Tuesday, November20, 2018 L-36.com


Marine Weather and Tides
Corte Madera, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:55AMSunset 4:56PM Tuesday November 20, 2018 5:39 AM PST (13:39 UTC) Moonrise 3:49PMMoonset 4:00AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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 San Francisco Bay North Of The Bay Bridge- 218 Am Pst Tue Nov 20 2018
.small craft advisory in effect from late tonight through Wednesday afternoon...
Today..NE winds 10 kt...becoming S in the afternoon. Haze.
Tonight..S winds 5 to 15 kt...increasing to 15 to 25 kt late tonight. Chance of rain after midnight.
Wed..SE winds 15 to 25 kt. Rain in the morning, then showers in the afternoon.
Wed night..SW winds 5 to 15 kt. Showers in the evening, then showers likely after midnight.
Thanksgiving day..SW winds 5 to 15 kt...becoming S 15 to 25 kt. Chance of showers in the morning, then chance of rain in the afternoon. Rain.
Fri..SW winds 15 to 25 kt...decreasing to 5 to 15 kt. Rain, then showers likely.
Sat..W winds 10 kt. Slight chance of showers.
PZZ500 218 Am Pst Tue Nov 20 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Southerly winds will increase this evening into Wednesday as a cold front approaches the coastal waters and then moves inland. Moderately strong winds and occasional gale force gusts may be possible with the frontal passage tonight through early Wednesday with a slight chance of Thunderstorms on Wednesday. Winds will ease Thursday before the next system moves in late Thursday night into Friday. A small mixed W and S swell will continue through Tuesday before a longer period northwest swell train arrives midweek.


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 201201
afdmtr
area forecast discussion
national weather service san francisco bay area
401 am pst Tue nov 20 2018

Synopsis Today will be the final day of hazy smoky conditions.

An approaching weather system will bring widespread rain and
gusty winds to the region late tonight and Wednesday, with
scattered showers continuing through Wednesday night. A second
system is expected to bring additional rainfall to the area from
Thursday afternoon through Friday. Dry weather will likely return
to most areas over the weekend.

Discussion As of 3:40 am pst Tuesday... Skies are mostly clear
early this morning except for patchy low clouds at the coast.

Visibilities in the san francisco bay area range from 3 to 6 miles
in haze and smoke. These visibilities represent a slight
improvement from the past several days and the hrrr smoke model
indicates that air quality will continue to slowly improve
through today. Much improved air quality will then occur by late
tonight and Wednesday thanks to rain and gusty winds that will
arrive with an approaching pacific weather system. In the
meantime, expect one more day of hazy skies, light winds, and mild
temperatures.

The models have come into relatively good agreement regarding two
weather systems due to impact our area this week. IR satellite
imagery currently shows the first incoming system offshore with a
frontal boundary along 135w and a large area of convective clouds
behind the front indicative of a cold and unstable airmass.

Precipitation is expected to begin spreading onshore late
tonight, but the bulk of the precipitation with this first system
is expected to fall on Wednesday as a frontal boundary sweeps
across our region. Rainfall intensity with this first system is
expected to be mostly light to moderate, but a brief period of
heavy rain is possible along the frontal boundary as it moves
through our area from late Wednesday morning through Wednesday
afternoon. In addition, isolated thunderstorms are possible
Wednesday afternoon and evening as the cold and unstable airmass
behind the front arrives. The models indicate that the most
unstable airmass will be offshore. So if thunderstorms do develop,
they will most likely be over our coastal waters. However, both
the NAM and GFS are forecasting some of this unstable air to make
its way inland by late Wednesday. Have therefore added slight
thunderstorm chances to coastal land areas on Wednesday evening.

Southerly winds are forecast to increase late tonight in advance
of the incoming system. Winds will be strongest on Wednesday just
ahead of the frontal boundary. Strongest winds are expected near
the ocean and in the hills where local gusts as high as 40 mph are
likely. Winds are not expected to be strong enough to warrant a
wind advisory.

