Wednesday, November14, 2018 L-36.com


Marine Weather and Tides
Walnut Creek, 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 6:47AMSunset 4:58PM Wednesday November 14, 2018 7:05 AM PST (15:05 UTC) Moonrise 12:39PMMoonset 11:05PM Illumination 40% Phase: Waxing Crescent; Moon at 6 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- 249 Am Pst Wed Nov 14 2018
Today..NE winds up to 10 kt...becoming W this afternoon. Hazy and patchy smoke.
Tonight..SW winds up to 10 kt. Hazy and patchy smoke.
Thu..NE winds up to 10 kt. Hazy and patchy smoke.
Thu night..NW winds up to 10 kt.
Fri..NE winds up to 10 kt.
Fri night..SW winds 5 to 10 kt.
Sat..SW winds around 5 kt.
Sun..W winds around 5 kt.
PZZ500 249 Am Pst Wed Nov 14 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light northerly winds are forecast to prevail over the coastal waters today as high pressure remains over the eastern pacific. Light mixed swell will continue today before a northwest swell arrives on Thursday. A change in the pattern has the potential to bring cooler temperatures and the possibly of light rain to the waters by the middle of next week.


7 Day Forecast for Marine Location Near Walnut Creek, CA
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location: 37.9, -122.05     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 141142
afdmtr
area forecast discussion
national weather service san francisco bay area
342 am pst Wed nov 14 2018

Synopsis Smoke over the region will continue to result in poor
air quality through the work week with dry conditions and light
offshore winds. Seasonably mild, dry conditions will then persist
through the upcoming weekend. A pattern change will potentially
bring rainfall to the region around thanksgiving.

Discussion As of 03:41 am pst Wednesday... Not expecting much
change in the overall forecast through late in the week as the
synoptic pattern continues to feature an amplified upper level
ridge overhead and a weak trough pushing inland across british
columbia. This trough well to our north will advect another round
of high level clouds across the region during the next 24 to 36
hours which will help hold temperatures down slightly. Near
surface smoke from the camp fire will also continue to impact the
region and produce poor air quality, especially the san francisco
bay area through late week. This is as weak offshore flow
continues region-wide which is also maintaining critically dry
weather conditions. Thus, near-critical fire weather conditions
will persist at least for another day or two.

The ridge aloft is forecast to weaken slightly this weekend as a
closed upper level low develops over the eastern pacific and
approaches southern california. This should allow for slightly
cooler daytime temperatures with light onshore flow developing at
times. This pattern will also bring a slight increase in low level
moisture lessening fire weather concerns and potentially
resulting in improved air quality.

The main focus then turns toward a likely pattern change during
the second half of next week which could potentially bring
precipitation to the region. Medium range models generally agree
that a long-wave trough will develop over the eastern pacific and
approach the west coast during the middle of next week. However,
confidence in the details remains low at this time on the track
and strength of embedded short-wave disturbances as they approach
the coast. The ECMWF has backed on precipitation for our region
during the latter half of the week while the GFS and canadian
models have trended wetter from Wednesday into thanksgiving day.

Regardless, look for cooler conditions, increase in surface
moisture and potential for unsettled conditions late in the
forecast period.

Aviation As of 3:36 am pst Wednesday... For 12z tafs. Aviation
impacts over the next 24 to 30 hours will continue to be limited
visibilities -- both surface and slant range -- as a result of the
smoke from the camp fire in butte county. Latest experimental,
high-resolution smoke models keep smoke over much of the region
again today. Surface visibilities are generally expected to remain
in the 4 to 6 mile range; however, can't rule out periods with
visibilities dropping to ifr levels. Only moisture clouds to speak
of today will be periodic passing high clouds.

Vicinity of ksfo... Generally expect MVFR conditions to prevail
today as a consequence of the smoke-related visibility
limitations. Light variable winds this morning are expected to
become west to northwest in the afternoon hours around 10 kt.

Sfo bridge approach... Slant range visibilities are expected to be
impacted along the approach due to smoke. Otherwise, similar to
ksfo.

Monterey bay terminals...VFR MVFR visibilities expected today as
smoke impacts both sns and mry. Easterly winds in the morning will
become onshore in the afternoon.

Marine As of 03:41 am pst Wednesday... Generally light
northerly winds are forecast to prevail over the coastal waters
today as high pressure remains over the eastern pacific. Light
mixed swell will continue today before a northwest swell arrives
on Thursday. A change in the pattern has the potential to bring
cooler temperatures and the possibly of light rain to the waters
by the middle of next week.

