Friday, October19, 2018 L-36.com


Marine Weather and Tides
Moss Beach, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:21AMSunset 6:27PM Friday October 19, 2018 5:37 PM PDT (00:37 UTC) Moonrise 3:17PMMoonset 1:20AM Illumination 80% 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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PZZ545 Point Reyes To Pigeon Point To 10 Nm- 228 Pm Pdt Fri Oct 19 2018
Tonight..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 3 to 5 ft at 12 seconds.
Sat..W winds 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft at 12 seconds.
Sat night..NW winds 10 kt. Wind waves 2 ft or less. NW swell 2 to 3 ft at 12 seconds.
Sun..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 2 to 3 ft at 12 seconds.
Sun night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 2 to 4 ft at 12 seconds.
Mon..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
Tue..NW winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog.
Wed..NW winds 10 kt. Wind waves 2 ft or less. W swell 5 to 6 ft. Patchy fog.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 4 to 6 ft with a dominant period of 15 seconds. Across the bar...combined seas 5 to 7 ft with a dominant period of 15 seconds. Maximum ebb current of 1.5 knots at 01:01 am Saturday and 2.1 knots at 01:43 pm Saturday.
PZZ500 228 Pm Pdt Fri Oct 19 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure over the great basin and the eastern pacific will weaken through the weekend and early next week. Generally winds will be light to locally breezy northwesterly and swell moderate period mixed northwesterly and southwesterly.


7 Day Forecast for Marine Location Near Moss Beach, CA
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location: 37.51, -122.56     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 192320
afdmtr
area forecast discussion
national weather service san francisco bay area
420 pm pdt Fri oct 19 2018

Synopsis Sunny and warm with a only a few degrees of cooling
through the weekend. More noted cooling to return early next week
as fronts pass to our north with increasing onshore flow and a
cooling airmass. Any light rain from these fronts will likely
stay north of sonoma county next week while high pressure builds
over southern and central california by the second half.

Discussion As of 1:52 pm pdt Friday... The combination of
building high pressure, sunny skies and light offshore flow
inland has resulted warmer temperatures across the board this
afternoon. Current temperatures are ranging from the mid 60s at
the coast to the mid to upper 70s around the bays, with 80s well
inland. Current readings are from 3 to 11 degrees warmer than they
were yesterday at this time. Surface pressure gradients are
trending stronger offshore with wmc to sfo now 6.9 mb, and sfo to
sac now -0.2 mb.

The upper level high pressure ridge over california will maintain
warm conditions through Saturday with a gradual cooling trend
beginning on Sunday and persisting through midweek as low
pressure systems move across the pacific northwest. Latest model
guidance keeps all rain chances north of our CWA through the
forecast period, though.

Another ridge is forecast to approach california from the eastern
pacific late in the week ushering in another warming trend by next
weekend. The latest run of the ECMWF hints at another upper
trough possibly affecting northern california by the end of the
month... We'll see, although climatologically, this timing checks
out.

Aviation As of 04:20 pm pdt Friday... For 00z tafs. A
compressed marine layer has led to mainly clear skies across the
region with some stratus offshore.VFR conditions expected through
the period aside from some possible patchy low clouds along the
coast. Patchy fog possible again early tomorrow morning in the
north bay.

Vicinity of ksfo...VFR with some patchy low clouds possible early
tomorrow morning.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR. Patchy low stratus ceilings may
return into tomorrow morning.

Marine As of 02:28 pm pdt Friday... High pressure over the
great basin and the eastern pacific will weaken through the
weekend and early next week. Generally winds will be light to
locally breezy northwesterly and swell moderate period mixed
northwesterly and southwesterly.

Mtr watches warnings advisories
Tngt None.

