Monday, December10, 2018 L-36.com


Marine Weather and Tides
Montalvin Manor, 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 7:13AMSunset 4:51PM Monday December 10, 2018 5:26 AM PST (13:26 UTC) Moonrise 9:58AMMoonset 8:01PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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- 251 Am Pst Mon Dec 10 2018
Today..NE winds 5 to 10 kt...becoming W this afternoon. Scattered showers this morning.
Tonight..NW winds 5 to 10 kt.
Tue..W winds up to 10 kt.
Tue night..NW winds 5 to 15 kt.
Wed..E winds 5 to 10 kt.
Wed night..SE winds 5 to 10 kt.
Thu..E winds around 5 kt.
Fri..SW winds up to 10 kt. A chance of rain.
PZZ500 251 Am Pst Mon Dec 10 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A cold front will gradually pass over the waters through the morning and afternoon hours, and bring with it a chance of light rain showers. Northwest winds will increase in the wake of the frontal passage then diminish on Wednesday. Moderate northwest swell will continue before a larger northwest swell arrives towards the end of week.


7 Day Forecast for Marine Location Near Montalvin Manor, CA
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location: 38.06, -122.39     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 101200
afdmtr
area forecast discussion
national weather service san francisco bay area
400 am pst Mon dec 10 2018

Synopsis A weak front will bring isolated light showers to
santa cruz county and areas north through early this afternoon.

Another weak system may bring a few showers to our northern areas
late Tuesday night into early Wednesday. However, most areas will
remain dry and cool through Thursday. A better chance of
widespread rain will develop late in the work week and for the
weekend.

Discussion As of 03:30 am pst Monday... Water vapor imagery
continues to show a trough of low pressure moving into the west
coast this morning, with the associated weak cold front draping
across northern california at this time. Radar imagery shows a
line of light rain showers extending from chico back through santa
rosa to point reyes and beyond. So far, rainfall totals have been
less than impressive with only a hundredth or two tipping the
bucket. Models continue to indicate that this line of showers will
fall apart as it sags southward this morning, so not expecting
more than a few hundredths at best, with any showers likely
limited to santa cruz county and areas northward. However, there
may be enough moisture to wet the roads for the morning commute.

A transitory ridge on Tuesday will give way to another weak
disturbance on Tuesday night and early Wednesday. At this point it
time, it appears that it will only bring a few light showers at
best to our far northern counties late Tuesday night and Wednesday
morning. High pressure will then build back across the region for
Wednesday and Thursday, with weak offshore flow and warmer
conditions developing.

Another system will then take aim at northern california for
Friday. This system looks relatively weak as well, but northern
areas should see some light rain once again. Models are hinting
that this system will open the door for a potentially deeper and
wetter disturbance for Sunday into Monday. At this point in time,
this system looks like the region's best chance of widespread
rain, but considering it falls in the day 7 and 8 timeframes,
confidence is still somewhat low on the actual strength.

Therefore, will need to continue to monitor the model trends over
the next several days. Palmer

Aviation As of 4:00 am pst Monday... For 12z tafs. A mixed bag
for aviation this morning with the TAF sites ranging anywhere
fromVFR to lifr conditions as of the 12z TAF publication time. A
weak cold front is gradually approaching the area and has brought
with it plenty of bkn ovc mid high clouds that are blanketing much
of the region. These high clouds present a challenge as it makes
it difficult to use satellite in order to discern the cloud fog
coverage near the surface. This front will also bring a slight
chance of rain showers to the area, mainly from sjc and points
north. Expect at least sct bkn clouds throughout much of the day
given the approaching front and the present environment. Overall
low medium confidence.

Vicinity of ksfo... Very challenging forecast, especially in the
short-term with the present low clouds over the terminal and the
approaching front. Webcams and satellite are not too helpful right
now given the time of night and also because the high clouds
obscuring the low clouds. Nearby half moon bay and san carlos have
been bouncing back and forth between ifr andVFR ceilings, and
across the bay in oakland ceilings have not been a issue. With all
that said, there is rather low confidence on how long these low
ceilings will exactly stay over the terminal. As the front
arrives after sunrise, the chance of light rain showers will
increase. Winds are forecast to remain fairly light through the
day, even after the frontal passage.

Sfo bridge approach... As mentioned in the vicinity of the terminal
section, it's a challenging forecast in the short-term with the
high clouds obscuring the view near the surface. San carlos and
moffett field are reportingVFR conditions, so think as of the 12z
taf issuance time the low clouds are primarily confined to near
the terminal.

Monterey bay terminals...VFR conditions are generally expected to
prevail at both sns and mry. An approaching front may bring about
a brief period of MVFR ceilings by the late morning or early
afternoon.

Marine As of 03:34 am pst Monday... A cold front will gradually
pass over the waters through the morning and afternoon hours, and
bring with it a chance of light rain showers. Northwest winds
will increase in the wake of the frontal passage then diminish on
Wednesday. Moderate northwest swell will continue before a larger
northwest swell arrives towards the end of week.

