Friday, April20, 2018 L-36.com


Marine Weather and Tides
San Mateo, 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 6:24AMSunset 7:51PM Friday April 20, 2018 8:45 PM PDT (03:45 UTC) Moonrise 9:16AMMoonset 12:00AM Illumination 32% 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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PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 241 Pm Pdt Fri Apr 20 2018
Tonight..SW winds 5 to 15 kt.
Sat..SW winds 5 to 15 kt.
Sat night..SW winds 5 to 15 kt.
Sun..SW winds 5 to 15 kt.
Sun night..SW winds 5 to 15 kt.
Mon..W winds 10 kt.
Tue..N winds 5 kt...becoming sw.
Wed..SW winds 10 kt.
PZZ500 241 Pm Pdt Fri Apr 20 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... 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.

7 Day Forecast for Marine Location Near San Mateo, CA
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location: 37.59, -122.31     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 202354
afdmtr
area forecast discussion
national weather service san francisco bay area
454 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 01:34 pm pdt Friday... Relatively dry weather
is currently forecast through the entire forecast. The only area
of uncertainty is late next week as a weak system approaches
california.

Stubborn stratus continues to linger along the coast keeping
temperatures in check. Away from the coast is a different story
with sunny skies and warmer temperatures. The latest 24 hour
trend indicates many inland locations running 3-8 degrees warmer -
temps in the 60s and mid 70s.

Coastal clouds will be possible again tonight before eroding back
to the coastal waters Saturday. The warming trend noticed today
will continue Saturday and Sunday as 850mb temps warm. High
temperatures will generally be in the mid 60s to low 70s coast
and upper 70s to upper 80s inland. Based on model trends did raise
a few interior locations, especially southern monterey san benito
as temps may eclipse 90 degrees. In short, it will be warm this
weekend, but not the warmest of the year so far. The bay area
already had a warm spell in early february.

Temperatures will cool slightly early next as the ridge of high
pressure weakens ever so slightly. Late next week is still on the
low confidence side as long range models still advertise a cut off
low approaching the region. At this point, precip chances are
small, but more likely is a noticeable cool down. Stay tuned.

Aviation As of 4:54 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. Onshore winds near 10
knots early this evening becoming light overnight.

Marine As of 4:47 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
sca... Mry bay until 9 pm
public forecast: mm
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 8 mi46 min WNW 9.9 G 12 57°F 63°F1021.4 hPa (+0.6)
AAMC1 - 9414750 - Alameda, CA 13 mi46 min W 6 G 8.9 56°F 63°F1020.9 hPa (-0.0)
LNDC1 14 mi46 min WSW 7 G 8.9 57°F 1020.5 hPa (+0.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA 15 mi46 min SSW 4.1 G 5.1 58°F 1020.5 hPa (+0.0)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 15 mi46 min SW 8.9 G 13 56°F 1019.3 hPa (+0.0)
OBXC1 15 mi46 min 57°F 50°F
PXSC1 15 mi46 min 57°F 50°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 15 mi46 min SW 8 G 8.9
FTPC1 - 9414290 - San Francisco, CA 17 mi46 min WSW 9.9 G 15 54°F 53°F1020.6 hPa (-0.3)
46237 - San Francisco Bar, CA (142) 22 mi46 min 53°F6 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 22 mi53 min SW 1.9 60°F 1020 hPa (+0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 22 mi52 min S 5.1 G 7 58°F 1020.5 hPa
RCMC1 - 9414863 - Richmond, CA 24 mi46 min ESE 4.1 G 7 59°F 58°F1019.8 hPa (+0.0)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi56 min NW 18 G 19 52°F 52°F8 ft1021.1 hPa (-0.4)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 32 mi52 min W 6 G 9.9 62°F 1019.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi46 min W 9.9 G 12 64°F 59°F1019.3 hPa (+0.0)48°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 34 mi56 min NW 19 G 23 54°F 54°F8 ft1021.2 hPa (-0.6)
PCOC1 - 9415144 - Port Chicago, CA 35 mi46 min WSW 7 G 8.9 62°F 61°F1019.1 hPa (-0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 38 mi52 min WNW 8 G 12 69°F 1018.6 hPa
PRYC1 - 9415020 - Point Reyes, CA 45 mi46 min WNW 22 G 27 55°F1020.5 hPa (-0.6)
SFXC1 - San Francisco Bay Reserve, CA 45 mi61 min WNW 8 64°F 1019 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 Francisco, San Francisco International Airport, CA3 mi1.8 hrsW 21 G 3110.00 miA Few Clouds and Breezy57°F46°F69%1020.4 hPa
San Carlos Airport, CA5 mi59 minW 1010.00 miClear57°F44°F63%1021 hPa
Oakland, Metro Oakland International Airport, CA9 mi53 minW 1110.00 miA Few Clouds56°F48°F77%1021 hPa
Hayward, Hayward Air Terminal, CA11 mi52 minW 610.00 miFair57°F46°F69%1022.1 hPa
Half Moon Bay Airport, CA11 mi51 minNW 75.00 miFog/Mist52°F48°F88%1022.3 hPa
Palo Alto Airport, CA13 mi59 minNNW 1010.00 miClear0°F0°F%1020.7 hPa
Mountain View, Moffett Field, CA18 mi1.8 hrsN 1310.00 miFair61°F52°F72%1020.7 hPa

Wind History from SFO (wind in knots)
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Last 24hrW9W9W7NW3CalmW3W6W3CalmCalmW4CalmCalmNE4NE4NE4W16W16W21W23W23W24
G28
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1 day agoW8W9W6NW8NW7W9W8W6W8W5W6W6W9W13W16W19W21
G26
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2 days agoW13W8W11W6W8W10W8W7W9W8W5W12W10W8W11W5W12W13W13W11W6W11W8W6

Tide / Current Tables for Coyote Point Marina, San Francisco Bay, California
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Coyote Point Marina
Click for Map
Fri -- 12:00 AM PDT     Moonset
Fri -- 03:28 AM PDT     7.41 feet High Tide
Fri -- 06:27 AM PDT     Sunrise
Fri -- 10:16 AM PDT     Moonrise
Fri -- 10:38 AM PDT     -0.60 feet Low Tide
Fri -- 05:38 PM PDT     5.81 feet High Tide
Fri -- 07:49 PM PDT     Sunset
Fri -- 10:46 PM PDT     2.74 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.15.46.77.37.36.55.13.31.60.3-0.5-0.601.12.53.955.75.85.34.43.52.92.8

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Fri -- 01:37 AM PDT     1.20 knots Max Flood
Fri -- 04:35 AM PDT     -0.00 knots Slack
Fri -- 06:27 AM PDT     Sunrise
Fri -- 08:30 AM PDT     -1.85 knots Max Ebb
Fri -- 10:16 AM PDT     Moonrise
Fri -- 11:52 AM PDT     0.01 knots Slack
Fri -- 02:47 PM PDT     1.68 knots Max Flood
Fri -- 06:43 PM PDT     -0.01 knots Slack
Fri -- 07:49 PM PDT     Sunset
Fri -- 09:13 PM PDT     -0.84 knots Max Ebb
Fri -- 11:51 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.71.11.20.90.4-0.2-0.8-1.4-1.8-1.8-1.3-0.60.10.91.51.71.51.10.5-0.2-0.6-0.8-0.7-0.3

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 (23,6,7,8)
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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.