|
Marine Weather and Tides
Version 3.4 |
10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 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 7:11AM | Sunset 4:52PM | Monday December 9, 2019 9:03 PM PST (05:03 UTC) | Moonrise 3:30PM | Moonset 4:31AM | Illumination 97% |  |
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 836 Pm Pst Mon Dec 9 2019
Tonight..NW winds up to 10 kt. Wind waves 1 ft. W swell 3 to 5 ft at 14 seconds.
Tue..S winds around 5 kt. Wind waves 1 ft. W swell 3 to 5 ft at 14 seconds. A chance of rain.
Tue night..SE winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 15 seconds. A chance of rain.
Wed..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 15 seconds. A slight chance of rain.
Wed night..W winds around 5 kt. Wind waves 1 ft. W swell 5 to 7 ft at 16 seconds.
Thu..S winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 20 seconds.
Thu night..W winds around 5 kt. Wind waves 1 ft. W swell 11 to 13 ft at 18 seconds.
Fri..NW winds up to 10 kt. Wind waves 1 ft. W swell 11 to 13 ft.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 8 to 10 ft. A chance of rain.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 4 to 6 ft with a dominant period of 11 seconds. Across the bar...seas 6 to 8 ft with a dominant period of 11 seconds. Maximum ebb current of 1.2 kt at 02:43 am Tuesday and 3.6 kt at 02:37 pm Tuesday.
Tonight..NW winds up to 10 kt. Wind waves 1 ft. W swell 3 to 5 ft at 14 seconds.
Tue..S winds around 5 kt. Wind waves 1 ft. W swell 3 to 5 ft at 14 seconds. A chance of rain.
Tue night..SE winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 15 seconds. A chance of rain.
Wed..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 15 seconds. A slight chance of rain.
Wed night..W winds around 5 kt. Wind waves 1 ft. W swell 5 to 7 ft at 16 seconds.
Thu..S winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 20 seconds.
Thu night..W winds around 5 kt. Wind waves 1 ft. W swell 11 to 13 ft at 18 seconds.
Fri..NW winds up to 10 kt. Wind waves 1 ft. W swell 11 to 13 ft.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 8 to 10 ft. A chance of rain.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 4 to 6 ft with a dominant period of 11 seconds. Across the bar...seas 6 to 8 ft with a dominant period of 11 seconds. Maximum ebb current of 1.2 kt at 02:43 am Tuesday and 3.6 kt at 02:37 pm Tuesday.
PZZ500 836 Pm Pst Mon Dec 9 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will continue to be light over the coastal waters tonight and into Tuesday morning. Patchy fog is possible Tuesday morning. A weak system approaches from the northwest moving toward san francisco Tuesday night, bringing a chance of showers in the evening and into Wednesday while winds turn southerly. The moderate northwest swell will continue through the end of the week before a larger and longer period northwest swell arrives closer to the weekend.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will continue to be light over the coastal waters tonight and into Tuesday morning. Patchy fog is possible Tuesday morning. A weak system approaches from the northwest moving toward san francisco Tuesday night, bringing a chance of showers in the evening and into Wednesday while winds turn southerly. The moderate northwest swell will continue through the end of the week before a larger and longer period northwest swell arrives closer to the weekend.
7 Day Forecast for Marine Location Near Pacifica, CA
Hourly EDIT Helplocation: 37.62, -122.51 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 100236 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 636 PM PST Mon Dec 9 2019
SYNOPSIS. Dry conditions with mild temperatures are forecast through Tuesday afternoon. Patchy dense fog is likely during the night and morning hours. A weak weather system may produce light rain from late Tuesday into early Wednesday. Dry conditions are then forecast for most of the second half of the work week before rain chances increase by Friday night or Saturday.
