Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Belmont, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:23AMSunset 7:51PM Saturday April 21, 2018 2:45 AM PDT (09:45 UTC) Moonrise 10:15AMMoonset 12:02AM Illumination 35% Phase: Waxing Crescent; Moon at 6 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 222 Am Pdt Sat Apr 21 2018
Today..SE winds 5 kt...becoming W 5 to 15 kt in the afternoon.
Tonight..W winds 5 to 15 kt.
Sun..W winds 5 to 15 kt.
Sun night..NW winds 5 to 15 kt.
Mon..W winds 5 to 15 kt.
Tue..SW winds 10 kt.
Wed..SW winds 10 kt.
PZZ500 222 Am Pdt Sat Apr 21 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Continued breezy northwest winds are expected over the coastal waters this weekend as high pressure remains over the eastern pacific. Steep wind waves and fresh swell will result in hazardous seas likely over the weekend and possibly into early next week.

7 Day Forecast for Marine Location Near Belmont, CA
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location: 37.52, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 210527
afdmtr
area forecast discussion
national weather service san francisco bay area
1027 pm pdt Fri apr 20 2018

Synopsis A warming trend and dry weather are forecast through
the upcoming weekend. A weak low pressure system may impact the
region with increased clouds and showers late next week.

Discussion As of 9:00 pm pdt Friday... An upper level ridge
moving over the area brought 5 to 10 degrees of warming over
yesterday. The exception was along the coast south where onshore
flow and patchy low clouds kept temperatures cooler.

Surface high over the eastern pacific will build into the pacific
northwest coast tonight and Saturday bringing a dry light
northerly flow over the area. This will result in a few degrees
of warming in all areas Saturday. High temperatures will
generally be in the mid 60s to low 70s coast and upper 70s to
upper 80s inland.

The ridge will weaken as an upper level trough passes to the
north of the district. This will put a halt to the warming into
early next week.

Medium range models show a cutoff low forming off the california
coast the middle of next week bringing cooler weather and possibly
a few showers.

Aviation As of 10:27 pm pdt Friday...VFR, with mainly clear skies,
will prevail through the overnight with exception of MVFR ifr along
the immediate coastline.

Vicinity of ksfo...VFR. Winds are forecast to diminish after sunset.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Low clouds developing again tonight, but
confidence low regarding timing and coverage. Light onshore winds
overnight.

Marine As of 10:23 pm pdt Friday... Gusty northwest winds will
prevail through the weekend over the coastal waters as high pressure
remains over the eastern pacific. Steep wind waves and fresh swell
will result in hazardous seas likely through the weekend and into
early next week.

