Wednesday, January22, 2020
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Marine Weather and Tides
Rollingwood, 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 7:19AMSunset 5:22PM Wednesday January 22, 2020 2:22 PM PST (22:22 UTC) Moonrise 5:43AMMoonset 3:27PM Illumination 5% Phase: Waning Crescent; Moon at 27 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- 202 Pm Pst Wed Jan 22 2020
Rest of today..NW winds around 5 kt. Patchy fog late this morning.
Tonight..N winds up to 10 kt.
Thu..NE winds up to 10 kt.
Thu night..NW winds up to 10 kt.
Fri..SW winds up to 10 kt.
Fri night..NW winds up to 10 kt. A chance of rain.
Sat..S winds up to 10 kt. Rain likely.
Sun..W winds 5 to 10 kt. Rain likely.
PZZ500 202 Pm Pst Wed Jan 22 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Seas will gradually decrease overnight into Thursday with light winds over the waters. Generally light winds will persist Friday and Saturday with high pressure over the region. However a long period swell will pass through waters Friday and Saturday with potentially dangerous surf conditions. The next storm approaches later Saturday into Sunday with increasing southery winds followed by another large northwest swell behind the front Sunday into Monday.


7 Day Forecast for Marine Location Near Rollingwood, CA
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location: 37.96, -122.33     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 222145 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 145 PM PST Wed Jan 22 2020

SYNOPSIS. Mainly dry weather conditions along with a gradual warming trend is expected through Friday. A weak storm system moving into northern California will bring a chance of precipitation to the region this upcoming weekend.

DISCUSSION. as of 01:45 PM PST Wednesday . Temperatures over the region this afternoon are generally in the 50s to near 60 deg F with clearing skies over the North Bay. Meanwhile, abundant low level moisture lingering over the region continues to produce a mix of sun and clouds over the southern two-thirds of the region. Look for areas of fog to develop again overnight in the North Bay and East Bay Valleys in response to the light winds and lingering moisture in place.

Mainly dry weather conditions will persist through late week with a gradual warming trend region-wide. Will likely see more widespread 60s during the afternoon hours by Thursday, Friday and potentially Saturday as high pressure builds over the region. Cannot even rule out a few of the warmer interior locations of the Central Coast approaching 70s deg F late this week. The only chance of precipitation late in the week will be over northern Sonoma County late Thursday into Friday when a system passes inland to the north. Regardless, widespread precipitation is not likely.

The next chance of widespread rainfall is forecast for this upcoming weekend when a mid/upper level trough pushes into the Pacific Northwest. This will drag a frontal boundary into the North Bay sometime around Friday night before moving southward through the weekend. While this system looks to bring some precipitation to much of the region, widespread heavy rainfall is unlikely. Additionally, impacts from this system will be minimal with mostly beneficial rainfall. Temperatures will also cool late in the weekend into early next week in response to the upper level trough. Precipitation chances diminish early next week for much of the region as weak ridging builds back into place. However, unsettled conditions are likely to persist over northern California through at least the first half of next week as systems push inland. This may allow for some light rainfall over the North Bay, but again widespread impacts are unlikely.

AVIATION. as of 10:05 AM PST Wednesday . For 18z TAFs. Boundary that moved through overnight has left abundant low level moisture with low cigs and fog. Most terminals will see slow clearing after 19-20z. Once cigs clear, light winds will remain and expect vfr through about 04-06z this evening. Light winds, building ridge and moist boundary layer suggest fog and low cloud potential will return overnight and into Thursday morning.

Vicinity of KSFO . 1 minute satellite shows clearing to the north and west of SFO while low clouds are over the approach and in the southern edge of the bay with San Mateo bridge still 3sm bkn007. Expect vfr to persist over the terminal but less confidence for approach. Cigs expected to return for Thursday morning.

SFO Bridge Approach . Clouds are over the approach and southern edge of Bay. Light winds and building ridge suggest only a slow burn through early this afternoon. San Carlos/Palo Alto and San Mateo Bridge still reporting low cigs under 1000 feet. Best estimate for clearing at approach will be after 20-21z.

Monterey Bay Terminals . Comms issues continue with Salinas ASOS and FAA lines. Monterey still ovc014 with slow clearing this afternoon. Low cigs likely to return overnight.

