Tuesday, August21, 2018 L-36.com


Marine Weather and Tides
Alameda, CA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:29AMSunset 7:54PM Tuesday August 21, 2018 3:00 PM PDT (22:00 UTC) Moonrise 3:59PMMoonset 1:13AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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- 235 Pm Pdt Tue Aug 21 2018
Rest of today..SW winds 10 to 20 kt with gusts up to 25 kt. Hazy.
Tonight..SW winds 5 to 15 kt.
Wed..SW winds 10 to 20 kt with gusts up to 25 kt.
Wed night..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu night..SW winds 10 to 20 kt with gusts up to 30 kt.
Fri..SW winds 10 to 20 kt with gusts up to 30 kt.
Sat..SW winds 5 to 15 kt.
PZZ500 235 Pm Pdt Tue Aug 21 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light onshore winds over the coastal waters through the coming days. Breezy onshore winds will develop near coastal gaps through the afternoon and evenings. Winds will increase over the northern waters Friday into the weekend. Light mixed swell overall.


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 212111
afdmtr
area forecast discussion
national weather service san francisco bay area
211 pm pdt Tue aug 21 2018

Synopsis After a period of cooling, a slight warming trend will
begin tomorrow as the upper trough influencing our current weather
exits to the northeast. This will allow temperatures to rebound to
near seasonal averages by late this week. Coastal clouds are
still expected to persist and penetrate inland each night.

Discussion As of 02:11 pm pdt Tuesday... Stratus has mainly
dissipated across the region with some lingering clouds around the
san francisco bay and northward. Satellite imagery also shows
smoke drifting across the north bay from various wildfires. Thanks
to persistent cloud cover and an upper trough stretching across
northern california, temperatures this afternoon are around 5 to
10 degrees cooler than this time yesterday. Expect another round
of overnight and morning low clouds as the marine layer is
forecast to remain above 1500 ft.

The upper low over idaho and associated trough that brought us
cooler weather will move to the northeast tomorrow, allowing the
ridge of high pressure over the desert southwest to strengthen.

This will kick off a warming trend through the rest of the week
and into the coming weekend. A broad upper trough over british
columbia and an upper low well to the west of california will
prevent the aforementioned ridge from strengthening enough to
cause any significant warming. Most locations will remain near
seasonal normals through the week. This translates to afternoon
high temperatures in the 60s to low 70s along the coast and 80s to
90s inland. Overnight and morning low clouds are expected to
continue as well.

Looking into the medium range, CPC outlooks continue to show near
normal temperatures over california. This morning's 8-14 day
outlook even shows below normal temperatures for much of the west
coast.

Aviation As of 10:50 am pdt Tuesday... A very deep marine
settled into the coastal valleys overnight, bringing widespread
ifr-MVFR CIGS to the terminals. While the marine layer is
gradually eroding from the top and bottom, it is very likely
several areas will remain under at least MVFR CIGS thru the day.

This is a result of a deep upstream feed pushing onshore as well
as the arrival of a broad smoke plume from canada pacnw. This
smoke plume is filled with tiny particulates that will act as
condensation nuclei, increasing the likelihood of clouds over the
area. In addition, this smoke will cause the skies to become hazy
and reduce visbys, especially slant wise, thru the next day or
so. Winds generally light onshore to locally breezy through
coastal gaps.

Vicinity of ksfo... Moderate confidence of all day stratus event,
with lowering CIGS after 03z. Breezy onshore winds up to around
16kt by the afternoon. Smoke may reduced slant range and
horizontal vsbys over area terminals this week.

Sfo bridge approach... Moderate to poor slant range visibility for
the period. Otherwise similar to ksfo.

Monterey bay terminals... Moderate confidence of all day stratus
event, with lowering CIGS after 02z. Smoke may reduced slant
range and horizontal vsbys over area terminals this week.

Marine As of 08:53 am pdt Tuesday... A weak pressure gradient
across the region will maintain generally light west to
northwesterly winds over the coastal waters through much of the
week. Winds will increase over the northern waters late in the
week and into the weekend. Light mixed swell.

Mtr watches warnings advisories
Tngt None.