DISCUSSION. as of 12:55 PM PST Monday . Fog blanketed a good portion of the San Francisco Bay Area and parts of the central California coast this morning. Many airports throughout the region reported visibilities down to 1/4 mile or less. By mid-morning, the severity of the fog had gradually improved, allowing for the Dense Fog Advisory to expire as scheduled at 10 AM PST. With that said, though, as of mid-day overcast skies and locally-reduced visibilities are still being observed. Some locations may never clear this afternoon. With the high-amplitude upper level ridge over our area, will likely see a repeat overnight tonight and into Tuesday morning with fog impacting the area valleys and locations near sea level. Will monitor visibility trends closely and let the evening or night shift make the determination about any new Dense Fog Advisories.
The upper level ridge will quickly push eastward into the North American continent during the day on Tuesday. A fast-moving shortwave trough will then approach the California coast late Tuesday and into Wednesday. The precipitation associated with this shortwave will be light. Best potential for more than a few tenths of an inch of rain will be in the North Bay. The latest 3-km NAM brings around a tenth to a quarter of an inch to San Francisco and the East Bay with lesser amounts in the Santa Clara Valley. The timing of this rain looks to fall in the middle to late evening hours on Tuesday, wrapping up early to middle morning Wednesday. Some locations in Monterey and San Benito County will likely remain dry. Overall, low impacts are anticipated.
A broad, flat upper level ridge in the eastern Pacific between 20 and 30 degrees north latitude will largely push the core storm track to our north from the middle of the week onward. Models advertise a strong system to impact the Pacific Northwest and British Columbia late Wednesday and into Thursday. The North Bay will be on the far southern end of this system with the potential for light rain on Thursday or Friday. Little rainfall (if any) is expected south of the Golden Gate based on the latest guidance. Again, little or no weather-related impacts anticipated in our area.
And behind the late week system comes another shortwave trough over the weekend. Models have backed off a bit over the past several model runs in terms of rainfall totals, indicating a few or several tenths of an inch of rain. If the forecast plans out, little or no weather-related impacts are expected this this system as well.
Looking ahead to late this weekend and into early next week, both the GFS and ECMWF bring a ridge back to the West Coast. While this week from a synoptic meteorological aspect is rather active, the overall rain impacts from the series of successive systems will likely remain low for the San Francisco Bay Area.
AVIATION. as of 3:58 PM PST Monday . For 00z TAFs. Stratus clouds have already moved into the coastal parts of the North Bay and coastal San Francisco while they currently are still out to sea near Monterey Bay. Expect mid level clouds through the evening with reductions to vis and cigs tonight and into the early part of tomorrow morning. Fog is forecast for many terminals around the Bay Area with impacts to vis providing IFR and even LIFR conditions possible. Winds remain generally light. Clouds should scatter out by midday on Tuesday.
Vicinity of KSFO . VFR to MVFR conditions at 00z with stratus clouds currently looming at mid-levels with light winds. Those light winds will prevail through the night. However, vis and low cigs are of concern in the early morning hours. Fog is not in the KSFO TAF currently given the lack of fog at the terminal yesterday morning, despite many other Bay Area terminals experiencing it. By about 20z, clouds should scatter out and allow for VFR conditions once again with light winds. Chances of rain are in the forecast for Tuesday night.
SFO Bridge Approach . Similar to KSFO.
Monterey Bay Terminals . Mostly VFR conditions around 00z for the MRY Bay terminals. But low clouds are expected to return this evening. Winds will swing around to the southeast and remain light. Cigs and vis reduce through the night with fog expected to impact terminals in the early morning hours. Most clouds should scatter out by 20z and winds remain out of the south-southeast.
MARINE. as of 03:45 PM PST Monday . Light winds are forecast to prevail over the coastal waters tonight and into Tuesday. Areas of fog will likely develop overnight and into Tuesday. A weak system will then move through the region early this week bringing a chance of showers Tuesday night into Wednesday while winds turn southerly. Moderate northwest swell will persist through much of the week before a larger and longer period northwest swell arrives late this week.
MTR WATCHES/WARNINGS/ADVISORIES. Tngt. None.
