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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:31AM | Sunset 7:52PM | Saturday August 24, 2019 5:37 AM PDT (12:37 UTC) | Moonrise 12:00AM | Moonset 2:09PM | Illumination 35% |  |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 244 Am Pdt Sat Aug 24 2019
.small craft advisory in effect from noon pdt today through this evening...
Today..SW winds 10 to 20 kt. Gusts up to 30 kt this afternoon.
Tonight..SW winds 10 to 15 kt.
Sun..SW winds 10 to 15 kt with gusts up to 25 kt.
Sun night..SW winds 10 to 15 kt.
Mon..SW winds 10 to 15 kt with gusts up to 25 kt.
Mon night..SW winds 10 to 15 kt.
Tue..SW winds 15 to 20 kt with gusts up to 25 kt.
Wed..SW winds 15 to 20 kt with gusts up to 25 kt.
.small craft advisory in effect from noon pdt today through this evening...
Today..SW winds 10 to 20 kt. Gusts up to 30 kt this afternoon.
Tonight..SW winds 10 to 15 kt.
Sun..SW winds 10 to 15 kt with gusts up to 25 kt.
Sun night..SW winds 10 to 15 kt.
Mon..SW winds 10 to 15 kt with gusts up to 25 kt.
Mon night..SW winds 10 to 15 kt.
Tue..SW winds 15 to 20 kt with gusts up to 25 kt.
Wed..SW winds 15 to 20 kt with gusts up to 25 kt.
PZZ500 244 Am Pdt Sat Aug 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light northerly winds will persist over the northern outer waters while light southwesterly winds will develop elsewhere through the weekend. Steep, short period northwesterly swells will continue to decrease through the weekend with period becoming 7 to 8 seconds. Moderate period southerly swells will increase to 2 to 3 feet on Sunday and persist through early next week with light moderate period northwesterly swell continuing through the period.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light northerly winds will persist over the northern outer waters while light southwesterly winds will develop elsewhere through the weekend. Steep, short period northwesterly swells will continue to decrease through the weekend with period becoming 7 to 8 seconds. Moderate period southerly swells will increase to 2 to 3 feet on Sunday and persist through early next week with light moderate period northwesterly swell continuing through the period.
7 Day Forecast for Marine Location Near North Richmond, CA
Hourly EDIT Helplocation: 38, -122.4 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 kmtr 241158 afdmtr area forecast discussion national weather service san francisco bay area 458 am pdt Sat aug 24 2019 Synopsis High pressure will bring a fairly seasonable weather pattern to the bay area this weekend into early next week. The marine layer will persist along the coast along with onshore flow keeping temperatures warm near the coast and bays. Inland temperatures will trend hotter as the strong high pressure builds. Remnants of tropical storm ivo will pass offshore Tuesday and Wednesday with increasing clouds and higher humidity developing. Discussion As of 3:35 am pdt Saturday... Fairly strong high pressure ridge will stretch from the eastern pacific to over california and towards arizona. Heights will rise to around 594 dm over the bay area by this afternoon and then hold fairly steady through about Tuesday. The fort ord profiler shows the marine layer as deep as 2500 feet but on average it looks to be closer to 2000 feet across the region early this morning. In general the strong ridge should start to compress the layer but low level southerly flow continues to advect marine air locally into the bay and valleys. Despite the strong ridge the 850 mb temps are only around 21-22 celsius this weekend. This in combination with onshore flow will keep things from getting too hot. In general the ridge will allow temps to trend a few degrees above normal but expecting mainly 70s 80s around the bay with 90s farther inland. No big changes of note Sunday and Monday but the trend should be for hotter temps inland as mid and upper 90s become more widespread due to the ridge strengthening and the marine layer compressing. Heat risk values become