Sunday, May28, 2017 L-36.com


Marine Weather and Tides
Livermore, 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 5:46AMSunset 8:22PM Sunday May 28, 2017 3:34 AM PDT (10:34 UTC) Moonrise 7:55AMMoonset 10:29PM Illumination 9% 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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PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 220 Am Pdt Sun May 28 2017
.small craft advisory now in effect from noon today to 3 am pdt Monday...
Today..SW winds 10 kt...increasing to 15 to 25 kt in the afternoon. Patchy fog in the morning.
Tonight..W winds 15 to 25 kt...becoming southwest 5 to 15 kt after midnight. Patchy fog after midnight.
Memorial day..SW winds 10 to 20 kt. Patchy fog in the morning.
Mon night..SW winds 15 to 25 kt. Patchy fog after midnight. Patchy drizzle after midnight.
Tue..W winds 15 to 25 kt. Patchy drizzle in the morning. Patchy fog in the morning. Patchy fog after midnight.
Wed..SW winds 5 to 15 kt. Patchy fog.
Thu..SW winds 5 kt...increasing to 5 to 15 kt. Patchy fog.
PZZ500 220 Am Pdt Sun May 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northerly winds will increase across all waters today as high pressure builds off the west coast. The gusty winds will produce hazardous conditions with steeper wind waves and fresh swell. Winds will decrease Tuesday night as a weak frontal system moves through the coastal waters.

7 Day Forecast for Marine Location Near Livermore, CA
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location: 37.6, -121.66     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 281007
afdmtr
area forecast discussion
national weather service san francisco bay area
307 am pdt Sun may 28 2017

Synopsis Dry weather and seasonable temperatures are forecast for
the remainder of the holiday weekend. Slight cooling is expected for
inland areas on Tuesday and Wednesday, but otherwise little
change is forecast through the week.

Discussion As of 3:05 am pdt Sunday... The marine layer has
been rather ill-defined overnight and low clouds have been slow to
develop, especially from santa cruz county southward. However,
satellite currently shows that low clouds have filled in around
most of san francisco bay and are gradually developing elsewhere.

Low clouds are expected to clear from inland areas by late this
morning, but only partial afternoon clearing is likely at the
coast. The airmass above the marine boundary layer has warmed
since yesterday and this will translate into warmer afternoon
highs for most inland areas. Temperatures in coastal areas today
will probably be similar to yesterday.

The upper ridge currently centered over california is forecast to
shift gradually eastward over the next few days. This is expected
to result in at least modest cooling in coastal areas on memorial
day. But temperatures for inland areas are forecast to hold
steady. The upshot is that our area can expect only minor changes
for the remainder of the holiday weekend, with areas of night and
morning low clouds continuing. Temperatures will remain slightly
cooler than normal in coastal areas and near normal inland.

A weak upper trough is forecast to gradually develop near the west
coast by Tuesday. This should result in at least modest cooling on
Tuesday and Wednesday, especially inland, as a cooler airmass
overspreads our area. However, model guidance, especially the
ecmwf, indicate very little change in temperatures as we move
through the week.

The models forecast periodic isolated light precipitation across
northern california from late Monday through Wednesday as the
upper trough settles in. Nearly all of this precipitation is
expected remain over the higher mountains to our north and east.

However, the 00z ECMWF shows isolated light precipitation across
portions of our area on Wednesday as a shortwave trough moves
through. Forecast confidence is not yet high enough to add rain
chances to the forecast. However, patchy drizzle is certainly
possible at times in coastal areas, particularly from late Monday
night through Wednesday morning.

Aviation As of 10:30 pm pdt Saturday... Northwest flow spreading
stratus into the sfo bay area and approaching the mry bay area.

Upper level trough moving out of the area will result in a more
compressed marine layer tonight as ridging builds in. A little
earlier clearing Sunday.

Vicinity of ksfo... MVFR CIGS clearing by 17z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Stratus approaching the mry bay area
from the northwest. This is a favorable direction for stratus and
ifr CIGS are expected after 09z. Clearing 17-18z.

Marine As of 10:30 pm pdt Saturday... High pressure will
strengthen off the california coast resulting in increasing
northwest winds Sunday. Winds will decrease Tuesday night as a
weak frontal system moves through the coastal waters.