Public forecast: sims
aviation: as
marine: canepa
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 18 mi37 min N 8 G 8.9 74°F 68°F1017.4 hPa (-1.7)
46237 - San Francisco Bar, CA (142) 19 mi67 min 60°F5 ft
FTPC1 - 9414290 - San Francisco, CA 21 mi37 min WSW 13 G 18 60°F 61°F1017.4 hPa (-1.6)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 22 mi37 min NW 18 G 21 56°F 58°F1018.3 hPa (-1.4)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi37 min W 8 G 11 71°F 1016 hPa (-1.7)
PXSC1 22 mi37 min 71°F 50°F
AAMC1 - 9414750 - Alameda, CA 23 mi37 min W 8.9 G 9.9 69°F 64°F1017.3 hPa (-1.4)
OBXC1 23 mi37 min 68°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 24 mi37 min W 8.9 G 11
OKXC1 - 9414776 - Oakland (Berth 34), CA 24 mi37 min WNW 5.1 G 7 68°F 1016.9 hPa (-1.7)
LNDC1 25 mi37 min NW 6 G 7 74°F 1017 hPa (-1.5)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi104 min Calm 77°F 1018 hPa (-2.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 29 mi37 min SW 6 G 8 67°F 1017.4 hPa (-1.5)
RCMC1 - 9414863 - Richmond, CA 30 mi37 min SE 2.9 G 4.1 68°F 62°F1016.7 hPa (-1.7)
PRYC1 - 9415020 - Point Reyes, CA 40 mi37 min NW 12 G 15 60°F1018 hPa (-1.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 41 mi37 min WSW 1.9 G 2.9 71°F 1016.4 hPa (-1.8)
MZXC1 - 9415102 - Martinez-Amorco CA 43 mi37 min W 5.1 G 5.1 76°F 65°F1016.6 hPa (-2.0)
PCOC1 - 9415144 - Port Chicago, CA 47 mi37 min W 2.9 G 6 80°F 65°F1016.4 hPa (-2.0)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA13 mi41 minWNW 1610.00 miFair67°F52°F59%1016.7 hPa
San Carlos Airport, CA16 mi50 minNNW 510.00 miClear with Haze79°F50°F37%1016.9 hPa
Oakland, Metro Oakland International Airport, CA22 mi44 minWNW 710.00 miFair73°F53°F50%1016.9 hPa
Palo Alto Airport, CA23 mi1.8 hrsno data10.00 miClear75°F55°F50%1017.6 hPa

Wind History from HAF (wind in knots)
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Last 24hrS7NW17
G23
CalmS6S4SE6SE8SE5S4E3CalmS4S3CalmCalmNW3CalmNW4NW5N4NW3S3S4SW5
1 day agoS7S6W5SW3CalmSE3E3CalmNW4CalmS3SW6CalmNW3CalmCalmCalmNW3N3NW4CalmSE9S4S6
2 days agoNW5NW4W4W3NW4N3CalmCalmCalmCalmCalmCalmE3CalmNE3CalmCalmSE5SE4CalmS3S8Calm--

Tide / Current Tables for Half Moon Bay, California
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Half Moon Bay
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Fri -- 01:35 AM PDT     0.75 feet Low Tide
Fri -- 02:20 AM PDT     Moonset
Fri -- 07:22 AM PDT     Sunrise
Fri -- 08:30 AM PDT     4.68 feet High Tide
Fri -- 02:20 PM PDT     2.26 feet Low Tide
Fri -- 04:16 PM PDT     Moonrise
Fri -- 06:27 PM PDT     Sunset
Fri -- 07:44 PM PDT     4.53 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.20.80.81.21.82.63.54.24.64.64.33.73.12.52.32.32.73.344.44.54.23.62.7

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
Fri -- 12:33 AM PDT     -1.22 knots Max Ebb
Fri -- 02:19 AM PDT     Moonset
Fri -- 04:01 AM PDT     0.00 knots Slack
Fri -- 07:20 AM PDT     0.84 knots Max Flood
Fri -- 07:21 AM PDT     Sunrise
Fri -- 10:22 AM PDT     -0.01 knots Slack
Fri -- 01:26 PM PDT     -0.87 knots Max Ebb
Fri -- 04:15 PM PDT     Moonrise
Fri -- 04:29 PM PDT     0.00 knots Slack
Fri -- 06:26 PM PDT     Sunset
Fri -- 07:20 PM PDT     0.61 knots Max Flood
Fri -- 10:03 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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-1.2-1.2-1-0.6-00.40.70.80.80.60.2-0.3-0.7-0.9-0.8-0.7-0.30.20.50.60.60.40-0.5

Weather Map and Satellite Images
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wmap_P
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 (20,4,5,8)
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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.