Monday, June18, 2018 L-36.com


Marine Weather and Tides
El Granada, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:46AMSunset 8:35PM Monday June 18, 2018 9:56 AM PDT (16:56 UTC) Moonrise 10:20AMMoonset 11:53PM Illumination 27% Phase: Waxing Crescent; Moon at 5 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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PZZ545 Point Reyes To Pigeon Point To 10 Nm- 900 Am Pdt Mon Jun 18 2018
Today..W winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 9 seconds and sw 3 to 4 ft at 15 seconds.
Tonight..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 13 seconds and sw 3 ft at 15 seconds.
Tue..W winds 5 to 15 kt. Wind waves 1 to 3 ft. Mixed swell nw 3 to 4 ft at 12 seconds and sw 3 ft at 14 seconds.
Tue night..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. Mixed swell nw 4 to 6 ft at 13 seconds and sw 3 ft at 14 seconds.
Wed..NW winds 5 to 15 kt...increasing to 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 4 to 6 ft at 12 seconds.
Thu..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 4 to 6 ft.
Fri..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 6 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 5 to 7 ft with a dominant period of 10 seconds. Across the bar...combined seas 5 to 7 ft with a dominant period of 10 seconds. Maximum ebb current of 1.7 knots at 08:43 pm Monday and 2.9 knots at 08:13 am Tuesday.
PZZ500 900 Am Pdt Mon Jun 18 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light southerly winds will continue along the near shore waters through the morning becoming northwesterly across all waters this afternoon. Winds will remain generally light through mid-week before increasing during the later half of the week. Seas will also remain light with a mixed northwest and southerly swell.

7 Day Forecast for Marine Location Near El Granada, CA
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location: 37.5, -122.48     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 181603
afdmtr
area forecast discussion
national weather service san francisco bay area
903 am pdt Mon jun 18 2018

Synopsis A warming trend is forecast to begin on Monday and
continue through much of the week as high pressure builds over
california.

Discussion As of 09:00 am pdt Monday... First and foremost, did
a quick update to fine tune the cloud cover marine layer forecast
this morning. Interesting satellite imagery showing cloudy skies
for the N and E bay, san francisco and santa clara valley, but
clear skies from moss landing southward. Ft. Ord profiler shows no
marine layer, but the morning koak puts this inversion about
2,000 feet.

Also, tweaked temperatures upward in a few spots given sunny start
around monterey.

The rest of the forecast will heavily focus on the upcoming
warming trend and any potential heat risk concerns.

Prev discussion As of 3:02 am pdt Monday... Satellite fog product is
showing coastal low clouds extending through the monterey bay and
into the hollister valley, as well as locally into portions of
the san francisco bay area. There is much less inland extent to
the stratus compared to last night as the marine layer begins to
decrease, in response to high pressure which will begin building
into the state from the west.

High temperatures today are forecast to be much warmer than
Sunday's, especially inland areas which are expected to be in the
80s. This upper level ridge is progged to build in over the west,
peaking on Wednesday before shifting to the east over the desert
southwest. High temperatures across inland areas on Wednesday are
forecast to approach the century mark, with mid 60s to mid 70s at
the immediate coast.

The ridge will weaken somewhat by the end of the workweek as weak
impulses move across the pacific northwest. High temperatures
will moderate somewhat, but remain in the 80s and 90s across
inland areas.

Aviation As of 04:33 am pdt Sunday... For 12z tafs. Stratus has
been filling in clearing out and filling back in overnight. Cigs
have cleared out of kmry and ksns, but may build back in over the
next couple of hours. Low clouds seem to be firmly in place over
the north bay and sf bay regions. MVFR ifr conditions will persist
through the late morning for those locations (~18z). Any low
cloud redevelopment over the south bay and monterey areas may
clear sooner. Generally light winds through the period with
onshore winds this afternoon 10-15 kt.

Moderate confidence.

Vicinity of ksfo... MVFR conditions through around 18z. Once cigs
clear,VFR conditions will prevail through late tonight. Generally
light winds becoming onshore at around 15 kt this afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Low CIGS have cleared away for now, but
may build back in over the next few hours. Any stratus
redevelopment is not expected to be long lasting.VFR conditions
through late tonight before low clouds return. Generally light
winds through the period.

Marine As of 2:11 am pdt Monday... Light southerly winds will
continue through the morning before becoming northwesterly. Winds
will remain generally light through mid-week before increasing.

Seas will also remain light with a mixed northwest and southerly
swell.

