Wednesday, December11, 2019
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Marine Weather and Tides
South San Francisco, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:13AMSunset 4:52PM Wednesday December 11, 2019 3:04 AM PST (11:04 UTC) Moonrise 4:45PMMoonset 6:36AM Illumination 100% Phase: Full Moon; Moon at 14 days in cycle
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.
Marine Forecasts
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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 846 Pm Pst Tue Dec 10 2019
Tonight..SE winds up to 10 kt. Rain this evening, then a chance of showers after midnight.
Wed..SE winds up to 10 kt. A slight chance of showers.
Wed night..S winds up to 10 kt. A slight chance of rain.
Thu..S winds 5 to 10 kt. A slight chance of rain.
Thu night..SW winds up to 10 kt. A slight chance of rain.
Fri..N winds around 5 kt.
Fri night..W winds around 5 kt.
Sat..W winds up to 10 kt. A chance of rain.
Sun..N winds up to 10 kt.
PZZ500 846 Pm Pst Tue Dec 10 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A weak frontal system will bring light to moderate rain to the northern waters tonight. Light to moderate southerly winds will then continue through much of the week as a series of frontal systems pass north of the area. Winds shifting to the northwest towards the weekend. A moderate northwest swell will persist before a longer period northwest swell arrives on Thursday. Wave heights will gradually build heading into the coming weekend creating hazardous seas conditions, particularly for smaller vessels.


7 Day Forecast for Marine Location Near South San Francisco, CA
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location: 37.65, -122.36     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 111054 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 254 AM PST Wed Dec 11 2019

SYNOPSIS. Periods of light rain will be possible over mainly the northern portion of the region through Saturday with mild temperatures region-wide. Conditions will dry out and turn colder Sunday into Monday. Unsettled conditions will potentially return by mid/late next week.

DISCUSSION. as of 02:53 AM PST Wednesday . Light rain and/or sprinkles continue over portions of the region this morning as an upper level trough exits to the east. Rainfall amounts have generally only been a few hundredths of an inch during the past 3 hours or so with the most widespread rainfall occuring over the North Bay. As a most zonal flow is forecast to persist through late week, periods of light rain will be possible over the northern half of the region while lesser chances are expected south of the Golden Gate. Mostly cloudy conditions will also continue through late week resulting in mild overnight temperatures in the upper 40s to lower 50s with temperatures generally only warming into the lower 60s each afternoon. Overall, rainfall through late week will be minimal with no major impacts likely.

A short-wave trough is then forecast to drop into northern California late Friday into Saturday. While precipitation with this system will also be minimal given the lack of stronger mid/upper level support, rain chances will shift southward into the Central Coast along a weak frontal boundary. Conditions will then dry out late Saturday into Sunday when the zonal flow and deeper moisture advection gets shunted to the south. Temperatures will also turn cooler, only warming into the 50s for most urban areas Saturday and into Monday. Overnight conditions will also turn cooler given clearing sky conditions and colder air mass aloft, generally dropping into the 30s and 40s for most.

While forecast confidence remains low at this time, the ensembles do indicate the potential for another system to bring rain to the region during the middle part of next week. Overall, widespread heavy rainfall does not appear likely at this time, yet unsettled weather conditions will be possible during the extended forecast period.

AVIATION. as of 10:11 PM PST Tuesday . Low level moisture has moved into the area tonight along with some light rain. Models keep abundant low-level moisture through Wednesday. MVFR cigs will be predominant through the night and is expected through most of the day Wednesday. Winds will be light and generally out of the southeast. Radar indicates the rain band is moving out of the area with a few showers behind it. Precip tapering off Wednesday morning.

Vicinity of KSFO . Cigs lowering into MVFR with bases 2000-3000 ft. Light east to southeast winds under 10 kt.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Low clouds have moved into MRY and SNS but approaching rain band will mix it out somewhat which will raise the cigs into MVFR category. MVFR cigs expected with possible scattering out in the afternoon. Generally southeast winds under 10 kt.

