|
Marine Weather and Tides
Version 3.4 |
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 5:59AM | Sunset 8:32PM | Wednesday July 17, 2019 1:19 AM PDT (08:19 UTC) | Moonrise 8:24PM | Moonset 5:39AM | Illumination 100% |  |
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 854 Pm Pdt Tue Jul 16 2019
.small craft advisory in effect until 3 am pdt Wednesday...
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 8 to 9 ft. SWell sw around 3 ft at 17 seconds.
Wed..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 7 to 8 ft. SWell sw around 3 ft at 17 seconds.
Wed night..W winds 15 to 25 kt with gusts up to 30 kt. Wind waves 6 to 7 ft. SWell sw around 3 ft at 17 seconds.
Thu..SW winds 10 to 15 kt. Wind waves 5 to 6 ft. SWell sw around 3 ft at 16 seconds.
Thu night..SW winds 10 to 15 kt. Wind waves 4 to 5 ft.
Fri..S winds 10 to 15 kt. Wind waves 6 to 7 ft.
Fri night..SW winds around 5 kt. Wind waves 6 to 7 ft. Patchy fog.
Sat..SW winds 5 to 10 kt. Wind waves 5 to 6 ft. Patchy fog.
Sun..W winds 5 to 10 kt. Wind waves 5 to 6 ft. Patchy fog.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...southwest swell 3 to 4 ft with a dominant period of 17 seconds. Across the bar...southwest swell 4 to 5 ft with a dominant period of 17 seconds. Maximum ebb current of 3.1 kt at 05:25 am Wednesday and 1.7 kt at 06:13 pm Wednesday.
.small craft advisory in effect until 3 am pdt Wednesday...
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 8 to 9 ft. SWell sw around 3 ft at 17 seconds.
Wed..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 7 to 8 ft. SWell sw around 3 ft at 17 seconds.
Wed night..W winds 15 to 25 kt with gusts up to 30 kt. Wind waves 6 to 7 ft. SWell sw around 3 ft at 17 seconds.
Thu..SW winds 10 to 15 kt. Wind waves 5 to 6 ft. SWell sw around 3 ft at 16 seconds.
Thu night..SW winds 10 to 15 kt. Wind waves 4 to 5 ft.
Fri..S winds 10 to 15 kt. Wind waves 6 to 7 ft.
Fri night..SW winds around 5 kt. Wind waves 6 to 7 ft. Patchy fog.
Sat..SW winds 5 to 10 kt. Wind waves 5 to 6 ft. Patchy fog.
Sun..W winds 5 to 10 kt. Wind waves 5 to 6 ft. Patchy fog.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...southwest swell 3 to 4 ft with a dominant period of 17 seconds. Across the bar...southwest swell 4 to 5 ft with a dominant period of 17 seconds. Maximum ebb current of 3.1 kt at 05:25 am Wednesday and 1.7 kt at 06:13 pm Wednesday.
PZZ500 854 Pm Pdt Tue Jul 16 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds continue across the waters. These winds will generate steep fresh swell resulting in hazardous seas conditions particularly for smaller vessels. Light long period southerly swell will continue through at least mid week.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds continue across the waters. These winds will generate steep fresh swell resulting in hazardous seas conditions particularly for smaller vessels. Light long period southerly swell will continue through at least mid week.
