Saturday, March25, 2017 L-36.com


Marine Weather and Tides
Stinson Beach, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:02AMSunset 7:28PM Saturday March 25, 2017 6:41 AM PDT (13:41 UTC) Moonrise 4:46AMMoonset 4:06PM Illumination 4% Phase: Waning Crescent; Moon at 28 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- 310 Am Pdt Sat Mar 25 2017
Today..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 7 to 8 ft at 13 seconds.
Tonight..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 8 to 9 ft at 14 seconds.
Sun..W winds 10 kt...becoming south 10 to 20 kt in the afternoon. Wind waves 2 ft or less...becoming 2 to 4 ft in the afternoon. W swell 6 to 7 ft at 13 seconds. Chance of rain.
Sun night..W winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 7 ft at 12 seconds. Rain likely in the evening, then showers likely after midnight.
Mon..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 11 seconds. Slight chance of showers in the morning.
Tue..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. W swell 9 to 11 ft...becoming 9 to 12 ft.
Wed..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 6 to 8 ft with a dominant swell period of 11 seconds. Across the bar...combined seas 7 to 9 feet with a swell period of 11 seconds. Maximum ebb current of 1.6 knots at 01:42 pm Saturday and 1.1 knots at 02:42 am Sunday.
PZZ500 310 Am Pdt Sat Mar 25 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light winds and moderate seas will prevail across the waters through tonight, aside from south of pt sur and over northern Monterey bay where they are expected to moderately strengthen as the day progresses. Then on Sunday, winds over the northern waters will turn southerly and become somewhat stronger as a weak cold front approaches.

7 Day Forecast for Marine Location Near Stinson Beach CDP, CA
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location: 37.85, -122.67     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 251226
afdmtr
area forecast discussion
national weather service san francisco bay area
526 am pdt Sat mar 25 2017

Synopsis A few early morning showers can be expected today,
otherwise mostly dry through early Sunday. Rain chances will
return by Sunday afternoon and continue through Sunday night with
a few showers lingering into early Monday. Otherwise, dry and
mild weather is expected from Monday through the remainder of next
week.

Discussion As of 2:25 am pdt Saturday... Latest radar scans
continue to show light showers moving across monterey and san
benito counties, with another batch of showers forming just off
the san mateo county coast an moving to the east-southeast. Expect
this shower activity to gradually taper off as the system exits
to the east, with only a chance of showers into the morning. The
rest of the day should be mostly dry with highs in the upper 50s
to mid 60s.

The dry weather will persist into early Sunday. Then, a
relatively weak weather system is forecast to move across northern
california bringing more light rain to portions of the district
late Sunday and Sunday night. The 00z GFS brings rain into the
north bay counties by late afternoon, then down to northern
monterey county before midnight. The system is progged to quickly
move through to the east and be gone by dawn. The ECMWF lingers
precip over the southern counties a little longer into Monday, but
for the most part, most of Monday should be dry.

High pressure is then forecast to build in over the west by
Tuesday keeping the district dry through the remainder of the
forecast period. There is a slight possibility of a weak system
brushing extreme northern california by Wednesday night/early
Thursday that may bring a slight chance of precipitation, but for
now most of the rainfall should remain to the north.

Aviation As of 05:10 am pdt Saturday... Final residual
scattered showers are moving through the southern half of the
district, and resulting in temporary reductions in ceilings and
visibilities to MVFR and ifr. Development of haze and patches of
fog in the valleys is also now occurring across the forecast area,
in the residual moist boundary layer air mass.VFR conditions look
to return to all but possibly monterey bay area terminals by late
morning. Lower than average confidence.

Vicinity of ksfo... PresentVFR conditions considered likely to
continue throughout the day, but can't completely rule out
possible diminishment of CIGS to MVFR during the morning. Onshore
winds increasing to 15-20 knots latter part of the afternoon.

Sfo bridge approach... Same as ksfo.

Monterey bay terminals... Conditions presently varying rapidly
through the range fromVFR to lifr as final area of showers moves
through. Project MVFR ceilings to generally prevail by around
sunrise, then improving toVFR by late morning to early
afternoon.

Marine As of 03:10 am pdt Saturday... Light winds will prevail
across the waters through tonight, aside from south of pt sur and
over northern monterey bay where they are expected to moderately
strengthen as the day progresses. Then on Sunday, winds over the
northern waters will turn southerly and become somewhat stronger
as a weak cold front approaches.