moderate through the period for the interior valleys but the lack of widespread triple digit heat should preclude the need for any headlines. Overall trend for above normal temps but nothing too out of the ordinary for late august. The most interesting weather item to monitor will continue to be the remnants of tropical storm ivo moving northward. The models continue to be fairly consistent in their handling of this feature as it shifts northward and interacts with the strong ridge. While we continue to mention the increase in mid high clouds as well as higher dewpoints as this feature passes offshore Tuesday and Wednesday the main concern for the state will be the possibility of thunderstorms. The general model consensus has been to keep the main moisture and instability well offshore, west of point conception and big sur on Tuesday. However, the 06z GFS brings the moisture and instability closer to shore and clips the north bay with some elevated values of most unstable CAPE as well as modified total totals in excess of 30. In fact the 06z GFS even generates some spotty QPF over the north bay early weds morning. As we've been mentioning in previous discussions the details of the storm track will remain fluid. The conceptual model strongly suggests there will be some |
type of convective activity associated with this feature as the tropical moisture and decaying low interact with the upper ridge and an incoming mid-latitude shortwave. However and this is to be stressed, at this time the best chance for t-storms looks to be north and east of the bay area (think trinity alps, mt shasta, modoc, northern sierra). That being said cant rule out a scenario where our CWA is impacted (and at this time the north bay would be in the 5-10% range late Tuesday night early weds am). Due to the nature of the system, any lightning would tend to be wet. However, fuels are trending to their driest levels this summer and an abundant lightning event could lead to new starts. So that remains a very low probability scenario but worth monitoring as impacts could be significant. The disturbance should quickly move northward by later weds afternoon evening followed by rebuilding high pressure and a return of dry seasonable wx. Aviation As of 04:58 am pdt Saturday... Depth of the marine layer varies around 1500-2500 feet across the area this morning. Southerly gradient has held steady at around 1 mb with light southerly winds in the valleys such as at ksjc and ksns. CIGS are higher than previous mornings with ifr to MVFR along the coast and sf bay as well as the north bay valleys whileVFR continues inland. Stratus should begin to retreat to the coast after sunrise withVFR developing at all TAF sites by late morning. Winds this afternoon turning onshore and increasing to 10-15 kt. Stratus will likely impact similar locations tonight with lower CIGS as high pressure compresses the marine layer. Vicinity of ksfo... Stratus rapidly filling in near the terminal and approach with MVFR CIGS at times through 16-17z. Stratus may be patchy through the morning especially if any light southwesterly winds mix down to the surface.VFR this afternoon with winds increasing to near 15kt. Sfo bridge approach... Similar to ksfo. Monterey bay terminals... Ifr CIGS this morning withVFR developing around 17-18z. Ifr CIGS returning early to mid evening tonight. Marine As of 02:53 am pdt Saturday... Light northerly winds will persist over the northern outer waters while light southwesterly winds will develop elsewhere through the weekend. Steep, short period northwesterly swells will continue to decrease through the weekend with period becoming 7 to 8 seconds. Moderate period southerly swells will increase to 2 to 3 feet on Sunday and persist through early next week with light moderate period northwesterly swell continuing through the period. Mtr watches warnings advisories Tday Sca... Sf bay from 12 pm public forecast: rww aviation: st marine: st 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| 6 AM | 7 AM | 8 AM | 9 AM | 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 | |
