Monday, November19, 2018 L-36.com


Marine Weather and Tides
Hayward, 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 6:52AMSunset 4:55PM Monday November 19, 2018 8:13 AM PST (16:13 UTC) Moonrise 3:16PMMoonset 2:57AM Illumination 88% Phase: Waxing Gibbous; Moon at 12 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- 212 Am Pst Mon Nov 19 2018
.small craft advisory in effect from late Tuesday night through Wednesday afternoon...
Today..E winds 5 to 15 kt with gusts up to 25 kt... Diminishing to up to 10 kt this afternoon. Hazy and patchy smoke.
Tonight..NW winds up to 10 kt. Hazy and patchy smoke.
Tue..SW winds 5 to 15 kt.
Tue night..SW winds 5 to 15 kt. A chance of rain.
Wed..SE winds 10 to 20 kt with gusts up to 25 kt. Rain.
Wed night..S winds 10 to 20 kt with gusts up to 30 kt. Showers.
Thanksgiving day..SW winds 5 to 15 kt. Showers.
Fri..SW winds 5 to 10 kt. A chance of showers.
PZZ500 212 Am Pst Mon Nov 19 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds will continue into Tuesday before southerly winds increase ahead of an approaching front. Southerly winds will increase Tuesday night into Wednesday with gale force gusts possible, especially along the immediate coast from pigeon point to point piedras blancas. There will also be a slight chance of Thunderstorms across the waters Wednesday morning through the evening. Winds will diminish and gradually transition out of the northwest on thanksgiving. Light mixed swell will continue through mid-week before a larger northwest swell arrives late this week followed by another storm system.


7 Day Forecast for Marine Location Near Hayward, CA
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location: 37.62, -122.15     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 191129
afdmtr
area forecast discussion
national weather service san francisco bay area
329 am pst Mon nov 19 2018

Synopsis Dry, stagnant, hazy, and lingering smoke will
continue today as high pressure gradually moves east.

A pattern change will develop by late Tuesday and widespread
rainfall is likely early Wednesday, with showers possibly
lingering through Wednesday night. A second system will likely
bring additional rainfall to the area from Thursday evening
through Friday. Forecast models are trending drier for next
weekend, but there is still a chance for shower activity then.

Discussion As of 3:15 am pst Monday... Similar theme to the
forecast 24 hours ago - short term impacts will be smoke related
and then pattern change with rain by Wednesday.

The longwave pattern continues to show an upper level ridge over
norcal into the pacnw as an upper low begins to undercut the ridge
to the south. Weak surface gradients from n-s and w-e combined
with weak offshore flow has kept smoke haze around the bay area
overnight. Latest observations show visibilities hovering in the
2-4 miles with a mixed bag of smoke and or haze. A few sites are
reporting some patchy fog, but haze and smoke are more likely.

Additionally, a quick look at air quality stations continue to
show moderate to unhealthy air quality. There is likely some low
stratus off the coast, but it's hard to see underneath the higher
cirrus streaming in from the south. For today and Tuesday,
similar to Sunday with hazy smoky conditions lingering.

Temperatures will be somewhat mild (60s and 70s) with filtered
sunshine due to haze smoke and high level clouds.

Southerly flow will increase Tuesday and Tuesday night as a cold
front approaches the bay area. This initially uptick in wind may
be enough to help improve some of the air quality around the bay
area pushing lingering smoke haze northward.

