Marine Weather and Tides
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 6:51AM||Sunset 4:58PM||Friday November 17, 2017 4:38 PM PST (00:38 UTC)||Moonrise 5:57AM||Moonset 4:58PM||Illumination 1%|
EDIT (on/off)  Help
|PZZ545 Point Reyes To Pigeon Point To 10 Nm- 218 Pm Pst Fri Nov 17 2017 |
Tonight..NE winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 5 ft at 10 seconds.
Sat..N winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 12 seconds.
Sat night..NW winds 5 to 15 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. NW swell 3 ft at 10 seconds.
Sun..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 ft at 13 seconds.
Sun night..SW winds 10 kt. Wind waves 2 ft or less. NW swell 3 ft at 14 seconds. Slight chance of rain after midnight.
Mon..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 3 ft... Increasing to 4 to 6 ft. Chance of rain.
Tue..SE winds 10 kt. Wind waves 2 ft or less. W swell 4 to 6 ft. Chance of rain, then slight chance of rain.
Wed..S winds 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft. Slight chance of rain.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 4 to 6 ft with a dominant swell period of 12. Across the bar...combined seas 5 to 7 ft with a dominant swell period of 12 seconds. Maximum ebb current of 1.8 knots at 03:18 pm Friday and 0.9 knots at 03:42 am Saturday.
|PZZ500 218 Pm Pst Fri Nov 17 2017 |
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light to locally moderate northerly winds for the rest of the day, then decreasing through the weekend. Strongest winds will be along the big sur coast for today. Winds turn southerly and increase Sunday night into early Monday ahead of a weak frontal boundary. Seas light to moderate, easing through the coming days.
7 Day Forecast for Marine Location Near El Granada, CAHourly EDIT Help
Area Discussion for - San Francisco/Monterey Bay Area, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 kmtr 172341|
area forecast discussion
national weather service san francisco bay area
341 pm pst Fri nov 17 2017
Synopsis Dry and seasonably cool weather can be expected
through the weekend. The next system will bring renewed chances
of rain starting late Sunday night. Additional rainfall is
possible the rest of the week, especially for the north bay.
Discussion As of 1:30 pm pst Friday... Showers have come to an
end with satellite showing the only area with clouds confined to
far southeastern monterey county plus san benito county.
Additional rainfall this morning was very light in fact most ares
did not pick up anything additional. With more sunshine
temperatures have been running a bit warmer than Thursday. Most
places today will end in the 60s.
Dry weather will continue into the weekend as a ridge of high
pressure builds into our region. Temperatures are expected to be
mostly in the upper 50s to mid 60s during the day with 30s and 40s
overnight. North bay valley spots will drop into the 30s and
possibly even a few 20s. NAM guidance came up a few degree
compared to yesterday, so will not go with a freeze warning at
Rain will return to our region late on Sunday or early Monday as
low moves to the pacnw coast while an associated front approaches
our region. The bulk of the moisture and favorable dynamics will
stay north of our cwa, however the southern edge will go into the
north bay. The front will dissipate as it progresses farther to
the south, so any rainfall down to monterey bay will be very
limited. By Tuesday generally 1 3-1" can be expected over the
north bay with 2 10" to 1 2" around san francisco bay into the
santa cruz mountains. Lesser amounts are likely for the remainder|
of our region. No issues are anticipated around recent burn areas.
Beyond Tuesday, still a moderate about of uncertainty with the
storm track and how far south moisture will progress. Overall now
looks like most of the rain will stay to our north with just some
light precipitation anticipated over the north bay and possibly
into the san francisco bay area. Thanksgiving day look mostly dry
with just a slight chance for showers.
Aviation As of 3:40 pm pst Friday... For 00z tafs. No major
changes from previous aviation discussion.VFR will continue,
along with light winds, through the TAF period. Kept shallow
patchy dense fog for ksts late tonight into sunrise Saturday for
now, but with relatively low confidence.
Vicinity of ksfo...VFR. Light and variable winds after sunset.
