Friday, February21, 2020
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Marine Weather and Tides
Corte Madera, 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 6:51AMSunset 5:56PM Friday February 21, 2020 6:28 AM PST (14:28 UTC) Moonrise 6:05AMMoonset 4:12PM 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- 231 Am Pst Fri Feb 21 2020
Today..NW winds up to 10 kt.
Tonight..W winds up to 10 kt.
Sat..SW winds 5 to 15 kt.
Sat night..W winds 5 to 15 kt.
Sun..W winds up to 10 kt.
Sun night..W winds 5 to 15 kt.
Mon..NW winds up to 10 kt.
Tue..NW winds up to 10 kt.
PZZ500 231 Am Pst Fri Feb 21 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... An upper level low located 500 miles southwest of the Monterey peninsula will move to near point conception by early Saturday morning then quickly move eastward over the weekend. The low will bring a chance of showers over the southern coastal waters late tonight and Saturday. A strong high pressure system will build over the eastern pacific late in the weekend and next week. Northwest winds will increase over the northern waters by early tonight and increase to the south on Saturday. Expect moderate period northwest swell through early next week. A long period northwest swell is likely mid next week.


7 Day Forecast for Marine Location Near Corte Madera, CA
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location: 37.94, -122.51     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 211258 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 458 AM PST Fri Feb 21 2020

SYNOPSIS. Warmer temperatures and dry conditions Friday. A slight chance exists for light precipitation for the Central Coast late Friday into Saturday morning with minimal accumulations. High pressure builds over the weekend bringing a warming trend next week and keeping dry conditions in place around the Bay Area.

DISCUSSION. as of 02:57 AM PST Friday . High clouds continue move over the Bay Area and the Central Coast, as a low pressure system over the Eastern Pacific moves eastward. The high clouds are keeping temperatures on the warmer side with forecasted values in the 40s, and isolated areas touching the upper 30s. San Francisco itself should be around 50 degrees. Cloud cover will increase as the system draws closer to Southern California.

Dry and mild conditions will prevail on Friday for San Francisco and points north of San Jose. The Central Coast however has a slight chance to see some light precipitation Friday evening and into Saturday morning as the low pressure system moves eastward. Rain is possible, but most areas will only see a trace amount, with higher elevations in Southern Monterey County most likely to see precip. Accumulations are forecast to be less than a tenth of an inch, with isolated amounts slightly higher at those same elevated locations.

Winds are expected to be breezy as the low approaches the coastline and shift to the southeast as the low continues inland. Behind the low, an upper level ridge will build and return the wind flow to onshore on Saturday. Temperatures will remain mild with dry conditions around the region. These dry conditions will remain through next week as the ridge grows, but a warming trend is forecast late in the week as high pressure intensifies.

With the exception of those that will see light rain with the passing system Friday night, it looks more and more likely that February will see little to no rain for the area. In the realm of wishcasting, the GFS has started showing signs of a longer wave trough moving through in early March. The ECMWF has a similar trough approaching. But of course, the models are different and therefore so are their depictions of what may happen. The Euro is a couple days earlier passing over the Bay Area, while the GFS is slightly later and a bit more to the south. That being said, it is still well over 200 hours out and hardly anything more than a desperate attempt to sound optimistic.

AVIATION. as of 4:58 AM PST Friday . A band of echoes in advance of an upper low well to the southwest of the Monterey Peninsula is showing up on KMUX radar as close as the southern inner waters and southern Monterey County this morning; steepening 700 mb to 500 mb temperature lapse rates through 18z today will accompany these echoes per NAM forecasts, similar lapse rates to where a batch of lightning occurred much closer to the low center well to our southwest earlier this morning. That instability however was next to a dry air intrusion behind the low and closer to the coldest pool of mid level air. Models have struggled with forecasting qpf with this low, difficulty primarily with the potential for mid level convection, but also trying to model the broader scale dynamic lift and consequently if/where it will precipitate. The low has got caught up in and reinvigorated by the subtropical jet stream. 12z TAFs continue VFR then cloud ceilings lowering, lowest to the south, as well as include isolated showers, and a period of rain reaching the north Central Coast. Radar and satellite will be monitored, TAFs amended as needed.

Vicinity of KSFO . VFR. Mid to high level cloud cover today and tonight, generally trending lower with time. Will monitor radar and satellite and see how far north any precipitation may get with this system.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR. Mid level clouds lowering, a few rain showers are possible this morning with a band of echoes moving up from the south. Model forecasts do not indicate any precipitation this morning, but do show better chances later today into tonight.