| Last 24hr | S G17 | S G13 | S G15 | S G11 | S G13 | SW G14 | SW G13 | SW G16 | SW G17 | SW G18 | SW G19 | SW G13 | SW G7 | S G9 | W G7 | SW | SW G8 | SW G8 | SW G9 | SW G8 | S | SW G11 | SW G9 | SW |
| 1 day ago | S G11 | S | S | S | S G10 | S G8 | S G8 | SE G9 | S | S | SE G11 | SE | S G12 | S G9 | S | S G11 | S | S | S G9 | S G10 | S G10 | S G8 | S G9 | S G14 |
| 2 days ago | S | S | SE | SE G7 | S | S | S G7 | S G9 | SE | E | SE | SW G6 | NW | NW | NW G5 | NW G18 | S G8 | S G9 | S G8 | S G11 | S | S G13 | S G14 | S |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Novato / Gnoss Field, CA | 13 mi | 42 min | N 0 | 10.00 mi | Mostly Cloudy | 57°F | 55°F | 94% | 1012.2 hPa |
| Napa, Napa County Airport, CA | 16 mi | 43 min | W 9 | 10.00 mi | Fair | 58°F | 55°F | 93% | 1011 hPa |
| Concord, Buchanan Field, CA | 19 mi | 44 min | W 7 | 10.00 mi | Fair | 62°F | 55°F | 80% | 1010 hPa |
| Petaluma Municipal Airport, CA | 21 mi | 42 min | NW 3 | 6.00 mi | Fog/Mist | 59°F | 59°F | 100% | 1012.5 hPa |
| Oakland, Metro Oakland International Airport, CA | 23 mi | 44 min | N 5 | 10.00 mi | Mostly Cloudy | 63°F | 57°F | 84% | 1012.1 hPa |
Link to 5 minute data for KDVO
Wind History from DVO (wind in knots)
| 6 AM | 7 AM | 8 AM | 9 AM | 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 | |
| Last 24hr | Calm | S | Calm | Calm | Calm | N | E | E | SE | SE | G15 | N | N | N | N | N | N | N | Calm | Calm | SW | |||
| 1 day ago | Calm | Calm | Calm | Calm | Calm | NE | SE | G10 | SW | SW | SW | SW | E | N | N | NW | Calm | Calm | Calm | Calm | ||||
| 2 days ago | Calm | Calm | Calm | Calm | Calm | N | SW | W G14 | SW | W G18 | SW | E G11 | S | NE | SE | Calm |
Tide / Current Tables for Pinole Point, San Pablo Bay, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPinole Point
Click for Map
Sat -- 12:31 AM PDT Moonrise
Sat -- 02:15 AM PDT 0.99 feet Low Tide
Sat -- 06:32 AM PDT Sunrise
Sat -- 09:11 AM PDT 4.01 feet High Tide
Sat -- 01:44 PM PDT 2.71 feet Low Tide
Sat -- 03:09 PM PDT Moonset
Sat -- 07:50 PM PDT Sunset
Sat -- 07:56 PM PDT 5.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:31 AM PDT Moonrise
Sat -- 02:15 AM PDT 0.99 feet Low Tide
Sat -- 06:32 AM PDT Sunrise
Sat -- 09:11 AM PDT 4.01 feet High Tide
Sat -- 01:44 PM PDT 2.71 feet Low Tide
Sat -- 03:09 PM PDT Moonset
Sat -- 07:50 PM PDT Sunset
Sat -- 07:56 PM PDT 5.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 2 | 1.3 | 1 | 1.1 | 1.5 | 2.1 | 2.8 | 3.4 | 3.8 | 4 | 3.9 | 3.6 | 3.1 | 2.8 | 2.7 | 3 | 3.6 | 4.3 | 5.1 | 5.7 | 6 | 5.7 | 5 | 4 |
Tide / Current Tables for Pinole Point 1.2 mi W, San Pablo Bay, California Current
EDIT (on/off) Help One Week of DataPinole Point 1.2 mi W
Click for Map
Sat -- 12:31 AM PDT Moonrise
Sat -- 03:28 AM PDT 0.00 knots Slack
Sat -- 06:13 AM PDT 0.50 knots Max Flood
Sat -- 06:32 AM PDT Sunrise
Sat -- 09:53 AM PDT -0.00 knots Slack
Sat -- 11:51 AM PDT -0.40 knots Max Ebb
Sat -- 02:16 PM PDT 0.00 knots Slack
Sat -- 03:09 PM PDT Moonset
Sat -- 04:49 PM PDT 0.86 knots Max Flood
Sat -- 07:50 PM PDT Sunset
Sat -- 08:39 PM PDT -0.00 knots Slack
Sat -- 11:53 PM PDT -1.09 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:31 AM PDT Moonrise
Sat -- 03:28 AM PDT 0.00 knots Slack
Sat -- 06:13 AM PDT 0.50 knots Max Flood
Sat -- 06:32 AM PDT Sunrise
Sat -- 09:53 AM PDT -0.00 knots Slack
Sat -- 11:51 AM PDT -0.40 knots Max Ebb
Sat -- 02:16 PM PDT 0.00 knots Slack
Sat -- 03:09 PM PDT Moonset
Sat -- 04:49 PM PDT 0.86 knots Max Flood
Sat -- 07:50 PM PDT Sunset
Sat -- 08:39 PM PDT -0.00 knots Slack
Sat -- 11:53 PM PDT -1.09 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| -0.9 | -0.8 | -0.5 | -0.2 | 0.2 | 0.4 | 0.5 | 0.5 | 0.4 | 0.2 | -0 | -0.3 | -0.4 | -0.3 | -0.1 | 0.3 | 0.7 | 0.9 | 0.7 | 0.5 | 0.2 | -0.2 | -0.7 | -1 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
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 (8,2,3,4)
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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. |