Saturday, December14, 2019
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Marine Weather and Tides
Tiburon, 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 7:15AMSunset 4:52PM Saturday December 14, 2019 8:33 AM PST (16:33 UTC) Moonrise 7:33PMMoonset 9:38AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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- 212 Am Pst Sat Dec 14 2019
Today..W winds 10 to 20 kt.
Tonight..NW winds 5 to 15 kt.
Sun..NW winds up to 10 kt.
Sun night..N winds up to 10 kt.
Mon..NE winds up to 10 kt.
Mon night..E winds 10 to 20 kt with gusts up to 25 kt.
Tue..E winds 5 to 10 kt. A chance of rain.
Wed..SE winds around 5 kt. A chance of rain.
PZZ500 212 Am Pst Sat Dec 14 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will increase today through Sunday as an upper level trough moves into northern california. Winds will switch back to the southeast Monday as the next weather system approaches. A long-period northwest swell will gradually decrease over the weekend.


7 Day Forecast for Marine Location Near Tiburon, CA
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location: 37.92, -122.42     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 141129 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 329 AM PST Sat Dec 14 2019

SYNOPSIS. Another frontal system will drop southward over the region late in the day bringing a renewed chance for light precipitation. Cooler and drier condition are then forecast from Sunday into early next week. Unsettled weather conditions appear to return for the latter half of next week and will potentially continue into next weekend.

DISCUSSION. as of 03:04 AM PST Saturday . A moist zonal flow persists over the region this morning in wake of yesterday's frontal passage. This has allowed for light rain to linger over portions of the region early this morning, mainly from the San Francisco Peninsula southward across the Central Coast. Rainfall amounts have been light overnight however, generally only adding up to a few hundredths of an inch. Precipitation has diminished over the North Bay where breaks in the cloud cover are being observed. This has allowed temperatures in that region to cool in to the upper 40s while 50s are being reported elsewhere across the region.

A deeper mid/upper level low is then forecast to drop into northern California late in the day and will drive a secondary frontal boundary across the region. Rainfall with this system will also be minimal overall with the best chances for measurable rainfall from San Francisco southward through tonight. Thus, much of the region will remain dry throughout the day with temperatures generally warming into the 50s. In wake of this system, a colder and drier air mass will advect across the region and result in clearing sky conditions by Sunday. Thus, look for much cooler overnight conditions with more widespread 30s likely across the interior valleys Sunday morning and more so by Monday morning when lower 40s to even upper 30s will be possible near the coast. These temperatures will likely be some of the coldest the region has seen so far this month. Dry and seasonably cool conditions will then persist into early next week as a ridge of high pressure builds over the region. This will not result in much warming trend however with daytime highs generally in the 50s.

The forecast models are in generally decent agreement with unsettled weather conditions returning to the region by the middle of next week as a mid/upper level trough and potentially a cut-off low approach from the west. Meanwhile, a much deeper plume of moisture will advect inland over far northern California by the latter half of next week. Thus, while details remain limited at this time, there will be the potential for periods of rain late in the week and potentially into next weekend. Stay tuned as this pattern may result in some travel issues across the state leading up to Christmas.

AVIATION. as of 3:30 AM PST Saturday . Low level moisture remains over the area this morning but an increasing west wind will help to raise cigs after 18Z. There will still be some clouds in the 4000-5000 foot range until the upper trough passes late Saturday night.

Vicinity of KSFO . MVFR cigs with bases around 2500 ft. Increasing west wind will help clear out the low clouds leaving a layer at 4000-5000 ft. This will linger through most of the day until the upper trough moves through tonight. West winds 10-15 kt gusting to 20 kt after 21Z.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Mostly IFR conditions improving to MVFR after 15-16Z. Cigs rising to VFR range after 19Z. West to northwest winds 5-10 kt increasing slightly during the day.

