|
Marine Weather and Tides
Version 3.4 |
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 5:46AM | Sunset 8:38PM | Friday June 23, 2017 1:44 PM PDT (20:44 UTC) | Moonrise 4:36AM | Moonset 7:18PM | Illumination 0% |  |
Marine Forecasts
EDIT (on/off) Help| PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 831 Am Pdt Fri Jun 23 2017 .small craft advisory in effect through this evening... Today..SW winds 15 to 25 kt. Tonight..SW winds 15 to 25 kt. Patchy fog after midnight. Sat..SW winds 15 to 25 kt. Patchy fog in the morning. Sat night..SW winds 15 to 25 kt. Sun..SW winds 15 to 25 kt. Mon..SW winds 10 to 20 kt. Tue..SW winds 5 to 15 kt. | PZZ500 831 Am Pdt Fri Jun 23 2017 Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds over the coastal waters today. Onshore winds will be breezy through the golden gate gap and across the northern san francisco bay. Northwest winds return this weekend. Generally decreasing seas through the coming days. |
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 232034 afdmtr area forecast discussion national weather service san francisco bay area 134 pm pdt Fri jun 23 2017 Synopsis Cooling trend started today for most areas as onshore flow returns. The far interior valleys will remain seasonably warm through this evening. The overall trend this weekend and into next week will be a return to more seasonable temperatures along with more extensive night and morning low clouds followed by sunny afternoons. Discussion As of 01:28 pm pdt Friday... After a prolong period of heat, the much talked about cool down began today. Afternoon 24 hour trends are still impressive with a solid 10 to 20 degree drop from Thursday to Friday. Some of the biggest drops are: santa rosa 17 degrees, livermore 15 degrees and oakland 15 degrees, los altos 19 degrees and spring valley 21 degrees. However, despite the cool down still want to highlight the cumulative effects of the prolonged heat combined with highs exceeding 90 degrees impacting sensitive groups. Far interior locations might be cooler than Thursday, but will likely end up in the mid and upper 90s today. Therefore, a heat advisory remains in effect through this evening for interior east bay, mountains of monterey cty and interior san benito. The cool down noticed today will continue through the weekend. No heat advisories warnings will be needed. In fact, night and morning low clouds will be common place as temperatures return to near normal by next week. One major change to the forecast was to include a slight chance of thunderstorms over monterey san benito late tonight into Saturday. Confidence is rather low, but if it verifies impacts could be huge, especially from a fire weather perspective. For several days now, models have been keying in on the moisture convection near baja tracking north. Latest models do bring the mid-upper level moisture (700-500mb) northward tonight and early Saturday. In addition to the moisture advection, upper level instability increases. Mu CAPE through the layer increases |
with modified total totals greater than 30 all indicating upper level lift. At this point only giving it a 15 pct chance of occurring, but still wanted to add it to the forecast. Medium and longer range models still indicate later next week and towards the end of the month show more pronounced ridging with potential for another round of weak offshore flow and associated warming. CPC has the 6-10 forecast above normal temps for ca. Aviation As of 10:41 am pdt Friday... For 18z tafs. Current visible satellite shows marine layer mixing out nicely over land, resulting inVFR at all TAF sites. Marine layer is expected to remain just offshore through the afternoon, but will likely push back onshore this evening and overnight. Generally light onshore winds today, except breezy onshore winds through coastal gaps and valleys, including near ksfo, by this afternoon and evening. Forecast confidence: moderate vicinity of