Sunday, September15, 2019 L-36.com


Marine Weather and Tides
Oakland, CA

Version 3.4
NOTICE
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 6:49AMSunset 7:18PM Sunday September 15, 2019 6:59 PM PDT (01:59 UTC) Moonrise 7:28PMMoonset 7:05AM Illumination 96% 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- 245 Pm Pdt Sun Sep 15 2019
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..W winds 10 to 20 kt with gusts up to 30 kt, becoming sw 5 to 10 kt after midnight. A slight chance of rain after midnight.
Mon..W winds 10 to 20 kt with gusts up to 25 kt. A chance of rain.
Mon night..W winds 5 to 15 kt.
Tue..W winds 5 to 15 kt.
Tue night..W winds 5 to 15 kt.
Wed..SW winds 5 to 15 kt.
Wed night..W winds 5 to 15 kt.
Thu..W winds 10 to 20 kt with gusts up to 25 kt.
Fri..W winds 10 to 20 kt.
PZZ500 245 Pm Pdt Sun Sep 15 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Expect locally breezy afternoon and evening winds along the inner coastal waters south of pigeon point and over the bays. Winds will ease early this week as high pressure over the eastern pacific weakens. A cold front will move through the waters on Monday bringing a chance of showers. Mixed seas will continue with moderate period northwest swell and a slightly longer period southerly swell.


7 Day Forecast for Marine Location Near Oakland, CA
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location: 37.78, -122.25     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 152323
afdmtr
area forecast discussion
national weather service san francisco bay area
419 pm pdt Sun sep 15 2019

Synopsis The cooling trend that began in coastal areas on
Saturday will spread inland today and Monday as a weather system
moves in from the northwest. There is also a chance of light rain
on Monday, mainly across the northern half of the area. A second
weather system may bring renewed rain chances around the middle of
next week, and also keep temperatures on the cool side of normal
through much of the week.

Discussion As of 2:23 pm pdt Sunday... Noticeably cooler
conditions have finally arrived to the interior areas of the san
francisco bay area this afternoon. Yesterday the relief from the
heat was only realized along the immediate coast, but as the
marine layer ballooned to around 1,500 ft deep along with the
increased onshore flow (surface pressure gradient +3.3 mb from
sfo-sac today vs +1.2 mb yesterday), the pacific-cooled air has
managed to spread inland and drop interior temperatures by 10 to
20 degrees. As of the 2 pm hour, livermore was running 18 degrees
cooler than this time yesterday, 14 degrees cooler at concord, and
13 degrees at santa rosa. Bay area-wide, Sunday's high
temperatures will register about 2 to 8 degrees below middle
september climatological normals.

Over the next 24 hours, a frontal system associated with a low in
the pacific northwest will push southeastward into northern and
central california. This will bring the first decent shot of
measurable rainfall of the season to the san francisco bay area.

As we'll be on the far southern extent of this system, rain totals
are expected to be on the light side, with most locations
forecast to receive less than a tenth of an inch. The 18z hrrr
that GOES out through 06z Tuesday actually keeps much of the bay
area dry with just a few areas of measurable rain in the hills.

The mid long range models can be a bit bullish with their handling
of these early season systems; therefore, a drier outcome
wouldn't at all be surprising with climatology prevailing.

Seasonably cool conditions will persist through much of the week
as a reinforcing shot of cooler air will arrive with another
system that will drop south from the pacific northwest around
Wednesday. Right now the best chance for rain with this system
will stay north of the golden gate. Should note that the forecast
track of this upper low has pushed a bit more to the east over the
past few ECMWF and GFS model runs. The latest ECMWF does indicate
some north to northeast winds at the 925 and 850 mb levels for
the north and east bay mountains overnight Wednesday and into
Thursday that will be worth monitoring, particularly if rain
chances are minimal.

Temperatures will begin to moderate on Friday and into next
weekend as upper level heights rebound.

Aviation As of 4:19 pm pdt Sunday... It'sVFR at the terminals,
however just beginning to see a few stratus and fog patches already
along coastal marin and san mateo counties. Surface to lower level
cooling, a deepening marine layer interacting with increasing water
vapor advancing from the west brings low clouds MVFR ceilings
inland with late afternoon and evening sea breezes.

Convergence along a cold front to the NW sweeps southward over the
cwa Monday morning with an amplifying 500 mb trough enhancing upward
vertical motion. The 00z bay area tafs advertise wet weather with
light to moderate rain Monday morning quickly turning to vicinity
showers before drier air returns in the afternoon. Patchy drizzle
could develop in lowering ceilings to the south, with very light
rain to light rain band possible far south Monday morning. Ceilings
MVFR tonight and Monday morning except local to areas ifr ceilings
over the north bay counties and local ifr overnight southward along
the coast.

Vicinity of ksfo... Gusty west wind to 25 knots andVFR until mid
evening. MVFR tonight with light rain arriving by 10z then moderate
rain 13z-18z. Stratus redeveloping in the evening as ongoing cooling
and forcing lifting along coastal terrain and alignment of surface
to lower level west winds bring an inland intrusion of stratus
tonight. Frontal passage occurs Monday morning.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR this afternoon then increasing stratus
clouds developing in the early to mid evening. MVFR-ifr ceilings
tonight and Monday morning, patchy drizzle possible tonight. Very
light to light rain arriving late morning and afternoon.

Marine As of 3:43 pm pdt Sunday... Expect locally breezy
afternoon and evening winds along the inner coastal waters south
of pigeon point and over the bays. Winds will ease early this week
as high pressure over the eastern pacific weakens. A cold front
will move through the waters on Monday bringing a chance of
showers. Mixed seas will continue with moderate period northwest
swell and a slightly longer period southerly swell.

