Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Sunnyvale, 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 6:27AMSunset 7:53PM Sunday August 20, 2017 4:49 AM PDT (11:49 UTC) Moonrise 4:13AMMoonset 6:21PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 220 Am Pdt Sun Aug 20 2017
.small craft advisory in effect from 1 pm pdt this afternoon through this evening...
Today..SW winds 10 to 20 kt...increasing to 15 to 25 kt in the afternoon. Patchy fog in the morning.
Tonight..SW winds 15 to 25 kt. Patchy fog after midnight.
Mon..SW winds 10 to 20 kt. Patchy fog in the morning.
Mon night..SW winds 15 to 25 kt. Patchy fog after midnight.
Tue..SW winds 10 to 20 kt. Patchy fog in the morning.
Wed..SW winds 10 kt.
Thu..SW winds 10 kt.
PZZ500 220 Am Pdt Sun Aug 20 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate northwesterly winds will continue over the northern outer waters through tonight as high pressure continues to build over the eastern pacific. Accompanying breezy winds will be locally steep wind waves before winds begin to decrease tonight.

7 Day Forecast for Marine Location Near Sunnyvale, CA
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location: 37.42, -121.98     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 201128
afdmtr
area forecast discussion
national weather service san francisco bay area
428 am pdt Sun aug 20 2017

Synopsis Cooling will continue early this week as an upper
trough of low pressure becomes nearly stationary over the eastern
pacific. Coastal areas will see little in the way of change with
continued night and morning low clouds and patchy fog.

Discussion As of 3:00 am pdt Sunday... A nearly stationary
upper level closed low will remain along the central coast through
early to mid week. Cooler temperatures will continue this week
with comfortable day time highs expected most places with only far
inland locations experiencing warm to hot temperatures. Wildfire
smoke from the pacific northwest began to mix into the air over
the bay area and central coast yesterday. Widespread low clouds
and fog over the coastal waters will be ushered inland this
morning on onshore breezes with returning low clouds and fog again
tonight and Monday morning. Cloud coverage mid-late Monday
morning will be challenging to predict much of it depending upon
the depth and strength of the marine layer, though of course, the
farther inland one is the better chances there are for clear skies
during the solar eclipse. Patchy high clouds are possible over
the area Monday as well. Medium range forecasts indicate some
strengthening of an upper level high over the desert southwest
and california.

Aviation As of 04:30 am pdt Sunday... For 12z tafs. MVFR to ifr
conditions at most airports as stratus continues to spread inland.

Expecting stratus to burn off late this morning. Westerly winds
this afternoon at around 15 kt.

Vicinity of ksfo... MVFR CIGS currently around the airport
expected to burn off late this morning around 18-19z.VFR
conditions this afternoon with westerly winds around 15 kt.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals... Ifr CIGS at kmry and ksns. Expecting MVFR
toVFR conditions around 18-19z. Low CIGS should return again this
evening.

Marine As of 02:20 am pdt Sunday... Moderate northwesterly
winds will continue over the northern outer waters through tonight
as high pressure continues to build over the eastern pacific.

