Tuesday, March26, 2019 L-36.com


Marine Weather and Tides
Black Point-Green Point, 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 7:02AMSunset 7:28PM Tuesday March 26, 2019 3:58 AM PDT (10:58 UTC) Moonrise 12:00AMMoonset 10:02AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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- 300 Am Pdt Tue Mar 26 2019
Today..NW winds around 5 kt...becoming sw this afternoon. A slight chance of showers.
Tonight..S winds up to 10 kt. Rain.
Wed..SW winds 10 to 20 kt with gusts up to 30 kt. Showers and a slight chance of Thunderstorms.
Wed night..SW winds 5 to 15 kt. A chance of showers.
Thu..S winds 5 to 15 kt. A chance of showers.
Thu night..W winds 5 to 10 kt.
Fri..NW winds 5 to 10 kt.
Sat..NW winds up to 10 kt. Winds and wind waves higher in and near Thunderstorms.
PZZ500 300 Am Pdt Tue Mar 26 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure off the oregon coast will keep light to moderate southerly winds through Tuesday night. Stronger winds can be expected over the northern waters Tuesday night and early Wednesday morning as a frontal system moves through. Winds will switch to southwest Wednesday and Thursday as high pressure builds off the california coast. There is a slight chance for Thunderstorms Wednesday.


7 Day Forecast for Marine Location Near Black Point-Green Point, CA
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location: 38.11, -122.5     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 260530
afdmtr
area forecast discussion
national weather service san francisco bay area
1030 pm pdt Mon mar 25 2019

Synopsis A weak front continues to slowly push through the bay
area resulting in showers this evening. The front will stall over
the south bay and central coast on Tuesday keeping a chance of
showers in the forecast for southern areas. The next front will
push into the area later Tuesday night into early Wednesday with
another organized chance of rain. Shower and isolated
thunderstorms will be possible Wednesday before ending by
Thursday. Drying trend Friday into the weekend.

Discussion As of 08:58 pm pdt Monday... A weak cold front
continues to slowly move south and east through the bay area this
evening. Latest surface analysis indicates the front has push
through san francisco and is now moving through the santa cruz
mountains. Rainfall since this morning has been greatest across
the north bay, coastal santa cruz mts and higher terrain of the
east bay. Latest kmux radar imagery still indicates rain showers
ahead and along the cold front. Recent trends on radar do show the
front is starting to lose some steam. Taking a closer look one
can see a nice rain shadow effect happening on the lee side of the
santa cruz mts. Based on trends from radar and latest hi-res
model (hrrr) decided to update evening forecast lowering rain
potential monterey southward and over san benito county. Lowered
rainfall amounts to a tenth or two.

Take a sneak peak at the 00z models - the NAM really dries things
out overnight while the GFS is a little wetter. That being said,
both models continue shower activity tomorrow as the frontal
boundary continues to weaken and small waves vort maxes moves
through the region.

Prev discussion As of 1:51 pm pdt Monday... A frontal boundary is
weakening as it passes through the bay area this afternoon and
evening. Showers will continue to impact the afternoon evening
commute but mainly be light to occasionally moderate in intensity.

Shower activity will decrease this evening and overnight. The
surface boundary will wash out over the south bay and central
coast by early Tuesday morning.

As the main upper trough approaches on Tuesday, there may be
sufficient upper lift divergence over the left over surface
boundary to allow for more showers to develop on Tuesday. In
contrast to today the best chances will be from the far east bay
counties through the south bay and around the central coast in the
vicinity of the surface moisture boundary. The NAM model remains
most bullish on generating showers Tuesday while the ECMWF and gfs
are drier.

Rain chances will then increase again later Tuesday night into
weds, especially across the north bay as another surface front
approaches the region. This will lead to increased shower chances
right through weds morning. Enough cold air aloft by weds to allow
thunderstorm chances be put into the forecast (as inherited from
overnight shift).

The parent upper low responsible for all the shower chances the
next few days will finally move onshore late weds night into
Thursday morning. Precip chances should rapidly end by late
Thursday afternoon and evening. For all the talk of showers the
next few days, amounts in general look to be light with some
portions of interior monterey san benito potentially seeing no
rainfall at all. Daytime highs will be on the cool side of normal
with cloud cover and cool temps aloft. However, any peaks of
sunshine will allow temps to jump into the 60s most days.

High pressure to build Friday into the weekend with dry and mild
weather. Storm track remains somewhat active next week but right
now the best precip chances remain north of i-80.

