Wednesday, January23, 2019 L-36.com


Marine Weather and Tides
Belvedere, 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 7:18AMSunset 5:24PM Wednesday January 23, 2019 2:31 PM PST (22:31 UTC) Moonrise 8:42PMMoonset 9:22AM 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- 216 Pm Pst Wed Jan 23 2019
Tonight..N winds around 5 kt.
Thu..NE winds 5 to 15 kt.
Thu night..NE winds 5 to 10 kt.
Fri..NE winds 5 to 15 kt with gusts up to 25 kt.
Fri night..NE winds up to 10 kt.
Sat..NE winds 5 to 15 kt.
Sat night..NE winds up to 10 kt.
Sun..N winds around 5 kt.
Mon..N winds 5 to 10 kt.
PZZ500 216 Pm Pst Wed Jan 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure over the eastern pacific will generate moderate to locally gusty northerly winds across the coastal waters through much of the week. A series of small to moderate northwest swells are forecast throughout the week.


7 Day Forecast for Marine Location Near Belvedere, CA
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location: 37.83, -122.44     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 232201
afdmtr
area forecast discussion
national weather service san francisco bay area
201 pm pst Wed jan 23 2019

Synopsis High pressure over the west coast will result in a
gradual warming trend through Saturday, along with mainly clear sky
conditions and cool overnights. The dry pattern is forecast to
persist through the remainder of the month.

Discussion As of 02:00 pm pst Wednesday... Mainly clear sky
conditions persist over the region this afternoon with
temperatures in the upper 50s to lower 60s. This trend is forecast
to persist into Thursday with slightly warmer daytime
temperatures as 850mb temperatures warm. Subtle warming will
continue into Friday and Saturday with more widespread middle 60s
to lower 70s as weak offshore flow develops. Overnight
temperatures will generally range from the upper 30s to middle 40s
each night. Widespread fog development is not likely, even in the
typically foggy valley locations given the dry air mass in place
and weak offshore winds.

The ridge is forecast to weaken slightly and shift back out over the
pacific by early next week which will allow for slightly cooler
daytime temperatures (more widespread 60s). Dry conditions are
likely region-wide through the end of the month with temperatures
near seasonal averages. The longer range operational models and
ensemble guidance hint at the potential for some light rain around
february 1st or 2nd. Until then, we will continue to monitor.

Aviation As of 9:18 am pst Wednesday... For 18z tafs. High
pressure will maintain mainly clear skies across area terminals
with the exception of a few high clouds. Generally light winds
will prevail through the forecast period.

Vicinity of ksfo...VFR conditions will prevail through the period
with only a few high clouds expected. Light to locally variable winds
will persist.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR conditions and light winds will
prevail through the period.

Marine As of 8:28 am pst Wednesday... High pressure over the
eastern pacific will generate moderate to locally gusty northerly
winds across the coastal waters through much of the week. A series
of small to moderate northwest swells are forecast throughout the
week.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt arena to pt reyes 0-10 nm until 9 pm
sca... Pt pinos to pt piedras blancas 0-10 nm
public forecast: rgass
aviation: sims
marine: sims
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FTPC1 - 9414290 - San Francisco, CA 2 mi43 min N 9.9 G 12 1028.6 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 3 mi43 min NW 8 G 12 54°F 1027.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 4 mi50 min NW 8 53°F 1029 hPa
OBXC1 6 mi43 min 59°F 45°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 6 mi43 min N 8 G 11 56°F 1028.2 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 6 mi43 min N 8.9 G 9.9
RCMC1 - 9414863 - Richmond, CA 7 mi43 min NNE 8.9 G 11 54°F1028.2 hPa
AAMC1 - 9414750 - Alameda, CA 8 mi43 min W 2.9 G 5.1 1028.5 hPa
LNDC1 9 mi43 min NNW 2.9 G 8 60°F 1028 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 18 mi43 min E 8 G 9.9 55°F 1028.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 22 mi43 min NE 5.1 G 6 53°F 52°F1029.1 hPa48°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 22 mi31 min NW 5.8 G 7.8 54°F 56°F1028.9 hPa (-2.4)
RTYC1 - 9414523 - Redwood City, CA 25 mi43 min NW 1.9 G 4.1 55°F 54°F1028.7 hPa
PCOC1 - 9415144 - Port Chicago, CA 26 mi43 min ENE 4.1 G 7 54°F 52°F1029 hPa
PRYC1 - 9415020 - Point Reyes, CA 31 mi43 min 55°F1028.3 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi43 min ESE 1.9 G 1.9 55°F 1028.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 34 mi106 min E 8 56°F 1030 hPa40°F

