Wednesday, May22, 2019 L-36.com


Marine Weather and Tides
Livermore, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:50AMSunset 8:16PM Wednesday May 22, 2019 5:39 PM PDT (00:39 UTC) Moonrise 11:03PMMoonset 8:05AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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 The San Francisco Bay North Of The Bay Bridge- 232 Pm Pdt Wed May 22 2019
Rest of today..W winds 10 to 15 kt with gusts up to 25 kt.
Tonight..W winds 5 to 15 kt.
Thu..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu night..SW winds 15 to 25 kt with gusts up to 30 kt.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt.
Fri night..SW winds 5 to 15 kt.
Sat..SW winds 10 to 20 kt with gusts up to 25 kt.
Sun..SW winds 5 to 15 kt.
PZZ500 232 Pm Pdt Wed May 22 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A large, moderate period, late season northwest swell is moving across the waters today. Breakers of up to around 20 feet are possible. In addition, increasing northwest winds with gale force gusts are forecast across the northern and outer waters through the near term. Moderate wind and seas will persist through the end of the week, particularly in the northern outer waters. Hazardous conditions from squared seas will exist after the winds begin to diminish.


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 230016
afdmtr
area forecast discussion
national weather service san francisco bay area
516 pm pdt Wed may 22 2019

Synopsis Temperatures will be on the warming trend through the
remainder of the week, yet will remain below seasonal averages.

Unseasonably cool and unsettled conditions continue into the
upcoming weekend with a renewed chance of rain showers as another
system drops southward across the region.

Discussion As of 01:45 pm pdt Wednesday... Radar has been
switched back to clear air mode for the time being as shower
activity has exited to socal. Satellite imagery shows mostly sunny
skies across the bay area with widespread cumulus clouds from the
south bay southward. Increased sunshine, warmer airmass and lack
of precip has led to warmer temperatures this afternoon with many
locales running 5 to 10 degrees above Tuesday's maximum temps.

Once the Sun sets expect the cumulus to diminish with mainly clear
skies in the heart of the bay area with more clouds likely around
monterey bay. If the higher res models verify overnight, breezy to
gusty NE are forecast over the north and east bay higher terrain.

Gusts over 30 mph are possible.

The longwave pattern keeps a broad upper trough over the region
surprisingly into early next week. Temperatures will warm a few
more degrees on Thursday returning closer to normal. Highs will be
in the 60s to mid 70s. Several models rotate a weak shortwave
around the base of the upper trough Thursday afternoon. There will
likely be enough lift to support a few pop up showers or an
isolated thunderstorm over gabilan range during peak heating.

As noted on the previous discussion additional disturbances
rotate around the trough as well bringing additional precip
chances to the state. A few showers may drift westward in the
forecast area on Friday and early Saturday. Another upper low
takes aim at the bay area again late in the weekend providing a
better chance for precip late Saturday and more so on Sunday. It
doesn't look like a total wash out at this point for the holiday
weekend, but more showery in nature.

Memorial day looks cool with a few isolated showers. Warmer and
drier will develop Tuesday and Wednesday.

Aviation As of 5:13 pm pdt Wednesday... Mid level moisture
wrapping around an upper low over the southwest is causing
afternoon cumulus clouds to form. The clouds are scattered but
there could be small patches where it is bkn. These clouds should
dissipate after dark.

Strong onshore flow on the back side of the upper low will allow
stratus or stratocumulus to form late tonight. Could see sct-bkn
conditions at times over the bay area between 06z and 16z. West
winds gusting to 20 kt through 04z.

Vicinity of ksfo...VFR through the airport evening rush. MVFR
cigs possible over the approach between 12z-16z. West winds
gusting to 20 kt through 04z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Strong onshore flow will allow for early
MVFR cigs. MVFR CIGS after 02z at mry and 04z at sns.

Marine As of 04:39 pm pdt Wednesday... A large, moderate period,
late season northwest swell is moving across the waters today.

Breakers of up to around 20 feet are possible. In addition,
increasing northwest winds with gale force gusts are forecast
across the northern and outer waters through the near term.

Moderate wind and seas will persist through the end of the week,
particularly in the northern outer waters. Hazardous conditions
from squared seas will exist after the winds begin to diminish.

