Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
South San Francisco, 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 8:36PM Tuesday June 27, 2017 10:22 PM PDT (05:22 UTC) Moonrise 8:56AMMoonset 10:39PM Illumination 17% 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 South San Francisco, CA
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location: 37.65, -122.36     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 280237
afdmtr
area forecast discussion
national weather service san francisco bay area
737 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 4:43 pm pdt Tuesday... For 00z tafs. Widespread
low clouds prevail across the coastal waters at this hour. Low
cloud will push inland this evening and overnight bringing CIGS to
area terminals. CIGS anticipated to lift around 16z-17z Wednesday
morning. Moderate onshore flow will persist through this evening
then diminish overnight.

Moderate confidence.

Vicinity of ksfo...VFR currently over terminals. MVFR CIGS may
drift over the terminals over the next several hours before ifr
cigs fill in. Have included tempo groups to account for this. Cigs
anticipated to clear around 17z Wednesday morning. Moderate
onshore flow around 15-20 kt with gust to around 25 kt will
persist through this evening then diminish overnight.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... CurrentlyVFR over terminals. MVFR cigs
may move in and out over the terminals over the next few hours
before CIGS fill in. Have included tempo groups to account for
this. CIGS are anticipated to lower to ifr after 06z then lifr
after 08z. Anticipated skies to clear around 17z Wednesday
morning. Moderate onshore flow around 15 kt with gust to around
20 kt will persist through this evening then diminish overnight.

Ifr CIGS quickly clearing around mry.

Should be clr at all monterey bay terminals by 18-1830z. Breezy
and occasionally gusty west winds 12-14kt this afternoon. Early
return of stratus for mry, around 03z, and sns around 06z.

Marine As of 07:09 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... 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 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
public forecast: canepa rowe
aviation: cw
marine: bam
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
AAMC1 - 9414750 - Alameda, CA 9 mi52 min W 7 G 13 58°F 68°F1014.4 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 10 mi64 min WSW 13 G 20 57°F 1012.3 hPa
OBXC1 11 mi52 min 58°F 56°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 11 mi52 min WSW 11 G 15 58°F 1013.7 hPa
PXSC1 11 mi52 min 58°F 55°F
LNDC1 11 mi64 min W 9.9 G 13 59°F 1013.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 11 mi52 min WSW 8 G 14
FTPC1 - 9414290 - San Francisco, CA 12 mi52 min WSW 7 G 15 57°F 59°F1013.9 hPa
RTYC1 - 9414523 - Redwood City, CA 13 mi52 min W 13 G 15 58°F 73°F1013.7 hPa
46237 - San Francisco Bar, CA (142) 17 mi52 min 57°F4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 17 mi60 min SSW 9.9 57°F 1013 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 18 mi52 min SW 11 G 13 61°F 1013.2 hPa
RCMC1 - 9414863 - Richmond, CA 19 mi52 min SW 4.1 G 6 60°F 61°F1012.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi92 min WNW 14 G 18 57°F 58°F4 ft1014 hPa (-0.4)
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi52 min W 12 G 15 60°F 69°F1012.6 hPa56°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 29 mi52 min W 11 G 14 62°F 1012.4 hPa
UPBC1 30 mi52 min W 16 G 19
PCOC1 - 9415144 - Port Chicago, CA 33 mi52 min SW 13 G 16 60°F 71°F1012 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 34 mi92 min NW 16 G 19 57°F 56°F4 ft1014.1 hPa (-0.6)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 37 mi52 min W 9.9 G 16 64°F 1010.9 hPa
PRYC1 - 9415020 - Point Reyes, CA 41 mi52 min W 12 G 18 59°F 56°F1013.6 hPa
SFXC1 - San Francisco Bay Reserve, CA 42 mi97 min W 8.9 63°F 1011 hPa55°F

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA2 mi26 minW 1310.00 miOvercast59°F51°F75%1014.2 hPa
Oakland, Metro Oakland International Airport, CA8 mi29 minW 1110.00 miMostly Cloudy60°F54°F80%1014.2 hPa
San Carlos Airport, CA10 mi27 minW 10 G 1410.00 miFair57°F53°F88%1014.6 hPa
Half Moon Bay Airport, CA12 mi27 minNW 710.00 miOvercast57°F53°F88%1014.9 hPa
Hayward, Hayward Air Terminal, CA13 mi28 minW 710.00 miOvercast61°F51°F70%1015 hPa
Palo Alto Airport, CA17 mi95 minNW 1310.00 miA Few Clouds59°F55°F88%1013.9 hPa
Mountain View, Moffett Field, CA22 mi26 minN 810.00 miFair59°F54°F83%1014.7 hPa

Wind History from SFO (wind in knots)
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Last 24hrW12W14W10W14
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1 day agoW10W8W10W6W9W9W5W5W5W5W10W9W11W11W15
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2 days agoW17W165W15W14W12W8W9SW5W10W9W7W11W13W17W15W17W18W19W18W21W18W17
G25
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Tide / Current Tables for Oyster Point Marina, San Francisco Bay, California
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Oyster Point Marina
Click for Map
Wed -- 03:50 AM PDT     6.95 feet High Tide
Wed -- 05:50 AM PDT     Sunrise
Wed -- 10:39 AM PDT     -0.85 feet Low Tide
Wed -- 11:01 AM PDT     Moonrise
Wed -- 05:37 PM PDT     6.81 feet High Tide
Wed -- 08:35 PM PDT     Sunset
Wed -- 11:13 PM PDT     2.21 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.44.65.96.76.96.45.23.41.60.2-0.7-0.8-0.21.12.84.45.86.66.76.14.93.72.72.2

Tide / Current Tables for Oyster Point 2.8 mi E, South San Francisco Bay, California Current
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Oyster Point 2.8 mi E
Click for Map
Wed -- 01:24 AM PDT     0.81 knots Max Flood
Wed -- 04:17 AM PDT     -0.01 knots Slack
Wed -- 05:50 AM PDT     Sunrise
Wed -- 07:55 AM PDT     -1.84 knots Max Ebb
Wed -- 11:00 AM PDT     Moonrise
Wed -- 11:12 AM PDT     0.01 knots Slack
Wed -- 02:22 PM PDT     1.14 knots Max Flood
Wed -- 05:47 PM PDT     -0.00 knots Slack
Wed -- 08:34 PM PDT     Sunset
Wed -- 08:40 PM PDT     -1.11 knots Max Ebb
Wed -- 11:43 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.80.80.50.1-0.5-1.2-1.7-1.8-1.5-1-0.20.50.91.11.10.90.4-0.1-0.7-1.1-1.1-0.8-0.4

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 (1,6,7,8)
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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.