As mentioned on the previous discussion the timing of the
approaching cold front has slowed a little bit, but still expect
rain to develop late Tuesday night. By Wednesday morning (4am)
the cold front will be knocking on the doorstep of the bay area,
before pushing S and E during the day. Latest guidance continues
suggest a possible ncfr, which could bring periods of brief
intense rainfall during the Wednesday am commute. The exact
timing could shift a little, but still expect impacts to the am
commute. Additionally rain will continue through the day as the
front pushes through the bay area. Wednesday is also a big travel
day for thanksgiving so travel could be dicey with wet roads and
mountain snow (sierra). The front also looks to tap into to some
instability over the coastal waters. Therefore added a slight
chance for thunder over the waters on Wednesday. Confidence is low
over land, but may need it later. Post frontal showers will be
possible Wednesday night into Thursday, but the heaviest rain will
have exited the area. Initial rainfall estimated will be
0.25-0.75 inches and 1-1.5 inches for terrain favored locations
through Thursday. Do expect some rain shadowing in the santa
clara and salinas valleys given the robust SW flow ahead of the
front. It should be noted that wpc has much of the bay area in a
marginal risk for excessive rainfall on Wednesday with the fropa.

As for thanksgiving holiday, a few lingering showers possible
early, but then break is possible before another system arrives
late. Medium range guidance brings another system to the west
coast late on thanksgiving. Locally, rain will be possible over
the north bay late in the day. Rain will gradually push southward
thanksgiving night into Friday. For what it's worth, models have
been trending drier south of san jose with the second system.

The drying trend continues into the weekend with only a few
showers possible over the north bay.

Details beyond the weekend begin to wane as model consensus
diminishes. However, a somewhat active pattern remains as
additional system may bring precip to norcal. Stay tuned.

Aviation As of 03:29 am pst Monday... For 12z tafs. High clouds
continue to stream overhead thanks to a low pressure system off
the coast. These clouds are making it difficult to see to the
surface on the satellite, but it appears there are some patches of
stratus along the coast with some stations reporting fog. Patchy
fog may be possible this morning in the north bay and around the
monterey peninsula. Otherwise, the region will continue to see
reduced vis (~MVFR ifr) due to wildfire smoke as well as slant
range vis issues. May be some improvement in smoke conditions
tomorrow as we undergo a pattern shift and southerly winds
increase. Light winds will persist through the period.

Vicinity of ksfo... Light winds, reduced vis to around 2sm-4sm and
sct-bkn CIGS around 1000 to 2000 ft due to smoke and haze.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... High clouds and light winds. May see
reduced vis to MVFR due to wildfire smoke. Patches of low CIGS and
fog will be possible this morning, although confidence is low.

Marine As of 02:12 am pst Monday... Generally light winds will
continue into Tuesday before southerly winds increase ahead of an
approaching front. Southerly winds will increase Tuesday night
into Wednesday with gale force gusts possible, especially along
the immediate coast from pigeon point to point piedras blancas.

There will also be a slight chance of thunderstorms across the
waters Wednesday morning through the evening. Winds will diminish
and gradually transition out of the northwest on thanksgiving.

Light mixed swell will continue through mid-week before a larger
northwest swell arrives late this week followed by another storm
system.

Mtr watches warnings advisories
Tday None.

