Thursday, November14, 2019 L-36.com


Marine Weather and Tides
Alameda, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:46AMSunset 5:00PM Thursday November 14, 2019 3:51 PM PST (23:51 UTC) Moonrise 6:50PMMoonset 8:48AM Illumination 92% Phase: Waning Gibbous; Moon at 17 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- 312 Pm Pst Thu Nov 14 2019
Today..SW winds 5 to 10 kt.
Tonight..W winds 5 to 10 kt.
Fri..SW winds up to 10 kt. Patchy fog.
Fri night..W winds up to 10 kt. Patchy fog.
Sat..SW winds up to 10 kt. Patchy fog.
Sat night..W winds around 5 kt.
Sun..NE winds 5 to 15 kt.
Mon..NW winds up to 10 kt.
PZZ500 312 Pm Pst Thu Nov 14 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds across the coastal waters today. Winds switch to the northwest Friday and gradually increase into Friday night. A larger, longer period northwest swell will arrive and continue through Friday and Saturday. Wave heights around 10 feet will create hazardous conditions for small crafts Friday through Saturday.


7 Day Forecast for Marine Location Near Alameda city, CA
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location: 37.78, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 142203
afdmtr
area forecast discussion
national weather service san francisco bay area
203 pm pst Thu nov 14 2019

Synopsis Cloudy and seasonably cool the rest of today as an
upper trough passes over the region. Another weak system will
approach from the northwest tonight into early Friday and some
sprinkles or drizzle cant be ruled out, especially for the coastal
hills. Otherwise turning partly cloudy and warmer by Friday
afternoon. High pressure builds this weekend leading to a warming
trend with mostly sunny skies. Dry pattern continues at least
through early next week.

Discussion As of 02:03 pm pst Thursday... A deep marine layer
remains in place at over 3,000 feet as a weak upper trough moves
through the region. Low cloud cover and an expanding marine layer
have generated some drizzle across the area this afternoon.

Temperatures are mainly in the upper 50s to upper 60s inland with
little additional warming expected for the rest of the day. Patchy
drizzle will also remain a possibility over the next couple of
hours.

Another weak shortwave trough will move through tonight and
into tomorrow morning that may generate a few showers for coastal
areas and out over the waters. This morning's run of the ECMWF is
a little more generous spreading showers across much of the north
bay. High res models have precip much more scattered showing the
best chances for showers drizzle outside of our area and over the
waters. Leaned towards the high res models for this afternoon's
forecast package and kept precip chances fairly low. After another
cloudy morning, expect partly cloudy skies by the afternoon with
temperatures a few degrees warmer than today as the trough exits
the region and high pressure begins to build. Most areas will
remain in the 60s with some isolated locations hitting the low
70s.

Warming will continue into the weekend as a ridge of high pressure
builds over the eastern pacific and expands into california. A
brief period of dry north to northeast winds will develop in the
hills late Friday night and into Saturday morning. Winds at this
time are not expected to be strong and humidity values will stay
moderate enough to keep fire danger below extreme levels. As
conditions dry out by Saturday afternoon, winds will have eased.

The upper ridge will then remain in place the rest of the weekend
with temperatures forecast to be back above normal (~5-10 deg f)
by Saturday and through Monday.

Models still show the ridge weakening on Tuesday as an upper
trough drops down the west coast from the pacific northwest.

Earlier runs of the GFS and ECMWF were quite different in regards
to this system with the GFS showing the trough moving inland
through interior ca and nv on Wednesday while the ecmwf
developed a cut off low along the california coast. Today's 12z
run of the gfs, however, now more closely aligns with the ECMWF in
showing the trough forming into a cut off low and sliding down
the california coast. Both models also show some precipitation
associated with this low, although at this point do not expect it
to be significant. Solutions diverge once again beyond Wednesday
afternoon. This is still fairly far out in the forecast and things
will likely change between now and then.

Looking out farther in the extended. A handful of the GFS and
ecmwf ensembles are showing some precip towards the end of the
month. The deterministic longer range gfs, however, does not. Will
continue to look out for signs of wetting rains in the future,
stay tuned to the forecast.

Aviation As of 10:50 am pst Thursday... For 18z tafs. A weak
trough in vicinity leading to borderline MVFRVFR CIGS through
much of the TAF period. SE winds will veer towards the S then sw
through the day, with winds remaining generally light to locally
breezy. Light drizzle is possible over the higher terrain and
north bay, however, precipitation amounts are negligible and not
expected to lead to wet runways. CIGS lower overnight somewhat but
should remain generally MVFR, clearing toVFR through Friday
morning.

Vicinity of ksfo... Ceilings 2000-3500 at the sct to ovc coverage.

Se winds will become more s-sw and breezy over the next few hours
and then through the remainder of the day. CIGS lower somewhat
overnight and gradually begin to mix out late Friday morning to
early afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Reality underperforming the models per
cloud coverage late this morning, with fewer clouds than expected
at the low to mid levels. Some clouds around theVFR MVFR range
will persist through the day though may need to scale back taf
coverage per latest Sat imagery. Winds veer towards the sw-w by
early this afternoon. MVFR CIGS overnight.

Marine As of 10:41 am pst Thursday... Winds will remain light
and southerly across the coastal waters today. Winds will switch
to northwest on Friday following a weak cold frontal passage.

Light northwest swell will continue through the day today.

