Monday, April23, 2018 L-36.com


Marine Weather and Tides
Rutherford, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:19AMSunset 7:55PM Monday April 23, 2018 2:40 AM PDT (09:40 UTC) Moonrise 12:22PMMoonset 1:51AM Illumination 56% Phase: First Quarter Moon; Moon at 8 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 902 Pm Pdt Sun Apr 22 2018
Tonight..NW winds 5 to 15 kt.
Mon..NW winds 5 kt...becoming W 5 to 15 kt in the afternoon.
Mon night..NW winds 5 to 15 kt.
Tue..NW winds 5 to 15 kt.
Tue night..NW winds 5 to 15 kt.
Wed..NW winds 15 to 25 kt...becoming sw 10 kt.
Thu..W winds 10 kt.
Fri..SW winds 5 to 15 kt.
PZZ500 902 Pm Pdt Sun Apr 22 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure over the eastern pacific will maintain moderate northwesterly winds across the northern waters through late tonight. Winds will ease across the region as the pressure gradient weakens through much of the week. Light to moderate seas will prevail through the forecast period.

7 Day Forecast for Marine Location Near Rutherford, CA
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location: 38.5, -122.39     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 230633
afdmtr
area forecast discussion
national weather service san francisco bay area
1133 pm pdt Sun apr 22 2018

Synopsis Dry and seasonable weather for much of the upcoming
work week. An upper low may approach Friday with a slight chance
of showers, mainly for the north bay but most likely scenario is
all locations stay dry with a modest cooling trend by late in the
week into next weekend.

Discussion As of 8:37 pm pdt Sunday... Temperatures are settling
back nicely this evening under a mainly clear sky, wrapping up a
weekend of mainly clear, mild to warm daytime weather. High pressure
remains in place keeping dry weather and warmer daytime temperatures
going through mid week. The 250 mb jet stream over the eastern pacific
will carve out a closed mid to upper level low pressure system
later this week. Today's 12z ECMWF showed additional jet stream
energy carving out another mid to upper level low farther upstream
over the pacific eventually being the "kicker trough" that moves
the first closed low forward to northern california and the
pacific northwest bringing a slight chance of showers into the bay
area later Friday night into Saturday. However, GFS output is at
odds with the ECMWF solution generally showing higher latitude
northwesterly flow and shortwave energy pouring in bringing a few
more chances of rain into early next week. Either way it looks
like some unsettled, chilly, wetter weather arriving late week and
early next week. The ECMWF solution, if verified, could tap more
in the way of subtropical moisture.

Prev discussion As of 2:05 pm pdt Sunday... Skies are mostly sunny
this Sunday afternoon with just some thin high clouds over the
region. Temperatures range from around 60 at the beaches, 60s
around the bay and mid 70s inland with lower 80s showing up
around stockton. Current dewpoint readings in the mid 50s along
with a strong northerly gradient of nearly 6 mb. This should keep
skies mostly clear with overnight lows from the mid 40s to lower
50s most locations.

Synoptic pattern doesnt change too much through midweek so that
should give us afternoon highs generally in the 70s inland with
60s near the coast. No extreme heat, precip or cold weather under
this pattern.

Next feature we'll be tracking is a cut-off type low coming in
from the west. At the very least onshore flow will increase by
midweek into Thursday with airmass cooling aloft. This should lead
to subtle cooling by Thursday and Friday.

General model trend has been to bring the upper low onshore north
of the golden gate later Friday into Saturday. Right now precip
chances look slight meager at best. However, decided to just keep
the slight chances in the forecast as we'll likely see forecast
simulations oscillate over the next few days. Either way there
does remain a slight chance of showers late in the week. Upper low
should eject inland by next Saturday or Sunday with dry and warm
weather on the backside of that. Spring appears to be here with
dry weather, cut-off lows and no storms of note in sight.

Aviation As of 10:51 pm pdt Sunday... For 06z tafs... High
clouds will continue to steam across the region tonight with patchy
fog possible Monday morning in the vicinity of the monterey bay.

Light winds forecast through tonight with a slight seabreeze
kicking in Monday afternoon.

Vicinity of ksfo...VFR conditions will prevail through the period
with mainly high clouds. Moderate onshore flow of 10 to 15 kt
will ease becoming light overnight into Monday morning. Moderate
onshore flow will increase to around 10 to 20 kt after 21z Monday
afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR conditions with mainly high clouds
will prevail through late tonight. Ifr lifr CIGS will return
overnight into Monday morning with clearing anticipated around 19z
Monday. Light and variable winds forecast overnight into Monday
morning with moderate onshore flow in the 10 to 15 kt range
anticipated in the afternoon.

