Thursday, January24, 2019 L-36.com


Marine Weather and Tides
Belmont, 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 7:16AMSunset 5:25PM Thursday January 24, 2019 3:20 AM PST (11:20 UTC) Moonrise 9:52PMMoonset 9:58AM Illumination 87% 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 San Francisco Bay North Of The Bay Bridge- 243 Am Pst Thu Jan 24 2019
Today..NE winds 5 to 15 kt.
Tonight..NE winds 5 to 15 kt.
Fri..NE winds 5 to 15 kt.
Fri night..E winds 5 to 15 kt.
Sat..NE winds 5 to 15 kt.
Sun..NE winds 10 kt...becoming nw.
Mon..N winds 10 kt.
PZZ500 243 Am Pst Thu Jan 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure centered over the eastern pacific will maintain moderate to locally gusty northerly winds across the coastal waters north of pigeon point through late tonight. Winds will decrease by Friday as the high ridges across the pacific northwest and fills in over the great basin. Small northwest swells with 15 second periods will continue to impact the waters through the forecast period.


7 Day Forecast for Marine Location Near Belmont, CA
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location: 37.52, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 241119
afdmtr
area forecast discussion
national weather service san francisco bay area
319 am pst Thu jan 24 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 3:15 am pst Thursday... The large scale
weather feature dominating the region has not changed much over
the last 24 hours - upper level high pressure remains off the west
coast and a deep trough digs east of the rockies. However, subtle
changes at the surface has changed sensible weather overnight.

The latest 24 hour trends indicates a slight uptick in dew points,
which is leading to slightly warmer temperatures this morning.

Temperatures are still on the chilly side though - upper 30s and
40s. Additionally, the increased low level moisture and light
winds resulted in patchy fog. Therefore, patchy fog has been added
to the forecast this morning. Lastly, there still could be some
patchy frost in the interior protected valleys.

The general forecast thinking through the upcoming weekend hasn't
changed much. The upper level ridge will continue to strengthen
and eventually move inland this weekend. A weak shortwave trough
will ride on the northern periphery later today and Friday
resulting in offshore flow at the surface. Building high pressure
and offshore flow will continue the gradual warming trend. Highs
will peak Friday and Saturday in the 60s to lower 70s, which is
five to ten degrees above normal for this time of year. Overnight
lows will remain cool and in the 30s and 40s. It should be noted
though, the passing shortwave trough will also result in breezy
conditions over the higher terrain of the north and east bay.

Conditions will begin to moderate late in the weekend and into
early next week as the ridge weakens and shifts westward. Simply
put, dry conditions through the end of the month. Operational runs
of the GFS and canadian models still shows a pattern shift early
february with some precip moving into the bay area. The ecmwf
also shows a pattern change, but less in the way of precip.

Ensemble guidance however is a little more optimistic with precip
chances the first week of february. Stay tuned!
one final addition - if you're a weather nut watch the weather
over the mid west the next week or two. Two solid pushes of arctic
air will cause temperatures and wind chills to plummet. The
overall anomalies with these airmasses are off the chart and will
be the coldest season.

Aviation As of 10:00 pm pst Wednesday... Hi-res models show mid
and high clouds over the area tonight but no inversion layer. As
a resultVFR conditions will prevail.

Vicinity of ksfo...VFR.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR.