Scattered showers will continue behind the front through late
Wednesday night and a few showers may linger until about sunrise
on thanksgiving morning. A brief period of dry weather is then
expected before the second system approaches from the northwest
and begins to generate warm advection rainfall across the north
bay on Thursday afternoon and evening. Rain is then expected to
spread gradually south across much of the rest of our forecast
area from late Thursday night through Friday.

The first system is forecast to generate rather uniform rainfall
amounts across our region, with rain totals of a half inch to an
inch expected in most areas from late Tuesday night through
Wednesday night. Some of the wetter locations in the coastal hills
may see up to 1.5 inches with the first system. The second system
will focus its heaviest rainfall across the north bay, with
rainfall amounts expected to taper off significantly farther to
the south. Rainfall totals from Thursday afternoon through late
Friday are forecast to range from 0.75-2.50 inches in the north
bay, from 0.25-0.75 inches across the remainder of the sf bay area
and santa cruz county, and only about a quarter inch or less
across monterey and san benito counties. Gusty winds are also
expected with the second system, mainly across the sf bay area
from late Thursday through midday Friday.

Showers are expected to taper off on Friday night and dry weather
is likely to return to most areas by Saturday. In fact, the models
are in rather good agreement in forecasting a shortwave ridge over
california through the upcoming weekend and into the early part
of next week, resulting in dry conditions and mild temperatures.

Longer range models, especially the gfs, indicate the potential
for significant rainfall later next week, in the Wednesday-
Thursday time frame, as a potential atmospheric river takes aim at
northern and central california.

Aviation As of 4:00 am pst Tuesday... For 12z tafs. Skies have
cleared out for the most part this morning as the system that
brought us the high clouds overnight has pushed to the east taking
the clouds with it. A few patches of stratus have developed along
the coast this morning however they will not become widespread.

An approaching cold front will bring the next wave of high clouds
our way later today with CIGS not expected to lower till late
tonight. Rain will accompany the frontal boundary tonight with wet
runways anticipated by Wednesday morning. Smoke will continue to
impact area terminals with reduced vsbys and limiting slant range
vsbys on approach throughout the bay area. Light winds expected
through much of the day with winds forecast to strengthen with the
arrival of the storm.

Vicinity of ksfo... Light winds will prevail through
this evening. Winds are forecast to strengthen with the arrival
of the front that is anticipated to move into the area tonight
bringing rain to area terminals. Smoke will continue to reduce
vsbys today. However visibility will gradually improve today
through Wednesday with the arrival of a storm system.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Light winds will prevail through late
this evening. Winds are forecast to strengthen with the arrival
of the front that is anticipated to move into the area tonight
bringing rain to area terminals. Smoke will continue to reduce
vsbys today. However visibility will gradually improve today
through Wednesday with the arrival of a storm system.

Marine As of 2:18 am pst Tuesday... Southerly winds will
increase this evening into Wednesday as a cold front approaches
the coastal waters and then moves inland. Moderately strong winds
and occasional gale force gusts may be possible with the frontal
passage tonight through early Wednesday with a slight chance of
thunderstorms on Wednesday. Winds will ease Thursday before the
next system moves in late Thursday night into Friday. A small
mixed W and S swell will continue through Tuesday before a longer
period northwest swell train arrives midweek.

Mtr watches warnings advisories
Tday None.

