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Marine Weather and Tides
Version 3.4 |
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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. |
| Sunrise 5:45AM | Sunset 8:37PM | Monday June 18, 2018 10:03 AM PDT (17:03 UTC) | Moonrise 10:19AM | Moonset 11:54PM | Illumination 27% |  |
Marine Forecasts
EDIT (on/off) Help| PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 900 Am Pdt Mon Jun 18 2018 Today..SW winds 10 to 20 kt. Tonight..SW winds 10 to 20 kt. Tue..SW winds 10 to 20 kt. Tue night..SW winds 10 to 20 kt. Wed..SW winds 15 to 25 kt. Thu..SW winds 10 to 20 kt. Fri..W winds 5 to 15 kt. | PZZ500 900 Am Pdt Mon Jun 18 2018 Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light southerly winds will continue along the near shore waters through the morning becoming northwesterly across all waters this afternoon. Winds will remain generally light through mid-week before increasing during the later half of the week. Seas will also remain light with a mixed northwest and southerly swell. |
7 Day Forecast for Marine Location Near Novato, CA
Hourly EDIT Helplocation: 38.1, -122.59 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 kmtr 181603 afdmtr area forecast discussion national weather service san francisco bay area 903 am pdt Mon jun 18 2018 Synopsis A warming trend is forecast to begin on Monday and continue through much of the week as high pressure builds over california. Discussion As of 09:00 am pdt Monday... First and foremost, did a quick update to fine tune the cloud cover marine layer forecast this morning. Interesting satellite imagery showing cloudy skies for the N and E bay, san francisco and santa clara valley, but clear skies from moss landing southward. Ft. Ord profiler shows no marine layer, but the morning koak puts this inversion about 2,000 feet. Also, tweaked temperatures upward in a few spots given sunny start around monterey. The rest of the forecast will heavily focus on the upcoming warming trend and any potential heat risk concerns. Prev discussion As of 3:02 am pdt Monday... Satellite fog product is showing coastal low clouds extending through the monterey bay and into the hollister valley, as well as locally into portions of the san francisco bay area. There is much less inland extent to the stratus compared to last night as the marine layer begins to decrease, in response to high pressure which will begin building into the state from the west. High temperatures today are forecast to be much warmer than Sunday's, especially inland areas which are expected to be in the 80s. This upper level ridge is progged to build in over the west, peaking on Wednesday before shifting to the east over the desert southwest. High temperatures across inland areas on Wednesday are forecast to approach the century mark, with mid 60s to mid 70s at the immediate coast. The ridge will weaken somewhat by the end of the workweek as weak |
impulses move across the pacific northwest. High temperatures will moderate somewhat, but remain in the 80s and 90s across inland areas. Aviation As of 04:33 am pdt Sunday... For 12z tafs. Stratus has been filling in clearing out and filling back in overnight. Cigs have cleared out of kmry and ksns, but may build back in over the next couple of hours. Low clouds seem to be firmly in place over the north bay and sf bay regions. MVFR ifr conditions will persist through the late morning for those locations (~18z). Any low cloud redevelopment over the south bay and monterey areas may clear sooner. Generally light winds through the period with onshore winds this afternoon 10-15 kt. Moderate confidence. Vicinity of ksfo... MVFR conditions through around 18z. Once cigs clear,VFR conditions will prevail through late tonight. Generally light winds becoming onshore at around 15 kt this afternoon. Sfo bridge approach... Similar to ksfo. Monterey bay terminals... Low CIGS have cleared away for now, but