Thursday, June29, 2017 L-36.com


Marine Weather and Tides
Marin City, 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 5:49AMSunset 8:38PM Thursday June 29, 2017 9:00 AM PDT (16:00 UTC) Moonrise 11:04AMMoonset 11:49PM Illumination 30% Phase: Waxing Crescent; Moon at 6 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- 845 Am Pdt Thu Jun 29 2017
.small craft advisory in effect through late tonight...
Today..SW winds 15 to 25 kt. Patchy fog late in the morning.
Tonight..SW winds 15 to 25 kt. Patchy fog after midnight.
Fri..SW winds 10 to 20 kt. Patchy fog in the morning.
Fri night..W winds 15 to 25 kt. Patchy fog after midnight.
Sat..SW winds 10 to 20 kt. Patchy fog.
Sun..SW winds 10 to 20 kt. Patchy fog.
Mon..SW winds 5 to 15 kt.
PZZ500 845 Am Pdt Thu Jun 29 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate to strong northerly winds will continue over the coastal waters as high pressure remains in place. Steep wind waves and fresh swell will dominate the coastal waters as a result of the strong winds. Persons operating small crafts should use extra caution along the central california coast and bays through at least the forthcoming weekend.

7 Day Forecast for Marine Location Near Marin City, CA
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location: 37.87, -122.5     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 291143
afdmtr
area forecast discussion
national weather service san francisco bay area
443 am pdt Thu jun 29 2017

Synopsis Seasonable summer pattern in place with a marine layer
along the coast leading to areas of night and morning low clouds
followed by sunny afternoons away from the coast. These conditions
are expected to continue through the 4th of july holiday.

Discussion As of 2:08 am pdt Thursday... Satellite imagery
shows low clouds have spread into the salinas valley as well as
across the san francisco bay to the east bay hills, with less
coverage over the north bay except for marin county. The marine
layer depth has compressed somewhat and is now around 1100 feet
per the fort ord profiler, but low clouds and fog are still
expected to form even in the north bay valleys by sunrise. Onshore
flow is still strong, with 3.3 mb between sfo and sac last hour.

An upper level trough remains over the great basin with high
pressure aloft over the eastern pacific. This ridge is forecast to
build in over california over the next couple of days resulting in
a slight warming trend, especially across inland areas where high
temperatures will once again approach 100 degrees in the warmest
locations. There will be a steep temperature gradient to the coast
where 60s to lower 70s will be the rule through the forecast
period, with continued marine influence.

An upper level trough is progged to approach the coast by the end
of the week which will deepen the marine layer and increase
onshore flow. Thus, cooler temperatures will filter inland as
well.

By early next week, the upper level high will center over the
desert southwest. Differences in model output regarding the
position of this ridge mean either high temperatures warm once
again across our southern inland areas, or if the ridge remains
farther east, continued seasonable weather. The latest ECMWF still
keeps the ridge farther east with a deepening trough off the
coast. The current forecast trend is more in line with this
solution.

Aviation As of 04:35 am pdt Thursday... For 12z tafs. Marine
layer compressed a little overnight and stratus coverage isn't as
much this morning. However, stratus is still slowly expanding.

Given the compressed nature will go with better burn off chance
this morning.VFR this afternoon. Onshore flow could be a tad
stronger today, especially at sfo.

Moderate confidence.

Vicinity of ksfo... MVFR cigs. Tricky for sfo and oak as satellite
shows edge of stratus deck is on the edge of both terminals and
moving north. Given the low conf will keep CIGS through early this
am. May need to amend if the clearing line moves completely
through terminals.VFR this afternoon. Moderate west winds around
10 to 15 kt increasing to 20 kt with poss gust to 30 kt.

Sfo bridge approach... Latest satellite and smb obs show clear over
approach. May see a few clouds creep in form the S and se.

Monterey bay terminals... Ifr CIGS through 18z-19z Thursday
morning.

Marine As of 04:34 am pdt Thursday... Moderate to strong
northerly winds will continue over the coastal waters as high
pressure remains in place. Steep wind waves and fresh swell will
dominate the coastal waters as a result of the strong winds.

Persons operating small crafts should use extra caution along the
central california coast and bays through at least the
forthcoming weekend.