Mtr watches warnings advisories
Tday Sca... Pigeon pt to pt pinos 0-10 nm from 1 pm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pt pinos to pt piedras blancas 0-10 nm from 9 am
sca... Pigeon pt to pt piedras blancas 10-60 nm from 9 am
sca... Pt arena to pt reyes 0-10 nm from 1 pm
sca... Pt reyes to pigeon pt 0-10 nm from 1 pm
sca... Rough bar advisory for sf bar
public forecast: palmer
aviation: rowe
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 7 mi38 min E 7 G 8.9 48°F 1023.4 hPa
RCMC1 - 9414863 - Richmond, CA 10 mi38 min 55°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi38 min NNW 7 G 8.9 50°F 1023.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi45 min NNW 7 49°F 1024 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 14 mi38 min E 2.9 G 5.1 48°F 53°F1023.9 hPa48°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 17 mi38 min SE 1 G 2.9 49°F 1023.3 hPa
PXSC1 18 mi38 min 51°F 50°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 18 mi38 min NNW 8 G 9.9 49°F 1022.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi38 min ESE 4.1 G 4.1
FTPC1 - 9414290 - San Francisco, CA 18 mi44 min N 11 G 12 50°F 56°F1023.6 hPa
OBXC1 18 mi38 min 50°F 49°F
LNDC1 19 mi38 min ESE 1.9 G 1.9 49°F 1023.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 19 mi38 min NE 6 G 6 47°F 53°F1023.9 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi44 min ESE 2.9 G 4.1 49°F 55°F1023.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 22 mi101 min E 5.1 45°F 1024 hPa44°F
46237 - San Francisco Bar, CA (142) 23 mi56 min 56°F7 ft
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 27 mi38 min S 2.9 G 2.9 49°F 1023.9 hPa
PRYC1 - 9415020 - Point Reyes, CA 31 mi38 min NNE 5.1 G 6 56°F1022.6 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 32 mi36 min N 3.9 G 5.8 55°F 57°F7 ft1023.2 hPa
RTYC1 - 9414523 - Redwood City, CA 39 mi38 min NW 2.9 G 4.1 48°F 56°F1023.7 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA11 mi31 minN 03.00 miFog/Mist48°F48°F100%1024 hPa
Napa, Napa County Airport, CA12 mi32 minENE 35.00 miLight Rain Fog/Mist49°F45°F86%1022.9 hPa
Petaluma Municipal Airport, CA18 mi31 minN 03.00 miFog/Mist48°F48°F100%1023.7 hPa
Concord, Buchanan Field, CA19 mi33 minN 04.00 miFog/Mist48°F44°F86%1022.5 hPa

Wind History from DVO (wind in knots)
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Last 24hrSE4S4SE4SE4Calm6SE4Calm3SE4SE3S5CalmS5SW3CalmCalmCalmCalmS3S3S4CalmCalm
1 day agoCalmCalmS4CalmCalmS6SE4S64SE4S6S5S5SW4SW3S34S5S5SW4S5S5SE5SE5
2 days agoCalmCalmCalmCalmCalmCalmSE4SE7SE5SE4SE4CalmS3CalmSW4CalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Pinole Point, San Pablo Bay, California
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Pinole Point
Click for Map
Mon -- 03:31 AM PST     4.94 feet High Tide
Mon -- 07:14 AM PST     Sunrise
Mon -- 08:17 AM PST     2.91 feet Low Tide
Mon -- 09:57 AM PST     Moonrise
Mon -- 01:47 PM PST     5.84 feet High Tide
Mon -- 04:49 PM PST     Sunset
Mon -- 08:01 PM PST     Moonset
Mon -- 08:53 PM PST     -0.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.43.54.44.94.94.53.83.22.933.54.35.15.75.85.54.63.31.90.7-0.1-0.300.8

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Mon -- 12:34 AM PST     0.60 knots Max Flood
Mon -- 04:11 AM PST     -0.00 knots Slack
Mon -- 06:14 AM PST     -0.31 knots Max Ebb
Mon -- 07:15 AM PST     Sunrise
Mon -- 08:32 AM PST     0.00 knots Slack
Mon -- 09:58 AM PST     Moonrise
Mon -- 10:56 AM PST     0.58 knots Max Flood
Mon -- 02:06 PM PST     -0.00 knots Slack
Mon -- 04:49 PM PST     Sunset
Mon -- 05:39 PM PST     -0.90 knots Max Ebb
Mon -- 08:01 PM PST     Moonset
Mon -- 10:05 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.50.30-0.2-0.3-0.3-0.10.20.50.60.50.30-0.3-0.7-0.9-0.9-0.8-0.6-0.4-00.3

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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Wind Forecast for San Francisco/Monterey Bay Area, CA (8,2,3,4)
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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.