ksfo... CurrentlyVFR. Ifr CIGS expected to return overnight tonight, sometime around 10z at ksfo, and sooner for koak. Breezy afternoon winds this afternoon, around 15-20 kt. Sfo bridge approach... Lifr-ifr CIGS expected around 08-09z over the approach. Monterey bay terminals...VFR through the afternoon, with early return of stratus this evening, around 02-03z. Early morning lifr CIGS and fog possible before sunrise. Generally light winds this afternoon, occasionally breezy. Marine As of 10:23 am pdt Friday... Generally light southerly winds over the coastal waters today. Onshore winds will be breezy through the golden gate gap and across the northern san francisco bay. Northwest winds return this weekend. Generally decreasing seas through the coming days. Mtr watches warnings advisories Tngt Heat advisory until 9 pm... Caz510-511-517-518 sca... Sf bay until 9 pm public forecast: mm aviation: bam marine: bam 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| 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 | 11 AM | 12 PM | 1 PM | |
| Last 24hr | SW G6 | SW | SE G7 | SW | SW G10 | W G8 | NE G7 | E | S G7 | E | S | SW | SW G9 | W | W | W G7 | W | SW G7 | W G10 | SW G7 | W | S G9 | S G8 | S |
| 1 day ago | SE G6 | SE G5 | SE G5 | SE G8 | SE G10 | SE G9 | S G11 | S G11 | S G12 | SW G10 | SE G4 | SE | S | SE | -- | -- | E | SW | SE | SE | SE G4 | SE | NE | |
| 2 days ago | S G13 | S G13 | S G14 | S G14 | SE G8 | S G11 | S G16 | S G19 | S G20 | S G17 | S G17 | S G20 | S G20 | S G19 | S G13 | S G14 | S G14 | S G14 | S G11 | S G9 | S G10 | S | 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 | 49 min | NNE 13 | 10.00 mi | Fair | 84°F | 60°F | 45% | 1012.2 hPa |
| Petaluma Municipal Airport, CA | 11 mi | 69 min | WNW 9 | 9.00 mi | Fair | 79°F | 60°F | 54% | 1012.9 hPa |
| Napa, Napa County Airport, CA | 18 mi | 50 min | SSW 14 | 10.00 mi | Fair | 78°F | 57°F | 50% | 1011.4 hPa |
Wind History from DVO (wind in knots)
| 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 | 11 AM | 12 PM | 1 PM | 2 PM | |
| Last 24hr | N | N | N | N | N | N | N | N | N | N | Calm | N | NW | N | N | N | N | N | N | N | N | NE | N | |
| 1 day ago | N | N | N | N | NE | Calm | NE | N | N | N | Calm | Calm | Calm | N | N | Calm | Calm | Calm | Calm | SE | SE | |||
| 2 days ago | SE | E | E | SW | S | E | SE | S | SE | Calm | Calm | Calm | S | Calm | Calm | S | Calm | Calm | Calm | Calm | SE |
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 Fri -- 12:32 AM PDT 7.39 feet High Tide Fri -- 05:36 AM PDT Moonrise Fri -- 05:47 AM PDT Sunrise Fri -- 08:08 AM PDT -1.19 feet Low Tide Fri -- 02:29 PM PDT 5.26 feet High Tide Fri -- 07:32 PM PDT New Moon Fri -- 07:52 PM PDT 1.73 feet Low Tide Fri -- 08:17 PM PDT Moonset Fri -- 08:37 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 |
| 7.2 | 7.3 | 6.7 | 5.5 | 3.8 | 1.9 | 0.3 | -0.8 | -1.2 | -0.9 | 0.1 | 1.5 | 3 | 4.4 | 5.2 | 5.2 | 4.6 | 3.7 | 2.7 | 1.9 | 1.7 | 2.3 | 3.6 | 5.2 |
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 Fri -- 12:12 AM PDT -0.01 knots Slack Fri -- 03:41 AM PDT -1.03 knots Max Ebb Fri -- 05:35 AM PDT Moonrise Fri -- 05:47 AM PDT Sunrise Fri -- 08:02 AM PDT 0.01 knots Slack Fri -- 10:51 AM PDT 0.59 knots Max Flood Fri -- 02:18 PM PDT -0.00 knots Slack Fri -- 04:28 PM PDT -0.37 knots Max Ebb Fri -- 06:52 PM PDT 0.00 knots Slack Fri -- 07:32 PM PDT New Moon Fri -- 08:16 PM PDT Moonset Fri -- 08:36 PM PDT Sunset Fri -- 09:32 PM PDT 0.83 knots Max Flood 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 |
| 0.1 | -0.4 | -0.8 | -1 | -1 | -0.9 | -0.7 | -0.4 | -0 | 0.4 | 0.5 | 0.6 | 0.5 | 0.3 | 0.1 | -0.2 | -0.4 | -0.4 | -0.2 | 0 | 0.5 | 0.8 | 0.8 | 0.6 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of CentralWestCoast EDIT  |
Wind Forecast for San Francisco/Monterey Bay Area, CA (16,3,4,5)
(on/off) Help |  |  |
Ground Weather Radar Station Sacramento, CA
(on/off) Help
Ad by Google
|
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. |