Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Foster City, 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 5:49AMSunset 8:35PM Wednesday June 28, 2017 12:13 AM PDT (07:13 UTC) Moonrise 10:01AMMoonset 11:15PM Illumination 18% 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- 900 Pm Pdt Tue Jun 27 2017
.small craft advisory in effect until 11 pm pdt tonight...
.small craft advisory in effect from Wednesday morning through Wednesday evening...
Tonight..SW winds 10 to 20 kt. Patchy fog after midnight.
Wed..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Patchy fog in the morning.
Wed night..SW winds 15 to 25 kt...becoming S 5 to 15 kt after midnight. Patchy fog after midnight.
Thu..SW winds 10 to 20 kt. Patchy fog in the morning.
Thu night..SW winds 10 to 20 kt. Patchy fog after midnight.
Fri..SW winds 15 to 25 kt...decreasing to 5 to 15 kt. Patchy fog.
Sat..SW winds 5 kt...increasing to 5 to 15 kt. Patchy fog.
Sun..SW winds 5 to 15 kt. Patchy fog.
PZZ500 900 Pm Pdt Tue Jun 27 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure will continue to build into the eastern pacific through the rest of the week. As such, moderate to strong northerly winds will continue to increase over the waters and bays through the majority of the forecast period. Southerly swell and wind driven waves will dominate and persist through Wednesday morning.

7 Day Forecast for Marine Location Near Foster City city, CA
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location: 37.55, -122.24     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 280549
afdmtr
area forecast discussion
national weather service san francisco bay area
1049 pm pdt Tue jun 27 2017

Synopsis Seasonably cool temperatures can be expected today
with a very gradual warming trend through Friday as a ridge
builds into our region. Outside of drizzle, dry weather the next
7 days with night and morning coastal clouds followed by sunny
afternoons is forecast.

Discussion As of 7:37 pm pdt Tuesday... An onshore wind
continues this evening with a weak upper level trough residing
over norcal. Average temperatures today were within two to three
degrees of normal for this day; it was a nice late june day in the
bay area. Low clouds will continue to spread inland tonight as
the marine layer is nearly 3,000 feet deep. Otherwise not too
much change indicated for the near term.

Prev discussion As of 1:03 pm pdt Tuesday... Visible satellite
shows the morning stratus continuing to clear out across most
inland areas. A few locations remain impacted with low clouds as
of 1 pm pdt, including san francisco and oakland airports. The san
francisco to sacramento surface pressure gradient has increased
slightly from what it was at 24 hours ago (2.6 mb vs. 2.1 mb), and
the marine layer is a bit deeper between 2,000 and 2,500 ft.

Expect skies to continue to improve through the middle of the
afternoon.

Synoptically we still have an upper level high centered over baja
california that is enabling hot and dry conditions to persist
over the southern third of the golden state. Closer to our area,
temperatures are much cooler than they were several days ago with
zonal flow overhead and onshore flow. Expect temperatures to reach
the upper 50s to the low 70s along the coast, and 70s to middle
80s across the inland valleys and mountains. The santa lucia
range, southern salinas valley, and pinnacles national park areas
will likely see temperatures MAX out in the upper 80s to the low
90s this afternoon.

On Wednesday temperatures will nudge upward a few degrees for most
inland areas as high pressure begins to rebuild over the west
coast. This gradual warming trend will continue through Friday
with temperatures within a few degrees of normal for the end of
june. Coastal areas may see subtle warming through the end of the
week, but by only several degrees at most. Models are advertising
a short wave trough to push onshore for the weekend that would
bring some cooling to the area. Aside the isolated coastal drizzle
associated with morning marine stratus, dry conditions are
expected to continue for the foreseeable future.

Aviation As of 10:43 pm pdt Tuesday... For 06z tafs. Low clouds
have begun to fill back in over the bays and valleys through the
coastal gaps and canyons. Widespread low clouds are expected
through tonight and into the morning hours. Clouds will clear back
to the coast around 17z-18z Wednesday. Moderate onshore flow will
continue to diminish overnight.

Moderate confidence.

Vicinity of ksfo... MVFR CIGS will lower to ifr after 08z tonight.

Cigs anticipated to clear around 17z Wednesday morning. Moderate
onshore flow will gradually diminish overnight.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr lifr conditions will lower to lifr
overnight. Anticipated skies to clear around 17z-18z Wednesday
morning. Moderate onshore flow will continue to diminish
through the night.

Marine As of 9:00 pm pdt Tuesday... High pressure will continue
to build into the eastern pacific through the rest of the week.

