Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Novato, 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 7:29PM Saturday March 25, 2017 10:30 PM PDT (05:30 UTC) Moonrise 4:46AMMoonset 4:05PM Illumination 2% 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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PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 835 Pm Pdt Sat Mar 25 2017
Tonight..W winds 5 to 15 kt.
Sun..S winds 5 to 15 kt. Slight chance of rain in the morning, then chance of rain in the afternoon.
Sun night..W winds 5 to 15 kt. Rain likely in the evening, then chance of showers after midnight.
Mon..NW winds 10 to 20 kt. Slight chance of showers in the morning.
Mon night..NW winds 10 to 20 kt.
Tue..NW winds 10 to 20 kt.
Wed..SW winds 10 kt.
Thu..NW winds 5 to 15 kt.
PZZ500 835 Pm 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... Generally light winds and moderate seas across the waters through tonight. Gusty winds along the inner waters south of pt sur will diminish through tonight. On Sunday, winds over the waters will increase and turn southerly as a weak cold front approaches.

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 260357
afdmtr
area forecast discussion
national weather service san francisco bay area
857 pm pdt Sat mar 25 2017

Synopsis Partly cloudy and dry through midday Sunday. The next
weak cold front moves into the north bay Sunday afternoon with
light rain spreading southward through the remainder of the bay
area and central coast Sunday evening before ending by sunrise
Monday morning. Cool and breezy Monday afternoon, then high
pressure builds with a warming and drying trend through midweek.

Likely cooler again later in the week with breezy conditions.

Discussion As of 8:55 pm pdt Saturday... Saturday was a dry day
in between weather systems. Afternoon highs were mostly in the
lower to mid 60s and generally a degree or two cooler than normal.

Evening satellite imagery shows a storm system offshore to the
west of the pacific northwest and far northern california. This
system currently has a pretty good moisture tap with precipitable
water values up near 1.5 inches. The models agree that most of
the moisture and energy with this system will move inland to our
north on Sunday. However, a shortwave trough currently seen on
water vapor satellite imagery out near 45n/155w is forecast to
track to the ese and drive the tail end of a cold front through
our area Sunday afternoon and evening. There is generally good
model agreement both in terms of precipitation timing and
rainfall amounts with this system. Rain is expected to begin
pushing into northwest sonoma county by midday Sunday and then
across the rest of the north bay during the afternoon hours. Rain
will then spread across the rest of the sf bay area and monterey
bay area late Sunday afternoon and evening. Rainfall amounts are
forecast to range form 0.10 to 0.50" in the north bay, with
amounts of less than a tenth of an inch expected for areas south
and east of the golden gate.

Showers will taper off Sunday night with only a few showers
possibly lingering into Monday morning. Otherwise, Monday is
forecast to be a dry day, with brisk northwest winds expected
during the afternoon and evening, particularly near the coast.

Tuesday and Wednesday are forecast to be dry with a warming trend
as an upper level ridge builds over california. By Wednesday high
temperatures are expected to be mostly in the upper 60s and 70s.

Both the GFS and ECMWF are indicating that an inside slider will
sweep across northeast california late Wednesday night and
Thursday. The 18z gfs, and most 12z GFS ensemble members, track
this system too far to our north and east to generate
precipitation in our area. But the 12z ECMWF has a more westerly
trajectory and develops light rain across northern and eastern
portions of our area on Thursday. Both model solutions would
result in cooler and blustery conditions by late Thursday with
locally strong north to northwest winds.

Aviation As of 7:04 pm pdt Saturday... Marked drying noted in 24
hours trends as dewpoint temperatures lower indicating less surface
based water vapor in the atmosphere. Winds will remain onshore
through tonight the pressure gradient then tending to become more
neutral sfo-sac on Sunday. Moderate to high confidenceVFR
forecast except local MVFR CIGS possible Sunday morning. Light
rain with next weather system reaches the north bay beginning late
Sunday morning.

Vicinity of ksfo...VFR. Tempo MVFR cig 11z-15z Sunday.

Sfo bridge approach... Same as ksfo.

Monterey bay terminals...VFR. Onshore winds becoming light and variable
late tonight then southerly on Sunday.

Marine As of 02:31 pm pdt Saturday... Generally light winds and
moderate seas across the waters through tonight. Winds south of
pt sur and over northern monterey bay are expected to strengthen
throughout the day. On Sunday, winds over the northern waters will
increase and turn southerly as a weak cold front approaches.

