Tuesday, July14, 2020
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Marine Weather and Tides
Oakland, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 5:56AMSunset 8:32PM Monday July 13, 2020 9:45 PM PDT (04:45 UTC) Moonrise 12:07AMMoonset 1:09PM Illumination 37% Phase: Third Quarter Moon; Moon at 23 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- 838 Pm Pdt Mon Jul 13 2020
.small craft advisory in effect until 11 pm pdt this evening...
.small craft advisory in effect from Tuesday morning through Tuesday evening...
Tonight..SW winds 5 to 15 kt.
Tue..SW winds 5 to 15 kt.
Tue night..SW winds 5 to 15 kt.
Wed..SW winds 5 to 15 kt.
Wed night..SW winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
Thu night..SW winds 5 to 15 kt.
Fri..SW winds 5 to 15 kt.
Sat..SW winds 5 to 15 kt.
PZZ500 838 Pm Pdt Mon Jul 13 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds prevail over the northern and outer coastal waters, with occasional stronger gusts possible. These winds will generate steep fresh swell resulting in hazardous conditions for small craft vessels. Winds will also be strong on Tuesday through the golden gate on toward the delta. Winds are forecast to shift to the south midweek for the southern and inner coastal waters as the next system approaches. A longer period south swell will mix with the steep fresh northwest swell.


7 Day Forecast for Marine Location Near Oakland, CA
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location: 37.78, -122.25     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 140418 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 918 PM PDT Mon Jul 13 2020

SYNOPSIS. A few additional degrees of inland cooling is expected on Tuesday as onshore flow increases and high pressure weakens. Temperatures will then likely remain near seasonal averages for the remainder of the week and into next weekend. Expect increasing night and morning low clouds through midweek.

DISCUSSION. As of 9:15 PM PDT Monday . An upper ridge centered over the Desert Southwest has been weakening since yesterday. This resulted in a rapid deepening of the marine layer, which is currently about 2000 feet deep per the Fort Ord Profiler. In addition, onshore surface pressure gradients have increased since yesterday. These developments allowed marine air to penetrate well inland, resulting in high temperatures today that were as much as 20 degrees cooler than Sunday. The most significant cooling occurred in the interior valleys. Temperatures today settled back to near seasonal averages in most areas, and were even cooler than average in some coastal locations.

Evening satellite imagery reveals low clouds have already developed well inland from Monterey Bay and are nearly reaching Pacheco Pass. Low clouds have also begun to develop in the East and North Bay. We can expect more widespread morning low clouds for inland areas over the next few days.

As we move into Tuesday and Wednesday, the models develop weak southerly low level flow along our coast, which will result in further cooling in locations that typically cool under southerly flow such as Santa Rosa, Santa Cruz, and Big Sur.

A weak upper trough is forecast to to develop near the West Coast by Thursday and this will maintain normal, to slightly cooler than normal, temperatures through the end of the work week and into next weekend.

Monsoon moisture is forecast to increase across the Sierra by Thursday and maybe drift farther west. However, based on latest model data, this moisture is not likely to impact our area.

AVIATION. as of 4:52 PM PDT Monday . for 00z TAFs. VFR inland with stratus clouds hugging the coastline allowing for a few clouds over the SF Bay and MVFR conditions over the Monterey Peninsula. Winds remain onshore and breezy, with stronger gusts around 20 kts at several terminals. An earlier and more widespread return of low clouds for IFR conditions is forecast tonight, through 17z on Tuesday. Winds will reduce somewhat overnight, but remain onshore. VFR forecast for Tuesday afternoon as onshore winds increase.

Vicinity of KSFO . A FEW clouds linger around terminals as winds remain breezy with occasional stronger gusts. With the marine layer continuing to deepen, the forecast remains with chances of lower clouds at the terminal in the early morning hours of Tuesday. Winds will remain breezy through the TAF period. VFR forecast for Tuesday afternoon as increasing winds out of the northwest can be expected.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . MVFR as stratus clouds sit inside Monterey Bay and are slowly nudging into the Salinas Valley. Expect cigs to lower and provide IFR conditions and patchy overnight. Clouds are expected to linger on Tuesday, but lift to MVFR levels as winds increase, with stronger gusts expected in the Salinas Valley.