Marine As of 9:00 pm pdt Sunday... High pressure over the
eastern pacific will maintain moderate northwesterly winds across
the northern waters through late tonight. Winds will ease across
the region as the pressure gradient weakens through much of the
week. Light to moderate seas will prevail through the forecast
period.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm until 3 am
public forecast: canepa rww
aviation marine: cw
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 28 mi56 min WNW 4.1 56°F 1013 hPa53°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi41 min NE 1.9 G 2.9 58°F 1013.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 35 mi41 min W 8 G 8.9 59°F 61°F1013.5 hPa (+0.3)59°F
PCOC1 - 9415144 - Port Chicago, CA 36 mi41 min SW 6 G 7 60°F 62°F1013.2 hPa (+0.3)
RCMC1 - 9414863 - Richmond, CA 40 mi41 min S 5.1 G 7 56°F 57°F1013.5 hPa (+0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 41 mi41 min NW 2.9 G 5.1 63°F 1012.7 hPa (+0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 41 mi41 min SSW 8 G 12 55°F 1014.1 hPa (+0.0)
PRYC1 - 9415020 - Point Reyes, CA 47 mi41 min Calm G 1 51°F1013.7 hPa (+0.0)
PXSC1 48 mi41 min 56°F 50°F
FTPC1 - 9414290 - San Francisco, CA 48 mi41 min WSW 5.1 G 8 52°F 55°F1014.3 hPa (+0.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 48 mi41 min W 2.9 G 2.9
OBXC1 48 mi41 min 56°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 48 mi41 min WNW 4.1 G 5.1 55°F 1013.9 hPa (+0.0)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 49 mi41 min W 2.9 G 5.1 55°F 1013 hPa (+0.0)
LNDC1 49 mi41 min NNW 2.9 G 4.1 57°F 1013.8 hPa (+0.0)

Wind History for Martinez-Amorco Pier, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petaluma Municipal Airport, CA20 mi66 minN 010.00 miPartly Cloudy48°F48°F100%1013.9 hPa
Napa, Napa County Airport, CA21 mi47 minN 09.00 miFair0°F0°F%1013.1 hPa
Santa Rosa, Santa Rosa Sonoma County Airport, CA22 mi48 minN 08.00 miFair53°F50°F89%1012.6 hPa
Vacaville Nut Tree Airport, CA24 mi48 minN 010.00 miFair55°F52°F90%1013.4 hPa

Wind History from O69 (wind in knots)
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Last 24hrCalmCalmE3CalmCalmCalmCalmE3CalmCalmNW3NW3NW6NW5
G10
NW64NW6W6NW3CalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3CalmNW4W1066
G14
NW4NW3NW3NW3CalmCalmCalmCalmCalm
2 days agoN3CalmCalmCalmCalmCalmCalmCalm4NW5W9NW7
G13
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G11
W8W7NW5CalmNW3CalmNW3N3CalmCalm

Tide / Current Tables for Napa, Napa River, Carquinez Strait, California
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Napa
Click for Map
Mon -- 02:49 AM PDT     Moonset
Mon -- 03:15 AM PDT     2.66 feet Low Tide
Mon -- 06:22 AM PDT     Sunrise
Mon -- 08:22 AM PDT     6.52 feet High Tide
Mon -- 01:22 PM PDT     Moonrise
Mon -- 03:48 PM PDT     -0.30 feet Low Tide
Mon -- 07:53 PM PDT     Sunset
Mon -- 10:40 PM PDT     6.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.73.832.72.83.64.75.86.56.45.84.73.31.80.6-0.1-0.30.21.22.545.36.26.3

Tide / Current Tables for Napa, Napa River, California
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Napa
Click for Map
Mon -- 02:49 AM PDT     Moonset
Mon -- 02:59 AM PDT     2.38 feet Low Tide
Mon -- 06:22 AM PDT     Sunrise
Mon -- 08:11 AM PDT     6.23 feet High Tide
Mon -- 01:22 PM PDT     Moonrise
Mon -- 03:33 PM PDT     -0.27 feet Low Tide
Mon -- 07:53 PM PDT     Sunset
Mon -- 10:29 PM PDT     6.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.23.32.62.42.73.64.75.76.26.15.44.22.81.40.4-0.2-0.20.41.42.74.15.25.95.9

Weather Map and Satellite Images
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wmap_P
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 (5,6,7,8)
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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.