Mtr watches warnings advisories
Tday Sca... Pt arena to pt reyes 0-10 nm
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
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Mry bay from 3 pm
sca... Sf bay
public forecast: sims
aviation: mm
marine: mm
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIBC1 - Tiburon Pier, San Francisco Bay, CA 3 mi49 min S 7 54°F 1015 hPa
FTPC1 - 9414290 - San Francisco, CA 5 mi49 min WSW 5.1 G 12 53°F 57°F1015.6 hPa
RCMC1 - 9414863 - Richmond, CA 6 mi49 min S 8 G 14 54°F 63°F1014.8 hPa
PXSC1 7 mi43 min 55°F 53°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi43 min S 14 G 17 55°F 1015.4 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 8 mi43 min NW 1.9 G 8 54°F 1014.5 hPa
46237 - San Francisco Bar, CA (142) 9 mi61 min 57°F5 ft
OKXC1 - 9414776 - Oakland (Berth 34), CA 10 mi43 min SW 7 G 8.9 55°F 1015.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 10 mi43 min SSW 11 G 13
OBXC1 10 mi43 min 55°F 53°F
AAMC1 - 9414750 - Alameda, CA 13 mi43 min W 6 G 8.9 55°F 66°F1016.1 hPa
LNDC1 13 mi49 min WSW 7 G 9.9 55°F 1015.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 18 mi43 min SW 11 G 13 59°F 1014 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 20 mi71 min NW 14 G 18 53°F 55°F7 ft1015.1 hPa (+1.6)
UPBC1 23 mi43 min W 7 G 8
MZXC1 - 9415102 - Martinez-Amorco CA 23 mi43 min WSW 2.9 G 7 61°F 68°F1014.5 hPa54°F
PRYC1 - 9415020 - Point Reyes, CA 27 mi43 min WNW 9.9 G 19 54°F 52°F1014.7 hPa
PCOC1 - 9415144 - Port Chicago, CA 28 mi43 min SW 7 G 12 61°F 69°F1014 hPa
RTYC1 - 9414523 - Redwood City, CA 29 mi43 min WNW 4.1 G 7 59°F 71°F1014.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 34 mi76 min WNW 11 58°F 1013 hPa55°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 35 mi43 min WNW 8 G 12 65°F 1012.9 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 40 mi71 min WNW 16 G 19 55°F 55°F7 ft1015.3 hPa (+1.3)

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
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SW4
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G16
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W8
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NW4
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G15

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA19 mi66 minN 010.00 miMostly Cloudy55°F51°F88%1014.9 hPa
San Francisco, San Francisco International Airport, CA19 mi65 minWSW 119.00 miMostly Cloudy57°F50°F78%1015.2 hPa
Oakland, Metro Oakland International Airport, CA19 mi68 minWSW 107.00 miOvercast58°F53°F84%1015.5 hPa

Wind History from SFO (wind in knots)
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G26
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SW11W5W7SW8SW7SW8W11
1 day agoW11W13W15
G22
W17W14W17
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W13W13W10W11W12W11W11W12W9SW10W10
2 days agoW9W11W11W15
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W13W9W13W15W13W13W14

Tide / Current Tables for Sausalito, Corps of Engineers Dock, San Francisco Bay, California
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Sausalito
Click for Map
Thu -- 12:16 AM PDT     Moonset
Thu -- 04:08 AM PDT     4.97 feet High Tide
Thu -- 05:50 AM PDT     Sunrise
Thu -- 10:47 AM PDT     -0.07 feet Low Tide
Thu -- 12:03 PM PDT     Moonrise
Thu -- 05:52 PM PDT     5.40 feet High Tide
Thu -- 08:36 PM PDT     Sunset
Thu -- 11:50 PM PDT     2.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.63.344.754.84.131.80.80.1-0.10.31.12.23.44.45.25.45.14.43.52.72.2

Tide / Current Tables for Richardson Bay Entrance, San Francisco Bay, California Current
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Richardson Bay Entrance
Click for Map
Thu -- 12:16 AM PDT     Moonset
Thu -- 01:54 AM PDT     -0.00 knots Slack
Thu -- 05:50 AM PDT     Sunrise
Thu -- 05:58 AM PDT     -0.77 knots Max Ebb
Thu -- 09:03 AM PDT     0.00 knots Slack
Thu -- 11:32 AM PDT     1.01 knots Max Flood
Thu -- 12:03 PM PDT     Moonrise
Thu -- 03:13 PM PDT     -0.01 knots Slack
Thu -- 06:48 PM PDT     -0.55 knots Max Ebb
Thu -- 08:36 PM PDT     Sunset
Thu -- 09:53 PM PDT     0.01 knots Slack
Thu -- 11:51 PM PDT     0.62 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.3-0-0.3-0.5-0.7-0.8-0.6-0.4-00.6110.90.60.1-0.2-0.4-0.5-0.5-0.4-0.30.10.5

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 (12,3,4,5)
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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.