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
LNDC1 1 mi31 min W 4.1 G 8 63°F 1015.4 hPa
AAMC1 - 9414750 - Alameda, CA 1 mi31 min W 6 G 8 63°F 67°F1015.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 3 mi31 min WSW 8 G 8.9
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi31 min W 4.1 G 7 64°F 1015.5 hPa
OBXC1 4 mi31 min 63°F 59°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 6 mi31 min WSW 4.1 G 9.9 64°F 1014.6 hPa
PXSC1 6 mi31 min 64°F 58°F
FTPC1 - 9414290 - San Francisco, CA 10 mi31 min 1015.9 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 10 mi31 min SW 8 G 9.9 61°F 1015.8 hPa
RCMC1 - 9414863 - Richmond, CA 12 mi31 min SW 6 G 8.9 61°F 63°F1015.4 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi26 min NNW 1.9 60°F 1016 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi31 min SW 12 G 14 63°F 1014.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi31 min WSW 9.9 G 16 64°F 68°F1014.8 hPa60°F
RTYC1 - 9414523 - Redwood City, CA 19 mi31 min WNW 12 G 15 66°F 72°F1015.7 hPa
46237 - San Francisco Bar, CA (142) 19 mi61 min 57°F3 ft
PCOC1 - 9415144 - Port Chicago, CA 23 mi31 min W 17 G 21 64°F 68°F1014.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi31 min NW 14 G 19 68°F 1013.5 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi21 min S 9.7 G 12 57°F 57°F1016.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 32 mi76 min W 13 68°F 1014 hPa56°F
PRYC1 - 9415020 - Point Reyes, CA 40 mi31 min ESE 2.9 G 5.1 58°F1015.3 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi71 min SSE 7.8 G 9.7 58°F 59°F4 ft1015.9 hPa (+0.0)

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA6 mi68 minWNW 710.00 miOvercast64°F55°F75%1015.6 hPa
Hayward, Hayward Air Terminal, CA12 mi67 minW 810.00 miOvercast66°F55°F68%1016.4 hPa
San Francisco, San Francisco International Airport, CA12 mi65 minWSW 1010.00 miOvercast66°F55°F68%1015.3 hPa
San Carlos Airport, CA17 mi74 minWNW 13 G 1610.00 miMostly Cloudy68°F55°F64%1015.2 hPa
Concord, Buchanan Field, CA18 mi68 minW 1310.00 miPartly Cloudy71°F54°F55%1013.2 hPa
Half Moon Bay Airport, CA22 mi61 minSW 810.00 miOvercast59°F57°F94%1016.3 hPa
Palo Alto Airport, CA22 mi3.2 hrsN 810.00 miMostly Cloudy0°F0°F%1016.3 hPa

Wind History from OAK (wind in knots)
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Last 24hrNW10W11W12W11W11W8W6W8--W8W7W10W10W15W9W8SW8W6W6W7W6SW4W6W7
1 day agoW18W19W16W16W15NW12W5NW7N3CalmN3N3NE3W9W8W9W9W8W7W6W8W6W8W12
2 days agoW13NW11NW13NW12W13NW9W13NW7W9NW8NW7NW5NW5NW7NW6NW5NW3NW3W4W4W5W6NW9NW14

Tide / Current Tables for Oakland Inner Harbor, San Francisco Bay, California
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Oakland Inner Harbor
Click for Map
Tue -- 02:13 AM PDT     Moonset
Tue -- 03:40 AM PDT     0.43 feet Low Tide
Tue -- 06:29 AM PDT     Sunrise
Tue -- 10:47 AM PDT     5.07 feet High Tide
Tue -- 03:28 PM PDT     2.84 feet Low Tide
Tue -- 04:59 PM PDT     Moonrise
Tue -- 07:53 PM PDT     Sunset
Tue -- 09:22 PM PDT     6.49 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.52.21.10.50.50.81.52.43.44.34.95.14.743.32.92.93.44.25.166.56.45.7

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

Tue -- 02:13 AM PDT     Moonset
Tue -- 02:43 AM PDT     0.00 knots Slack
Tue -- 06:29 AM PDT     Sunrise
Tue -- 07:50 AM PDT     0.29 knots Max Flood
Tue -- 10:22 AM PDT     -0.00 knots Slack
Tue -- 12:57 PM PDT     -0.15 knots Max Ebb
Tue -- 02:40 PM PDT     0.00 knots Slack
Tue -- 04:59 PM PDT     Moonrise
Tue -- 07:25 PM PDT     0.20 knots Max Flood
Tue -- 07:53 PM PDT     Sunset
Tue -- 09:34 PM PDT     -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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-0.3-0.3-0.100.10.20.20.30.30.20.1-0.1-0.1-0.2-0.100.10.10.20.20.20.1-0.1-0.3

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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Other links: Northern Pacific     Contential US     Full GOES-East
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.