may build back in over the next few hours. Any stratus redevelopment is not expected to be long lasting.VFR conditions through late tonight before low clouds return. Generally light winds through the period. Marine As of 2:11 am pdt Monday... Light southerly winds will continue through the morning before becoming northwesterly. Winds will remain generally light through mid-week before increasing. Seas will also remain light with a mixed northwest and southerly swell. Mtr watches warnings advisories Tday Sca... Pt pinos to pt piedras blancas 0-10 nm from 5 pm public forecast: sims aviation: as marine: as visit us at |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapWind History for Richmond, CA
(wind in knots) EDIT (on/off) Help| 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | S G10 | SW G7 | S G12 | SW G10 | SW G12 | W G8 | S G10 | W G10 | NW G12 | SW G8 | W G9 | W G9 | SW G8 | W G8 | S G8 | S G7 | S G6 | SW G4 | W G7 | W G8 | W G8 | W | SW G5 | SW |
| 1 day ago | SW G10 | SW G9 | SW G13 | SW G16 | SW G14 | SW G16 | SW G14 | SW G14 | SW G13 | SW G20 | SW G17 | SW G18 | SW G14 | S G17 | S G12 | S G16 | S G15 | S G14 | S G13 | S G13 | S G12 | S G11 | SW G11 | SW G10 |
| 2 days ago | S G17 | S G16 | S G16 | S G17 | S G20 | S G18 | S G14 | SW G14 | SW G16 | SW G17 | SW G12 | S G13 | S G17 | S G17 | S G18 | S G19 | S G17 | SW G13 | S G13 | SW G8 | SW G8 | SW G11 | W | S |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Novato / Gnoss Field, CA | 4 mi | 69 min | N 0 | 10.00 mi | Overcast | 59°F | 51°F | 77% | 1017.9 hPa |
| Petaluma Municipal Airport, CA | 11 mi | 69 min | N 0 | 8.00 mi | Overcast | 57°F | 53°F | 88% | 1018.3 hPa |
| Napa, Napa County Airport, CA | 18 mi | 70 min | W 8 | 10.00 mi | Overcast | 59°F | 52°F | 78% | 1017.1 hPa |
Wind History from DVO (wind in knots)
| 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | |
| Last 24hr | Calm | SE G16 | SW | SW | SW | W | W | NW | N | N | N | N | Calm | NW | Calm | Calm | W | W | SW | Calm | NW | |||
| 1 day ago | N | Calm | W G19 | NW | SW | SW | SW G23 | SW | W G21 | SW G18 | SW G14 | G12 | SW G12 | G10 | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm |
| 2 days ago | Calm | E G15 | G13 | SE | E G13 | SW G18 | SW | SW G20 | SW | SW G20 | SW | SW | Calm | Calm | Calm | Calm | NW | S | Calm | Calm | Calm | Calm | N |
Tide / Current Tables for Hog Island, San Antonio Creek, San Pablo Bay, California
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Hog Island Click for Map Mon -- 12:03 AM PDT 1.99 feet Low Tide Mon -- 12:15 AM PDT Moonset Mon -- 05:04 AM PDT 6.12 feet High Tide Mon -- 05:46 AM PDT Sunrise Mon -- 11:19 AM PDT Moonrise Mon -- 12:35 PM PDT -0.70 feet Low Tide Mon -- 07:10 PM PDT 5.75 feet High Tide Mon -- 08:35 PM PDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 2 | 2.3 | 3.3 | 4.5 | 5.6 | 6.1 | 5.9 | 5.2 | 3.9 | 2.5 | 1.1 | -0 | -0.6 | -0.6 | 0 | 1.2 | 2.6 | 4.1 | 5.2 | 5.7 | 5.6 | 4.9 | 3.9 | 3 |
Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
EDIT (on/off) Help One Week of Data| Petaluma River Approach Click for Map Mon -- 12:14 AM PDT Moonset Mon -- 01:35 AM PDT 0.60 knots Max Flood Mon -- 04:53 AM PDT -0.00 knots Slack Mon -- 05:46 AM PDT Sunrise Mon -- 08:17 AM PDT -0.92 knots Max Ebb Mon -- 11:18 AM PDT Moonrise Mon -- 12:22 PM PDT 0.00 knots Slack Mon -- 03:33 PM PDT 0.67 knots Max Flood Mon -- 07:14 PM PDT -0.00 knots Slack Mon -- 08:35 PM PDT Sunset Mon -- 09:53 PM PDT -0.49 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 0.3 | 0.6 | 0.6 | 0.5 | 0.3 | -0 | -0.4 | -0.8 | -0.9 | -0.9 | -0.8 | -0.5 | -0.1 | 0.3 | 0.5 | 0.7 | 0.7 | 0.6 | 0.3 | 0.1 | -0.2 | -0.4 | -0.5 | -0.4 |
Weather Map and Satellite Images
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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 (13,3,4,5)
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Ground Weather Radar Station Sacramento, 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. |