Wednesday, April26, 2017 L-36.com


Marine Weather and Tides
Black Point-Green Point, 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 6:16AMSunset 7:58PM Wednesday April 26, 2017 4:23 PM PDT (23:23 UTC) Moonrise 5:48AMMoonset 7:26PM Illumination 1% Phase: New Moon; Moon at 1 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- 154 Pm Pdt Wed Apr 26 2017
.small craft advisory in effect through late tonight...
Tonight..W winds 15 to 25 kt...decreasing to 5 to 15 kt after midnight.
Thu..NW winds 5 to 15 kt...increasing to 10 to 20 kt.
Thu night..W winds 10 to 20 kt.
Fri..NW winds 5 to 15 kt.
Fri night..NW winds 10 to 20 kt.
Sat..W winds 5 to 15 kt.
Sun..W winds 5 kt...increasing to 5 to 15 kt.
Mon..NW winds 5 to 15 kt.
PZZ500 154 Pm Pdt Wed Apr 26 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northerly flow will increase across the entire region tonight and Thursday as high pressure builds. The stronger winds will result in steep wind waves and fresh swell. These hazardous conditions will persist into the weekend.

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 262052
afdmtr
area forecast discussion
national weather service san francisco bay area
152 pm pdt Wed apr 26 2017

Synopsis Isolated showers across the region will continue to
diminish this afternoon as a weak frontal system pushes further
inland. Dry weather returns for Thursday as high pressure builds
over the eastern pacific. Further warming of daytime temperatures
will then be likely through the weekend and potentially into early
next week as high pressure strengthens along the california
coast.

Discussion As of 01:51 pm pdt Wednesday... Very light
precipitation continues to be reported early this afternoon
across portions of the region, mainly in/around san mateo county.

Rainfall from earlier today generally added up only to a few
hundredths of an inch or so with some higher elevations picking up
around 1/10". Should see chances for light rain showers to
diminish through the remainder of the day as the weak system
pushes further south and inland. Low clouds will likely linger
into tonight with temperatures only falling into the lower 50s for
most locations while upper 40s are possible in the north bay and
in the hills.

A warming trend will then get underway beginning on Thursday,
especially across the north bay where cooler conditions exist this
afternoon. With clearing skies by late week, temperatures will
warm a few more degrees on Friday as a ridge builds over the
eastern pacific. Meanwhile, an upper level low is forecast to
develop and move into the four corners region Thursday into Friday
and will result in the tightening of the surface pressure
gradient along the coast. This will result in breezy northerly
winds from Thursday into Friday, especially in the hills with
gusts of 35 to 40 mph possible.

By the upcoming weekend, the ridge of high pressure aloft will
become the dominate feature and allow for additional warming.

Daytime temperatures will likely warm into the 70s to lower 80s
inland while the typically cooler coastal areas approach the 70
degree mark. The latest forecast guidance now suggest the ridge
will continue to build and shift inland into the west coast by
early next week. The result will be weak offshore flow at times,
especially for inland areas, with more widespread 80s for daytime
maximum temperatures.

Aviation As of 10:33 am pdt Thursday... Dynamic forecast,
especially in the first 12 hours of the forecast. A mix of ifr to
MVFR conditions will persist and impact all terminals this
morning. A few lingering showers will be possible through early
this afternoon. Do expect a gradual improvement as the winds
increase. MVFR toVFR will gradually develop late tonight and
early Thursday.

Vicinity of ksfo... CIGS 700-1200 feet will lingering for koak and
ksfo through roughly 20z. Waiting for an uptick in the winds,
which will help to lift cigs/vis. West winds generally 10-20kt
with gusts up to 25kt possible. MVFR toVFR will persist
overnight.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR conditions. Light onshore winds,
gusting to 15-20kt by this afternoon. Ifr CIGS tonight.

Marine As of 08:45 am pdt Wednesday... West and northwest winds
will persist over the coastal waters with locally stronger winds
near the big sur coast. Northwest winds increase tonight across
the coastal waters as high pressure builds offshore. Strong winds
and steep fresh swell will then persist through the remainder of
the week.