Mtr watches warnings advisories
Tday None.

Public forecast: rgass
aviation: rowe
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MZXC1 - 9415102 - Martinez-Amorco CA 10 mi173 min SE 2.9 G 2.9 45°F 58°F1028.4 hPa37°F
PCOC1 - 9415144 - Port Chicago, CA 11 mi173 min SSE 5.1 G 5.1 43°F 58°F1028.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 13 mi167 min W 1.9 G 4.1 44°F 1028.3 hPa
LNDC1 14 mi167 min W 1.9 G 2.9 50°F 1027.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi173 min NNW 2.9 G 4.1
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi167 min N 5.1 G 6 52°F 1027.7 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi173 min NW 1 G 1.9 50°F 58°F1027.9 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 16 mi167 min E 8 G 9.9 51°F 1027.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi167 min NNW 13 G 15 51°F 1027.9 hPa
OBXC1 17 mi167 min 52°F 41°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 19 mi173 min NW 5.1 G 8.9 53°F 1026.7 hPa
RCMC1 - 9414863 - Richmond, CA 19 mi167 min 58°F
PXSC1 20 mi173 min 54°F 43°F
FTPC1 - 9414290 - San Francisco, CA 23 mi173 min NE 7 G 8.9 54°F 57°F1027.8 hPa
RTYC1 - 9414523 - Redwood City, CA 28 mi173 min ESE 2.9 G 2.9 45°F 59°F1028.3 hPa
46237 - San Francisco Bar, CA (142) 32 mi185 min 55°F3 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 43 mi25 min E 12 G 14 55°F 54°F1027.5 hPa

Wind History for Union Pacific Rail Road Bridge (UPRR), CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA6 mi12 minno data4.00 miFair with Haze35°F27°F72%1027 hPa
Oakland, Metro Oakland International Airport, CA16 mi12 minE 33.00 miA Few Clouds with Haze45°F35°F68%1028.1 hPa
Hayward, Hayward Air Terminal, CA17 mi11 minN 04.00 miHaze Smoke44°F28°F53%1028.8 hPa
Livermore, Livermore Municipal Airport, CA18 mi12 minENE 44.00 miHaze Smoke36°F26°F67%1028.1 hPa

Wind History from CCR (wind in knots)
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Last 24hr--Calm--Calm4--------NE5CalmCalmCalmSE3CalmSE4SE3CalmS3SE3CalmSE3----
1 day ago------CalmE7NE7N54N5NE3CalmCalmCalmCalm--CalmS4--------------
2 days ago------E8NE7
G14
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NE10
G19
E10
G16
5E3----------------------------

Tide / Current Tables for Suisun Point, Carquinez Strait, California
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Suisun Point
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Wed -- 12:29 AM PST     0.02 feet Low Tide
Wed -- 06:48 AM PST     Sunrise
Wed -- 07:31 AM PST     4.04 feet High Tide
Wed -- 12:27 PM PST     2.16 feet Low Tide
Wed -- 12:39 PM PST     Moonrise
Wed -- 04:57 PM PST     Sunset
Wed -- 05:26 PM PST     4.01 feet High Tide
Wed -- 11:05 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.51.22.12.93.6443.632.52.22.22.63.13.7443.73.12.41.50.9

Tide / Current Tables for Stake Point .9 Mi NNW, Suisun Bay, California Current
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Stake Point .9 Mi NNW
Click for Map
Wed -- 02:48 AM PST     0.00 knots Slack
Wed -- 06:47 AM PST     Sunrise
Wed -- 07:07 AM PST     0.81 knots Max Flood
Wed -- 10:09 AM PST     -0.00 knots Slack
Wed -- 12:34 PM PST     -0.37 knots Max Ebb
Wed -- 12:39 PM PST     Moonrise
Wed -- 02:41 PM PST     0.00 knots Slack
Wed -- 04:56 PM PST     Sunset
Wed -- 05:44 PM PST     0.55 knots Max Flood
Wed -- 08:19 PM PST     -0.00 knots Slack
Wed -- 11:05 PM PST     Moonset
Wed -- 11:51 PM PST     -0.74 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.6-0.30.10.40.60.70.80.70.40.1-0.2-0.3-0.4-0.20.10.40.50.50.40.1-0.2-0.5-0.7

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 (10,2,3,4)
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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.