Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Ladera, 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 6:28AMSunset 7:54PM Sunday August 20, 2017 1:54 PM PDT (20:54 UTC) Moonrise 4:14AMMoonset 6:22PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 831 Am Pdt Sun Aug 20 2017
.small craft advisory in effect from 1 pm pdt this afternoon through this evening...
Today..SW winds 10 kt in the morning increasing to 15 to 25 kt in the afternoon. Patchy fog late in the morning.
Tonight..SW winds 15 to 25 kt in the evening decreasing to 10 to 20 kt overnight. Patchy fog after midnight.
Mon..SW winds 10 to 20 kt. Patchy fog in the morning.
Mon night..SW winds 15 to 25 kt. Patchy fog after midnight.
Tue..SW winds 10 to 20 kt. Patchy fog in the morning.
Wed..SW winds 10 kt.
Thu..SW winds 10 kt.
PZZ500 831 Am Pdt Sun Aug 20 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Expect moderate northwest winds to continue over the northern outer waters through tonight. Accompanying breezy winds will aid in producing locally steep wind waves before winds begin to subside tonight.

7 Day Forecast for Marine Location Near Ladera, CA
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location: 37.4, -122.21     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 201740
afdmtr
area forecast discussion
national weather service san francisco bay area
1040 am pdt Sun aug 20 2017

Synopsis Cooling will continue early this week as an upper
trough of low pressure becomes nearly stationary over the eastern
pacific. Coastal areas will see little in the way of change with
continued night and morning low clouds and patchy fog.

Discussion As of 8:15 am pdt Sunday... Widspread clouds this
morning thanks to a deep marine layer and a weak onshore flow at
the surface. Clouds should burn-off toward the coast by late in
the morning. High temperature range will be much less than a
typical august day. Inland most spots will just be in the mid 70s
to the upper 80s while at the coast many areas will be in the 60s
and 70s.

Current forecast appears on track. No major updates planned
although may do a minor update in a bit with information on clouds
for tomorrow morning during the eclipse.

Previous discussion A nearly stationary upper level closed low
will remain along the central coast through early to mid week.

Cooler temperatures will continue this week with comfortable day
time highs expected most places with only far inland locations
experiencing warm to hot temperatures. Wildfire smoke from the
pacific northwest began to mix into the air over the bay area and
central coast yesterday. Widespread low clouds and fog over the
coastal waters will be ushered inland this morning on onshore
breezes with returning low clouds and fog again tonight and Monday
morning. Cloud coverage mid-late Monday morning will be
challenging to predict much of it depending upon the depth and
strength of the marine layer, though of course, the farther inland
one is the better chances there are for clear skies during the
solar eclipse. Patchy high clouds are possible over the area
Monday as well. Medium range forecasts indicate some strengthening
of an upper level high over the desert southwest and california.

Aviation As of 10:40 am pdt Sunday for 18z tafs. Visible
satellite shows this morning's overcast skies continuing to mix-
out. ExpectVFR conditions at all terminals by late morning,
though monterey bay terminals could be a bit later. Haze and smoke
could cause visibilities to lower a bit, but confidence is too
low for any given terminal to include in the taf. Depth of the
marine layer continues to climb as an upper level low sits off the
southern california coast. Expect the return of the clouds
overnight.

Vicinity of ksfo...VFR conditions expected to prevail through the
day with increasing west wind around 15 kt this afternoon. Expect
a return to MVFR conditions overnight.

Sfo bridge approach... Webcams this morning reveal haze and smoke
associated with northern california and oregon wildfires. Limited
slant range likely through the day. Otherwise, similar to ksfo.

Monterey bay terminals... MVFR ifr CIGS at kmry and ksns this
morning will likely transition toVFR for the afternoon. Some
guidance suggests kmry may remain locked in bkn ovc conditions
through the day, but currently leaning on persistence from
yesterday in the taf. Will amend if necessary.

Marine As of 10:30 am pdt Sunday... Expect moderate northwest
winds to continue over the northern outer waters through tonight.