MARINE. as of 02:53 AM PST Wednesday . Weak high pressure off the California coast extends across California into the Great Basin. Winds will be light southeast through Thursday night before switching to northwest. Large northwest swells with long periods will build on Thursday and continue through Saturday.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 0-10 nm until 3 AM SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 AM



PUBLIC FORECAST: RGass AVIATION: W Pi MARINE: W Pi

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 9 mi47 min 55°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 10 mi47 min SE 9.9 G 11 54°F 1021.9 hPa
PXSC1 11 mi47 min 55°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 11 mi47 min SSE 6 G 8 54°F 1023.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 11 mi53 min SSE 8 G 8.9
OBXC1 11 mi47 min 54°F 54°F
LNDC1 11 mi47 min SSE 6 G 7 55°F 1023 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi53 min ESE 1.9 G 2.9 54°F 1023.2 hPa
RTYC1 - 9414523 - Redwood City, CA 13 mi47 min S 1.9 G 4.1 54°F 57°F1023.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 17 mi30 min SSW 1.9 53°F 1023 hPa
46237 - San Francisco Bar, CA (142) 17 mi65 min 55°F4 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 18 mi47 min SW 2.9 G 4.1 55°F 1023.4 hPa
RCMC1 - 9414863 - Richmond, CA 19 mi47 min 55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi25 min SE 16 G 18 53°F 56°F1023.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi53 min NNW 1.9 G 1.9 51°F 54°F1023.3 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 29 mi47 min ESE 6 G 7 52°F 1023 hPa
UPBC1 30 mi47 min E 2.9 G 4.1
PCOC1 - 9415144 - Port Chicago, CA 33 mi47 min 53°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 34 mi25 min SE 16 G 19 54°F 57°F1023.1 hPa52°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi53 min ESE 8 G 9.9 51°F 1023.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 41 mi53 min 54°F1022.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 42 mi80 min E 1.9 51°F 1024 hPa

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA2 mi69 minSSE 43.00 miFog/Mist53°F52°F96%1023.1 hPa
Oakland, Metro Oakland International Airport, CA8 mi72 minESE 67.00 miOvercast55°F53°F93%1023.2 hPa
San Carlos Airport, CA10 mi70 minSSW 45.00 miFog/Mist54°F53°F100%1023.7 hPa
Half Moon Bay Airport, CA12 mi70 minSSE 69.00 miOvercast54°F50°F88%1023.4 hPa
Hayward, Hayward Air Terminal, CA13 mi71 minE 310.00 miMostly Cloudy53°F51°F93%1023.9 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)
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Last 24hrNW4N10N8CalmN5NE6CalmCalmNE5NE6NE4N4NE5CalmW13W83CalmE4NE4E6E5S4Calm
1 day agoCalmCalmCalmW5SE4SE3SE4E4E6E7E5E3N4W9NW5W5NW6NW5CalmCalmE6S4CalmCalm
2 days agoS3S3W3W5W4W5NW5SW5NW63N4W8W9W10W13W14W11W9W4CalmCalmNW3CalmSW3

Tide / Current Tables for Oyster Point Marina, San Francisco Bay, California
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Oyster Point Marina
Click for Map
Wed -- 12:07 AM PST     5.76 feet High Tide
Wed -- 05:03 AM PST     2.68 feet Low Tide
Wed -- 06:36 AM PST     Moonset
Wed -- 07:14 AM PST     Sunrise
Wed -- 10:52 AM PST     7.61 feet High Tide
Wed -- 04:45 PM PST     Moonrise
Wed -- 04:51 PM PST     Sunset
Wed -- 05:59 PM PST     -0.81 feet Low Tide
Wed -- 09:14 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.85.54.73.832.733.85.16.47.37.67.15.94.12.20.6-0.5-0.8-0.40.623.44.7

Tide / Current Tables for Oyster Point 2.8 mi E, South San Francisco Bay, California Current
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Oyster Point 2.8 mi E
Click for Map
Wed -- 12:26 AM PST     -0.01 knots Slack
Wed -- 03:04 AM PST     -0.91 knots Max Ebb
Wed -- 05:36 AM PST     0.00 knots Slack
Wed -- 06:35 AM PST     Moonset
Wed -- 07:14 AM PST     Sunrise
Wed -- 08:36 AM PST     0.79 knots Max Flood
Wed -- 11:26 AM PST     -0.00 knots Slack
Wed -- 03:16 PM PST     -1.95 knots Max Ebb
Wed -- 04:45 PM PST     Moonrise
Wed -- 04:50 PM PST     Sunset
Wed -- 06:36 PM PST     0.00 knots Slack
Wed -- 09:14 PM PST     Full Moon
Wed -- 09:43 PM PST     1.09 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0.3-0.7-0.9-0.7-0.30.10.50.70.80.60.2-0.3-1-1.6-1.9-1.8-1.2-0.50.20.711.10.9

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (6,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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