Aviation As of 10:55 pm pdt Monday... For 06z tafs. The cold
front will continue to slide south across the region spreading
rain to area terminals from ksfo south. Showers will lingering
through tonight and likely through Tuesday. Winds will remain
light veering to the west behind the front... Otherwise winds will
be calm and variable overnight. MVFR toVFR CIGS will prevail
through much of the period.

Vicinity of ksfo... MVFR CIGS will prevail with showers gradually
tapering to vicinity showers overnight. Light west winds will
becoming light and variable overnight.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR to MVFR CIGS will prevail with
showers possible overnight as the front slides south. Light winds.

Marine As of 9:00 pm pdt Monday... Low pressure off the oregon
coast will keep light to moderate southerly winds through Tuesday
night. Stronger winds can be expected over the northern waters
Tuesday night. Winds will switch to southwest on Wednesday and
Thursday as high pressure builds off the california coast.

Mtr watches warnings advisories
Tngt None.

Public forecast: mm rww
aviation: cw
marine: W pi cw
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 13 mi41 min 52°F 1017.8 hPa
RCMC1 - 9414863 - Richmond, CA 14 mi47 min 53°F 56°F1017.8 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 15 mi48 min Calm 49°F 1018 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 16 mi41 min 53°F 1018.3 hPa
UPBC1 21 mi71 min WNW 8.9 G 11
FTPC1 - 9414290 - San Francisco, CA 21 mi47 min 52°F 56°F1018.3 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 21 mi41 min 52°F 57°F1018 hPa52°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi41 min 52°F 1017.1 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 22 mi41 min 53°F 1018.1 hPa
PXSC1 22 mi41 min 53°F 50°F
OBXC1 23 mi41 min 53°F 51°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 23 mi71 min W 6 G 8
46237 - San Francisco Bar, CA (142) 24 mi59 min 55°F8 ft
PCOC1 - 9415144 - Port Chicago, CA 25 mi41 min 52°F 57°F1018 hPa
LNDC1 25 mi41 min 53°F 1018 hPa
PRYC1 - 9415020 - Point Reyes, CA 26 mi41 min 56°F1017.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 26 mi74 min W 4.1 51°F 1018 hPa49°F
AAMC1 - 9414750 - Alameda, CA 26 mi47 min 53°F 58°F1018.4 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi39 min W 3.9 G 5.8 53°F 55°F1018.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi41 min 53°F 1017.6 hPa
RTYC1 - 9414523 - Redwood City, CA 44 mi41 min 53°F 59°F1018.4 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 44 mi39 min NW 1.9 G 3.9 55°F1017.7 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA4 mi64 minN 010.00 miOvercast48°F48°F100%1018.3 hPa
Petaluma Municipal Airport, CA12 mi84 minN 09.00 miOvercast45°F44°F100%1018.3 hPa
Napa, Napa County Airport, CA14 mi65 minS 410.00 miOvercast49°F46°F93%1017.1 hPa

Wind History from DVO (wind in knots)
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SW7SW6Calm--CalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmN3S3CalmCalmCalmS3E6SE6SE8SE6SE6
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2 days agoS5S4Calm--W7NW10NW9NW10NW9
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CalmNE3E4N6CalmCalmCalmS4

Tide / Current Tables for Petaluma River entrance, San Pablo Bay, California
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Petaluma River entrance
Click for Map
Tue -- 12:52 AM PDT     Moonrise
Tue -- 05:19 AM PDT     5.85 feet High Tide
Tue -- 07:04 AM PDT     Sunrise
Tue -- 11:02 AM PDT     Moonset
Tue -- 12:56 PM PDT     0.16 feet Low Tide
Tue -- 07:24 PM PDT     4.40 feet High Tide
Tue -- 07:27 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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22.43.24.35.25.85.85.24.33.11.910.30.20.51.22.23.23.94.44.343.53

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Tue -- 12:52 AM PDT     Moonrise
Tue -- 01:57 AM PDT     0.65 knots Max Flood
Tue -- 05:36 AM PDT     -0.00 knots Slack
Tue -- 07:04 AM PDT     Sunrise
Tue -- 09:17 AM PDT     -0.75 knots Max Ebb
Tue -- 11:01 AM PDT     Moonset
Tue -- 01:20 PM PDT     0.00 knots Slack
Tue -- 04:19 PM PDT     0.49 knots Max Flood
Tue -- 07:27 PM PDT     Sunset
Tue -- 07:27 PM PDT     -0.00 knots Slack
Tue -- 09:54 PM PDT     -0.39 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.50.70.60.40.2-0.1-0.5-0.7-0.7-0.7-0.6-0.4-0.10.20.40.50.50.30.1-0.2-0.3-0.4-0.3

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (6,6,7,8)
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Ground Weather Radar Station Sacramento, 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.