7 Day Forecast for Marine Location Near Lagunitas-Forest Knolls CDP, CA
Hourly EDIT Helplocation: 37.98, -122.74 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 kmtr 170545 afdmtr area forecast discussion national weather service san francisco bay area 1045 pm pdt Tue jul 16 2019 Synopsis A gradual cooling trend is forecast through the end of the work week. Slightly warmer weather will likely develop by the end of the upcoming weekend, with more significant warming expected next week. Discussion As of 9:00 pm pdt Tuesday... Similar to yesterday, marine layer clouds cleared from most coastal areas by late in the afternoon. But latest satellite imagery reveals that low clouds are rapidly redeveloping along the coast and locally into the east bay. A cooling trend that got underway in most locations today is expected to continue through the remainder of the work week. However, there may be little, if any, cooling tomorrow as the weak shortwave trough currently located over northern california moves off to our east and we see slight airmass warming over our area. The cooling trend is then expected to redevelop on Thursday and continue into Friday as an upper trough develops over the pacific northwest and sags south into northern california. Inland areas will experience the most cooling (5-10 degrees by Friday). Expect night and morning low clouds to become more widespread by Thursday morning and especially Friday morning. The trough over the pacific northwest is forecast to lift to the northeast by the time the weekend begins, but temperatures will likely remain at least a few degrees cooler than seasonal averages through Saturday, with slight warming then expected by Sunday. In the longer range, the models agree that an upper ridge will build across the western CONUS during the first half of next week, resulting in a warming trend, especially inland. Aviation As of 10:45 pm pdt Tuesday... Coastal stratus and fog is increasing in coverage and extending over to the east bay. Despite a relatively shallow marine layer depth stratus advected by onshore winds have reached ksfo to koak and khwd. Outside of locations in the east bay, the coastal north bay to san francisco where winds remain gusty observations and the WRF model show a general decrease in surface to lower level winds thus greatly reducing the chances of any lingering low level wind shear (llws) for the overnight. None of the 06z tafs advertise llws. A mid latitude 500 mb trof passage late tonight and Wednesday |
morning with a corresponding cyclonic circulation at the 925 mb and 850 mb levels causes cooling and deepening of the marine layer to focus mostly from the south bay to the north central coast. Elsewhere 925 mb temperatures warm by a few degrees, which should keep the marine layer depth either unchanged or compress it a little. Best chance for marine based clouds and fog will be along the coast over to the east bay and south bay southward along the north central coast tonight and Wednesday morning,VFR to the north and inland. Sufficient mixing is forecast Wednesday to lift ceilings and visibilities on the coast whileVFR continues inland. A weak southerly wind reversal may develop along the north central coast Wednesday. The 06z tafs wind forecasts mostly depart from statistical guidance later in the forecast period based on reasoning described above. Vicinity of ksfo... West wind still gusting to near 25 knots.VFR turned to MVFR ceiling due to advection of stratus by a west wind earlier this evening. 