Mtr watches warnings advisories
Tday Sca... Pt arena to pt reyes 0-10 nm from 9 am
sca... Pt reyes to pigeon pt 0-10 nm from 9 am
sca... Pigeon pt to pt pinos 0-10 nm from 9 am
sca... Pt arena to pigeon pt 10-60 nm from 9 am
sca... Pigeon pt to pt piedras blancas 10-60 nm from 9 am
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Sf bay from 9 am
sca... Mry bay from 9 am
public forecast: dykema
aviation: W pi
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 30 mi46 min W 8 G 9.9 55°F 66°F1018.6 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi46 min WNW 12 G 14 57°F 1016.9 hPa
LNDC1 36 mi46 min WSW 9.9 G 12 55°F 1018.8 hPa
AAMC1 - 9414750 - Alameda, CA 36 mi46 min W 5.1 G 8.9 55°F 62°F1019.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 37 mi46 min SW 7 G 8.9 54°F 65°F1017.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 38 mi46 min SW 8.9 G 11
UPBC1 39 mi46 min W 9.9 G 13
MZXC1 - 9415102 - Martinez-Amorco CA 39 mi46 min W 8.9 G 11 55°F 64°F1018.4 hPa54°F
OBXC1 39 mi46 min 55°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi46 min W 8 G 13 54°F 1018.8 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi46 min WSW 6 G 12 54°F 1017.6 hPa
PXSC1 42 mi46 min 54°F 52°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 43 mi46 min S 1.9 G 4.1 56°F 1018.6 hPa
FTPC1 - 9414290 - San Francisco, CA 45 mi52 min W 8.9 G 15 54°F 55°F1018.8 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 45 mi46 min SW 9.9 G 12 56°F 1018 hPa
RCMC1 - 9414863 - Richmond, CA 46 mi52 min W 2.9 G 5.1 55°F 59°F1018.3 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 46 mi52 min WSW 2.9 53°F 1019 hPa
SFXC1 - San Francisco Bay Reserve, CA 46 mi109 min W 9.9 54°F 1018 hPa52°F

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Livermore, Livermore Municipal Airport, CA11 mi41 minW 410.00 miOvercast55°F50°F83%1018.3 hPa
San Jose, San Jose International Airport, CA21 mi41 minNW 610.00 miOvercast57°F52°F83%1018.9 hPa
Mountain View, Moffett Field, CA24 mi38 minNNW 410.00 miOvercast56°F51°F84%1019.4 hPa

Wind History from LVK (wind in knots)
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Last 24hrW3S3W4W4W5NW54SW5NW11W8W10NW14W13W15W11W12W14W12W8W8W7W6W5W4
1 day agoW11W12W9W10SW9S9SW10SW8--SW5SW8SW11SW8W8
G17
NW10W12W12W10W11W9W8W6NW3Calm
2 days agoW15
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G19
SW11W13W13W13W10W13W11W11SW9W11SW10

Tide / Current Tables for Coyote Creek, Tributary no.1, San Francisco Bay, California
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Coyote Creek
Click for Map
Sun -- 02:49 AM PDT     9.09 feet High Tide
Sun -- 05:50 AM PDT     Sunrise
Sun -- 08:56 AM PDT     Moonrise
Sun -- 10:58 AM PDT     -1.98 feet Low Tide
Sun -- 04:55 PM PDT     7.65 feet High Tide
Sun -- 08:20 PM PDT     Sunset
Sun -- 11:04 PM PDT     2.08 feet Low Tide
Sun -- 11:30 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.46.68.59.18.67.45.63.41.2-0.5-1.6-2-1.20.635.37.17.67.26.14.73.42.52.1

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 -- 12:04 AM PDT     1.28 knots Max Flood
Sun -- 02:53 AM PDT     -0.00 knots Slack
Sun -- 05:50 AM PDT     Sunrise
Sun -- 07:43 AM PDT     -1.72 knots Max Ebb
Sun -- 08:57 AM PDT     Moonrise
Sun -- 10:24 AM PDT     0.00 knots Slack
Sun -- 01:11 PM PDT     1.78 knots Max Flood
Sun -- 04:44 PM PDT     -0.01 knots Slack
Sun -- 08:21 PM PDT     Sunset
Sun -- 08:24 PM PDT     -0.82 knots Max Ebb
Sun -- 10:26 PM PDT     0.01 knots Slack
Sun -- 11:30 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.10.6-0-0.5-1-1.4-1.7-1.7-1.2-0.40.61.41.81.71.30.6-0.1-0.4-0.7-0.8-0.7-0.30.3

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 (6,6,7,8)
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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.