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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 6:32AM | Sunset 7:54PM | Saturday August 24, 2019 2:32 PM PDT (21:32 UTC) | Moonrise 12:00AM | Moonset 2:14PM | Illumination 31% |  |
PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 826 Am Pdt Sat Aug 24 2019
Today..S winds 5 to 10 kt. NW swell 4 to 6 ft at 9 seconds and sw around 2 ft at 15 seconds.
Tonight..W winds around 5 kt. Wind waves 3 to 4 ft. W swell 2 to 3 ft at 12 seconds and sw around 2 ft at 15 seconds. Patchy fog.
Sun..SW winds around 5 kt. Wind waves 2 to 3 ft. NW swell 3 to 5 ft at 12 seconds and S around 2 ft at 15 seconds.
Sun night..W winds 5 to 10 kt. NW swell 4 to 6 ft at 12 seconds and S around 2 ft at 13 seconds.
Mon..S winds around 5 kt. NW swell 5 to 7 ft at 11 seconds and S around 2 ft at 12 seconds. Patchy fog.
Mon night..W winds around 5 kt. NW swell 5 to 7 ft at 11 seconds and S around 2 ft at 11 seconds. Patchy fog.
Tue..SW winds 5 to 10 kt. NW swell 3 to 5 ft and S around 2 ft. Patchy fog.
Wed..SW winds 5 to 10 kt. NW swell 2 to 3 ft. Patchy fog.
Today..S winds 5 to 10 kt. NW swell 4 to 6 ft at 9 seconds and sw around 2 ft at 15 seconds.
Tonight..W winds around 5 kt. Wind waves 3 to 4 ft. W swell 2 to 3 ft at 12 seconds and sw around 2 ft at 15 seconds. Patchy fog.
Sun..SW winds around 5 kt. Wind waves 2 to 3 ft. NW swell 3 to 5 ft at 12 seconds and S around 2 ft at 15 seconds.
Sun night..W winds 5 to 10 kt. NW swell 4 to 6 ft at 12 seconds and S around 2 ft at 13 seconds.
Mon..S winds around 5 kt. NW swell 5 to 7 ft at 11 seconds and S around 2 ft at 12 seconds. Patchy fog.
Mon night..W winds around 5 kt. NW swell 5 to 7 ft at 11 seconds and S around 2 ft at 11 seconds. Patchy fog.
Tue..SW winds 5 to 10 kt. NW swell 3 to 5 ft and S around 2 ft. Patchy fog.
Wed..SW winds 5 to 10 kt. NW swell 2 to 3 ft. Patchy fog.
PZZ500 826 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 swell will continue to decrease through the weekend with periods becoming 7 to 8 seconds. Moderate period southerly swell will increase to 2 to 3 feet on Sunday and persist through early next week with light to 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 swell will continue to decrease through the weekend with periods becoming 7 to 8 seconds. Moderate period southerly swell will increase to 2 to 3 feet on Sunday and persist through early next week with light to moderate period northwesterly swell continuing through the period.
7 Day Forecast for Marine Location Near Timber Cove, CA
Hourly EDIT Helplocation: 38.52, -123.25 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 kmtr 241753 afdmtr area forecast discussion national weather service san francisco bay area 1053 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 9:12 am pdt Saturday... Visible satellite imagery shows a more widespread stratus coverage this morning compared to 24 hours ago. This is a result of the deepened marine layer... The ft ord profiler indicates it has increased from less than 1,000 ft yesterday to around 2,000 ft today. Already witnessing the stratus mixing-out in the north bay valleys around santa rosa as well as in the salinas valley. The marine influence and onshore flow will likely hold temperatures back in the interior from their fullest potential given the current synoptic setup, but nonetheless still expecting a warm-to-hot day with 80s and some 90s away from the ocean. Current forecast seems to be on track, but will keep a close eye on temperature trends into the afternoon. For additional details beyond the short-term, please refer to the previous discussion section. Prev 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 10:53 am pdt Saturday... For 18z tafs. The marine layer remains around 1500-2500 feet near the coast. Conditions are improving across the area withVFR expected at all terminals within the next hour. Winds this afternoon will turn onshore and increasing to 10-15 kt during the afternoon. Stratus will likely reform overnight impacting most terminals by Sunday morning. Vicinity of ksfo...VFR through today and most of the overnight with winds increasing to near 15 kt during the afternoon. Stratus to reform by sunrise tomorrow. Sfo bridge approach... MVFR CIGS until 1730z, otherwise similar to ksfo. Monterey bay terminals...VFR. Ifr CIGS returning by 03-04z. Northwest winds to 10 kt during the afternoon. Marine As of 8:26 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 swell will continue to decrease through the weekend with periods becoming 7 to 8 seconds. Moderate period southerly swell will increase to 2 to 3 feet on Sunday and persist through early next week with light to moderate period northwesterly swell continuing through the period. Mtr watches warnings advisories Tday Sca... Sf bay from 12 pm public forecast: rowe aviation: sims marine: sims visit us at |