06z TAF adjusted for recent change, but not certain the stratus ceiling will hold all night as the marine layer depth probably remains unchanged and the acv-sfo pressure gradient is nearing 6 mb, a stronger northerly coastal wind could end up drawing the stratus back to the ocean overnight. Thus ksfo marginal MVFR ceiling with tendency towardVFR return Wednesday morning probably early, but timing this is low confidence. Sfo bridge approach... Similar to ksfo. Monterey bay terminals... Stratus redeveloped a little quicker than earlier forecast. Patchy drizzle could develop tonight.VFR returns Wednesday morning with winds becoming southerly during the late morning and afternoon. Marine As of 8:54 pm pdt Tuesday... Gusty northwest winds continue across the waters. These winds will generate steep fresh swell resulting in hazardous seas conditions particularly for smaller vessels. Light long period southerly swell will continue through at least mid week. Mtr watches warnings advisories Tngt Sca... Mry bay until 3 am sca... Pt reyes to pigeon pt 0-10 nm until 3 am sca... Pigeon pt to pt pinos 0-10 nm until 3 am sca... Pt pinos to pt piedras blancas 0-10 nm until 3 am sca... Pt arena to pt reyes 0-10 nm sca... Pt arena to pigeon pt 10-60 nm sca... Pigeon pt to pt piedras blancas 10-60 nm public forecast: dykema aviation marine: canepa visit us at |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapWind History for Point Reyes, CA
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
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 | 15 mi | 45 min | N 0 | 10.00 mi | Fair | 57°F | 53°F | 88% | 1011.5 hPa |
| Petaluma Municipal Airport, CA | 20 mi | 25 min | N 0 | 10.00 mi | Fair | 55°F | 55°F | 100% | 1011.5 hPa |
Wind History from DVO (wind in knots)
| 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 | 12 AM | 1 AM | |
| Last 24hr | NE | NE | Calm | NW | Calm | Calm | N | Calm | Calm | SE | SW G19 | SW G24 | W G29 | W G29 | W G29 | W G32 | S | SW G14 | SE | E | Calm | Calm | ||
| 1 day ago | Calm | Calm | NE | E | Calm | NW | Calm | Calm | Calm | N G11 | W | SW G22 | S G19 | SW G17 | S | G12 | S G15 | S | S G13 | Calm | Calm | Calm | ||
| 2 days ago | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | E | G13 | SE | E G11 | SW | S | S | S | S | SE | NE | SE | Calm | Calm |
Tide / Current Tables for Bolinas Lagoon, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataBolinas Lagoon
Click for Map
Wed -- 06:01 AM PDT Sunrise
Wed -- 06:39 AM PDT Moonset
Wed -- 07:20 AM PDT -0.43 feet Low Tide
Wed -- 01:52 PM PDT 3.39 feet High Tide
Wed -- 07:11 PM PDT 1.78 feet Low Tide
Wed -- 08:31 PM PDT Sunset
Wed -- 09:23 PM PDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 06:01 AM PDT Sunrise
Wed -- 06:39 AM PDT Moonset
Wed -- 07:20 AM PDT -0.43 feet Low Tide
Wed -- 01:52 PM PDT 3.39 feet High Tide
Wed -- 07:11 PM PDT 1.78 feet Low Tide
Wed -- 08:31 PM PDT Sunset
Wed -- 09:23 PM PDT Moonrise
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 |
| 4.3 | 4 | 3.4 | 2.5 | 1.5 | 0.5 | -0.1 | -0.4 | -0.3 | 0.2 | 0.9 | 1.8 | 2.6 | 3.2 | 3.4 | 3.2 | 2.8 | 2.3 | 2 | 1.8 | 1.9 | 2.4 | 3.1 | 3.8 |
Tide / Current Tables for Point Reyes, California Current
EDIT (on/off) Help One Week of DataPoint Reyes
Click for Map
Wed -- 12:34 AM PDT -0.00 knots Slack
Wed -- 03:52 AM PDT -1.47 knots Max Ebb
Wed -- 06:02 AM PDT Sunrise
Wed -- 06:40 AM PDT Moonset
Wed -- 07:51 AM PDT 0.00 knots Slack
Wed -- 10:59 AM PDT 1.16 knots Max Flood
Wed -- 02:13 PM PDT -0.00 knots Slack
Wed -- 04:27 PM PDT -0.67 knots Max Ebb
Wed -- 07:42 PM PDT 0.00 knots Slack
Wed -- 08:33 PM PDT Sunset
Wed -- 09:25 PM PDT Moonrise
Wed -- 10:27 PM PDT 0.79 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:34 AM PDT -0.00 knots Slack
Wed -- 03:52 AM PDT -1.47 knots Max Ebb
Wed -- 06:02 AM PDT Sunrise
Wed -- 06:40 AM PDT Moonset
Wed -- 07:51 AM PDT 0.00 knots Slack
Wed -- 10:59 AM PDT 1.16 knots Max Flood
Wed -- 02:13 PM PDT -0.00 knots Slack
Wed -- 04:27 PM PDT -0.67 knots Max Ebb
Wed -- 07:42 PM PDT 0.00 knots Slack
Wed -- 08:33 PM PDT Sunset
Wed -- 09:25 PM PDT Moonrise
Wed -- 10:27 PM PDT 0.79 knots Max Flood
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 |
| 0.3 | -0.3 | -0.9 | -1.3 | -1.5 | -1.3 | -1 | -0.5 | 0.1 | 0.7 | 1 | 1.2 | 1 | 0.7 | 0.1 | -0.4 | -0.6 | -0.6 | -0.5 | -0.3 | 0.1 | 0.5 | 0.8 | 0.8 |
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 (4,6,7,8)
(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. |