Saturday, May27, 2017 L-36.com


Marine Weather and Tides
Alameda, CA

Version 3.4
What's New / NOTES
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 5:48AMSunset 8:24PM Saturday May 27, 2017 2:48 AM PDT (09:48 UTC) Moonrise 6:54AMMoonset 9:36PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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- 848 Pm Pdt Fri May 26 2017
Tonight..W to sw winds 10 to 20 kt...decreasing to 5 to 15 kt overnight. Patchy fog after midnight.
Sat..W to sw winds 5 to 15 kt...increasing to 10 to 20 kt in the afternoon. Patchy fog in the morning.
Sat night..W winds 10 to 20 kt.
Sun..SW winds 15 to 25 kt.
Sun night..W winds 15 to 25 kt.
Memorial day..SW winds 10 to 20 kt.
Tue..SW winds 5 to 15 kt.
Wed..SW winds 5 to 15 kt.
PZZ500 848 Pm Pdt Fri May 26 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light westerly winds will prevail over the coastal waters through early Saturday. High pressure will build over the eastern pacific this weekend resulting in increasing northwest winds along with steeper wind waves.

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 270550
afdmtr
area forecast discussion
national weather service san francisco bay area
1050 pm pdt Fri may 26 2017

Synopsis Temperatures will begin trending back to seasonal
norms as high pressure builds over the region. Dry and warmer
Sunday and Monday. Another trough begins to approach by Tuesday
and Wednesday with a modest cooling trend and continued coastal
clouds.

Discussion As of 8:59 pm pdt Friday... Low clouds were slow to
clear today with widespread low clouds holding on through the
late afternoon. The last few frames of visible satellite imagery
shows only patchy low clouds clinging to the hills at this hour.

Low clouds are expected to return once again late tonight.

Confidence is low as to when the stratus will return however it is
likely to fill in along the coast and locally inland under a
slightly more compressed 2000-2500 ft marine layer. The shallower
marine layer will likely limit stratus intrusion inland compared
to what we have seen the last couple of days.

Temperature varied by only a few degrees today from yesterdays
high with most locations topping out in the upper 50s to lower
60s along the coast to mid to upper 60s around the bays and
inland. The warmest inland locations that were exposed to a bit
more Sun late in the day reached into the low to mid 70s.

Below average temperature are expected to begin warming ever so
slightly Saturday to near normal temperatures as high pressure
begins building in over the region. The warming trend will really
take hold on Sunday and Monday of this memorial day weekend as 850mb
temps soar to around 18 degrees c and 500mb heights reach 582 dam
by Monday. The most noticeable warming will be felt inland with
temperatures reaching into the 80s to low 90s in the warmest
locations. Near the coast temperatures will be tempered by the
cool ocean influence with temperatures only warming to around 60
to the 70s near the bays.

Temperatures will cool by midweek as an approaching upper level
trough moves across the state resulting in a deepening marine
layer, patchy drizzle along the coast and a cooler airmass
settling in over the area. Models do not have a good handle on
this system and hence will hold off on any mention of precip at
this time.

High pressure is forecast to fill in behind the low as it shift
south and east through the later half of the week. Temperatures
are expected to rebound to seasonal averages Friday and into the
following weekend.

As always if you plan to travel over this holiday weekend please
take time to visit weather.Gov for the latest forecast for your
route and travel destinations.

Aviation As of 10:45 pm pdt Friday... Low clouds cleared from
most terminals on Friday evening. But significant moisture remains
in the boundary layer and so it's likely that most terminals will
develop MVFR ceilings overnight, continuing through much of
Saturday morning.VFR expected at all terminals by midday
Saturday. Light southwest winds overnight will turn to the west
and northwest on Saturday afternoon and increase.

Vicinity of ksfo...VFR early in period with MVFR ceilings likely
to develop overnight... Most likely around 09z although confidence
is low concerning timing. Clearing expected to take place by
17-18z Saturday morning withVFR conditions for the remainder of
the day. Light westerly winds overnight, increasing Saturday
afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR early in period with MVFR ceilings
likely to develop by 08z and continue until 19z Saturday. Light
winds.

Marine As of 08:05 pm pdt Friday... Light westerly winds will
prevail along the coast through early Saturday. High pressure
will build over the eastern pacific this weekend resulting in
increasing winds along with steeper wind waves.