Mtr watches/warnings/advisories
Tngt Sca... Pt pinos to pt piedras blancas 0-10 nm until 2 am
public forecast: dykema
aviation: canepa
marine: anna
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 16 mi48 min NW 7 G 9.9 54°F 58°F1020.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 18 mi42 min NW 5.1 G 8 55°F 1020.9 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 18 mi42 min W 9.9 G 13 55°F 1020.2 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi48 min WSW 4.1 G 7 54°F 56°F1021 hPa
46237 - San Francisco Bar, CA (142) 22 mi60 min 56°F9 ft
PXSC1 23 mi42 min 54°F 48°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 24 mi42 min WNW 9.9 G 12 54°F 1020.7 hPa
OBXC1 24 mi48 min 54°F 48°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 25 mi48 min W 12 G 15
UPBC1 25 mi42 min W 16 G 18
MZXC1 - 9415102 - Martinez-Amorco CA 25 mi42 min W 12 G 14 54°F 58°F1020.4 hPa51°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 27 mi40 min NW 12 G 16 54°F 56°F9 ft1020.8 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 27 mi42 min 60°F1021.1 hPa
LNDC1 27 mi42 min WNW 5.1 G 8 55°F 1020.7 hPa
PCOC1 - 9415144 - Port Chicago, CA 29 mi42 min SW 7 G 9.9 53°F 57°F1020.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 31 mi105 min NW 9.9 53°F 1019 hPa48°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi42 min W 9.9 G 13 55°F 1020.1 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 39 mi30 min NW 12 G 14 54°F 55°F1020.8 hPa (-0.4)47°F
RTYC1 - 9414523 - Redwood City, CA 46 mi42 min W 6 G 8.9 53°F 60°F1020.4 hPa
46214 - Point Reyes, CA (029) 48 mi38 min 56°F12 ft

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA4 mi55 minESE 710.00 miFair54°F46°F77%1020.7 hPa
Petaluma Municipal Airport, CA11 mi35 minN 310.00 miOvercast46°F46°F100%1021 hPa
Napa, Napa County Airport, CA18 mi36 minW 1010.00 miPartly Cloudy54°F48°F80%1019.1 hPa

Wind History from DVO (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmN5
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N7CalmN5CalmCalmCalm6SW5W4NW9W5
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1 day agoCalmSE4SE3S6SE5SE10SE7SE12SE10SE6
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SE7S9SW8SW13SW83SW6S7SW4CalmCalmCalm
2 days agoW10NW8
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N5NE6CalmCalmCalmCalmCalmNW946
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CalmCalmCalmSE4Calm

Tide / Current Tables for Hog Island, San Antonio Creek, San Pablo Bay, California
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Hog Island
Click for Map
Sun -- 01:13 AM PDT     5.59 feet High Tide
Sun -- 06:23 AM PDT     Moonrise
Sun -- 07:03 AM PDT     Sunrise
Sun -- 07:32 AM PDT     1.09 feet Low Tide
Sun -- 12:57 PM PDT     6.07 feet High Tide
Sun -- 06:10 PM PDT     Moonset
Sun -- 07:28 PM PDT     Sunset
Sun -- 07:50 PM PDT     0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
55.65.44.83.72.61.71.21.21.93.24.55.66.15.84.93.62.210.200.61.83.2

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Sun -- 12:57 AM PDT     -0.00 knots Slack
Sun -- 03:47 AM PDT     -0.62 knots Max Ebb
Sun -- 06:23 AM PDT     Moonrise
Sun -- 06:53 AM PDT     0.00 knots Slack
Sun -- 07:03 AM PDT     Sunrise
Sun -- 09:18 AM PDT     0.65 knots Max Flood
Sun -- 12:41 PM PDT     -0.00 knots Slack
Sun -- 03:40 PM PDT     -0.79 knots Max Ebb
Sun -- 06:10 PM PDT     Moonset
Sun -- 07:18 PM PDT     0.01 knots Slack
Sun -- 07:27 PM PDT     Sunset
Sun -- 09:47 PM PDT     0.69 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.3-0-0.4-0.6-0.6-0.5-0.300.40.60.60.50.2-0.1-0.5-0.7-0.8-0.7-0.5-0.10.30.60.70.6

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 (1,6,7,8)
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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.