Monday, December11, 2017 L-36.com


Marine Weather and Tides
San Lorenzo, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:12AMSunset 4:51PM Monday December 11, 2017 1:14 AM PST (09:14 UTC) Moonrise 12:54AMMoonset 1:25PM Illumination 46% Phase: Third Quarter Moon; Moon at 23 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- 853 Pm Pst Sun Dec 10 2017
Tonight..E winds 5 to 15 kt.
Mon..NE winds 5 to 15 kt.
Mon night..NE winds 10 kt.
Tue..NE winds 10 kt.
Tue night..W winds 10 kt.
Wed..Light winds...becoming nw 5 kt.
Thu..NE winds 5 kt.
Fri..W winds 5 kt.
PZZ500 853 Pm Pst Sun Dec 10 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A strong stationary high pressure ridge over the west coast will keep winds over the bays and ocean relatively light through the first half of the upcoming week. A longer period west to northwest swell will arrive overnight tonight and will continue through the day on Monday.

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 110553
afdmtr
area forecast discussion
national weather service san francisco bay area
953 pm pst Sun dec 10 2017

Synopsis High pressure will remain over the west through most
of next week resulting in continued dry conditions. Daytime highs
will be warmer than normal and nights will be seasonably cool.

Discussion As of 9:00 pm pst Sunday... Upper level high is over
northern nevada this evening. Strong 1045 mb surface high
pressure over the great basin continues to dominate bringing dry
offshore flow to the area. This brought record high temperatures
around the south bay and coastal areas today with records set at
san jose... Salinas... And half moon bay and tied at monterey.

Nights will continue to be cool especially in the valleys where
patchy fog may form in wind-protected areas.

The upper high will get pushed slightly southeast as a weak upper
level shortwave approaches the british columbia coast but will
keep its hold over our district through much of the coming week.

The surface high will slowly weaken over the next couple of days
but pressure gradients will still be offshore until Tuesday when
pressures between the coastal waters and inland areas equalize. By
then we should start to get a light seabreeze going. Daytime
temperatures are not going to change much this week with the
upper high still around. But nighttime temperatures will start to
moderate and there should be a little more humidity after
Tuesday.

Medium range models are indicating the ridge will flatten late in
the week as a weather system moves into the pacific northwest but
rain will remain well north of the district. In fact by next
weekend high pressure rebuilds off the coast and surface high
pressure builds into oregon bringing another round of offshore
flow.

Beyond that the 12z run of the ECMWF seems to be coming into
better agreement with the GFS in showing the ridge amplifying over
alaska by the 20th and a trough moving in to take its place over
the west coast with maybe even some precipitation for northern
california.

Aviation As of 9:49 pm pst Sunday for 06z tafs. Strong high
pressure will dominate the bay area through the forecast period,
resulting inVFR conditions and light winds. Went ahead and
removed fog from ksts taf. Forecast models are in fair agreement
that the boundary layer will be too dry to support fog from
forming tonight, but will still need to be monitored through the
night, just in case. Generally light offshore winds expected
overnight across the district.

High confidence.

Vicinity of ksfo...VFR. Light offshore winds expected through the
forecast period.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR. Generally light offshore winds
overnight, with occasional moderate east southeast winds through
the morning Monday, especially through the salinas valley.

Marine As of 9:31 pm pst Sunday... A strong stationary high
pressure ridge over the west coast will keep winds over the bays
and ocean relatively light through the first half of the upcoming
week. A longer period west to northwest swell will arrive
overnight tonight and will continue through the day on Monday.

Mtr watches warnings advisories
Tngt None.

