Wednesday, November22, 2017 L-36.com


Marine Weather and Tides
Alameda, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:56AMSunset 4:54PM Wednesday November 22, 2017 3:10 AM PST (11:10 UTC) Moonrise 10:20AMMoonset 8:30PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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 San Francisco Bay North Of The Bay Bridge- 222 Am Pst Wed Nov 22 2017
Today..NE winds 10 kt. Patchy fog in the morning.
Tonight..NW winds 10 kt.
Thanksgiving day..W winds 5 to 15 kt.
Thu night..NW winds 10 kt.
Fri..NW winds 5 to 15 kt...becoming east.
Sat..S winds 5 to 15 kt. Slight chance of rain.
Sun..SW winds 10 kt. Chance of rain.
PZZ500 222 Am Pst Wed Nov 22 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light to moderate winds will continue as high pressure remains over the coastal waters. Rain chances will return for the northern waters towards the end of the week and over the weekend. Winds and swells will increase over the weekend.

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 220657
afdmtr
area forecast discussion
national weather service san francisco bay area
1057 pm pst Tue nov 21 2017

Synopsis High pressure will continue to produce dry and warm
weather across our entire region through Wednesday. Rain chances
return to the north bay on thanksgiving, but the rest of the
region is expected to remain dry with continued warmer than normal
temperatures. Dry weather is expected to return to all areas on
Friday. High pressure will move east during the weekend and rain
chances will begin in the north on Saturday and spread across most
of the rest of the region by Sunday night.

Discussion As of 9:00 pm pst Tuesday... High pressure building
across the southwestern united states resulted in warming across
most of our region today. Afternoon highs today were mostly in the
upper 60s and 70s with some lower to mid 80s reported in coastal
santa cruz county and monterey county. Three high temperature
records were set or tied today including san jose (76), santa cruz
(81), and the salinas airport (82). The only areas that did not
see significant warming today were localized portions of the north
and east bay. In these areas temperatures were moderated by light
offshore flow advecting a slightly cooler airmass out of the
central valley.

No significant changes are forecast through Wednesday. Fog has
already developed at the sonoma county airport this evening and
expect patchy dense fog overnight and into Wednesday morning in
the north bay valleys. Also, dewpoints have been trending higher
in the east bay valleys where we could see somewhat more fog
tonight compared to last night. Temperatures tomorrow will be
similar to today, except perhaps a few degrees warmer in locations
not impacted by easterly flow out of the central valley. Record
highs are possible again, primarily in areas that saw record highs
today.

Moist southwesterly flow that continues to bring rain to the
pacific northwest and far northwest california will be kept north
of our area by the blocking ridge through Wednesday night. By
thanksgiving a shortwave trough moving inland across the pacific
northwest may weaken the ridge just enough to allow for light rain
to develop in the northern part of our area. However, the models
don't agree all that well on the specifics. The 00z NAM and 12z
ecmwf bring light rain into northern sonoma county on thanksgiving
morning, but are dry for all areas by thanksgiving afternoon. The
00z gfs, on the other hand, forecasts light rain for most of the
north bay throughout thanksgiving day and also clips the northern
portions of the sf peninsula and the east bay with precip by
thanksgiving afternoon. In any case, thanksgiving is not expected
to be a wash out by any means, because even the wettest models
forecast very light amounts of rainfall. For nearly all areas
south of the golden gate, thanksgiving will almost certainly be a
dry day with only slightly cooler temperatures.

After a dry Friday, prospects for precipitation gradually increase
through the weekend as the upper ridge shifts to the east,
allowing the trough over the eastern pacific to move inland over
northern california. Rain chances will primarily be confined to
the north bay on Saturday, but rain chances will spread south
across most of the rest of our forecast area on Sunday and Sunday
night.

Aviation As of 10:57 pm pst Tuesday... It'sVFR except patchy
fog has promptly developed in the north bay, e.G. Ksts reports 1 4
mile horizontal visibility and 300 feet vertical visibility (vv).

Klvk, kapc and kccr report MVFR visibility in mist.

Cirrus clouds clear tonight improving outgoing radiative cooling,
then cirrus return and thicken from north to south Wednesday. The
immediate concern into Wednesday morning is how much more areal
coverage of tule fog will there be? A stable atmosphere persists
tonight into Wednesday with surface winds mainly calm per most
statistical guidance, which favors dew on surfaces versus fog in
the absence of light mixing (3-5 knot) winds. At the same time there
is a weak offshore pressure gradient resulting in light e-se winds
in addition to drainage winds that will develop in the valleys later
tonight into Wednesday morning. Longer night-time hours, of course,
allow for extra cooling. Fog patches that develop should clear by
mid-late Wednesday morning.

Vicinity of ksfo...VFR, wind becoming calm tonight. Light winds return
Wednesday. Moderate to high confidence.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR. Winds e-se tonight and Wednesday morning,
becoming onshore 5-10 knots Wednesday afternoon. Moderate to high
confidence.

Climate
Here is a list of record high temperatures
along with the most recent date it occurred.

*signifies there are additional years the record was set.

