Friday, June23, 2017 L-36.com


Marine Weather and Tides
Pleasanton, CA

Version 3.4
What's New / NOTES
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 5:45AMSunset 8:34PM Friday June 23, 2017 11:58 AM PDT (18:58 UTC) Moonrise 4:34AMMoonset 7:14PM Illumination 0% Phase: New Moon; Moon at 29 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- 831 Am Pdt Fri Jun 23 2017
.small craft advisory in effect through this evening...
Today..SW winds 15 to 25 kt.
Tonight..SW winds 15 to 25 kt. Patchy fog after midnight.
Sat..SW winds 15 to 25 kt. Patchy fog in the morning.
Sat night..SW winds 15 to 25 kt.
Sun..SW winds 15 to 25 kt.
Mon..SW winds 10 to 20 kt.
Tue..SW winds 5 to 15 kt.
PZZ500 831 Am Pdt Fri Jun 23 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds over the coastal waters today. Onshore winds will be breezy through the golden gate gap and across the northern san francisco bay. Northwest winds return this weekend. Generally decreasing seas through the coming days.

7 Day Forecast for Marine Location Near Pleasanton, CA
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location: 37.66, -121.89     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 231744
afdmtr
area forecast discussion
national weather service san francisco bay area
1044 am pdt Fri jun 23 2017

Synopsis Cooling trend starts today for most areas as onshore
flow returns. The far interior valleys will remain seasonably
warm through this evening. The overall trend this weekend and into
next week will be a return to more seasonable temperatures along
with more extensive night and morning low clouds followed by sunny
afternoons.

Discussion As of 08:20 am pdt Friday... Turn on the ac, the
natural ac that is. Morning visible satellite reveals a more
"summer" like pattern with widespread low clouds and patchy fog.

The latest 24 hour trend indicates much cooler conditions this
morning. For instance, livermore is currently 14 degrees colder
than yesterday at this time. The cooling is likely attributed to
the increase marine layer and a breaking down of the strong high
pressure. The cooler temps can also be found in the hills as well,
but thermal belts are still active with temps in the 70s and low
80s.

For today... Much needed relief for the entire region. Will keep
heat advisories going through this evening as far interior
locations will still exceed 90 degrees despite the cooling trend.

No update planned at this time.

Prev discussion As of 3:34 am pdt Friday...

looking at the 06z NAM graphical and MOS output numbers confidence
is growing that the overall trend this weekend will be continued
cooling back to or even slightly below normal by Sunday afternoon.

In general it looks like a more normal summer time weather
pattern this weekend across the bay area with night and morning
low clouds pulling back to the coast and followed by clear and
warm afternoons.

Latest ECMWF keeps a zonal or slightly cyclonic flow aloft off the
coast for next week implying near normal temperatures with dry
weather forecast. Longer range solutions later next week or
towards the end of the month show more pronounced ridging with
potential for another round of weak offshore flow and associated
warming.

Aviation As of 10:41 am pdt Friday... For 18z tafs. Current
visible satellite shows marine layer mixing out nicely over land,
resulting inVFR at all TAF sites. Marine layer is expected to
remain just offshore through the afternoon, but will likely push
back onshore this evening and overnight. Generally light onshore
winds today, except breezy onshore winds through coastal gaps and
valleys, including near ksfo, by this afternoon and evening.

Forecast confidence: moderate
vicinity of ksfo... CurrentlyVFR. Ifr CIGS expected to return
overnight tonight, sometime around 10z at ksfo, and sooner for
koak. Breezy afternoon winds this afternoon, around 15-20 kt.

Sfo bridge approach... Lifr-ifr CIGS expected around 08-09z over
the approach.

Monterey bay terminals...VFR through the afternoon, with early
return of stratus this evening, around 02-03z. Early morning
lifr CIGS and fog possible before sunrise. Generally light winds
this afternoon, occasionally breezy.

Marine As of 10:23 am pdt Friday... Generally light southerly
winds over the coastal waters today. Onshore winds will be breezy
through the golden gate gap and across the northern san francisco
bay. Northwest winds return this weekend. Generally decreasing
seas through the coming days.