Mtr watches warnings advisories
Tngt High surf advisory... Caz006-505-509-529-530
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
glw... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm until 2 pm
glw... Pigeon pt to pt piedras blancas 10-60 nm until 3 am
glw... Pt arena to pt reyes 0-10 nm until 3 am
sca... Rough bar advisory for sf bar
sca... Mry bay
public forecast: mm
aviation: drp
marine: drp
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 30 mi39 min W 9.9 G 14 66°F 64°F1009.4 hPa (-1.3)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi39 min WNW 8.9 G 12 71°F 1007.3 hPa (-1.6)
AAMC1 - 9414750 - Alameda, CA 36 mi45 min W 6 G 8 63°F 61°F1009.2 hPa
LNDC1 36 mi39 min WSW 6 G 7 64°F 1008.7 hPa (-1.2)
PCOC1 - 9415144 - Port Chicago, CA 37 mi39 min W 14 G 16 69°F 63°F1007.9 hPa (-1.4)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 38 mi39 min W 8 G 9.9
UPBC1 39 mi39 min WNW 15 G 20
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi39 min W 9.9 G 12 63°F 1008.6 hPa (-1.4)
OBXC1 39 mi39 min 64°F 55°F
MZXC1 - 9415102 - Martinez-Amorco CA 39 mi39 min WNW 13 G 18 68°F 63°F1007.9 hPa (-1.3)51°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi39 min W 12 G 17 64°F 1007.7 hPa (-1.3)
PXSC1 42 mi39 min 66°F 53°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 43 mi39 min SSW 5.1 G 7 66°F 1008.9 hPa (-1.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 45 mi39 min WSW 8 G 11 68°F 1008 hPa (-1.1)
FTPC1 - 9414290 - San Francisco, CA 45 mi39 min WSW 9.9 G 15 60°F 58°F1009.2 hPa (-1.3)
RCMC1 - 9414863 - Richmond, CA 46 mi39 min S 1.9 G 4.1 71°F 60°F1008.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 46 mi54 min WNW 8 76°F 1008 hPa47°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 46 mi70 min Calm 68°F 1009 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Livermore, Livermore Municipal Airport, CA11 mi46 minW 1010.00 miFair68°F48°F51%1007.8 hPa
San Jose / Reid / Hillv, CA20 mi1.9 hrsN 1210.00 miMostly Cloudy72°F46°F41%1009.5 hPa
San Jose, San Jose International Airport, CA21 mi46 minNW 1410.00 miMostly Cloudy69°F48°F49%1008.5 hPa
Mountain View, Moffett Field, CA24 mi43 minN 1210.00 miFair70°F53°F55%1008.8 hPa

Wind History from LVK (wind in knots)
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W7W10W13W9W4W9SW44W6W3W5CalmCalmN9NE7
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2 days agoW8SW7S6SW4S3CalmE3CalmCalmCalmCalmCalmCalmCalmSW3SW3W5W8SW8W11W14W9W14
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Tide / Current Tables for Grant Line Canal (drawbridge), Old River, California
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Grant Line Canal (drawbridge)
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Wed -- 12:07 AM PDT     3.03 feet High Tide
Wed -- 05:04 AM PDT     1.38 feet Low Tide
Wed -- 05:50 AM PDT     Sunrise
Wed -- 09:04 AM PDT     Moonset
Wed -- 10:15 AM PDT     3.75 feet High Tide
Wed -- 06:27 PM PDT     -0.30 feet Low Tide
Wed -- 08:14 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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32.92.41.91.51.41.522.83.43.73.73.32.71.91.10.50-0.3-0.20.20.91.62.3

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
Wed -- 12:33 AM PDT     0.90 knots Max Flood
Wed -- 03:17 AM PDT     -0.00 knots Slack
Wed -- 05:54 AM PDT     Sunrise
Wed -- 08:09 AM PDT     -1.36 knots Max Ebb
Wed -- 09:07 AM PDT     Moonset
Wed -- 10:59 AM PDT     0.01 knots Slack
Wed -- 01:47 PM PDT     1.35 knots Max Flood
Wed -- 05:20 PM PDT     -0.00 knots Slack
Wed -- 08:16 PM PDT     Sunset
Wed -- 08:50 PM PDT     -0.55 knots Max Ebb
Wed -- 10:58 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.90.60.2-0.2-0.6-1-1.2-1.4-1.2-0.700.81.21.31.20.80.2-0.2-0.4-0.5-0.5-0.30

Weather Map and Satellite Images
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GOES Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (20,4,5,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.