Mtr watches/warnings/advisories
Tday Sca... Mry bay from 2 pm
sca... Pt pinos to pt piedras blancas 0-10 nm from 11 am
public forecast: sims
aviation: blier
marine: blier
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46237 - San Francisco Bar, CA (142) 5 mi41 min 55°F8 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 11 mi51 min NNW 9.7 G 12 54°F 54°F8 ft1020.9 hPa (-0.6)
FTPC1 - 9414290 - San Francisco, CA 11 mi41 min N 5.1 G 7 53°F 56°F1021.1 hPa (-0.4)
PXSC1 15 mi41 min 54°F 50°F
RCMC1 - 9414863 - Richmond, CA 15 mi41 min N 6 G 7 52°F 56°F1020.6 hPa (-0.5)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi41 min N 1 G 2.9 52°F 1021.1 hPa (-0.4)
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi41 min N 7 G 8.9 53°F 1020.9 hPa (-0.4)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi41 min N 8 G 8.9
OBXC1 18 mi41 min 53°F 51°F
PRYC1 - 9415020 - Point Reyes, CA 19 mi59 min WNW 4.1 G 6 54°F 55°F1020.7 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi41 min N 2.9 G 6 53°F 58°F1021.2 hPa (-0.4)
LNDC1 21 mi41 min NNE 5.1 G 7 53°F 1020.8 hPa (-0.4)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 26 mi41 min NW 5.1 G 6 52°F 1020.7 hPa (-0.5)
UPBC1 32 mi41 min WNW 8 G 9.9
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi41 min W 8 G 9.9 53°F 57°F1021 hPa (-0.5)53°F
RTYC1 - 9414523 - Redwood City, CA 34 mi41 min WNW 5.1 G 6 54°F 59°F1020.3 hPa (-0.4)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 35 mi51 min NW 12 G 14 54°F 55°F9 ft1020.4 hPa (-0.6)
PCOC1 - 9415144 - Port Chicago, CA 36 mi41 min W 8 G 8.9 52°F 57°F1020.6 hPa (-0.5)
SFXC1 - San Francisco Bay Reserve, CA 42 mi56 min N 1.9 47°F 1021 hPa47°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 43 mi31 min NNW 5.8 G 7.8 53°F 55°F1021.3 hPa51°F
46214 - Point Reyes, CA (029) 43 mi49 min 55°F9 ft
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 44 mi41 min W 7 G 9.9 53°F 1020.4 hPa (-0.6)

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA21 mi66 minN 710.00 miA Few Clouds48°F48°F100%1021.3 hPa
San Francisco, San Francisco International Airport, CA23 mi1.8 hrsWNW 610.00 miOvercast53°F50°F89%1020.9 hPa

Wind History from DVO (wind in knots)
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Last 24hrSE12SE10SE6
G13
SE10S7
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SE7S9SW8SW13SW83SW6S7SW4CalmCalmCalmCalmCalmCalmCalmCalmN5
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1 day agoCalmCalmCalmCalmNW946
G11
SW9CalmSE5SW10W15
G20
CalmCalmCalmSE4CalmCalmSE4SE3S6SE5SE10SE7
2 days agoW6W6
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G27
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W10NW8
G15
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G12
N5NE6Calm

Tide / Current Tables for Bolinas Lagoon, California
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Bolinas Lagoon
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Sat -- 04:54 AM PDT     1.13 feet Low Tide
Sat -- 05:46 AM PDT     Moonrise
Sat -- 07:06 AM PDT     Sunrise
Sat -- 10:11 AM PDT     3.88 feet High Tide
Sat -- 05:05 PM PDT     Moonset
Sat -- 05:15 PM PDT     0.01 feet Low Tide
Sat -- 07:27 PM PDT     Sunset
Sat -- 11:16 PM PDT     3.64 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.22.82.21.61.21.11.422.83.53.93.83.32.61.70.90.300.20.71.62.53.23.6

Tide / Current Tables for San Francisco Bay Entrance (Golden Gate), California Current
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San Francisco Bay Entrance (Golden Gate)
Click for Map
Sat -- 12:29 AM PDT     -0.00 knots Slack
Sat -- 02:59 AM PDT     -3.06 knots Max Ebb
Sat -- 05:45 AM PDT     Moonrise
Sat -- 06:29 AM PDT     0.00 knots Slack
Sat -- 07:05 AM PDT     Sunrise
Sat -- 09:18 AM PDT     3.07 knots Max Flood
Sat -- 12:13 PM PDT     -0.00 knots Slack
Sat -- 03:12 PM PDT     -4.42 knots Max Ebb
Sat -- 05:05 PM PDT     Moonset
Sat -- 06:58 PM PDT     0.01 knots Slack
Sat -- 07:26 PM PDT     Sunset
Sat -- 09:55 PM PDT     3.78 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1-1-2.6-3.1-2.7-1.9-0.70.82.332.920.4-1.6-3.5-4.4-4.1-3.2-1.80.123.43.83.3

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 (9,2,3,4)
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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.