Sunday, May28, 2017 L-36.com


Marine Weather and Tides
Tamalpais-Homestead Valley, 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 5:48AMSunset 8:26PM Sunday May 28, 2017 1:37 AM PDT (08:37 UTC) Moonrise 7:58AMMoonset 10:33PM Illumination 8% 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- 910 Pm Pdt Sat May 27 2017
.small craft advisory in effect from Sunday morning through late Sunday night...
Tonight..SW winds 5 to 15 kt. Patchy fog after midnight.
Sun..SW winds 10 to 20 kt. Patchy fog in the morning.
Sun night..SW winds 10 to 20 kt.
Memorial day..SW winds 15 to 25 kt.
Mon night..SW winds 10 to 20 kt.
Tue..SW winds 15 to 25 kt. Patchy fog.
Wed..SW winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
PZZ500 910 Pm Pdt Sat May 27 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... 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.

7 Day Forecast for Marine Location Near Tamalpais-Homestead Valley, CA
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location: 37.89, -122.57     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 280530
afdmtr
area forecast discussion
national weather service san francisco bay area
1030 pm pdt Sat may 27 2017

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

Discussion As of 8:50 pm pdt Saturday... The memorial day
weekend got off to a pleasant start with widespread sunny skies
developing by afternoon, along with warmer temperatures. But even
though temperatures today were as much as ten degrees warmer than
yesterday, they were still slightly cooler than normal in most
locations.

Low clouds have begun to fill in along the coast from san mateo
county northward. Moderate onshore flow, along with the latest
boundary layer relative humidity forecasts, suggest that low
clouds will become widespread near the coast overnight and develop
around san francisco bay and into most coastal valleys as well.

On Sunday inland areas will clear out by midday, but only partial
afternoon clearing is expected at the coast. Temperatures on
Sunday will be around persistence near the ocean, but a few
degrees warmer for inland areas as the airmass over our region
continues to warm under high pressure aloft.

Little change is expected on memorial day. By Tuesday a weak upper
trough is forecast to arrive over northern california. This
trough will cool the airmass across our region as well as enhance
onshore flow. The result will be cooler temperatures inland on
Tuesday and Wednesday. However, most model guidance indicates
little change at the coast.

For the most part, the weather pattern over the next week looks to
be one which will maintain seasonable temperatures and seasonably
dry conditions.

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
Tngt Sca... Pt pinos to pt piedras blancas 0-10 nm
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
TIBC1 - Tiburon Pier, San Francisco Bay, CA 7 mi60 min Calm 53°F 1019 hPa
FTPC1 - 9414290 - San Francisco, CA 8 mi49 min W 7 G 11 54°F 55°F1019.4 hPa
46237 - San Francisco Bar, CA (142) 8 mi67 min 55°F4 ft
RCMC1 - 9414863 - Richmond, CA 9 mi49 min WNW 4.1 G 6 56°F 59°F1018.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi49 min W 1.9 G 2.9 57°F 1019.3 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 11 mi55 min W 8.9 G 13 54°F 1018.2 hPa
PXSC1 11 mi49 min 55°F 51°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi49 min W 12 G 15
OBXC1 14 mi49 min 55°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi49 min WSW 8.9 G 11 55°F 1019.3 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi49 min W 8 G 12 55°F 64°F1019.9 hPa
LNDC1 17 mi55 min WSW 8.9 G 12 56°F 1019.4 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 17 mi47 min NW 12 G 16 54°F 54°F4 ft1019.6 hPa (+0.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 20 mi49 min WNW 8 G 9.9 57°F 1018.6 hPa
PRYC1 - 9415020 - Point Reyes, CA 23 mi49 min WNW 14 G 20 55°F 53°F1019.2 hPa
UPBC1 26 mi49 min W 11 G 15
MZXC1 - 9415102 - Martinez-Amorco CA 26 mi49 min W 8.9 G 14 56°F 65°F1018.9 hPa55°F
PCOC1 - 9415144 - Port Chicago, CA 30 mi49 min WSW 12 G 14 55°F 65°F1018.2 hPa
RTYC1 - 9414523 - Redwood City, CA 33 mi49 min W 9.9 G 12 55°F 67°F1019.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 36 mi112 min WNW 8.9 54°F 1018 hPa52°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 38 mi49 min WNW 11 G 14 57°F 1017.3 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 40 mi47 min NNW 7.8 G 9.7 55°F 55°F4 ft1019.5 hPa (+0.3)
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 46 mi37 min NW 18 G 23 53°F 52°F1019.4 hPa (-0.3)51°F
46214 - Point Reyes, CA (029) 48 mi37 min 55°F5 ft

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
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SW3
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA18 mi62 minN 010.00 miFair50°F48°F94%1019.3 hPa
San Francisco, San Francisco International Airport, CA22 mi41 minW 1410.00 miOvercast56°F48°F77%1019.6 hPa
Oakland, Metro Oakland International Airport, CA23 mi44 minW 1210.00 miMostly Cloudy57°F52°F83%1019.8 hPa

Wind History from DVO (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalm4CalmCalmCalmSW9
G15
SW11W10
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N94
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N7E3SE4E5E4Calm
1 day agoSW4W4CalmSW5SW4CalmSW6S5SW65S6SW7S74
G10
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W7N6E3CalmCalmCalm
2 days agoW6W7W4SW6CalmSW65CalmCalmSE64
G10
CalmS8SW8
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SW12SW11W9W7W7SW8
G14
SW6W4

Tide / Current Tables for Sausalito, Corps of Engineers Dock, San Francisco Bay, California
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Sausalito
Click for Map
Sun -- 01:38 AM PDT     6.36 feet High Tide
Sun -- 05:51 AM PDT     Sunrise
Sun -- 08:34 AM PDT     -1.68 feet Low Tide
Sun -- 08:58 AM PDT     Moonrise
Sun -- 03:44 PM PDT     4.94 feet High Tide
Sun -- 08:24 PM PDT     Sunset
Sun -- 08:40 PM PDT     2.38 feet Low Tide
Sun -- 11:33 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.66.26.35.74.42.60.7-0.8-1.6-1.6-10.11.42.844.84.94.53.832.52.42.83.6

Tide / Current Tables for Richardson Bay Entrance, San Francisco Bay, California Current
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Richardson Bay Entrance
Click for Map
Sun -- 03:42 AM PDT     -1.15 knots Max Ebb
Sun -- 05:50 AM PDT     Sunrise
Sun -- 06:46 AM PDT     0.00 knots Slack
Sun -- 08:58 AM PDT     Moonrise
Sun -- 09:13 AM PDT     1.34 knots Max Flood
Sun -- 01:07 PM PDT     -0.01 knots Slack
Sun -- 04:23 PM PDT     -0.55 knots Max Ebb
Sun -- 06:48 PM PDT     0.01 knots Slack
Sun -- 08:23 PM PDT     Sunset
Sun -- 08:59 PM PDT     0.85 knots Max Flood
Sun -- 11:32 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.2-0.6-0.9-1.1-1.1-0.9-0.40.211.31.310.60.1-0.2-0.4-0.5-0.5-0.30.10.60.90.70.5

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 (4,6,7,8)
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Ground Weather Radar Station Sacramento, 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.