MARINE. As of 8:38 PM PDT Monday . Northwest winds prevail over the northern and outer coastal waters, with occasional stronger gusts possible. These winds will generate steep fresh swell resulting in hazardous conditions for small craft vessels. Winds will also be strong on Tuesday through the Golden Gate on toward the Delta. Winds are forecast to shift to the south midweek for the southern and inner coastal waters as the next system approaches. A longer period south swell will mix with the steep fresh northwest swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . SF Bay until 11 PM



PUBLIC FORECAST: Dykema AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LNDC1 2 mi58 min 1012.3 hPa
AAMC1 - 9414750 - Alameda, CA 3 mi58 min 1012.6 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 5 mi58 min 1012.2 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 8 mi58 min 1011.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi58 min 1012 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi58 min 1012.1 hPa
RCMC1 - 9414863 - Richmond, CA 13 mi58 min 1011.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 13 mi42 min S 8.9 55°F 1011 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi58 min 1010.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi58 min 1010.1 hPa
RTYC1 - 9414523 - Redwood City, CA 19 mi58 min 1012.2 hPa
46237 - San Francisco Bar, CA (142) 20 mi76 min 56°F4 ft
PCOC1 - 9415144 - Port Chicago, CA 22 mi58 min 1009.6 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 26 mi58 min 1008.6 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 31 mi26 min WSW 7.8 G 12 55°F 55°F1012.6 hPa52°F
SFXC1 - San Francisco Bay Reserve, CA 31 mi61 min W 8.9
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi26 min WNW 12 G 18 57°F 1013.7 hPa54°F

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA6 mi53 minW 98.00 miMostly Cloudy61°F52°F72%1012.2 hPa
Hayward, Hayward Air Terminal, CA11 mi52 minW 710.00 miA Few Clouds60°F52°F75%1013 hPa
San Francisco, San Francisco International Airport, CA12 mi50 minW 1010.00 miA Few Clouds59°F50°F72%1012 hPa
Concord, Buchanan Field, CA17 mi53 minS 14 G 2010.00 miFair62°F51°F67%1008.9 hPa
San Carlos Airport, CA17 mi53 minWSW 310.00 miA Few Clouds63°F50°F64%1011.8 hPa
Livermore, Livermore Municipal Airport, CA23 mi53 minWNW 1210.00 miFair61°F53°F75%1010.9 hPa
Half Moon Bay Airport, CA23 mi51 minWSW 35.00 miFog/Mist55°F51°F88%1013.5 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hrW13W11W10W7NW3CalmN3CalmSW8SW10SW10W11W9W5NW5NW10NW9W12W10W11W96W10
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1 day agoNW5NW4CalmCalmNW3NW7NW7N3CalmNW5NW7W7W6W7W8NW9NW13NW15W16W13W14W14W16W9
2 days agoNW7NW4NW6N3CalmCalmCalmCalmCalmNW3NW5NW7W7W6NW7NW11W12NW11W15W12NW11W13W13W9

Tide / Current Tables for Oakland Harbor, Park Street Bridge, San Francisco Bay, California
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Oakland Harbor
Click for Map
Tue -- 01:32 AM PDT     Moonrise
Tue -- 02:43 AM PDT     1.46 feet Low Tide
Tue -- 05:58 AM PDT     Sunrise
Tue -- 08:48 AM PDT     4.13 feet High Tide
Tue -- 01:46 PM PDT     2.23 feet Low Tide
Tue -- 03:06 PM PDT     Moonset
Tue -- 08:19 PM PDT     6.16 feet High Tide
Tue -- 08:30 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.821.61.51.82.433.644.13.93.42.82.42.22.53.24.155.76.16.15.54.6

Tide / Current Tables for Oakland Harbor WebStreeter Street, San Francisco Bay, California Current
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Oakland Harbor WebStreeter Street
Click for Map
Tue -- 01:32 AM PDT     Moonrise
Tue -- 02:31 AM PDT     0.00 knots Slack
Tue -- 05:35 AM PDT     0.54 knots Max Flood
Tue -- 05:58 AM PDT     Sunrise
Tue -- 08:24 AM PDT     -0.00 knots Slack
Tue -- 10:30 AM PDT     -0.49 knots Max Ebb
Tue -- 02:02 PM PDT     0.00 knots Slack
Tue -- 03:07 PM PDT     Moonset
Tue -- 05:13 PM PDT     0.59 knots Max Flood
Tue -- 08:09 PM PDT     -0.00 knots Slack
Tue -- 08:30 PM PDT     Sunset
Tue -- 11:07 PM PDT     -0.94 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.5-0.20.20.40.50.50.40.1-0.2-0.5-0.5-0.4-0.2-00.20.50.60.50.40.1-0.4-0.8-0.9

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 (0,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.