Marine As of 09:56 pm pst Wednesday... A 1033 mb high is
centered 460 miles west of point arena. This is causing stronger
northerly winds over the northern waters. Winds will decrease by
Friday as another high moves into the great basin. A small
northwest swells with longer period will impact the waters through
the week.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm
public forecast: mm
aviation: W pi
marine: W pi
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 4 mi33 min SW 1.9 G 4.1 47°F 55°F1025.6 hPa
AAMC1 - 9414750 - Alameda, CA 17 mi39 min NNW 1.9 G 2.9 50°F 54°F1025.5 hPa
LNDC1 19 mi33 min Calm G 1.9 49°F 1025 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 20 mi33 min Calm G 1 51°F 1024.2 hPa
OBXC1 20 mi33 min 50°F 47°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 20 mi33 min N 5.1 G 5.1 50°F 1025.2 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 20 mi33 min N 4.1 G 4.1
PXSC1 21 mi33 min 51°F 47°F
FTPC1 - 9414290 - San Francisco, CA 22 mi39 min SSE 2.9 G 4.1 49°F 55°F1025.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi40 min WNW 1.9 49°F 1025 hPa
RCMC1 - 9414863 - Richmond, CA 29 mi33 min 54°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 34 mi21 min NW 7.8 G 12 54°F 55°F1025.5 hPa (-0.9)
MZXC1 - 9415102 - Martinez-Amorco CA 37 mi33 min SSW 1 G 1.9 45°F 52°F1025.3 hPa45°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi33 min Calm G 1 47°F 1025.1 hPa
PCOC1 - 9415144 - Port Chicago, CA 39 mi33 min S 8 G 9.9 45°F 51°F1025.3 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 42 mi33 min ESE 2.9 G 4.1 48°F 1025.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 49 mi33 min 55°F1024.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 49 mi96 min Calm 41°F 1025 hPa40°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Carlos Airport, CA2 mi26 minN 010.00 miFair45°F39°F81%1025.4 hPa
San Francisco, San Francisco International Airport, CA8 mi25 minSSW 410.00 miA Few Clouds47°F37°F69%1024.9 hPa
Hayward, Hayward Air Terminal, CA13 mi27 minENE 310.00 miFair46°F36°F68%1025.9 hPa
Oakland, Metro Oakland International Airport, CA13 mi28 minN 010.00 miFair43°F39°F86%1025.4 hPa
Mountain View, Moffett Field, CA14 mi85 minN 010.00 miFair46°F39°F77%1025.8 hPa
San Jose, San Jose International Airport, CA21 mi28 minSE 310.00 miFair40°F37°F89%1025.1 hPa

Wind History from SQL (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmNE4N6CalmW4NW4NW5NW3Calm3CalmNW3CalmCalmCalmCalmCalmCalm
1 day agoCalmW3W3Calm3W3NW3N5W3Calm3CalmCalmCalmCalmCalmCalmCalmCalmCalmNW3SE5CalmCalm
2 days agoW4W6W5W5W7NW11
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NW10N7N7N6NW7W6W8W6W5W5NW4NW5NW4SE4CalmW3NW5

Tide / Current Tables for Smith Slough, San Francisco Bay, California
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Smith Slough
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Thu -- 03:38 AM PST     7.81 feet High Tide
Thu -- 07:18 AM PST     Sunrise
Thu -- 09:33 AM PST     2.07 feet Low Tide
Thu -- 09:57 AM PST     Moonset
Thu -- 02:52 PM PST     8.18 feet High Tide
Thu -- 05:24 PM PST     Sunset
Thu -- 09:52 PM PST     Moonrise
Thu -- 10:00 PM PST     -0.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.54.56.47.67.775.74.22.92.22.23.14.76.47.78.27.76.54.82.81.1-0-0.40.1

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Thu -- 12:26 AM PST     2.12 knots Max Flood
Thu -- 04:06 AM PST     -0.01 knots Slack
Thu -- 06:53 AM PST     -1.29 knots Max Ebb
Thu -- 07:18 AM PST     Sunrise
Thu -- 09:48 AM PST     0.01 knots Slack
Thu -- 09:57 AM PST     Moonset
Thu -- 12:26 PM PST     1.53 knots Max Flood
Thu -- 03:38 PM PST     -0.00 knots Slack
Thu -- 05:23 PM PST     Sunset
Thu -- 07:06 PM PST     -1.88 knots Max Ebb
Thu -- 09:52 PM PST     Moonrise
Thu -- 10:24 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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2.12.11.710.1-0.6-1.1-1.3-1-0.50.211.51.51.10.5-0.3-1-1.6-1.9-1.7-1.1-0.40.6

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (6,6,7,8)
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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.