Mtr watches/warnings/advisories
Tngt Sca... Pigeon pt to pt pinos 0-10 nm from 3 am
sca... Pigeon pt to pt piedras blancas 10-60 nm from 3 am
sca... Pt arena to pt reyes 0-10 nm from 9 pm
sca... Pt reyes to pigeon pt 0-10 nm from 9 pm
sca... Pt arena to pigeon pt 10-60 nm from 9 pm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Sf bay until 3 am
public forecast: rgass
aviation: mm
marine: mm
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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 mi54 min SW 9.9 G 12 61°F 1016.8 hPa
RCMC1 - 9414863 - Richmond, CA 14 mi54 min WSW 4.1 G 8 60°F 57°F1017 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 16 mi54 min SSW 8.9 G 12 61°F 1017.6 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi54 min WSW 4.1 G 11 57°F 56°F1018.2 hPa
UPBC1 21 mi54 min W 2.9 G 5.1
MZXC1 - 9415102 - Martinez-Amorco CA 21 mi54 min Calm G 1.9 61°F 59°F1017.4 hPa60°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 22 mi54 min W 9.9 G 14 59°F 1017.7 hPa
PXSC1 22 mi54 min 59°F 57°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi54 min W 8.9 G 14 59°F 1016.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 23 mi54 min WSW 14 G 15
46237 - San Francisco Bar, CA (142) 23 mi54 min 55°F5 ft
OBXC1 23 mi54 min 58°F 57°F
LNDC1 25 mi60 min W 7 G 12 59°F 1018 hPa
PCOC1 - 9415144 - Port Chicago, CA 25 mi54 min WSW 9.9 G 12 60°F 59°F1016.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 26 mi99 min W 13 62°F 1017 hPa58°F
PRYC1 - 9415020 - Point Reyes, CA 26 mi54 min W 12 G 17 58°F 54°F1017.5 hPa
AAMC1 - 9414750 - Alameda, CA 26 mi54 min W 6 G 9.9 60°F 61°F1018.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi94 min WNW 12 G 14 55°F 54°F5 ft1018.4 hPa (+0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi54 min WNW 20 G 26 64°F 1015.5 hPa
RTYC1 - 9414523 - Redwood City, CA 44 mi54 min W 11 G 13 62°F 64°F1017.7 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 44 mi44 min WNW 14 G 18 56°F 55°F1017.5 hPa55°F

Wind History for Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
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NW7
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G7
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W7
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G12
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G14
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G17
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G12
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W11
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--
SW11
G17
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G10

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA4 mi29 minWSW 11 G 1710.00 miOvercast64°F57°F78%1016.6 hPa
Petaluma Municipal Airport, CA12 mi49 minWSW 12 G 2010.00 miOvercast63°F57°F83%1016.9 hPa
Napa, Napa County Airport, CA14 mi30 minWSW 1110.00 miFog/Mist68°F57°F68%1015.1 hPa

Wind History from DVO (wind in knots)
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Last 24hrSW11
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5N7N6NW4CalmSW6SW5SW7CalmNE3SW3CalmSW5SW6SW5W4
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1 day agoNW8
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Calm6NW10CalmN8NW12W8
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2 days agoW18
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--W16
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W5SW4SW4S5SW4SW7SW7SW9
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G20
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G18

Tide / Current Tables for Petaluma River entrance, San Pablo Bay, California
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Petaluma River entrance
Click for Map
Wed -- 01:10 AM PDT     6.49 feet High Tide
Wed -- 05:18 AM PDT     New Moon
Wed -- 06:19 AM PDT     Sunrise
Wed -- 06:47 AM PDT     Moonrise
Wed -- 08:08 AM PDT     -0.59 feet Low Tide
Wed -- 02:09 PM PDT     5.49 feet High Tide
Wed -- 07:56 PM PDT     Sunset
Wed -- 08:09 PM PDT     0.93 feet Low Tide
Wed -- 08:25 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.96.56.35.442.40.9-0.2-0.6-0.20.82.23.74.95.55.34.53.42.21.30.91.32.43.8

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Wed -- 01:10 AM PDT     -0.00 knots Slack
Wed -- 04:21 AM PDT     -0.92 knots Max Ebb
Wed -- 05:18 AM PDT     New Moon
Wed -- 06:19 AM PDT     Sunrise
Wed -- 06:47 AM PDT     Moonrise
Wed -- 08:18 AM PDT     0.00 knots Slack
Wed -- 10:44 AM PDT     0.64 knots Max Flood
Wed -- 02:18 PM PDT     -0.00 knots Slack
Wed -- 04:48 PM PDT     -0.58 knots Max Ebb
Wed -- 07:46 PM PDT     0.00 knots Slack
Wed -- 07:56 PM PDT     Sunset
Wed -- 08:25 PM PDT     Moonset
Wed -- 10:19 PM PDT     0.84 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.1-0.4-0.7-0.9-0.9-0.8-0.5-0.10.30.60.60.60.40.1-0.3-0.5-0.6-0.5-0.30.10.60.80.8

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 (19,4,5,8)
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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.