Weather Reporting Stations
EDIT (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 |
| 46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA | 20 mi | 42 min | NW 1.9 G 1.9 | 55°F | 5 ft | 1015.1 hPa | ||
| ANVC1 - 9416841 - Arena Cove, CA | 37 mi | 44 min | SSW 8 G 9.9 | 56°F | 53°F | 1015.2 hPa | ||
| PRYC1 - 9415020 - Point Reyes, CA | 39 mi | 44 min | 59°F | 1015 hPa | ||||
| 46214 - Point Reyes, CA (029) | 41 mi | 32 min | 58°F | 6 ft |
Wind History for Arena Cove, CA
(wind in knots) EDIT (on/off) Help| 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 | SW | NW | SW G7 | SW | -- | W | -- | SW | SE | SW | -- | W | W | S | SE | S | SW | S | E | S G6 | SW G9 | S G11 | S G9 | SW G11 |
| 1 day ago | NW G15 | NW G15 | NW G13 | NW G16 | NW G12 | NW G9 | NW | NW G5 | W | W G6 | NW G6 | S G8 | W | S G4 | E G5 | NE G6 | NE G5 | N G5 | NW | NW G10 | W | W | SW G12 | SW |
| 2 days ago | NW G12 | NW G9 | W G10 | W G6 | W G4 | SW G4 | SE | NW | NW G6 | W G5 | W G6 | W G7 | S | W G5 | SE G6 | W G5 | NW G8 | SW G8 | N G8 | NW G13 | W G10 | NW G11 | NW G10 | NW G17 |
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 |
| Santa Rosa, Santa Rosa Sonoma County Airport, CA | 23 mi | 39 min | S 9 | 10.00 mi | Fair | 83°F | 54°F | 37% | 1013.2 hPa |
Link to 5 minute data for KSTS
Wind History from STS (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 | SW | SW G20 | S | SW | S | S | S | S | SE | S | S | Calm | S | W | W | SW | Calm | S | S | Calm | S | S | S | |
| 1 day ago | S | S | S | S | S | SE | S | SE | S | S | Calm | Calm | Calm | Calm | Calm | Calm | NW | Calm | Calm | Calm | S | SW | ||
| 2 days ago | NW G17 | W | NW G22 | NW G17 | N G21 | NW | N | NW G21 | NW | NW | NW | S | S | S | S | S | Calm | Calm | Calm | SW |
Tide / Current Tables for Fort Ross, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataFort Ross
Click for Map
Sat -- 12:19 AM PDT 1.03 feet Low Tide
Sat -- 12:33 AM PDT Moonrise
Sat -- 06:35 AM PDT Sunrise
Sat -- 07:08 AM PDT 3.71 feet High Tide
Sat -- 11:48 AM PDT 2.82 feet Low Tide
Sat -- 03:14 PM PDT Moonset
Sat -- 05:53 PM PDT 5.50 feet High Tide
Sat -- 07:54 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:19 AM PDT 1.03 feet Low Tide
Sat -- 12:33 AM PDT Moonrise
Sat -- 06:35 AM PDT Sunrise
Sat -- 07:08 AM PDT 3.71 feet High Tide
Sat -- 11:48 AM PDT 2.82 feet Low Tide
Sat -- 03:14 PM PDT Moonset
Sat -- 05:53 PM PDT 5.50 feet High Tide
Sat -- 07:54 PM PDT Sunset
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 |
| 1 | 1.1 | 1.5 | 2 | 2.6 | 3.1 | 3.5 | 3.7 | 3.6 | 3.4 | 3.1 | 2.9 | 2.8 | 3 | 3.5 | 4.2 | 4.8 | 5.3 | 5.5 | 5.3 | 4.6 | 3.7 | 2.6 | 1.6 |
Tide / Current Tables for Salt Point, California Current
EDIT (on/off) Help One Week of DataSalt Point
Click for Map
Sat -- 12:34 AM PDT Moonrise
Sat -- 01:46 AM PDT 0.00 knots Slack
Sat -- 04:35 AM PDT 0.63 knots Max Flood
Sat -- 06:35 AM PDT Sunrise
Sat -- 08:02 AM PDT -0.00 knots Slack
Sat -- 10:08 AM PDT -0.49 knots Max Ebb
Sat -- 01:10 PM PDT 0.00 knots Slack
Sat -- 03:14 PM PDT Moonset
Sat -- 04:21 PM PDT 0.55 knots Max Flood
Sat -- 07:11 PM PDT -0.00 knots Slack
Sat -- 07:55 PM PDT Sunset
Sat -- 10:37 PM PDT -1.09 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:34 AM PDT Moonrise
Sat -- 01:46 AM PDT 0.00 knots Slack
Sat -- 04:35 AM PDT 0.63 knots Max Flood
Sat -- 06:35 AM PDT Sunrise
Sat -- 08:02 AM PDT -0.00 knots Slack
Sat -- 10:08 AM PDT -0.49 knots Max Ebb
Sat -- 01:10 PM PDT 0.00 knots Slack
Sat -- 03:14 PM PDT Moonset
Sat -- 04:21 PM PDT 0.55 knots Max Flood
Sat -- 07:11 PM PDT -0.00 knots Slack
Sat -- 07:55 PM PDT Sunset
Sat -- 10:37 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 |
| -0.5 | -0.2 | 0.1 | 0.4 | 0.6 | 0.6 | 0.5 | 0.3 | 0 | -0.3 | -0.5 | -0.4 | -0.2 | -0 | 0.2 | 0.4 | 0.5 | 0.5 | 0.3 | 0.1 | -0.3 | -0.7 | -1 | -1.1 |
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 (17,4,5,8)
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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. |