Public forecast: dykema
aviation marine: cw
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 5 mi39 min ENE 1.9 G 2.9 50°F 56°F1015.3 hPa (-0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi39 min ENE 2.9 G 4.1 50°F 1016 hPa (-0.0)
FTPC1 - 9414290 - San Francisco, CA 10 mi39 min SSW 1.9 G 2.9 50°F 55°F1015.8 hPa (-0.3)
PXSC1 11 mi39 min 53°F 47°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 12 mi39 min WNW 1.9 G 2.9 52°F 1014.6 hPa (-0.3)
OBXC1 13 mi39 min 52°F 47°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 13 mi39 min NE 4.1 G 5.1 50°F 1015.7 hPa (-0.0)
46237 - San Francisco Bar, CA (142) 13 mi69 min 55°F3 ft
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi39 min NE 4.1 G 5.1
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 15 mi45 min ESE 2.9 G 4.1 50°F 1015.6 hPa
LNDC1 16 mi39 min NE 5.1 G 6 48°F 1015.5 hPa (-0.3)
AAMC1 - 9414750 - Alameda, CA 16 mi39 min NNE 1.9 G 5.1 49°F 56°F1015.8 hPa (-0.3)
MZXC1 - 9415102 - Martinez-Amorco CA 21 mi39 min SW 1 G 1.9 46°F 55°F1015.9 hPa (-0.0)42°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 22 mi29 min SE 3.9 G 3.9 55°F 54°F1015.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 25 mi39 min ESE 6 G 8 55°F1015.1 hPa (+0.0)
PCOC1 - 9415144 - Port Chicago, CA 26 mi39 min SW 2.9 G 4.1 45°F 56°F1015.9 hPa (-0.3)
SFXC1 - San Francisco Bay Reserve, CA 31 mi114 min Calm 32°F 1016 hPa29°F
RTYC1 - 9414523 - Redwood City, CA 34 mi39 min WNW 1.9 G 2.9 46°F 57°F1015.8 hPa (-0.7)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 34 mi39 min W 1.9 G 2.9 43°F 1015.5 hPa (-0.6)
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 47 mi29 min ESE 5.8 G 7.8 57°F1015.5 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA14 mi44 minN 04.00 miFog/Mist34°F32°F93%1015.9 hPa
Napa, Napa County Airport, CA22 mi45 minN 54.00 miHaze Smoke34°F28°F82%1015.1 hPa
Petaluma Municipal Airport, CA23 mi44 minN 04.00 miFog/Mist32°F32°F100%1015.9 hPa
San Francisco, San Francisco International Airport, CA23 mi43 minN 06.00 miPartly Cloudy with Haze46°F39°F79%1015.2 hPa
Oakland, Metro Oakland International Airport, CA23 mi46 minN 44.00 miHaze Smoke46°F36°F68%1015.9 hPa

Wind History from DVO (wind in knots)
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Last 24hrS4S7SW5S7S7S7S7S9S5S5SW5SW4S6CalmCalmCalmCalmCalmCalmS4S5S4N5Calm
1 day agoN4CalmCalmCalmCalmS54S7S6S5CalmCalmCalmCalmCalmS5CalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalm3CalmSE4CalmCalmSE3CalmN7NW6CalmN3CalmCalmCalmCalmCalmCalmN4CalmN4

Tide / Current Tables for Corte Madera Creek, San Francisco Bay, California
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Corte Madera Creek
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Tue -- 03:26 AM PST     1.40 feet Low Tide
Tue -- 04:00 AM PST     Moonset
Tue -- 06:56 AM PST     Sunrise
Tue -- 09:45 AM PST     5.88 feet High Tide
Tue -- 03:48 PM PST     Moonrise
Tue -- 04:24 PM PST     0.37 feet Low Tide
Tue -- 04:54 PM PST     Sunset
Tue -- 10:43 PM PST     4.64 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.52.71.91.41.523455.75.95.44.53.21.90.90.40.511.933.94.54.6

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
Tue -- 02:16 AM PST     -1.74 knots Max Ebb
Tue -- 03:59 AM PST     Moonset
Tue -- 05:41 AM PST     0.00 knots Slack
Tue -- 06:55 AM PST     Sunrise
Tue -- 08:27 AM PST     1.51 knots Max Flood
Tue -- 11:26 AM PST     -0.01 knots Slack
Tue -- 02:41 PM PST     -2.48 knots Max Ebb
Tue -- 03:48 PM PST     Moonrise
Tue -- 04:54 PM PST     Sunset
Tue -- 06:30 PM PST     0.01 knots Slack
Tue -- 09:12 PM PST     1.61 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-1.3-1.7-1.6-1.2-0.50.211.51.51.10.4-0.6-1.7-2.3-2.4-2.1-1.4-0.50.51.31.61.51.1

Weather Map and Satellite Images
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GOES 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 (8,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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Disclaimer:
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 numerious 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.