Mtr watches warnings advisories
Tngt Sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pt reyes 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
public forecast: W pi
aviation: canepa
marine: bam
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 4 mi45 min S 4.1 G 5.1 54°F 63°F1021.9 hPa (-0.5)
AAMC1 - 9414750 - Alameda, CA 17 mi45 min SSW 8 G 8.9 55°F 62°F1021.7 hPa (-0.4)
LNDC1 19 mi45 min S 5.1 G 7 54°F 1021.5 hPa (-0.4)
OBXC1 20 mi45 min 54°F 50°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 20 mi45 min Calm G 4.1 53°F 1020.6 hPa (+0.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA 20 mi45 min SW 5.1 G 6 54°F 1021.6 hPa (-0.3)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 20 mi45 min SW 6 G 7
PXSC1 21 mi45 min 54°F 48°F
FTPC1 - 9414290 - San Francisco, CA 22 mi45 min SSW 4.1 G 8 52°F 55°F1021.6 hPa (+0.0)
46237 - San Francisco Bar, CA (142) 26 mi45 min 53°F6 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 27 mi46 min SSW 8.9 52°F 1021 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 27 mi45 min SE 7 G 11 56°F 1021.6 hPa (-0.3)
RCMC1 - 9414863 - Richmond, CA 29 mi45 min SSE 8.9 G 12 55°F 58°F1021.1 hPa (+0.0)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 34 mi55 min NW 18 G 21 52°F 52°F8 ft1021.4 hPa (+0.0)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 34 mi55 min NNW 18 G 21 53°F 53°F8 ft1021.9 hPa (-0.3)
MZXC1 - 9415102 - Martinez-Amorco CA 37 mi45 min SW 5.1 G 5.1 55°F 59°F1020.7 hPa (+0.0)55°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi51 min SW 7 G 8 56°F 1020.5 hPa
PCOC1 - 9415144 - Port Chicago, CA 39 mi45 min SW 7 G 11 53°F 60°F1020.3 hPa (+0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 42 mi45 min WNW 8.9 G 11 60°F 1019.5 hPa
PRYC1 - 9415020 - Point Reyes, CA 49 mi45 min WNW 17 G 20 52°F1021.2 hPa (-0.5)
SFXC1 - San Francisco Bay Reserve, CA 49 mi60 min WSW 6 54°F 1020 hPa49°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, CA2 mi50 minN 010.00 miFair54°F46°F77%1021.7 hPa
San Francisco, San Francisco International Airport, CA8 mi1.8 hrsN 010.00 miFair53°F44°F72%1021.8 hPa
Half Moon Bay Airport, CA12 mi50 minN 05.00 miFog/Mist43°F41°F93%1022.7 hPa
Hayward, Hayward Air Terminal, CA13 mi51 minNE 510.00 miFair52°F44°F75%1022.5 hPa
Oakland, Metro Oakland International Airport, CA13 mi52 minS 310.00 miA Few Clouds53°F46°F80%1021.9 hPa
Mountain View, Moffett Field, CA14 mi1.8 hrsSE 310.00 miFair54°F48°F83%1022.3 hPa
San Jose, San Jose International Airport, CA21 mi52 minN 010.00 miFair54°F46°F77%1021.6 hPa

Wind History from SQL (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalm34N54N10W9W11W12W12W12W10S6W5W6W7W6CalmCalm
1 day agoCalmS3CalmW4CalmCalmN3W7W10W11W15W13
G18
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W16W12
G19
W12W8W5CalmCalmCalmS3CalmCalm
2 days agoCalmCalmCalmNW4S4W8W6W5W5N6----SW8SW7SW10SW8W7W6CalmNW6NW5W3W4Calm

Tide / Current Tables for Smith Slough, San Francisco Bay, California
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Smith Slough
Click for Map
Sat -- 01:01 AM PDT     Moonset
Sat -- 05:02 AM PDT     7.70 feet High Tide
Sat -- 06:25 AM PDT     Sunrise
Sat -- 11:15 AM PDT     Moonrise
Sat -- 12:37 PM PDT     -0.59 feet Low Tide
Sat -- 07:32 PM PDT     6.57 feet High Tide
Sat -- 07:49 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.73.44.667.27.77.46.55.13.31.60.3-0.5-0.50.21.42.94.45.76.56.55.94.83.8

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Sat -- 01:01 AM PDT     Moonset
Sat -- 02:36 AM PDT     1.02 knots Max Flood
Sat -- 05:33 AM PDT     -0.00 knots Slack
Sat -- 06:25 AM PDT     Sunrise
Sat -- 09:28 AM PDT     -1.73 knots Max Ebb
Sat -- 11:15 AM PDT     Moonrise
Sat -- 01:00 PM PDT     0.01 knots Slack
Sat -- 03:57 PM PDT     1.60 knots Max Flood
Sat -- 07:50 PM PDT     Sunset
Sat -- 07:52 PM PDT     -0.01 knots Slack
Sat -- 10:18 PM PDT     -0.75 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.50.910.70.3-0.2-0.8-1.3-1.7-1.7-1.2-0.6-00.81.41.61.51.10.6-0.1-0.5-0.7-0.7

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (5,6,7,8)
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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.