Tuesday Wednesday
sf bay area

Location
Healdsburg... ... ... ... ..78 1929 79 1959
santa rosa... ... ... ... ..77 1936 78 1939
calistoga... ... ... ... ... 79 2002 90 1932
kentfield... ... ... ... ... 76 1917 77 1939
san rafael... ... ... ... ..74 1967 80 1959
napa... ... ... ... ... ... ..80 1923 81 1959
san francisco... ... ... ..76 2005 76 2005
sfo airport... ... ... ... .70 1958 74 1959
oakland airport... ... ... 73 2015 77 1959
richmond... ... ... ... ... .74 2002 74 2002
livermore... ... ... ... ... 80 1915 80 1915
moffett field... ... ... ..74 1950 75 1959
san jose... ... ... ... ... .76 1917 75 1924
gilroy... ... ... ... ... ... 79 2002 79 2005
monterey bay area

Location
Monterey... ... ... ... ... .78 2005 80 1954
santa cruz... ... ... ... ..81 1925 84 1933
salinas... ... ... ... ... ..84 1958 78 2015
salinas airport... ... ... 80 1933 86 1933
king city... ... ... ... ... 87 2002 92 1930

Marine As of 9:53 pm pst Tuesday... Southerly winds will continue
this week prior to the arrival of a cold front arriving late
Saturday evening into Sunday morning. Rain chances will return to
the northern coastal waters towards the end of the week with
additional chances of rain over the weekend. West to northwest
swell will increase over the weekend.

Mtr watches warnings advisories
Tngt None.

Public forecast: dykema
aviation marine: canepa
climate: mm
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LNDC1 1 mi40 min Calm G 1 57°F 1020.2 hPa
AAMC1 - 9414750 - Alameda, CA 1 mi40 min Calm G 0 57°F 58°F1020.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 3 mi40 min WSW 1 G 1.9
OBXC1 4 mi40 min 57°F 56°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi40 min Calm G 1 56°F 1020.3 hPa
PXSC1 6 mi40 min 60°F 57°F
FTPC1 - 9414290 - San Francisco, CA 10 mi40 min N 12 G 13 59°F 58°F1020.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 10 mi40 min NNE 6 G 7 61°F 1020.5 hPa
RCMC1 - 9414863 - Richmond, CA 12 mi40 min NNE 8 G 9.9 61°F 58°F1020.2 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi48 min WNW 5.1 58°F 1020 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi40 min ENE 13 G 15 57°F 1020.5 hPa
RTYC1 - 9414523 - Redwood City, CA 19 mi40 min S 1 G 2.9 55°F 60°F1020.6 hPa
46237 - San Francisco Bar, CA (142) 19 mi40 min 57°F4 ft
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi40 min E 1.9 G 2.9 53°F 58°F1021.3 hPa53°F
PCOC1 - 9415144 - Port Chicago, CA 23 mi40 min E 6 G 7 55°F 58°F1021 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi40 min S 2.9 G 4.1 55°F 1021 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi80 min E 16 G 18 61°F 57°F4 ft1019 hPa (-0.8)
SFXC1 - San Francisco Bay Reserve, CA 32 mi85 min Calm 46°F 1021 hPa
PRYC1 - 9415020 - Point Reyes, CA 40 mi40 min W 4.1 G 5.1 57°F1018.9 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi80 min NNE 3.9 G 3.9 61°F 59°F5 ft1018.6 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 mi17 minN 06.00 miFog/Mist54°F53°F97%1020.2 hPa
Hayward, Hayward Air Terminal, CA12 mi16 minESE 34.00 miFair with Haze56°F48°F77%1020.9 hPa
San Francisco, San Francisco International Airport, CA12 mi14 minSSE 310.00 miA Few Clouds56°F51°F84%1020.1 hPa
San Carlos Airport, CA17 mi15 minN 010.00 miFair54°F51°F94%1020.3 hPa
Concord, Buchanan Field, CA18 mi17 minN 05.00 miFog/Mist51°F48°F92%1019.6 hPa
Half Moon Bay Airport, CA22 mi15 minENE 310.00 miFair54°F50°F88%1017.9 hPa

Wind History from OAK (wind in knots)
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Last 24hrE7E9E8E8E6E7SE5SW6SW6SW6W5W6W5NW5NE3S4W5CalmS4W5CalmCalmCalmCalm
1 day agoS3CalmNE3CalmE3SE5S3SE3CalmW3N5CalmCalmW5CalmNW3NW4N4NW7NW5CalmCalmE9E9
2 days agoNE4CalmNE3CalmCalmE3S3SW4W4W7W7W6NW6NW4W4NW5CalmCalmCalmSE3E4CalmCalmNE3

Tide / Current Tables for Oakland Inner Harbor, San Francisco Bay, California
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Oakland Inner Harbor
Click for Map
Wed -- 03:04 AM PST     5.07 feet High Tide
Wed -- 06:57 AM PST     Sunrise
Wed -- 07:47 AM PST     3.13 feet Low Tide
Wed -- 10:20 AM PST     Moonrise
Wed -- 01:25 PM PST     5.95 feet High Tide
Wed -- 04:53 PM PST     Sunset
Wed -- 08:23 PM PST     -0.07 feet Low Tide
Wed -- 08:30 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.24.24.85.14.94.33.73.23.13.444.75.55.95.95.34.32.91.50.5-000.61.5

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

Wed -- 03:06 AM PST     -0.01 knots Slack
Wed -- 04:43 AM PST     -0.19 knots Max Ebb
Wed -- 06:57 AM PST     Sunrise
Wed -- 07:04 AM PST     0.00 knots Slack
Wed -- 10:20 AM PST     Moonrise
Wed -- 11:36 AM PST     0.18 knots Max Flood
Wed -- 01:49 PM PST     -0.00 knots Slack
Wed -- 04:50 PM PST     -0.40 knots Max Ebb
Wed -- 04:53 PM PST     Sunset
Wed -- 07:49 PM PST     0.01 knots Slack
Wed -- 08:30 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.20-0.2-0.2-0.1-000.10.10.20.20.1-0-0.2-0.3-0.4-0.3-0.100.10.20.3

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (6,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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weather_mapweather_map weather_map

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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.