Monday, August21, 2017 L-36.com


Marine Weather and Tides
Novato, 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 6:30AMSunset 7:55PM Monday August 21, 2017 6:43 PM PDT (01:43 UTC) Moonrise 5:22AMMoonset 7:07PM Illumination 0% Phase: New Moon; Moon at 29 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- 202 Pm Pdt Mon Aug 21 2017
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..W winds 10 to 20 kt.
Tue..SW winds 10 to 20 kt.
Tue night..SW winds 10 to 20 kt.
Wed..SW winds 5 to 15 kt.
Wed night..SW winds 10 to 20 kt.
Thu..SW winds 5 to 15 kt.
Fri..SW winds 10 kt.
Sat..SW winds 10 kt.
PZZ500 202 Pm Pdt Mon Aug 21 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Weak low pressure over the coastal waters will continue to yield light to moderate winds through midweek. High pressure will develop for the second half of the week and cause the coastal pressure gradient to tighten. This is forecast to bring strong to near gale northerly winds and associated large steep seas. No long period swell is expected for the next 7 days.

7 Day Forecast for Marine Location Near Novato, CA
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location: 38.1, -122.59     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 220036
afdmtr
area forecast discussion
national weather service san francisco bay area
536 pm pdt Mon aug 21 2017

Synopsis Cooler than average temperatures, especially inland,
will persist through midweek with low clouds in the overnight and
early morning near the coast and in the valleys. An inland warming
trend is then likely late in the week and into the upcoming weekend
as high pressure builds back over the region.

Discussion As of 01:55 pm pdt Monday... Temperatures are
running up to 6 degrees cooler compared to 24 hours ago as low
clouds persist over the region. This is a result of the deep
marine layer holding on strong at more than 2,000 feet in depth.

While low clouds are finally clearing inland and from the south
off of the big sur coast, do expect a return of stratus again
overnight as a mid upper level low sits off of the southern
california coast. Overall, this will bring about temperatures that
are generally below seasonal averages through midweek.

By midweek and into the upcoming weekend high pressure centered over
the four corners region will begin to build toward the california
coast. This will result in a warming trend, especially for inland
areas, with temperatures rebounding back to or slightly above
seasonal averages. Look for more widespread 80s and 90s inland
during the afternoon hours under mostly sunny skies. This building
ridge will likely compress the marine layer as well with less inland
penetration of stratus late in the forecast period. Meanwhile,
coastal areas will likely remain in the 60s to 70s as onshore flow
persists.

Aviation As of 5:05 pm pdt Monday... For 00z tafs. Clearing
continues at the hour with ksts just having cleared over the north
bay. CIGS are anticipated to return early this evening under a
deep 2200 ft marine layer and moderate onshore flow. Also of note
is a line of clouds moving in from the east. Radar depicts a few
showers associated with these clouds however they are quickly
dissipating and not anticipated to bring showers to any terminals
at this time. Winds will remain light to moderate through this
evening then will gradually dissipate overnight.

Vicinity of ksfo...VFR conditions will prevail through early
evening then return around 04z tonight. BorderlineVFR MVFR cigs
expected through tonight with clearing anticipated around 18z
Tuesday morning. Light to moderate west winds will prevail.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR conditions will prevail through
late this afternoon with low clouds anticipated to return around
02z-03z tonight.VFR CIGS expected through tonight with clearing
anticipated around 19z Tuesday morning. Moderate west winds will
ease overnight becoming light.

MVFR ifr through through early afternoon.

There is a distinct chance that mry never breaks today. Sns should
see a bit of clearing by afternoon, but clouds will remain around
the area and come back early this evening.

Marine As of 05:16 pm pdt Monday... Weak low pressure over the
coastal waters will continue to yield light to moderate winds
through midweek. High pressure will develop for the second half of
the week and cause the coastal pressure gradient to tighten. This
is forecast to bring strong to near gale northerly winds and
associated large steep seas. No long period swell is expected for
the next 7 days.