Beginning tonight, a larger, longer period northwest swell will
arrive and continue through Friday and Saturday. Wave heights
around 10 feet will create hazardous conditions for small crafts
Friday through Saturday.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm from 3 am
public forecast: as
aviation: drp
marine: drp
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 1 mi57 min S 6 G 7 58°F 58°F1019.5 hPa
LNDC1 1 mi51 min SSW 6 G 7 59°F 1019 hPa (+0.3)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 3 mi57 min SW 7 G 8
OBXC1 4 mi51 min 58°F 57°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi51 min WSW 4.1 G 7 59°F 1019.1 hPa (+0.4)
PXSC1 6 mi63 min 58°F 57°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 6 mi51 min W 6 G 8.9 57°F 1018.1 hPa (+0.3)
FTPC1 - 9414290 - San Francisco, CA 10 mi57 min W 2.9 G 5.1 56°F 55°F1019.5 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 10 mi51 min SW 6 G 8 58°F 1019.3 hPa (+0.0)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi40 min NNE 1 57°F 1019 hPa
RCMC1 - 9414863 - Richmond, CA 12 mi129 min S 6 G 8 57°F 56°F1019.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi51 min W 7 G 8 58°F 1018.5 hPa (+0.0)
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi51 min WSW 8 G 13 58°F1018.9 hPa (+0.5)
RTYC1 - 9414523 - Redwood City, CA 19 mi51 min S 5.1 G 9.9 61°F 61°F1019.7 hPa (+0.5)
UPBC1 20 mi51 min WSW 9.9 G 13
PCOC1 - 9415144 - Port Chicago, CA 23 mi51 min WSW 9.9 G 12 59°F1018.9 hPa (+0.5)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi51 min NW 11 G 15 1018.4 hPa (+0.9)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi31 min Calm G 1.9 56°F 55°F1019.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 32 mi66 min W 8 58°F 1019 hPa56°F
PRYC1 - 9415020 - Point Reyes, CA 40 mi51 min 55°F1018.8 hPa (+0.0)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi31 min WNW 5.8 G 7.8 57°F 58°F1019.4 hPa55°F

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA6 mi58 minSW 510.00 miOvercast59°F55°F87%1019.2 hPa
Hayward, Hayward Air Terminal, CA12 mi57 minW 910.00 miOvercast58°F55°F90%1020 hPa
San Francisco, San Francisco International Airport, CA12 mi1.9 hrsWSW 58.00 miOvercast59°F53°F81%1019 hPa
San Carlos Airport, CA17 mi64 minSSE 410.00 miOvercast61°F53°F77%1019.3 hPa
Concord, Buchanan Field, CA18 mi58 minWSW 910.00 miLight Rain60°F52°F75%1017.4 hPa
Palo Alto Airport, CA22 mi64 minVar 410.00 miOvercast63°F51°F68%1019 hPa
Half Moon Bay Airport, CA22 mi56 minW 50.75 miLight Rain55°F55°F100%1019.6 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hrNW10NW9NW8NW6N4CalmNW6NW4SW6W7W4CalmE3E4SE5SE5SE5SE5S6S6S6S3SW10
G19
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1 day agoNW7NW4CalmN3NW4N4NW3N4CalmN3N3CalmCalmCalmCalmCalmN3NW4W6NW6NW11W9W9W13
2 days agoW4W3NW6CalmCalmCalmNE3CalmCalmCalmCalmE3NW3CalmCalmCalmCalmW4W3W5W6NW6NW6NW5

Tide / Current Tables for Oakland Inner Harbor, San Francisco Bay, California
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Oakland Inner Harbor
Click for Map
Thu -- 01:42 AM PST     5.12 feet High Tide
Thu -- 06:20 AM PST     2.68 feet Low Tide
Thu -- 06:48 AM PST     Sunrise
Thu -- 08:48 AM PST     Moonset
Thu -- 12:25 PM PST     6.50 feet High Tide
Thu -- 04:58 PM PST     Sunset
Thu -- 06:50 PM PST     Moonrise
Thu -- 07:13 PM PST     -0.58 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.455.14.73.93.12.72.83.34.25.166.46.45.74.42.81.1-0-0.6-0.40.31.42.5

Tide / Current Tables for Oakland Inner Harbor Reach, 33 ft. below datum Current
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Oakland Inner Harbor Reach
Click for MapFlood direction 82 true
Ebb direction 255 true

Thu -- 01:36 AM PST     -0.01 knots Slack
Thu -- 03:22 AM PST     -0.24 knots Max Ebb
Thu -- 05:26 AM PST     0.00 knots Slack
Thu -- 06:48 AM PST     Sunrise
Thu -- 08:48 AM PST     Moonset
Thu -- 10:13 AM PST     0.24 knots Max Flood
Thu -- 12:29 PM PST     -0.00 knots Slack
Thu -- 03:32 PM PST     -0.47 knots Max Ebb
Thu -- 04:58 PM PST     Sunset
Thu -- 06:22 PM PST     0.00 knots Slack
Thu -- 06:50 PM PST     Moonrise
Thu -- 11:15 PM PST     0.35 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.1-0.1-0.2-0.2-0.100.10.20.20.20.20.1-0.1-0.3-0.4-0.4-0.3-0.10.10.20.30.30.3

Weather Map
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GEOS 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 (18,4,5,8)
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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.