Monday, December10, 2018 L-36.com


Marine Weather and Tides
San Lorenzo, 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 7:12AMSunset 4:51PM Monday December 10, 2018 4:16 PM PST (00:16 UTC) Moonrise 9:57AMMoonset 8:01PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 239 Pm Pst Mon Dec 10 2018
Tonight..N winds 5 to 10 kt.
Tue..N winds up to 10 kt.
Tue night..NW winds 5 to 15 kt.
Wed..NW winds 5 to 15 kt.
Wed night..SE winds 5 to 15 kt.
Thu..N winds up to 10 kt.
Thu night..E winds 5 to 10 kt.
Fri..SW winds up to 10 kt. A chance of rain.
Sat..SE winds 5 to 10 kt. A chance of rain.
PZZ500 239 Pm Pst Mon Dec 10 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... North to northwest winds will develop and increase over the coastal waters through tonight in wake of a frontal passage. Wind speeds will then diminish briefly late Tuesday before increasing again to moderate levels on Wednesday. A moderate northwest swell will also impact the region through tonight before a larger swell arrives late in the week.


7 Day Forecast for Marine Location Near San Lorenzo, CA
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location: 37.65, -122.22     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 102327
afdmtr
area forecast discussion
national weather service san francisco bay area
327 pm pst Mon dec 10 2018

Synopsis A weak front will slowly dissipate over the bay area
this afternoon ending any shower activity. Another weak system
may bring a few showers to our northern areas late Tuesday night
into early Wednesday. However, most areas will remain dry and cool
through Thursday. A better chance of widespread rain will develop
late in the work week and for the weekend.

Discussion As of 01:57 pm pst Monday... In the near term a cold
front continues to wash out over the bay area. Latest kmux radar
imagery also indicates shower activity has all but ended. There
were a few showers over the last hour or two in the east bay
hills, but even those have dissipated or moved east of the
forecast area. In the wake of the dissipating cold front clouds
will continue to thin clear with some afternoon sunshine.

Given the ample low level moisture and gradual clearing decided to
add some patchy fog tonight for the north bay valleys. It's
possible some patchy fog could also develop in the east bay
valleys.

For Tuesday - a shortwave upper level ridge will briefly pass over
the region before another system approaches from the north.

Temperatures will be similar to today with highs in the 50s to mid
60s, which is close to normal for december.

Another weak system may bring rain into the bay area Tuesday into
Wednesday, but falls apart as it runs into the ridge. Models have
been trending drying over the last few days and see no reason to
change current forecast. Will continue the slight chance far
northern area of the north bay.

High pressure returns on Wednesday and Thursday with a slight warm
up.

A decent low pressure system is still on track to move into the
pac NW Friday and drag a cold front through ca. This system seems
a little better than today's front, but by no means a real soaker.

The heaviest precip will be focused north of the golden gate and
dissipate as the front moves southward during the day Friday.

Farther down the road a wet system looks to impact the region late
next week. Surprisingly the medium long range models are in
decent agreement with a system moving through. Taking a looks at
potential - atmospheric river guidance puts ivt values in the
moderate category. Obviously it's still several days out, but
something to keep an eye one. Regardless, it's nice to see that
the overall pattern will remain somewhat active during the next
seven days.

Aviation As of 03:27 pm pst Monday... For 00z tafs. Sky
conditions have mostly cleared out over the region in wake of a
weak frontal passage earlier in the day. Lingering few sct clouds
at around 5-7kft persist withVFR conditions region-wide. The
forecast becomes a bit more challenging overnight as there is the
possibility of lowing visibility and development of low clouds
over portions of the region, mainly north bay and east bay valley
terminals. However, forecast confidence is low that these
conditions will develop given the drier air that has filtered into
the region this afternoon. Generally light winds are forecast to
prevail.

Vicinity of ksfo...VFR conditions likely to persist through the
evening. Few sct low clouds will be possible over the terminal
early Tuesday morning, yet confidence is low for a cloud deck to
form. Winds will remain light.

Sfo bridge approach...VFR conditions through the evening. Low
cloud development will be possible over the approach and south bay
which may even result in MVFR or worse conditions early Tuesday
morning. Low confidence
monterey bay terminals...VFR conditions forecast to prevail
through the period. Generally light onshore winds, locally
stronger at ksns, will persist this afternoon and diminish during
the overnight. Few sct clouds may develop early Tuesday morning,
yet widespread low cloud deck appears less likely. Moderate
confidence.

Marine As of 03:27 pm pst Monday... North to northwest winds
will develop and increase over the coastal waters through tonight
in wake of a frontal passage. Wind speeds will then diminish
briefly late Tuesday before increasing again to moderate levels on
Wednesday. A moderate northwest swell will also impact the region
through tonight before a larger swell arrives late in the week.