MARINE. as of 03:23 AM PST Saturday . Northwest winds will increase today through Sunday as an upper level trough moves into northern California. Winds will switch back to the southeast Monday as the next weather system approaches. A long-period northwest swell will gradually decrease over the weekend.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm



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
RCMC1 - 9414863 - Richmond, CA 1 mi46 min 55°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 3 mi46 min WNW 7 G 8.9 53°F 1018.9 hPa
FTPC1 - 9414290 - San Francisco, CA 8 mi52 min W 4.1 G 6 52°F 55°F1018.8 hPa
PXSC1 8 mi46 min 53°F 49°F
OBXC1 9 mi46 min 53°F 47°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 9 mi52 min W 2.9 G 4.1 52°F 1018.6 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 9 mi46 min WSW 7 G 9.9 52°F 1017.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 10 mi52 min WSW 4.1 G 5.1
LNDC1 11 mi52 min W 2.9 G 5.1 53°F 1018.6 hPa
AAMC1 - 9414750 - Alameda, CA 12 mi46 min 55°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 13 mi46 min W 9.9 G 11 52°F 1018 hPa
46237 - San Francisco Bar, CA (142) 15 mi34 min 55°F10 ft
UPBC1 18 mi46 min WNW 5.1 G 8
MZXC1 - 9415102 - Martinez-Amorco CA 18 mi52 min W 6 G 7 52°F 54°F1018.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 22 mi46 min 54°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi24 min NW 19 G 25 54°F 56°F1019.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi109 min W 5.1 48°F 1018 hPa47°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 29 mi52 min W 8 G 12 52°F 1017.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 30 mi52 min 54°F1019 hPa
RTYC1 - 9414523 - Redwood City, CA 31 mi52 min W 8 G 12 52°F 58°F1019.3 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 46 mi34 min NNW 16 G 19 55°F 1020.1 hPa49°F

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA17 mi39 minN 010.00 miFair46°F46°F100%1018.6 hPa
Oakland, Metro Oakland International Airport, CA19 mi41 minW 1110.00 miMostly Cloudy53°F46°F77%1018.7 hPa
Concord, Buchanan Field, CA20 mi41 minSW 610.00 miA Few Clouds51°F44°F77%1017 hPa
Napa, Napa County Airport, CA21 mi40 minW 610.00 miFair46°F45°F96%1017.3 hPa
San Francisco, San Francisco International Airport, CA21 mi98 minW 109.00 miMostly Cloudy54°F45°F72%1018.5 hPa
Hayward, Hayward Air Terminal, CA24 mi40 minWNW 810.00 miMostly Cloudy52°F46°F80%1019.7 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
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Last 24hrCalmN4CalmS64CalmSE3CalmCalmSW10SW13SW10SW10SW7
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1 day agoCalmCalmN3N7N5N5N3N4CalmCalmCalmN5N4CalmN4CalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoSE5SE4SE4SE4SE5SE4SE5SE5SE7SE4CalmCalmS3CalmSE3SE3E4CalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Chevron Oil Company Pier, Richmond, San Francisco Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Red Rock .1 E, San Francisco Bay, California Current
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Red Rock .1 E
Click for Map
Sat -- 03:54 AM PST     -0.01 knots Slack
Sat -- 05:47 AM PST     -0.88 knots Max Ebb
Sat -- 07:17 AM PST     Sunrise
Sat -- 08:23 AM PST     0.00 knots Slack
Sat -- 09:37 AM PST     Moonset
Sat -- 11:34 AM PST     0.96 knots Max Flood
Sat -- 02:30 PM PST     -0.00 knots Slack
Sat -- 04:51 PM PST     Sunset
Sat -- 05:55 PM PST     -2.03 knots Max Ebb
Sat -- 07:32 PM PST     Moonrise
Sat -- 09:26 PM PST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.41.10.6-0.1-0.7-0.9-0.6-0.20.20.60.90.90.70.3-0.3-1.1-1.8-2-1.7-1.1-0.30.41

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 (11,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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