Monday, June26, 2017 L-36.com


Marine Weather and Tides
Castro Valley, 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 5:47AMSunset 8:35PM Monday June 26, 2017 5:25 AM PDT (12:25 UTC) Moonrise 7:48AMMoonset 9:57PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 228 Am Pdt Mon Jun 26 2017
Today..W winds 5 to 15 kt. Patchy fog in the morning.
Tonight..W winds 10 to 20 kt...decreasing to 10 kt after midnight. Patchy fog after midnight.
Tue..W winds 10 kt...increasing to 10 to 20 kt in the afternoon. Patchy fog in the morning.
Tue night..W winds 10 to 20 kt. Patchy fog after midnight.
Wed..W winds 10 to 20 kt. Patchy fog in the morning. Patchy fog after midnight.
Thu..SW winds 10 kt. Patchy fog.
Fri..SW winds 10 kt. Patchy fog.
PZZ500 228 Am Pdt Mon Jun 26 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light to moderate northerly winds will persist over the coastal waters as high pressure remains over the eastern pacific. Locally stronger winds will be possible along the immediate coast and in san francisco bay. A dominant southerly swell will persist into Wednesday morning.

7 Day Forecast for Marine Location Near Castro Valley, CA
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location: 37.71, -122.07     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 261114
afdmtr
area forecast discussion
national weather service san francisco bay area
414 am pdt Mon jun 26 2017

Synopsis Pronounced onshore flow today will lead to cooler
conditions today and Tuesday compared to Sunday. Modest warming
is expected during the second half of the week, however highs will
fall well short of the recent heatwave.

Discussion As of 3:00 am pdt Monday... Clouds mostly cleared
from our CWA later yesterday but satellite shows that they have
returned to san mateo county northward. Clouds are continuing to
stream to the southeast and will be down into monterey county
by sunrise. Patchy fog and drizzle can be expected into the
morning.

Synoptically the ridge of high pressure that had been overhead is
now well to the east while the onshore flow combined with a
moderate marine layer will lead to cooler conditions compared to
yesterday especially for spots away from the coast. Highs will
range from 60s near the water with mostly 70s to mid 80s inland.

In general, temperatures will be 3 to 6 degrees cooler compared to
Sunday. Similar conditions can be expected tonight into Tuesday.

By Wednesday a ridge of high pressure will rebuild into the
pacific and toward our region. This will lead to slight warming
into Thursday. Inland highs will return to the upper 70s to lower
90s with coastal spots in the 60s to the mid 70s. Those
temperatures will hold into early next week and possibly into the
following week.

Aviation As of 04:10 am pdt Monday... A non-typical marine
layer developed overnight and is impacting most terminals, but not
quiet yet at kmry ksns. CIGS are mostly above 1k ft. Will have
mid to later morning burn off. Conf is rather low on stratus
impacting kmry ksns.VFR this afternoon. CIGS return this
evening overnight.

Vicinity of ksfo... MVFR CIGS around sfo this morning. Based on
timing of yesterday and model guidance today will keep the 18z
clearing. Conf is low to moderate.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR as of now, but will keep stratus
tracking toward kmry with a toa around 13z. If CIGS develop will
keep CIGS for a brief time through 16-17z.VFR this afternoon.

Cigs return tonight.

Marine As of 04:09 am pdt Monday... Light to moderate northerly
winds will persist over the coastal waters as high pressure
remains over the eastern pacific. Locally stronger winds will be
possible along the immediate coast and in san francisco bay. A
dominant southerly swell will persist into Wednesday morning.

Mtr watches warnings advisories
Tday Sca... Sf bay from 1 pm
sca... Mry bay from 1 pm
sca... Pigeon pt to pt pinos 0-10 nm from 1 pm
sca... Pt pinos to pt piedras blancas 0-10 nm
public forecast: bell
aviation: mm
marine: mm
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Weather Reporting Stations
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Wind History for Alameda, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hayward, Hayward Air Terminal, CA4 mi31 minN 010.00 miOvercast62°F52°F70%1017.2 hPa
Oakland, Metro Oakland International Airport, CA8 mi32 minW 810.00 miOvercast63°F55°F76%1016.4 hPa
Livermore, Livermore Municipal Airport, CA13 mi32 minW 910.00 miOvercast58°F53°F84%1015.6 hPa
San Carlos Airport, CA16 mi30 minN 010.00 miOvercast59°F53°F82%1016.6 hPa
San Francisco, San Francisco International Airport, CA17 mi29 minW 510.00 miMostly Cloudy60°F53°F78%1016.3 hPa
Concord, Buchanan Field, CA19 mi32 minWSW 1210.00 miOvercast61°F54°F78%1014.3 hPa
Mountain View, Moffett Field, CA19 mi89 minNW 710.00 miOvercast60°F54°F80%1017 hPa

Wind History from HWD (wind in knots)
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Last 24hrNW5W6W7W7NW8NW9W11W12W13W13NW14NW13NW11NW11W10W10W4W4W6W7W9W7W8Calm
1 day agoNW4N5N6NW6NW63W8W9W15NW11W13W12NW14NW12NW10NW11NW9NW10NW7NW7NW9W8W10NW6
2 days agoNW5NW5NW5N7N66NW10NW11NW12W14NW17NW13W12NW12NW11NW9NW7NW10NW10NW8NW6N6N5N5

Tide / Current Tables for Roberts Landing, 1.3 miles west of, San Francisco Bay, California
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Roberts Landing
Click for Map
Mon -- 02:04 AM PDT     8.05 feet High Tide
Mon -- 05:48 AM PDT     Sunrise
Mon -- 08:48 AM PDT     Moonrise
Mon -- 09:24 AM PDT     -1.42 feet Low Tide
Mon -- 04:05 PM PDT     6.72 feet High Tide
Mon -- 08:34 PM PDT     Sunset
Mon -- 09:33 PM PDT     2.48 feet Low Tide
Mon -- 10:57 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.27.587.76.64.92.80.8-0.6-1.4-1.2-0.31.234.86.26.76.45.54.33.22.62.63.3

Tide / Current Tables for Oakland Airport SW, South San Francisco Bay, California Current
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Oakland Airport SW
Click for Map
Mon -- 02:02 AM PDT     -0.00 knots Slack
Mon -- 05:13 AM PDT     -1.16 knots Max Ebb
Mon -- 05:49 AM PDT     Sunrise
Mon -- 08:48 AM PDT     Moonrise
Mon -- 08:55 AM PDT     0.00 knots Slack
Mon -- 12:15 PM PDT     0.91 knots Max Flood
Mon -- 03:43 PM PDT     -0.01 knots Slack
Mon -- 05:53 PM PDT     -0.59 knots Max Ebb
Mon -- 08:34 PM PDT     Sunset
Mon -- 08:59 PM PDT     0.01 knots Slack
Mon -- 10:57 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.40-0.5-0.9-1.2-1.1-0.8-0.400.50.80.90.90.70.3-0.1-0.5-0.6-0.5-0.300.30.5

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 (8,2,3,4)
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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.