Mtr watches warnings advisories
Tday Sca... Mry bay from 3 pm
sca... Pigeon pt to pt pinos 0-10 nm from 3 pm
sca... Pt pinos to pt piedras blancas 0-10 nm from 3 pm
public forecast: cw
aviation: dykema
marine: dykema
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LNDC1 1 mi49 min WSW 6 G 8 55°F 1017.6 hPa
AAMC1 - 9414750 - Alameda, CA 1 mi49 min W 2.9 G 6 55°F 61°F1018.1 hPa (+0.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 3 mi49 min SW 7 G 8.9
OBXC1 4 mi49 min 55°F 49°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi49 min SW 5.1 G 6 55°F 1017.6 hPa (+0.0)
PXSC1 6 mi49 min 54°F 50°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 6 mi49 min WNW 1.9 G 7 54°F 1016.5 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 10 mi49 min SSW 5.1 G 7 55°F 1017.8 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 10 mi49 min SW 2.9 G 6 53°F 55°F1017.8 hPa (+0.0)
RCMC1 - 9414863 - Richmond, CA 12 mi49 min SW 4.1 G 7 55°F 58°F1017.3 hPa (+0.0)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi62 min Calm 53°F 1018 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi49 min WSW 9.9 G 13 56°F 1017.1 hPa (+0.0)
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi49 min WSW 8 G 9.9 54°F 64°F1017.6 hPa (+0.0)51°F
46237 - San Francisco Bar, CA (142) 19 mi49 min 55°F3 ft
RTYC1 - 9414523 - Redwood City, CA 19 mi49 min SW 2.9 G 2.9 55°F 67°F1017.1 hPa (+0.0)
UPBC1 20 mi49 min W 11 G 15
PCOC1 - 9415144 - Port Chicago, CA 23 mi49 min WSW 13 G 15 54°F 65°F1016.9 hPa (-0.3)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi49 min WNW 11 G 15 55°F 1016.5 hPa (+0.0)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi59 min SW 5.8 G 7.8 53°F 55°F3 ft1017.5 hPa (+0.0)
SFXC1 - San Francisco Bay Reserve, CA 32 mi64 min WNW 6 52°F 1017 hPa50°F
PRYC1 - 9415020 - Point Reyes, CA 40 mi49 min Calm G 1.9 55°F 55°F1017.1 hPa (+0.0)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi59 min WSW 5.8 G 7.8 54°F 55°F5 ft1017.2 hPa (+0.0)

Wind History for Alameda, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA6 mi56 minW 710.00 miMostly Cloudy57°F50°F78%1017.8 hPa
Hayward, Hayward Air Terminal, CA12 mi55 minW 310.00 miMostly Cloudy57°F46°F67%1018.5 hPa
San Francisco, San Francisco International Airport, CA12 mi53 minWSW 610.00 miA Few Clouds54°F46°F77%1017.5 hPa
San Carlos Airport, CA17 mi59 minN 010.00 miOvercast54°F46°F77%1017.9 hPa
Concord, Buchanan Field, CA18 mi56 minSW 510.00 miFair54°F46°F77%1016 hPa
Half Moon Bay Airport, CA22 mi54 minN 07.00 miOvercast50°F46°F88%1017.9 hPa

Wind History from OAK (wind in knots)
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Last 24hrSW13SW15SW14SW14SW15SW13SW12W8W6W7W10W10W11W12W13NW11
G21
W13W12W10NW7W5W6SW8W7
1 day agoSW18SW16SW15SW13SW15
G24
SW13SW12SW15SW15SW19SW17SW20SW18SW21SW21
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2 days agoW9W11NW6W5W6NW6W4W53NW8NW11NW13NW14NW13W13NW11NW7W9W9W7SW14SW17SW14SW20
G26

Tide / Current Tables for Oakland Inner Harbor, San Francisco Bay, California
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Oakland Inner Harbor
Click for Map
Sat -- 01:03 AM PDT     7.48 feet High Tide
Sat -- 05:50 AM PDT     Sunrise
Sat -- 07:53 AM PDT     -1.78 feet Low Tide
Sat -- 07:55 AM PDT     Moonrise
Sat -- 03:01 PM PDT     5.63 feet High Tide
Sat -- 07:51 PM PDT     2.18 feet Low Tide
Sat -- 08:22 PM PDT     Sunset
Sat -- 10:35 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
77.57.15.941.8-0.2-1.4-1.8-1.3-0.21.22.84.25.25.65.34.33.22.42.22.63.64.8

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

Sat -- 01:15 AM PDT     -0.00 knots Slack
Sat -- 04:08 AM PDT     -0.60 knots Max Ebb
Sat -- 05:50 AM PDT     Sunrise
Sat -- 07:01 AM PDT     0.01 knots Slack
Sat -- 07:55 AM PDT     Moonrise
Sat -- 11:54 AM PDT     0.47 knots Max Flood
Sat -- 02:59 PM PDT     -0.01 knots Slack
Sat -- 04:47 PM PDT     -0.30 knots Max Ebb
Sat -- 06:58 PM PDT     0.00 knots Slack
Sat -- 08:22 PM PDT     Sunset
Sat -- 10:35 PM PDT     Moonset
Sat -- 11:40 PM PDT     0.32 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.1-0.2-0.5-0.6-0.5-0.300.20.30.40.50.50.40.2-0-0.2-0.3-0.200.10.20.30.3

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 (5,6,7,8)
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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.