MARINE. as of 2:57 AM PST Friday . An upper level low located 500 miles southwest of the Monterey Peninsula will move to near Point Conception by early Saturday morning then quickly move eastward over the weekend. The low will bring a chance of showers over the southern coastal waters late tonight and Saturday. A strong high pressure system will build over the eastern Pacific late in the weekend and next week. Northwest winds will increase over the northern waters by early tonight and increase to the south on Saturday. Expect moderate period northwest swell through early next week. A long period northwest swell is likely mid next week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. NONE.



PUBLIC FORECAST: DK AVIATION/MARINE: Canepa

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIBC1 - Tiburon Pier, San Francisco Bay, CA 5 mi48 min W 1.9 50°F 1019 hPa
RCMC1 - 9414863 - Richmond, CA 5 mi59 min N 1.9 G 6 53°F 54°F1018.7 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi59 min N 7 G 8.9 52°F 1019.3 hPa
FTPC1 - 9414290 - San Francisco, CA 10 mi65 min SSE 1.9 G 1.9 51°F 55°F1019.2 hPa
PXSC1 11 mi59 min 53°F 50°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 12 mi59 min WNW 4.1 G 7 52°F 1018.1 hPa
46237 - San Francisco Bar, CA (142) 13 mi59 min 53°F4 ft
OBXC1 13 mi59 min 54°F 46°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 13 mi59 min N 8.9 G 14 54°F 1019 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi59 min N 8.9 G 12
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 15 mi59 min SSE 1.9 G 2.9 50°F 1019 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi59 min Calm G 2.9 53°F 56°F1019 hPa
LNDC1 16 mi59 min SE 1.9 G 2.9 52°F 1018.9 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 21 mi59 min SW 4.1 G 4.1 49°F 55°F1019.2 hPa
UPBC1 22 mi59 min WNW 5.1 G 6
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 22 mi39 min NNW 5.8 G 5.8 53°F 53°F4 ft1019.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 26 mi59 min SSW 5.1 G 7 49°F 54°F1018.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 31 mi104 min Calm
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 34 mi59 min WSW 1 G 1.9 49°F 1019.1 hPa
RTYC1 - 9414523 - Redwood City, CA 34 mi59 min W 2.9 G 4.1 52°F 57°F1019.5 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 45 mi39 min N 7.8 G 12 54°F 53°F5 ft1018.9 hPa51°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 47 mi39 min NW 3.9 G 3.9 51°F6 ft1019.7 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA14 mi34 minN 06.00 miFog/Mist43°F42°F100%1019.6 hPa
Napa, Napa County Airport, CA22 mi35 minN 010.00 miFair41°F35°F79%1018.4 hPa
Oakland, Metro Oakland International Airport, CA23 mi36 minN 010.00 miA Few Clouds49°F39°F69%1019.2 hPa
San Francisco, San Francisco International Airport, CA23 mi33 minS 310.00 miMostly Cloudy51°F41°F69%1018.9 hPa
Petaluma Municipal Airport, CA23 mi34 minN 010.00 miFair43°F42°F100%1019.6 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
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1 day agoCalmCalmCalmCalmS4E5SE444SE3NW3N5N6CalmCalmCalmCalmCalmCalmCalmCalmS6S4N5
2 days agoCalmCalmCalmCalmCalmCalmCalm4SE5CalmN11N5N4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Corte Madera Creek, San Francisco Bay, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Corte Madera Creek
Click for Map
Fri -- 04:40 AM PST     2.51 feet Low Tide
Fri -- 06:05 AM PST     Moonrise
Fri -- 06:53 AM PST     Sunrise
Fri -- 10:24 AM PST     6.11 feet High Tide
Fri -- 04:12 PM PST     Moonset
Fri -- 05:22 PM PST     -0.37 feet Low Tide
Fri -- 05:54 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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54.63.93.12.62.52.93.74.75.56.165.34.12.61.20.2-0.3-0.30.31.32.53.74.6

Tide / Current Tables for Point San Quentin 1.9 mi E, San Francisco Bay, California Current
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Point San Quentin 1.9 mi E
Click for Map
Fri -- 12:49 AM PST     -0.00 knots Slack
Fri -- 03:45 AM PST     -1.33 knots Max Ebb
Fri -- 06:04 AM PST     Moonrise
Fri -- 06:38 AM PST     0.00 knots Slack
Fri -- 06:52 AM PST     Sunrise
Fri -- 09:23 AM PST     1.39 knots Max Flood
Fri -- 12:02 PM PST     -0.00 knots Slack
Fri -- 03:39 PM PST     -2.76 knots Max Ebb
Fri -- 04:12 PM PST     Moonset
Fri -- 05:54 PM PST     Sunset
Fri -- 07:26 PM PST     0.01 knots Slack
Fri -- 10:26 PM PST     1.89 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.8-0.2-0.9-1.3-1.3-1.1-0.60.311.41.30.90-1.1-2.1-2.7-2.7-2.4-1.7-0.60.61.41.91.8

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 (9,2,3,4)
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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.