Sfo bridge approach... Similar to ksfo.
Monterey bay terminals...VFR. W NW winds until sunset, then turn
e SE late this evening, but will remain below 10 kt.
Marine As of 09:52 am pst Friday... Generally light to locally
moderate northerly winds today, then decreasing through the
weekend. Strongest winds today will be along the big sur coast.
Winds turn southerly and increase Sunday night into early Monday
ahead of a weak frontal boundary. Seas light to moderate, easing
through the coming days.
Mtr watches warnings advisories
Tngt Sca... Pt pinos to pt piedras blancas 0-10 nm until 9 pm
public forecast: bell
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Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|46237 - San Francisco Bar, CA (142)||21 mi||68 min||57°F||5 ft|
|46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA||23 mi||48 min||NNW 12 G 14||57°F||59°F||7 ft||1021 hPa (-0.8)|
|46026 - SAN FRANCISCO - 18NM West of San Francisco, CA||26 mi||48 min||NNW 12 G 16||56°F||57°F||5 ft||1021.6 hPa (-0.6)|
|TIBC1 - Tiburon Pier, San Francisco Bay, CA||27 mi||66 min||NW 2.9||57°F||1022 hPa|
Wind History for Redwood City, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Half Moon Bay Airport, CA||1 mi||48 min||NW 7||10.00 mi||Fair||59°F||48°F||68%||1020.3 hPa|
|San Francisco, San Francisco International Airport, CA||10 mi||42 min||N 14||10.00 mi||A Few Clouds||60°F||45°F||58%||1021 hPa|
|San Carlos Airport, CA||12 mi||51 min||NNW 9||10.00 mi||Clear||61°F||42°F||52%||1021 hPa|
|Palo Alto Airport, CA||19 mi||51 min||NNW 10||10.00 mi||Clear||63°F||48°F||60%||1020.7 hPa|
|Oakland, Metro Oakland International Airport, CA||20 mi||45 min||NNE 13||10.00 mi||Fair||60°F||42°F||52%||1021.2 hPa|
|Hayward, Hayward Air Terminal, CA||22 mi||44 min||NE 10||10.00 mi||Fair||62°F||37°F||41%||1022.1 hPa|
|Mountain View, Moffett Field, CA||23 mi||42 min||NW 6||10.00 mi||Fair||60°F||45°F||58%||1021.2 hPa|
Wind History from SFO (wind in knots)
|1 day ago||SE|
|2 days ago||W||W||W||W||W||W||W||W||NW||W||NE||SE||Calm||SE||Calm||NE||N||N||N||E||E||E||NE|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Fri -- 03:09 AM PST 1.89 feet Low Tide
Fri -- 05:56 AM PST Moonrise
Fri -- 06:52 AM PST Sunrise
Fri -- 09:15 AM PST 5.78 feet High Tide
Fri -- 04:00 PM PST -0.26 feet Low Tide
Fri -- 04:57 PM PST Sunset
Fri -- 04:58 PM PST Moonset
Fri -- 10:38 PM PST 4.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|San Mateo Bridge |
Click for Map
Fri -- 12:33 AM PST -0.01 knots Slack
Fri -- 03:24 AM PST -1.08 knots Max Ebb
Fri -- 05:55 AM PST Moonrise
Fri -- 06:19 AM PST 0.00 knots Slack
Fri -- 06:51 AM PST Sunrise
Fri -- 09:00 AM PST 1.48 knots Max Flood
Fri -- 12:08 PM PST -0.00 knots Slack
Fri -- 03:35 PM PST -1.77 knots Max Ebb
Fri -- 04:56 PM PST Sunset
Fri -- 04:57 PM PST Moonset
Fri -- 07:02 PM PST 0.01 knots Slack
Fri -- 09:55 PM PST 1.80 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of CentralWestCoast EDIT
Wind Forecast for San Francisco/Monterey Bay Area, CA (19,4,5,8)(on/off)  Help
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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.