Accompanying breezy winds will aid in producing locally steep wind
waves before winds begin to subside tonight.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt pinos to pt piedras blancas 0-10 nm from 11 am
sca... Sf bay from 1 pm
public forecast: bell canepa
aviation: rowe
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 7 mi55 min N 8 G 8.9 68°F 72°F1011.8 hPa (-0.5)
AAMC1 - 9414750 - Alameda, CA 26 mi55 min WNW 4.1 G 8 70°F 67°F1013 hPa (-0.4)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 28 mi55 min NW 11 G 12
LNDC1 28 mi55 min NW 7 G 12 68°F 1012.7 hPa (+0.0)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 29 mi55 min W 8 G 14 68°F 1011.7 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 29 mi55 min NW 12 G 14 64°F 1012.7 hPa (-0.3)
OBXC1 29 mi55 min 64°F 59°F
PXSC1 30 mi55 min 68°F 58°F
FTPC1 - 9414290 - San Francisco, CA 31 mi55 min WSW 8.9 G 19 64°F 62°F1013.3 hPa (+0.0)
46237 - San Francisco Bar, CA (142) 35 mi55 min 60°F4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 36 mi68 min SSW 4.1 65°F 1013 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 36 mi65 min SSE 12 G 14 61°F 62°F7 ft1012.6 hPa (+0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 36 mi55 min WSW 9.9 G 17 66°F 1013.2 hPa (+0.0)
RCMC1 - 9414863 - Richmond, CA 38 mi55 min WNW 2.9 G 9.9 64°F 65°F1012.8 hPa (+0.0)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi65 min S 9.7 G 12 60°F 58°F5 ft1013.4 hPa (+0.4)
MZXC1 - 9415102 - Martinez-Amorco CA 44 mi55 min W 16 G 19 68°F 69°F1012 hPa (-0.8)60°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 44 mi65 min SSE 9.7 G 12 61°F 60°F7 ft1013.2 hPa (+0.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 45 mi55 min WSW 12 G 16 66°F 1012.3 hPa (-0.4)
46092 - MBM1 46 mi113 min SE 7.8 61°F 60°F1013.6 hPa (+0.3)
PCOC1 - 9415144 - Port Chicago, CA 46 mi55 min W 18 G 21 69°F 69°F1011.5 hPa (-0.8)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 47 mi55 min NW 16 G 21 71°F 1010.7 hPa (-0.8)
46114 - West Monterey Bay, CA 47 mi55 min 61°F6 ft
ELXC1 - Elkhorn Slough Reserve, CA 48 mi70 min WNW 9.9 66°F 1013 hPa59°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palo Alto Airport, CA7 mi68 minN 1010.00 miClear73°F60°F65%1012.2 hPa
San Carlos Airport, CA9 mi60 minNNE 910.00 miA Few Clouds70°F59°F69%1012.5 hPa
Mountain View, Moffett Field, CA9 mi59 minN 1010.00 miFair78°F59°F52%1012.2 hPa
San Jose, San Jose International Airport, CA15 mi62 minW 310.00 miA Few Clouds78°F57°F48%1011.5 hPa
San Francisco, San Francisco International Airport, CA17 mi59 minN 1010.00 miA Few Clouds68°F57°F70%1012.4 hPa
Half Moon Bay Airport, CA17 mi60 minS 14 G 219.00 miMostly Cloudy64°F0°F%1012.5 hPa
Hayward, Hayward Air Terminal, CA19 mi61 minW 710.00 miFair73°F54°F51%1013.1 hPa
San Jose / Reid / Hillv, CA21 mi68 minVar 410.00 miClear81°F57°F45%1012.2 hPa
Oakland, Metro Oakland International Airport, CA21 mi62 minWNW 1110.00 miA Few Clouds72°F59°F64%1012.5 hPa

Wind History from PAO (wind in knots)
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Last 24hrN10NW11NW15NW15N17N12NW10N12------------------44W55N6N7N10
1 day agoN10----NW12NW15NW10NW11N11------------------CalmCalmCalmNW7N7N10N10
2 days agoN12N12N11N11N15N13N12NW12------------------N8N9N6N6N6NW8N10

Tide / Current Tables for Redwood City, Wharf 5, San Francisco Bay, California (sub)
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Redwood City
Click for Map
Sun -- 05:13 AM PDT     Moonrise
Sun -- 06:16 AM PDT     -0.79 feet Low Tide
Sun -- 06:29 AM PDT     Sunrise
Sun -- 12:52 PM PDT     7.82 feet High Tide
Sun -- 06:13 PM PDT     2.15 feet Low Tide
Sun -- 07:22 PM PDT     Moonset
Sun -- 07:54 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.58.26.23.81.5-0.1-0.8-0.50.62.24.267.47.87.25.84.22.82.22.53.85.67.69.2

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Sun -- 04:32 AM PDT     -1.57 knots Max Ebb
Sun -- 05:13 AM PDT     Moonrise
Sun -- 06:28 AM PDT     Sunrise
Sun -- 07:14 AM PDT     0.00 knots Slack
Sun -- 10:03 AM PDT     1.73 knots Max Flood
Sun -- 01:14 PM PDT     -0.01 knots Slack
Sun -- 05:10 PM PDT     -0.91 knots Max Ebb
Sun -- 07:14 PM PDT     0.01 knots Slack
Sun -- 07:21 PM PDT     Moonset
Sun -- 07:53 PM PDT     Sunset
Sun -- 09:50 PM PDT     1.41 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.6-1-1.4-1.5-1.5-1.1-0.20.81.51.71.610.2-0.3-0.6-0.8-0.9-0.8-0.20.61.21.41.2

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 (16,3,4,5)
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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.