Public forecast: mm
aviation: as
marine: as
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 8 mi44 min E 1.9 G 2.9 44°F 57°F1018 hPa
AAMC1 - 9414750 - Alameda, CA 13 mi44 min Calm G 0 51°F 57°F1017.9 hPa
LNDC1 14 mi44 min S 1 G 1.9 50°F 1017.6 hPa
OBXC1 16 mi44 min 51°F 49°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi44 min S 1.9 G 2.9 48°F 1017.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi44 min S 1.9 G 2.9
PXSC1 18 mi56 min 53°F 46°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 18 mi44 min Calm G 1.9 51°F 1016.6 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi44 min N 9.9 G 12 54°F 55°F1017.7 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 23 mi44 min N 2.9 G 4.1 50°F 1017.9 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 25 mi39 min W 5.1 52°F 1018 hPa
RCMC1 - 9414863 - Richmond, CA 25 mi44 min N 5.1 G 6 56°F 56°F1017.3 hPa
46237 - San Francisco Bar, CA (142) 28 mi44 min 54°F3 ft
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi44 min E 4.1 G 5.1 47°F 56°F1018.4 hPa46°F
PCOC1 - 9415144 - Port Chicago, CA 31 mi44 min E 7 G 7 45°F 56°F1018.6 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi44 min E 8.9 G 16 51°F 1017.6 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 32 mi44 min ESE 4.1 G 5.1 47°F 1018.5 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 38 mi34 min E 12 G 16 55°F 54°F1017.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 41 mi89 min Calm 34°F 1018 hPa30°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hayward, Hayward Air Terminal, CA3 mi80 minN 03.00 miHaze Smoke44°F35°F71%1018.4 hPa
Oakland, Metro Oakland International Airport, CA7 mi21 minESE 42.00 miHaze Smoke48°F39°F74%1017.9 hPa
San Carlos Airport, CA8 mi27 minN 01.50 miFog/Mist Smoke46°F44°F93%1017.9 hPa
Palo Alto Airport, CA10 mi27 minN 02.50 miSmoke43°F41°F93%1018.3 hPa
San Francisco, San Francisco International Airport, CA11 mi18 minSSE 31.50 miFog/Mist Smoke50°F46°F89%1017.6 hPa
Mountain View, Moffett Field, CA14 mi78 minN 04.00 miSmoke44°F41°F89%1018 hPa
Livermore, Livermore Municipal Airport, CA18 mi21 minN 01.50 miHaze Smoke40°F34°F79%1018.2 hPa
Half Moon Bay Airport, CA20 mi39 minNNE 32.50 miFog/Mist41°F39°F93%1016.9 hPa
San Jose, San Jose International Airport, CA21 mi21 minSSE 33.00 miOvercast with Haze45°F37°F77%1017.9 hPa

Wind History from HWD (wind in knots)
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Last 24hrE3SE4CalmSW4W5W3NW6N3CalmCalmCalmNE6NE3E4NE4E4CalmCalmCalmE4E4CalmCalmCalm
1 day agoCalmNW4CalmW4W6W8W10W7NW5W3CalmNE3NE4NE5NE5NE4E4CalmE3E3NE4E3E3E3
2 days agoNE3S3CalmW4W3W4W3NW3CalmN3NE5NE3E4CalmE4E3E3CalmNE5CalmE3CalmE3E4

Tide / Current Tables for San Mateo Bridge (east end), San Francisco Bay, California
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San Mateo Bridge (east end)
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Mon -- 02:57 AM PST     Moonset
Mon -- 03:14 AM PST     1.27 feet Low Tide
Mon -- 06:52 AM PST     Sunrise
Mon -- 09:26 AM PST     7.42 feet High Tide
Mon -- 03:16 PM PST     Moonrise
Mon -- 04:17 PM PST     0.96 feet Low Tide
Mon -- 04:55 PM PST     Sunset
Mon -- 10:01 PM PST     6.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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42.71.81.31.52.43.85.36.67.37.36.65.43.92.51.511.22.13.44.85.96.36

Tide / Current Tables for Mulford Gardens Channel #2 SSW, South San Francisco Bay, California Current
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Mulford Gardens Channel #2 SSW
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Mon -- 02:48 AM PST     0.00 knots Slack
Mon -- 02:57 AM PST     Moonset
Mon -- 06:06 AM PST     0.88 knots Max Flood
Mon -- 06:53 AM PST     Sunrise
Mon -- 09:09 AM PST     -0.00 knots Slack
Mon -- 12:07 PM PST     -0.72 knots Max Ebb
Mon -- 03:16 PM PST     Moonrise
Mon -- 03:36 PM PST     0.00 knots Slack
Mon -- 04:55 PM PST     Sunset
Mon -- 06:45 PM PST     0.84 knots Max Flood
Mon -- 09:44 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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-0.6-0.4-0.20.10.50.80.90.80.50.1-0.3-0.6-0.7-0.7-0.5-0.20.20.60.80.80.70.4-0.1-0.4

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 (11,2,3,4)
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Ground Weather Radar Station San Francisco Bay Area, 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.