Public forecast: W pi
aviation: bam
marine: bam
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 9 mi44 min SSW 2.9 G 5.1 54°F 55°F1024.2 hPa
RTYC1 - 9414523 - Redwood City, CA 10 mi44 min W 1.9 G 1.9 48°F 54°F1024.5 hPa
LNDC1 11 mi50 min SE 1.9 G 2.9 52°F 1024 hPa
OBXC1 12 mi68 min 55°F 48°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 12 mi44 min W 4.1 G 5.1
OKXC1 - 9414776 - Oakland (Berth 34), CA 13 mi44 min W 2.9 G 4.1 54°F 1024.1 hPa
PXSC1 14 mi44 min 56°F 47°F
FTPC1 - 9414290 - San Francisco, CA 17 mi44 min N 12 G 14 58°F 54°F1024 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 19 mi44 min N 8 G 11 56°F 1024.2 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 21 mi40 min WNW 7 54°F 1024 hPa
RCMC1 - 9414863 - Richmond, CA 21 mi44 min NW 9.9 G 12 53°F 54°F1023.9 hPa
46237 - San Francisco Bar, CA (142) 24 mi44 min 54°F4 ft
MZXC1 - 9415102 - Martinez-Amorco CA 27 mi44 min SE 2.9 G 2.9 46°F 53°F1025.1 hPa46°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 28 mi44 min E 13 G 15 52°F 1024 hPa
PCOC1 - 9415144 - Port Chicago, CA 30 mi44 min S 1.9 G 2.9 45°F 53°F1024.9 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 32 mi44 min SE 5.1 G 7 46°F 1025 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 34 mi84 min E 16 G 19 58°F 55°F5 ft1022.5 hPa (+0.4)
SFXC1 - San Francisco Bay Reserve, CA 39 mi89 min N 1.9 36°F 1025 hPa34°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 40 mi84 min ENE 7.8 G 9.7 58°F 56°F5 ft1021.9 hPa (+0.5)
PRYC1 - 9415020 - Point Reyes, CA 47 mi44 min WNW 2.9 G 5.1 55°F1022.2 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 mi21 minN 010.00 miFair46°F39°F77%1024.1 hPa
Hayward, Hayward Air Terminal, CA5 mi20 minESE 310.00 miFair47°F30°F54%1025 hPa
San Francisco, San Francisco International Airport, CA8 mi18 minS 310.00 miA Few Clouds48°F36°F63%1024.1 hPa
San Carlos Airport, CA8 mi19 minN 010.00 miFair45°F35°F71%1024.4 hPa
Palo Alto Airport, CA13 mi4.5 hrsN 010.00 miClear45°F39°F81%1023.4 hPa
Mountain View, Moffett Field, CA18 mi18 minN 010.00 miFair43°F36°F76%1024.6 hPa
Half Moon Bay Airport, CA18 mi19 minNE 310.00 miFair61°F23°F23%1021.3 hPa
Livermore, Livermore Municipal Airport, CA21 mi21 minN 010.00 miFair37°F32°F82%1024.8 hPa

Wind History from OAK (wind in knots)
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Last 24hrNE3CalmSE3SE4E3SE6SE5SE5S6SW5S4SW5W5W3W3CalmE6E4E7SE8E6CalmCalmCalm
1 day agoCalmCalmCalmNE4NE3SE7NE3CalmCalmS5W4SW4SW4SW3NE6E7E7E8SE5E7E3E3NE3Calm
2 days agoNE3CalmCalmSE3CalmE3CalmCalmSW3SW4W3W3S5SW3NE7E6E6E4CalmCalmCalmCalmNE3Calm

Tide / Current Tables for San Leandro Marina, San Francisco Bay, California
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San Leandro Marina
Click for Map
Mon -- 12:50 AM PST     0.69 feet Low Tide
Mon -- 12:54 AM PST     Moonrise
Mon -- 07:14 AM PST     Sunrise
Mon -- 07:31 AM PST     7.47 feet High Tide
Mon -- 01:24 PM PST     Moonset
Mon -- 02:12 PM PST     1.52 feet Low Tide
Mon -- 04:50 PM PST     Sunset
Mon -- 07:37 PM PST     5.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.71.22.23.65.26.57.47.46.75.54.12.81.91.51.72.53.64.75.45.554.13

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 -- 12:39 AM PST     0.00 knots Slack
Mon -- 12:54 AM PST     Moonrise
Mon -- 03:51 AM PST     0.67 knots Max Flood
Mon -- 06:54 AM PST     -0.00 knots Slack
Mon -- 07:14 AM PST     Sunrise
Mon -- 10:13 AM PST     -0.63 knots Max Ebb
Mon -- 01:24 PM PST     Moonset
Mon -- 01:39 PM PST     0.00 knots Slack
Mon -- 04:32 PM PST     0.50 knots Max Flood
Mon -- 04:50 PM PST     Sunset
Mon -- 07:12 PM PST     -0.00 knots Slack
Mon -- 10:16 PM PST     -0.56 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.20.10.40.60.70.60.3-0-0.4-0.6-0.6-0.6-0.5-0.20.10.40.50.50.40.1-0.2-0.5-0.6-0.5

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (4,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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weather_mapweather_map weather_map

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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.