As such, moderate to strong northerly winds will continue to
increase over the waters and bays through the majority of the
forecast period. Southerly swell and wind driven waves will
dominate and persist through Wednesday morning.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Sf bay until 11 pm
public forecast: canepa rowe
aviation marine: cw
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 3 mi43 min W 13 G 16 58°F 72°F1014.1 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi43 min WSW 8.9 G 13 58°F 68°F1014.8 hPa
LNDC1 17 mi43 min WSW 8 G 9.9 58°F 1014.3 hPa
OBXC1 18 mi43 min 57°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi43 min WSW 12 G 20
PXOC1 - 9414311 - San Francisco (Pier 1), CA 19 mi43 min S 5.1 G 13 57°F 1013 hPa
PXSC1 19 mi43 min 58°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 19 mi43 min WSW 8 G 12 58°F 1014.3 hPa
FTPC1 - 9414290 - San Francisco, CA 21 mi43 min WSW 8 G 17 56°F 59°F1014.2 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 25 mi43 min SSW 11 G 16 59°F 1013.8 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 26 mi51 min SSW 9.9 56°F 1014 hPa
46237 - San Francisco Bar, CA (142) 26 mi73 min 58°F4 ft
RCMC1 - 9414863 - Richmond, CA 27 mi43 min S 6 G 8 58°F 64°F1013.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 34 mi43 min WSW 8.9 G 12 60°F 69°F1013.1 hPa56°F
UPBC1 34 mi43 min W 9.9 G 14
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 35 mi83 min WNW 16 G 21 57°F 57°F5 ft1014.3 hPa (+0.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 35 mi43 min WSW 14 G 19 59°F 1012.8 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 36 mi83 min NW 14 G 16 57°F 57°F5 ft1014.8 hPa (+0.6)
PCOC1 - 9415144 - Port Chicago, CA 37 mi43 min SSW 9.9 G 14 58°F 70°F1012.3 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 39 mi43 min WNW 12 G 16 63°F 1011.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 46 mi88 min W 8.9 58°F 1012 hPa54°F

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Carlos Airport, CA1 mi18 minW 810.00 miOvercast57°F53°F88%1014.9 hPa
Palo Alto Airport, CA8 mi3.4 hrsNW 1310.00 miA Few Clouds59°F55°F88%1013.9 hPa
San Francisco, San Francisco International Airport, CA8 mi17 minW 1010.00 miOvercast59°F52°F78%1014.3 hPa
Oakland, Metro Oakland International Airport, CA10 mi20 minW 1310.00 miOvercast60°F54°F80%1014.4 hPa
Hayward, Hayward Air Terminal, CA10 mi19 minW 1110.00 miOvercast60°F51°F72%1015.3 hPa
Mountain View, Moffett Field, CA13 mi17 minN 010.00 miMostly Cloudy58°F53°F84%1014.9 hPa
Half Moon Bay Airport, CA14 mi18 minNW 910.00 miOvercast57°F53°F88%1015.2 hPa
San Jose, San Jose International Airport, CA21 mi20 minWNW 810.00 miMostly Cloudy60°F55°F84%1014.4 hPa

Wind History from SQL (wind in knots)
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Last 24hrW6W7W5W6W6W7W5W5NW5CalmW6W9SW9--W10W13
G17
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1 day agoW5W5W3W6CalmCalmW3W4NW5NW5N7W10NW12
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2 days agoNW8NW7NW6NW7NW8NW7NW7W8NW7--N10N12N10
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G21
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G18
W9W7W4W3

Tide / Current Tables for Bay Slough, west end, San Francisco Bay, California
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Bay Slough
Click for Map
Wed -- 03:47 AM PDT     7.68 feet High Tide
Wed -- 05:50 AM PDT     Sunrise
Wed -- 11:00 AM PDT     Moonrise
Wed -- 11:03 AM PDT     -0.63 feet Low Tide
Wed -- 05:40 PM PDT     7.36 feet High Tide
Wed -- 08:34 PM PDT     Sunset
Wed -- 11:45 PM PDT     2.25 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.24.66.17.37.77.264.32.50.8-0.2-0.6-0.212.64.46.17.17.36.75.64.33.12.4

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Wed -- 01:47 AM PDT     1.36 knots Max Flood
Wed -- 04:55 AM PDT     -0.01 knots Slack
Wed -- 05:50 AM PDT     Sunrise
Wed -- 08:26 AM PDT     -1.84 knots Max Ebb
Wed -- 11:00 AM PDT     Moonrise
Wed -- 11:51 AM PDT     0.01 knots Slack
Wed -- 02:45 PM PDT     1.90 knots Max Flood
Wed -- 06:25 PM PDT     -0.00 knots Slack
Wed -- 08:34 PM PDT     Sunset
Wed -- 09:11 PM PDT     -1.11 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.61.21.31.10.6-0.1-0.8-1.4-1.8-1.7-1.3-0.70.21.11.81.91.71.20.4-0.4-0.9-1.1-1-0.7

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 (3,6,7,8)
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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.