high clouds area associated with the leading edge of an upper level shortwave trough approaching from the NW. While it may not have been as cold as yesterday morning (most areas) it was still chilly with lots of 30s showing up across the interior and some coastal areas. Even saw a few isolated upper 20s in the coldest interior locations of the N Bay and S Salinas Valley. Frost Advisory still remains in effect this morning for the N Bay and interior Monterey/San Benito counties.
No update need this morning.
SHORT TERM
(Sunday and Sunday night)
Issued at 1140 PM PST Sat Dec 9 2023
High pressure centered to our south will bring dry conditions, light offshore flow, and pleasant daytime temperatures. After a chilly start this morning look for afternoon highs to reach the lower to mid 60s, with some lower 70s within the warmest inland portions of the Central Coast. Some high level cloudiness will prevail as a weak upper trough approaches from the north late in the forecast period.
Another cool night is anticipated with lows generally in the upper 30s/lower 40s inland with 40s along the coast and around the bays. A few of the typically colder inland spots could dip into the mid 30s for a brief time towards Monday morning.
LONG TERM
(Monday through next Friday)
Issued at 1140 PM PST Sat Dec 9 2023
The upper ridge flattens in response to the aforementioned shortwave arriving from the north on Monday. Dry and fairly quiet conditions prevail through late week with low pressure dropping through the Great Basin resulting in periods of generally light offshore flow.
Temperatures will remain seasonal with mild days and chilly overnights.
Deterministic models and their ensembles still advertise an active and unsettled pattern evolving for next weekend into early next week. Some of the model solutions have been rather provocative with a robust basin-spanning Pacific jet and decent subtropical moisture tap in play. That said there's still plenty of details to resolve this far out. It does appear that rain chances will enter the picture by this weekend and/or early next week, but specifics on timing and amounts are elusive at this juncture. Stay tuned for updates.
AVIATION
(18Z TAFS)
Issued at 923 AM PST Sun Dec 10 2023
Widespread VFR with high clouds periodically moving over the terminals. Models show agreement of KSTS experiencing fog and low visibility near the early morning tomorrow. Winds are relatively light with mostly northerly to northeasterly direction and will continue as such through most of the TAF period. Winds may shift to a N/NW direction tomorrow afternoon but moderate confidence as some models suggest a continued offshore flow.
Vicinity of SFO...Expect to VFR through the TAF period as high clouds move over the terminal. Winds are currently light and variable winds and will transition to gentle NW winds in the afternoon.
SFO Bridge Approach... Similar to SFO.
Monterey Bay Terminals...VFR through the TAF period with light to moderate SE winds. KSNS will continue to experience drainage through the morning until the afternoon where winds will shift to NW.
MARINE
(Today through Friday)
Issued at 832 AM PST Sun Dec 10 2023
High pressure located to our south will bring quiet weather to the local waters today. Slight chance for a shower or two tonight into Tuesday in the outer waters as a weak weather disturbance passes by. Gentle to moderate northerly breezes are anticipated through the weekend, with the exception of fresh to strong breezes which develop in the southern waters later today into tonight.
MTR WATCHES/WARNINGS/ADVISORIES
CA...Frost Advisory until 10 AM PST this morning for CAZ506-516-518.
PZ...Small Craft Advisory from 9 PM this evening to 3 AM PST Tuesday for Pt Pinos to Pt Piedras Blancas 0-10 nm.
toggle option: (graph/table)
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KOAK METROPOLITAN OAKLAND INTL,CA | 9 sm | 25 min | var 03 | 10 sm | Mostly Cloudy | 52°F | 45°F | 76% | 30.32 | |
| KCCR BUCHANAN FIELD,CA | 13 sm | 25 min | N 07 | 10 sm | Clear | 52°F | 41°F | 67% | 30.34 | |
| KHWD HAYWARD EXECUTIVE,CA | 14 sm | 24 min | calm | 10 sm | Clear | 52°F | 41°F | 67% | 30.30 | |
| KSFO SAN FRANCISCO INTL,CA | 18 sm | 22 min | E 04 | 10 sm | Mostly Cloudy | 54°F | 41°F | 62% | 30.31 | |
| KLVK LIVERMORE MUNI,CA | 24 sm | 25 min | ENE 08 | 10 sm | Clear | 55°F | 39°F | 54% | 30.30 | |
| KSQL SAN CARLOS,CA | 24 sm | 28 min | NE 04 | 10 sm | Clear | 52°F | 39°F | 62% | 30.32 |
Wind History from OAK
(wind in knots)Tide / Current data from XTide NOT FOR NAVIGATION
Berkeley, San Francisco Bay, California, Tide feet
Tide / Current for Oakland Harbor WebStreeter Street, San Francisco Bay, California Current
EDIT (on/off) HelpOakland Harbor WebStreeter Street
Click for Map
Sun -- 12:14 AM PST -0.61 knots Max Ebb
Sun -- 03:21 AM PST 0.00 knots Slack
Sun -- 04:54 AM PST Moonrise
Sun -- 06:31 AM PST 0.75 knots Max Flood
Sun -- 07:13 AM PST Sunrise
Sun -- 09:16 AM PST -0.00 knots Slack
Sun -- 12:31 PM PST -1.35 knots Max Ebb
Sun -- 03:02 PM PST Moonset
Sun -- 04:28 PM PST 0.00 knots Slack
Sun -- 04:50 PM PST Sunset
Sun -- 07:43 PM PST 0.99 knots Max Flood
Sun -- 11:01 PM PST -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 12:14 AM PST -0.61 knots Max Ebb
Sun -- 03:21 AM PST 0.00 knots Slack
Sun -- 04:54 AM PST Moonrise
Sun -- 06:31 AM PST 0.75 knots Max Flood
Sun -- 07:13 AM PST Sunrise
Sun -- 09:16 AM PST -0.00 knots Slack
Sun -- 12:31 PM PST -1.35 knots Max Ebb
Sun -- 03:02 PM PST Moonset
Sun -- 04:28 PM PST 0.00 knots Slack
Sun -- 04:50 PM PST Sunset
Sun -- 07:43 PM PST 0.99 knots Max Flood
Sun -- 11:01 PM PST -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Oakland Harbor WebStreeter Street, San Francisco Bay, California Current, knots
| 12 am |
| -0.6 |
| 1 am |
| -0.6 |
| 2 am |
| -0.4 |
| 3 am |
| -0.1 |
| 4 am |
| 0.2 |
| 5 am |
| 0.5 |
| 6 am |
| 0.7 |
| 7 am |
| 0.7 |
| 8 am |
| 0.5 |
| 9 am |
| 0.1 |
| 10 am |
| -0.4 |
| 11 am |
| -1 |
| 12 pm |
| -1.3 |
| 1 pm |
| -1.3 |
| 2 pm |
| -1.1 |
| 3 pm |
| -0.7 |
| 4 pm |
| -0.3 |
| 5 pm |
| 0.3 |
| 6 pm |
| 0.7 |
| 7 pm |
| 0.9 |
| 8 pm |
| 1 |
| 9 pm |
| 0.8 |
| 10 pm |
| 0.5 |
| 11 pm |
| 0 |
Sacramento, CA,
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