Mtr watches warnings advisories
Tday Sca... Pt pinos to pt piedras blancas 0-10 nm from 5 pm
public forecast: sims
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 mi38 min NNE 1.9 G 4.1 62°F 69°F1018.4 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi38 min W 5.1 G 8 59°F 1017.2 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi44 min WNW 4.1 G 6 56°F 56°F1018.7 hPa
PXSC1 21 mi44 min 60°F 55°F
AAMC1 - 9414750 - Alameda, CA 21 mi44 min W 5.1 G 6 59°F 67°F1018.3 hPa
46237 - San Francisco Bar, CA (142) 21 mi56 min 54°F5 ft
OBXC1 22 mi38 min 59°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 22 mi38 min WSW 5.1 G 6
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 23 mi66 min SW 1.9 G 3.9 55°F 53°F6 ft1018.1 hPa (+1.7)
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi38 min WNW 4.1 G 5.1 59°F 1018.3 hPa
LNDC1 23 mi38 min W 2.9 G 6 59°F 1018.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi36 min SW 3.9 G 3.9 55°F 53°F1019.2 hPa55°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi45 min SSW 5.1 58°F 1018 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 29 mi38 min SW 8 G 9.9 1018.5 hPa
RCMC1 - 9414863 - Richmond, CA 29 mi44 min SSW 2.9 G 7 58°F 60°F1018.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 40 mi38 min W 7 G 9.9 1017.7 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi38 min W 11 G 12 66°F1017.7 hPa
PRYC1 - 9415020 - Point Reyes, CA 43 mi38 min SE 2.9 G 6 56°F1018.3 hPa
PCOC1 - 9415144 - Port Chicago, CA 45 mi38 min W 14 G 18 59°F 67°F1017.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 49 mi38 min WNW 11 G 17 1016.7 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Half Moon Bay Airport, CA1 mi61 minSW 58.00 miOvercast57°F53°F88%1018.6 hPa
San Francisco, San Francisco International Airport, CA10 mi60 minN 410.00 miOvercast64°F52°F65%1017.9 hPa
San Carlos Airport, CA12 mi67 minVar 410.00 miOvercast63°F55°F77%1017.9 hPa
Palo Alto Airport, CA19 mi69 minN 010.00 miMostly Cloudy63°F53°F73%1017.9 hPa
Oakland, Metro Oakland International Airport, CA20 mi63 minW 37.00 miOvercast60°F54°F80%1018.2 hPa
Hayward, Hayward Air Terminal, CA22 mi62 minN 010.00 miOvercast62°F53°F73%1018.8 hPa
Mountain View, Moffett Field, CA23 mi2 hrsSSE 310.00 miOvercast61°F53°F75%1018.1 hPa

Wind History from SFO (wind in knots)
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Last 24hrS8SW10S8S9S9S8
G14
S11S8SW8SW7W5W11W10W8SW5S3CalmCalmW6SW3SW4SW6W4N4
1 day agoNE4NE6NE7S9S13S19
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SW17SW18SW15SW17SW9SW6S9S6SW4S7S4SW5SE6S12S9
2 days agoS13SW13SW17SW16
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SW13S8S7S5S8S3S7SE8S8CalmCalmS3NE5

Tide / Current Tables for Princeton, Half Moon Bay, California
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Princeton
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Mon -- 12:14 AM PDT     Moonset
Mon -- 02:11 AM PDT     5.41 feet High Tide
Mon -- 05:48 AM PDT     Sunrise
Mon -- 09:09 AM PDT     -0.90 feet Low Tide
Mon -- 11:19 AM PDT     Moonrise
Mon -- 04:17 PM PDT     5.07 feet High Tide
Mon -- 08:33 PM PDT     Sunset
Mon -- 09:52 PM PDT     2.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.455.45.24.53.31.80.4-0.5-0.9-0.70.11.12.43.64.6554.43.732.52.32.6

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Mon -- 12:13 AM PDT     Moonset
Mon -- 02:07 AM PDT     1.27 knots Max Flood
Mon -- 05:11 AM PDT     -0.00 knots Slack
Mon -- 05:47 AM PDT     Sunrise
Mon -- 08:50 AM PDT     -1.88 knots Max Ebb
Mon -- 11:18 AM PDT     Moonrise
Mon -- 12:15 PM PDT     0.00 knots Slack
Mon -- 03:12 PM PDT     1.91 knots Max Flood
Mon -- 06:56 PM PDT     -0.00 knots Slack
Mon -- 08:33 PM PDT     Sunset
Mon -- 09:40 PM PDT     -1.06 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.311.31.10.70.1-0.5-1.2-1.7-1.9-1.5-1-0.20.71.61.91.81.40.8-0-0.6-1-1-0.8

Weather Map and Satellite Images
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wmap_P
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (12,3,4,5)
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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.