Accompanying breezy winds will be locally steep wind waves before
winds begin to decrease tonight.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt pinos to pt piedras blancas 0-10 nm from 11 am
sca... Sf bay from 1 pm
public forecast: canepa
aviation: as
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 14 mi49 min WNW 2.9 G 4.1 63°F 73°F1010.6 hPa (-0.5)
LNDC1 30 mi49 min W 4.1 G 6 62°F 1011.2 hPa (-0.6)
AAMC1 - 9414750 - Alameda, CA 30 mi49 min W 4.1 G 7 61°F 68°F1011.7 hPa (-0.6)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 32 mi49 min WSW 8.9 G 11
OKXC1 - 9414776 - Oakland (Berth 34), CA 33 mi49 min WSW 7 G 8.9 61°F 1011.2 hPa (-0.6)
OBXC1 33 mi49 min 61°F 58°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 34 mi49 min W 6 G 9.9 60°F 1010.2 hPa
PXSC1 34 mi49 min 61°F 58°F
FTPC1 - 9414290 - San Francisco, CA 37 mi49 min WSW 8 G 12 59°F 60°F1011.7 hPa (-0.6)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 39 mi49 min SW 14 G 17 61°F 1011.3 hPa (-0.6)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 41 mi57 min ESE 7 59°F 1011 hPa (-1.0)
RCMC1 - 9414863 - Richmond, CA 42 mi49 min SSW 11 G 14 61°F 64°F1011.1 hPa (-0.6)
MZXC1 - 9415102 - Martinez-Amorco CA 43 mi49 min W 9.9 G 13 61°F 68°F1011.1 hPa (-0.6)59°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 43 mi49 min WNW 16 G 22 63°F 1009.4 hPa (-0.5)
46237 - San Francisco Bar, CA (142) 43 mi49 min 60°F5 ft
PCOC1 - 9415144 - Port Chicago, CA 44 mi49 min WSW 14 G 18 61°F 69°F1010.6 hPa (-0.3)
ELXC1 - Elkhorn Slough Reserve, CA 44 mi64 min WNW 4.1 61°F 1011 hPa58°F
46092 - MBM1 46 mi107 min SSE 3.9 60°F 60°F1012.2 hPa (-0.7)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 46 mi49 min W 9.9 G 14 61°F 1010.8 hPa (-0.5)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 48 mi59 min S 5.8 G 9.7 59°F 62°F8 ft1011.2 hPa (-0.9)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 49 mi59 min NNW 1.9 G 3.9 59°F 61°F6 ft1012.1 hPa (-0.7)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA4 mi1.9 hrsSE 410.00 miFair62°F57°F84%1011.6 hPa
San Jose, San Jose International Airport, CA4 mi56 minSE 910.00 miFair62°F57°F84%1011 hPa
San Carlos Airport, CA16 mi59 minWNW 410.00 miOvercast63°F55°F77%1011.5 hPa
Hayward, Hayward Air Terminal, CA18 mi55 minW 510.00 miOvercast64°F55°F73%1011.9 hPa
Livermore, Livermore Municipal Airport, CA21 mi56 minWNW 310.00 miA Few Clouds60°F57°F90%1010.4 hPa
Oakland, Metro Oakland International Airport, CA23 mi56 minWNW 610.00 miOvercast62°F57°F86%1011.2 hPa
San Francisco, San Francisco International Airport, CA24 mi1.9 hrsSW 510.00 miA Few Clouds62°F52°F70%1011.3 hPa

Wind History from SJC (wind in knots)
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Last 24hrSE5SE4SE6E8SE4E5S436W9W10NW11NW11NW10NW8NW8NW7NW3CalmSE7SE9SE12SE12SE9
1 day agoNW4CalmCalmCalmNE4W5CalmCalmNW7NW9W10W10NW10W11W9W6W7NW6NW6NW5NW4CalmCalmE4
2 days agoSE6SE5SE6SE5CalmCalmCalm4NW8NW7NW10W10NW11NW11W11W7W7W6NW7W5NW5NW4NW4NW5

Tide / Current Tables for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
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Gold Street Bridge
Click for Map
Sun -- 05:13 AM PDT     Moonrise
Sun -- 06:28 AM PDT     Sunrise
Sun -- 07:22 AM PDT     -0.72 feet Low Tide
Sun -- 01:07 PM PDT     9.00 feet High Tide
Sun -- 07:19 PM PDT     1.97 feet Low Tide
Sun -- 07:21 PM PDT     Moonset
Sun -- 07:53 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.210.28.56.23.71.60-0.7-0.41.13.35.8898.67.55.842.722.44.37.19.7

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Sun -- 04:32 AM PDT     -1.57 knots Max Ebb
Sun -- 05:13 AM PDT     Moonrise
Sun -- 06:28 AM PDT     Sunrise
Sun -- 07:14 AM PDT     0.00 knots Slack
Sun -- 10:03 AM PDT     1.73 knots Max Flood
Sun -- 01:14 PM PDT     -0.01 knots Slack
Sun -- 05:10 PM PDT     -0.91 knots Max Ebb
Sun -- 07:14 PM PDT     0.01 knots Slack
Sun -- 07:21 PM PDT     Moonset
Sun -- 07:53 PM PDT     Sunset
Sun -- 09:50 PM PDT     1.41 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.6-1-1.4-1.5-1.5-1.1-0.20.81.51.71.610.2-0.3-0.6-0.8-0.9-0.8-0.20.61.21.41.2

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 (7,2,3,4)
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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.