Mtr watches warnings advisories
Tday Sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Rough bar advisory for sf bar
public forecast: mm
aviation: rgass
marine: rgass
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 9 mi35 min WNW 5.1 G 7 56°F 55°F1021.7 hPa
RTYC1 - 9414523 - Redwood City, CA 10 mi29 min NW 8 G 9.9 55°F 56°F1021.9 hPa
LNDC1 11 mi29 min NNW 5.1 G 7 56°F 1021.2 hPa
OBXC1 12 mi29 min 56°F 51°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 12 mi35 min NW 7 G 11
OKXC1 - 9414776 - Oakland (Berth 34), CA 13 mi29 min NNW 7 G 8.9 55°F 1021.4 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 14 mi29 min W 4.1 G 6 56°F 1020.4 hPa
PXSC1 14 mi35 min 57°F 50°F
FTPC1 - 9414290 - San Francisco, CA 17 mi35 min W 5.1 G 6 55°F 56°F1021.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 19 mi29 min NNE 1.9 G 5.1 58°F 1021.8 hPa
RCMC1 - 9414863 - Richmond, CA 21 mi29 min 56°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 21 mi36 min WSW 1.9 53°F 1022 hPa
46237 - San Francisco Bar, CA (142) 24 mi47 min 56°F8 ft
MZXC1 - 9415102 - Martinez-Amorco CA 27 mi35 min WNW 8 G 8.9 55°F 54°F1021.4 hPa55°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 28 mi29 min NW 4.1 G 5.1 56°F 1021.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 30 mi29 min W 7 G 8 56°F 54°F1021.3 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 32 mi29 min NW 4.1 G 6 57°F 1021 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 34 mi27 min NNW 9.7 G 14 56°F 57°F9 ft1022.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 39 mi92 min W 5.1 58°F 1021 hPa47°F
PRYC1 - 9415020 - Point Reyes, CA 47 mi35 min WNW 4.1 G 4.1 57°F1021.5 hPa

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA3 mi24 minWNW 87.00 miA Few Clouds56°F48°F77%1021.4 hPa
Hayward, Hayward Air Terminal, CA5 mi23 minWNW 76.00 miFair with Haze56°F46°F72%1022.2 hPa
San Francisco, San Francisco International Airport, CA8 mi81 minNW 410.00 miA Few Clouds56°F46°F70%1021.3 hPa
San Carlos Airport, CA8 mi29 minNW 58.00 miA Few Clouds57°F46°F67%1021.7 hPa
Palo Alto Airport, CA13 mi30 minNW 88.00 miPartly Cloudy57°F48°F72%1021.7 hPa
Mountain View, Moffett Field, CA18 mi81 minN 09.00 miFair57°F46°F69%1021.5 hPa
Half Moon Bay Airport, CA18 mi22 minNNW 87.00 miA Few Clouds55°F48°F77%1021.7 hPa
Livermore, Livermore Municipal Airport, CA21 mi24 minS 47.00 miFair55°F45°F69%1020.9 hPa

Wind History from OAK (wind in knots)
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Last 24hrE9E4E5E6E6E4NE5NE4CalmE3E3E3E4E3CalmSW3CalmSE4W3SW3W6W7NW7NW8
1 day agoNE5E7E5E6CalmCalmCalmSW3NE3NE4CalmCalmE4NE4CalmCalmCalmNE3SW5W6NW7NE4E3W5
2 days agoNW5NW4N3CalmCalmNE3N3CalmCalmCalmCalmSE4CalmN4CalmCalmE5SE5S6SW6W6W53NE6

Tide / Current Tables for San Mateo Bridge (east end), San Francisco Bay, California
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San Mateo Bridge (east end)
Click for Map
Mon -- 03:07 AM PST     6.55 feet High Tide
Mon -- 07:12 AM PST     Sunrise
Mon -- 08:10 AM PST     3.16 feet Low Tide
Mon -- 09:56 AM PST     Moonrise
Mon -- 01:23 PM PST     7.42 feet High Tide
Mon -- 04:50 PM PST     Sunset
Mon -- 08:01 PM PST     Moonset
Mon -- 08:46 PM PST     -0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.75.16.16.56.35.54.43.63.23.44.35.46.67.37.36.75.43.82.10.7-0.2-0.30.21.4

Tide / Current Tables for Little Coyote Pt 3.4 mi NNE, South San Francisco Bay, California Current
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Little Coyote Pt 3.4 mi NNE
Click for Map
Mon -- 02:38 AM PST     -0.00 knots Slack
Mon -- 05:02 AM PST     -0.39 knots Max Ebb
Mon -- 07:13 AM PST     Sunrise
Mon -- 08:03 AM PST     0.00 knots Slack
Mon -- 09:56 AM PST     Moonrise
Mon -- 10:42 AM PST     0.40 knots Max Flood
Mon -- 01:22 PM PST     -0.00 knots Slack
Mon -- 04:50 PM PST     Sunset
Mon -- 05:06 PM PST     -0.85 knots Max Ebb
Mon -- 08:01 PM PST     Moonset
Mon -- 08:49 PM PST     0.00 knots Slack
Mon -- 11:53 PM PST     0.64 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.50.2-0.1-0.3-0.4-0.3-0.2-00.20.40.40.30.1-0.2-0.5-0.7-0.8-0.8-0.5-0.30.10.40.6

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 (19,4,5,8)
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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.