MARINE. as of 09:52 AM PST Wednesday . Light winds across most of the waters through midday, with locally breezy southeast winds along the southern coast. Later this afternoon and evening, winds shift to the north and strengthen across most of the waters through tomorrow. A WNW swell will peak today generating hazardous sea conditions for smaller vessels. Another longer period WNW swell will then arrive Thursday night into Friday.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pt Reyes 0-10 nm until 3 PM SCA . Pt Reyes to Pigeon Pt 0-10 nm until 3 PM SCA . Pigeon Pt to Pt Pinos 0-10 nm until 3 PM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 3 PM SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 9 PM



PUBLIC FORECAST: RGass AVIATION: RWW MARINE: RWW

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPXC1 - 9414847 - Richmond (Point Potrero), CA 4 mi52 min 59°F 1024.3 hPa
RCMC1 - 9414863 - Richmond, CA 5 mi52 min 53°F 53°F1023.7 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 7 mi52 min 52°F 1023.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 8 mi35 min NNW 6 53°F 1024 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 10 mi52 min 51°F 1024.1 hPa
OBXC1 11 mi52 min 53°F 53°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 11 mi112 min NNW 7 G 8.9
PXSC1 11 mi52 min 53°F 53°F
UPBC1 12 mi112 min ENE 2.9 G 2.9
PXOC1 - 9414311 - San Francisco (Pier 1), CA 12 mi52 min 53°F 1023.1 hPa
LNDC1 12 mi52 min 56°F 1023.9 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 12 mi52 min 56°F 51°F1023.9 hPa
AAMC1 - 9414750 - Alameda, CA 13 mi52 min 56°F 52°F1024 hPa
FTPC1 - 9414290 - San Francisco, CA 13 mi52 min 54°F 54°F1024.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 17 mi52 min 56°F 49°F1023.6 hPa
46237 - San Francisco Bar, CA (142) 20 mi82 min 53°F9 ft
SFXC1 - San Francisco Bay Reserve, CA 23 mi97 min ESE 2.9
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 24 mi52 min 58°F 1023.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 31 mi32 min W 3.9 G 7.8 54°F 55°F10 ft1024.7 hPa
RTYC1 - 9414523 - Redwood City, CA 32 mi52 min 59°F 52°F1024.3 hPa
PRYC1 - 9415020 - Point Reyes, CA 34 mi52 min 53°F1024 hPa

Wind History for Point Potrero Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA15 mi29 minNNW 410.00 miPartly Cloudy62°F48°F62%1022.3 hPa
Napa, Napa County Airport, CA17 mi28 minWSW 610.00 miFair57°F46°F67%1023 hPa
Novato / Gnoss Field, CA17 mi27 minESE 310.00 miFair59°F42°F55%1024.4 hPa
Oakland, Metro Oakland International Airport, CA19 mi29 minWNW 610.00 miPartly Cloudy58°F50°F75%1023.9 hPa
Hayward, Hayward Air Terminal, CA24 mi28 minW 710.00 miPartly Cloudy58°F50°F75%1024.5 hPa
San Francisco, San Francisco International Airport, CA24 mi26 minNNE 610.00 miPartly Cloudy55°F50°F83%1023.4 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Last 24hrS12S11S9S10S10S8SW10SW9S8S4SE3SW4SE5CalmCalmCalmCalmCalmS3NW6N3N3N4N4
1 day agoN3NW3CalmCalmN3CalmS3CalmCalmCalmCalmCalmS3SE5SE3CalmNE3CalmN3N6SW3S10S7S12
2 days ago--NE6NE8NE7CalmCalmCalmCalmCalmW3S4N4NE4N4NW5NW4CalmSE3N3CalmCalmCalmCalmCalm

Tide / Current Tables for Richmond, Chevron Oil Pier, California (2)
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Richmond
Click for Map
Wed -- 03:36 AM PST     2.81 feet Low Tide
Wed -- 05:42 AM PST     Moonrise
Wed -- 07:21 AM PST     Sunrise
Wed -- 09:40 AM PST     6.64 feet High Tide
Wed -- 03:27 PM PST     Moonset
Wed -- 04:45 PM PST     -0.77 feet Low Tide
Wed -- 05:21 PM PST     Sunset
Wed -- 11:54 PM PST     5.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.643.42.92.93.3455.96.56.66.14.93.21.60.2-0.6-0.7-0.30.51.62.844.8

Tide / Current Tables for Pinole Point 1.2 mi W, San Pablo Bay, California Current
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Pinole Point 1.2 mi W
Click for Map
Wed -- 12:19 AM PST     -0.00 knots Slack
Wed -- 02:26 AM PST     -0.49 knots Max Ebb
Wed -- 04:32 AM PST     0.00 knots Slack
Wed -- 05:42 AM PST     Moonrise
Wed -- 07:07 AM PST     0.90 knots Max Flood
Wed -- 07:21 AM PST     Sunrise
Wed -- 11:03 AM PST     -0.00 knots Slack
Wed -- 03:11 PM PST     -1.26 knots Max Ebb
Wed -- 03:26 PM PST     Moonset
Wed -- 05:21 PM PST     Sunset
Wed -- 06:54 PM PST     0.00 knots Slack
Wed -- 09:32 PM PST     0.82 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.1-0.2-0.5-0.5-0.20.20.70.90.90.70.40-0.5-0.9-1.1-1.3-1.2-0.9-0.400.50.80.80.7

Weather Map
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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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (17,4,5,8)
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Ground Weather Radar Station Sacramento, 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.