Mtr watches warnings advisories
Tday Heat advisory... Caz510-511-517-518
sca... Sf bay
public forecast: mm rww
aviation: bam
marine: bam
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 20 mi47 min N 6 G 8 65°F 74°F1012.4 hPa
AAMC1 - 9414750 - Alameda, CA 23 mi47 min W 6 G 8.9 65°F 67°F1013.6 hPa
LNDC1 23 mi53 min NNW 5.1 G 8 64°F 1013.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 25 mi53 min W 11 G 12
OBXC1 26 mi47 min 61°F 56°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 26 mi47 min NW 18 G 21 72°F 1010.6 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 26 mi47 min WNW 9.9 G 12 60°F 1013.3 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 28 mi47 min W 13 G 18 62°F 1012.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 28 mi47 min W 20 G 22 69°F 72°F1011.5 hPa
UPBC1 29 mi53 min WNW 18 G 20
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi47 min WNW 17 G 19 69°F 72°F1012.2 hPa61°F
PXSC1 29 mi47 min 63°F 55°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 30 mi101 min SSW 9.9 G 13 60°F 1013.4 hPa
FTPC1 - 9414290 - San Francisco, CA 32 mi47 min WSW 2.9 G 13 57°F 58°F1013.9 hPa
RCMC1 - 9414863 - Richmond, CA 33 mi53 min SSW 5.1 G 8 62°F 63°F1013 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 34 mi47 min 62°F 1013 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 34 mi47 min SW 12 G 14 66°F 1012.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 38 mi74 min W 12 73°F 1011 hPa62°F
46237 - San Francisco Bar, CA (142) 40 mi59 min 56°F5 ft

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Livermore, Livermore Municipal Airport, CA5 mi66 minSW 610.00 miFair80°F59°F49%1011.1 hPa
Hayward, Hayward Air Terminal, CA12 mi65 minVar 610.00 miFair73°F54°F51%1013.6 hPa
Palo Alto Airport, CA17 mi72 minNNW 810.00 miClear70°F64°F83%1012.9 hPa
Mountain View, Moffett Field, CA18 mi2 hrsN 510.00 miFair69°F61°F76%1013.1 hPa
Oakland, Metro Oakland International Airport, CA18 mi66 minWNW 1110.00 miA Few Clouds71°F57°F61%1012.9 hPa
San Jose, San Jose International Airport, CA20 mi66 minNW 610.00 miFair76°F60°F58%1012.3 hPa
San Carlos Airport, CA21 mi72 minN 1010.00 miClear68°F60°F78%1012.9 hPa
San Jose / Reid / Hillv, CA22 mi64 minVar 510.00 miClear79°F57°F48%1013.2 hPa
Concord, Buchanan Field, CA24 mi66 minNW 1010.00 miFair79°F55°F45%1010.1 hPa

Wind History from LVK (wind in knots)
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Last 24hrW63S5W9W11W12W12W14W11W11W7NW5W6NW6W6NW5W5W4W4SW3SW3SW5SW4SW6
1 day agoSW44Calm6W12W14W9W11S3NW4NW4N3CalmCalmCalmS3NE3CalmCalmCalm33NE7NW3
2 days agoW7W5W8NW10NW13NW12W10W10NW7NW9NW10NW8NW4NW7NW6NW5NW6N3NW5CalmW3W433

Tide / Current Tables for Mowry Slough, San Francisco Bay, California
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Mowry Slough
Click for Map
Fri -- 05:35 AM PDT     Moonrise
Fri -- 05:47 AM PDT     Sunrise
Fri -- 07:39 AM PDT     -1.51 feet Low Tide
Fri -- 01:54 PM PDT     7.52 feet High Tide
Fri -- 07:23 PM PDT     2.19 feet Low Tide
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:13 PM PDT     Moonset
Fri -- 08:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.59.17.85.93.61.4-0.4-1.3-1.4-0.41.33.45.577.575.84.332.32.43.75.77.7

Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
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Dumbarton Bridge
Click for Map
Fri -- 01:02 AM PDT     -0.00 knots Slack
Fri -- 04:09 AM PDT     -2.15 knots Max Ebb
Fri -- 05:35 AM PDT     Moonrise
Fri -- 05:48 AM PDT     Sunrise
Fri -- 07:41 AM PDT     0.00 knots Slack
Fri -- 10:54 AM PDT     2.21 knots Max Flood
Fri -- 02:44 PM PDT     -0.00 knots Slack
Fri -- 04:47 PM PDT     -0.95 knots Max Ebb
Fri -- 07:25 PM PDT     0.00 knots Slack
Fri -- 07:32 PM PDT     New Moon
Fri -- 08:13 PM PDT     Moonset
Fri -- 08:33 PM PDT     Sunset
Fri -- 10:37 PM PDT     1.78 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90-1-1.8-2.1-2-1.5-0.70.31.422.221.50.7-0.2-0.8-0.9-0.7-0.30.41.21.71.7

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 (14,3,4,5)
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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.