Mtr watches warnings advisories
Tngt Sca... Sf bay until 9 pm
sca... Mry bay until 9 pm
sca... Pigeon pt to pt pinos 0-10 nm until 9 pm
sca... Pt pinos to pt piedras blancas 0-10 nm until 3 am
public forecast: rowe
aviation marine: canepa
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LNDC1 2 mi60 min W 8 G 17 68°F 1010.7 hPa (-0.4)
AAMC1 - 9414750 - Alameda, CA 3 mi66 min W 13 G 17 67°F 70°F1011.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 4 mi60 min W 18 G 25
OBXC1 5 mi66 min 66°F 64°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 5 mi60 min W 18 G 22 65°F 1010.6 hPa (-0.0)
PXSC1 8 mi60 min 67°F 62°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 8 mi60 min WSW 11 G 17 66°F 1009.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi60 min SW 8 G 11 67°F 1010.8 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi66 min WSW 9.9 G 16 63°F 60°F1011.3 hPa
RCMC1 - 9414863 - Richmond, CA 13 mi60 min 65°F
UPBC1 19 mi60 min W 20 G 28
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi60 min WNW 14 G 19 72°F 1009.6 hPa (-0.0)
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi60 min W 20 G 23 72°F 71°F1009.4 hPa (-0.3)60°F
RTYC1 - 9414523 - Redwood City, CA 19 mi60 min WSW 12 G 16 69°F 74°F1012 hPa (-0.0)
46237 - San Francisco Bar, CA (142) 20 mi60 min 58°F3 ft
PCOC1 - 9415144 - Port Chicago, CA 22 mi60 min WSW 18 G 24 72°F 71°F1009.5 hPa (-0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 26 mi60 min WNW 12 G 20 75°F 1008.7 hPa (-0.3)
SFXC1 - San Francisco Bay Reserve, CA 31 mi75 min W 17 73°F 1008 hPa58°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 31 mi40 min W 7.8 G 9.7 61°F 59°F1011.9 hPa
PRYC1 - 9415020 - Point Reyes, CA 41 mi60 min 57°F1011.1 hPa (-0.7)

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA6 mi2.1 hrsW 1810.00 miPartly Cloudy and Breezy72°F59°F64%1010.7 hPa
Hayward, Hayward Air Terminal, CA11 mi2.1 hrsWSW 1310.00 miFair70°F59°F68%1012 hPa
San Francisco, San Francisco International Airport, CA12 mi2.1 hrsW 17 G 2110.00 miMostly Cloudy72°F57°F61%1010.8 hPa
Concord, Buchanan Field, CA17 mi2.1 hrsW 1310.00 miFair79°F52°F39%1008.1 hPa
San Carlos Airport, CA17 mi73 minWSW 10 G 1910.00 miPartly Cloudy70°F59°F69%1011.5 hPa
Palo Alto Airport, CA22 mi73 minW 1210.00 miPartly Cloudy72°F57°F61%1011.5 hPa
Livermore, Livermore Municipal Airport, CA23 mi2.1 hrsWSW 1610.00 miFair76°F54°F47%1009.6 hPa
Half Moon Bay Airport, CA23 mi80 minN 010.00 miOvercast64°F59°F83%1012.2 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hr----------------SW33SW15----CalmSW94--W104W10W15W16W18W20
1 day ago----------Calm----NW3CalmCalmCalmCalmNW3NW7NW7W9NW9W12NW12W10NW9W13W11
2 days ago--NW5NW8----------NE3NE3E3NE3CalmCalmCalmSW3W6W7W7W8NW8NW8--NW10

Tide / Current Tables for Oakland Harbor, Park Street Bridge, San Francisco Bay, California
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Oakland Harbor
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Sun -- 01:20 AM PDT     6.09 feet High Tide
Sun -- 06:50 AM PDT     Sunrise
Sun -- 07:28 AM PDT     0.81 feet Low Tide
Sun -- 08:05 AM PDT     Moonset
Sun -- 02:00 PM PDT     5.91 feet High Tide
Sun -- 07:17 PM PDT     Sunset
Sun -- 07:47 PM PDT     1.53 feet Low Tide
Sun -- 08:27 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.56.15.95.242.61.50.90.91.52.53.74.85.65.95.64.73.62.41.71.51.92.83.8

Tide / Current Tables for Oakland Harbor WebStreeter Street, San Francisco Bay, California Current
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Oakland Harbor WebStreeter Street
Click for Map
Sun -- 01:15 AM PDT     -0.00 knots Slack
Sun -- 04:00 AM PDT     -1.16 knots Max Ebb
Sun -- 06:50 AM PDT     Sunrise
Sun -- 07:39 AM PDT     0.01 knots Slack
Sun -- 08:05 AM PDT     Moonset
Sun -- 10:43 AM PDT     0.96 knots Max Flood
Sun -- 01:46 PM PDT     -0.01 knots Slack
Sun -- 04:20 PM PDT     -1.04 knots Max Ebb
Sun -- 07:17 PM PDT     Sunset
Sun -- 07:50 PM PDT     0.00 knots Slack
Sun -- 08:27 PM PDT     Moonrise
Sun -- 10:55 PM PDT     0.91 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.1-0.5-1-1.2-1-0.7-0.30.20.60.90.90.80.4-0.1-0.7-1-1-0.7-0.40.10.50.80.9

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 (21,6,7,8)
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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.