Wind History for San Francisco, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA15 mi2.6 hrsWNW 810.00 miA Few Clouds56°F44°F65%1030.3 hPa
San Francisco, San Francisco International Airport, CA15 mi2.6 hrsN 610.00 miPartly Cloudy57°F43°F60%1030.1 hPa
Hayward, Hayward Air Terminal, CA21 mi2.6 hrsWSW 610.00 miFair55°F43°F64%1030.9 hPa
Half Moon Bay Airport, CA22 mi1.9 hrsNNW 99.00 miFair59°F44°F59%1029.1 hPa
Concord, Buchanan Field, CA23 mi2.6 hrsN 710.00 miFair55°F41°F59%1029.4 hPa
San Carlos Airport, CA23 mi2.7 hrsNNE 410.00 miA Few Clouds52°F44°F77%1030.1 hPa
Novato / Gnoss Field, CA23 mi1.9 hrsESE 510.00 miFair57°F35°F44%1030.5 hPa

Wind History from SFO (wind in knots)
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Last 24hrE3E3NE3NW5W3CalmS3CalmW3CalmSW3S3CalmSW3CalmCalmS3CalmCalmCalmN7N6N8N7
1 day agoNE5CalmW12W14W9W9NW7W7W5CalmSE4S5N8NW6NW3CalmN8N6N5N6N4CalmCalmCalm
2 days agoW15
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W16W17W18W16W11W16
G22
W9NW5W7W8W8W15W12W13W16N6N8

Tide / Current Tables for Alcatraz Island, San Francisco Bay, California
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Alcatraz Island
Click for Map
Wed -- 01:53 AM PST     5.57 feet High Tide
Wed -- 06:53 AM PST     2.24 feet Low Tide
Wed -- 07:20 AM PST     Sunrise
Wed -- 09:20 AM PST     Moonset
Wed -- 12:55 PM PST     6.63 feet High Tide
Wed -- 05:23 PM PST     Sunset
Wed -- 07:33 PM PST     -0.98 feet Low Tide
Wed -- 08:42 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.45.35.65.24.33.22.52.22.63.44.55.56.36.66.253.31.5-0-0.9-0.9-0.30.82.2

Tide / Current Tables for Alcatraz Island W, San Francisco Bay, California Current
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Alcatraz Island W
Click for Map
Wed -- 03:10 AM PST     -0.01 knots Slack
Wed -- 05:26 AM PST     -1.85 knots Max Ebb
Wed -- 07:20 AM PST     Sunrise
Wed -- 08:21 AM PST     0.00 knots Slack
Wed -- 09:21 AM PST     Moonset
Wed -- 11:19 AM PST     2.60 knots Max Flood
Wed -- 02:27 PM PST     -0.00 knots Slack
Wed -- 05:23 PM PST     Sunset
Wed -- 05:39 PM PST     -3.20 knots Max Ebb
Wed -- 08:42 PM PST     Moonrise
Wed -- 09:10 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.52.91.80.3-1-1.8-1.7-1.2-0.40.81.92.62.51.80.6-0.7-2.1-3-3.1-2.5-1.5-0.21.42.7

Weather Map and Satellite Images
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wmap_P
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (17,4,5,8)
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Ground Weather Radar Station San Francisco Bay Area, 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.