Mtr watches warnings advisories
Tngt Sca... Sf bay until 9 pm
public forecast: rgass
aviation: cw
marine: bam
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 16 mi57 min WNW 6 64°F 1017 hPa
RCMC1 - 9414863 - Richmond, CA 16 mi44 min WNW 2.9 G 8 65°F 65°F1016.1 hPa (-0.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 18 mi44 min SW 13 G 17 67°F 1015.5 hPa (-0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 18 mi44 min SW 11 G 15 66°F 1016.4 hPa (-0.3)
FTPC1 - 9414290 - San Francisco, CA 21 mi44 min W 4.1 G 8.9 62°F 62°F1016.8 hPa (-0.0)
46237 - San Francisco Bar, CA (142) 22 mi44 min 60°F4 ft
PRYC1 - 9415020 - Point Reyes, CA 22 mi44 min ESE 4.1 G 5.1 64°F 62°F1016.3 hPa (-0.5)
PXSC1 23 mi44 min 66°F 59°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 23 mi44 min W 8.9 G 17 64°F 1015.3 hPa (+0.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA 24 mi44 min WNW 11 G 14 63°F 1016.3 hPa (+0.0)
OBXC1 24 mi44 min 64°F 60°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 25 mi44 min W 11 G 13
MZXC1 - 9415102 - Martinez-Amorco CA 25 mi44 min WSW 12 G 16 68°F 69°F1015.8 hPa (-0.0)59°F
AAMC1 - 9414750 - Alameda, CA 27 mi44 min WNW 7 G 11 66°F 69°F1016.7 hPa (+0.0)
LNDC1 27 mi44 min W 6 G 11 65°F 1016.2 hPa (+0.0)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 27 mi54 min SSW 3.9 G 3.9 61°F 62°F4 ft1016.8 hPa (-0.5)
PCOC1 - 9415144 - Port Chicago, CA 29 mi44 min SW 12 G 15 70°F 69°F1015.3 hPa (-0.0)
SFXC1 - San Francisco Bay Reserve, CA 31 mi59 min W 12 73°F 1014 hPa60°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi44 min W 9.9 G 17 72°F 1014.6 hPa (-0.0)
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 39 mi34 min E 3.9 G 5.8 59°F 1016.8 hPa58°F
RTYC1 - 9414523 - Redwood City, CA 46 mi44 min NW 11 G 13 69°F 73°F1015.3 hPa (-0.0)
46214 - Point Reyes, CA (029) 48 mi44 min 61°F6 ft

Wind History for Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA4 mi69 minWSW 1010.00 miFair72°F57°F61%1015.9 hPa
Petaluma Municipal Airport, CA11 mi49 minWNW 7 G 1310.00 miFair70°F59°F69%1016.3 hPa
Napa, Napa County Airport, CA18 mi50 minSSW 1510.00 miFair71°F59°F66%1014.4 hPa

Wind History from DVO (wind in knots)
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G10
CalmSW5NW5W4Calm--CalmN45
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CalmW5SW5SW5SW5W6W5SW6SW6
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1 day agoN10N8N4CalmCalmCalmCalmCalmCalmN5N4N5NE3CalmN4N45
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Calm6W7
G14
NW8NW10NW11NW12
2 days agoN12N12N7NW5CalmN6NW5NW5N6N5N5N5N5CalmCalmN7N8N7N11W8
G25
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Tide / Current Tables for Hog Island, San Antonio Creek, San Pablo Bay, California
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Hog Island
Click for Map
Mon -- 12:59 AM PDT     7.26 feet High Tide
Mon -- 06:21 AM PDT     Moonrise
Mon -- 06:30 AM PDT     Sunrise
Mon -- 08:21 AM PDT     -0.55 feet Low Tide
Mon -- 11:31 AM PDT     New Moon
Mon -- 02:31 PM PDT     5.97 feet High Tide
Mon -- 07:55 PM PDT     Sunset
Mon -- 08:06 PM PDT     Moonset
Mon -- 08:24 PM PDT     1.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.77.36.964.52.81.20-0.5-0.40.51.93.54.95.85.95.34.2321.51.62.64

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Mon -- 12:44 AM PDT     -0.00 knots Slack
Mon -- 04:22 AM PDT     -0.94 knots Max Ebb
Mon -- 06:21 AM PDT     Moonrise
Mon -- 06:30 AM PDT     Sunrise
Mon -- 08:08 AM PDT     0.00 knots Slack
Mon -- 11:04 AM PDT     0.65 knots Max Flood
Mon -- 11:31 AM PDT     New Moon
Mon -- 02:27 PM PDT     -0.00 knots Slack
Mon -- 05:08 PM PDT     -0.54 knots Max Ebb
Mon -- 07:40 PM PDT     0.00 knots Slack
Mon -- 07:54 PM PDT     Sunset
Mon -- 08:05 PM PDT     Moonset
Mon -- 10:10 PM PDT     0.72 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.3-0.1-0.5-0.8-0.9-0.9-0.8-0.5-0.10.30.60.60.60.40.1-0.2-0.4-0.5-0.5-0.20.10.50.70.7

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 (21,6,7,8)
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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.