PUBLIC FORECAST: Rowe AVIATION: DK MARINE: CW/AS
Visit us at www.weather.gov/sanfrancisco
Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/nwsbayarea www.twitter.com/nwsbayarea www.youtube.com/nwsbayarea
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapWind History for San Francisco, CA
(wind in knots) EDIT (on/off) Help| 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 | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | -12 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | SW | S | NW | N | SE | S | S | S | E | SW | SE | SE | -- | SW | SW | SW | W | |||||||
| 1 day ago | SW G15 | S G14 | SW G13 | S G8 | S G10 | SW | SW | SW G11 | SW G7 | S | SW | SW | SW G6 | SW | SW G5 | W | SW G8 | W G10 | SW G8 | W | W G10 | SW G9 | SW G9 | SW |
| 2 days ago | S G11 | S G13 | S G13 | S G18 | S G12 | SE G10 | SW G24 | SW G20 | SW G22 | S G24 | S G19 | W G20 | SW G17 | S G13 | S G15 | SW G15 |
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 |
| San Francisco, San Francisco International Airport, CA | 8 mi | 67 min | WNW 6 | 9.00 mi | Mostly Cloudy | 55°F | 46°F | 74% | 1023 hPa |
| Half Moon Bay Airport, CA | 8 mi | 68 min | NNE 3 | 10.00 mi | Overcast | 54°F | 48°F | 82% | 1023.4 hPa |
| San Carlos Airport, CA | 15 mi | 4.3 hrs | N 4 | 10.00 mi | Mostly Cloudy | 55°F | 50°F | 82% | 1022.3 hPa |
| Oakland, Metro Oakland International Airport, CA | 16 mi | 70 min | N 0 | 10.00 mi | Overcast | 55°F | 46°F | 74% | 1023.3 hPa |
| Hayward, Hayward Air Terminal, CA | 21 mi | 69 min | N 0 | 10.00 mi | Overcast | 54°F | 46°F | 77% | 1024.1 hPa |
| Palo Alto Airport, CA | 23 mi | 76 min | NNW 5 | 10.00 mi | Overcast | 54°F | 48°F | 82% | 1023 hPa |
Link to 5 minute data for KHAF
Wind History from HAF (wind in knots)
| 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 | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
| Last 24hr | N | Calm | Calm | Calm | Calm | Calm | Calm | E | E | E | NE | NE | Calm | NW | NW | N | NW | NW | NW | N | N | N | N | N |
| 1 day ago | S G20 | S G16 | SW | SW | S | S | S | S | Calm | Calm | NW | N | Calm | NW | NW | W | NW | W | NW | NW | NW | N | N | N |
| 2 days ago | S G29 | S G28 | S G32 | S G34 | S G23 | S G30 | S G29 | S G24 | S G23 | S G26 | S G26 | S G25 | S G23 | S G25 | S G27 | S G26 | S G27 | S G36 | S G26 | S G20 | S | S | S G19 |
Tide / Current Tables for Point San Bruno, San Francisco Bay, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPoint San Bruno
Click for Map
Tue -- 04:31 AM PST 2.50 feet Low Tide
Tue -- 05:32 AM PST Moonset
Tue -- 07:13 AM PST Sunrise
Tue -- 10:14 AM PST 7.28 feet High Tide
Tue -- 04:04 PM PST Moonrise
Tue -- 04:50 PM PST Sunset
Tue -- 05:34 PM PST -0.28 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 04:31 AM PST 2.50 feet Low Tide
Tue -- 05:32 AM PST Moonset
Tue -- 07:13 AM PST Sunrise
Tue -- 10:14 AM PST 7.28 feet High Tide
Tue -- 04:04 PM PST Moonrise
Tue -- 04:50 PM PST Sunset
Tue -- 05:34 PM PST -0.28 feet Low 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 |
| 5.4 | 4.8 | 3.9 | 3.1 | 2.6 | 2.6 | 3.2 | 4.3 | 5.6 | 6.7 | 7.3 | 7.1 | 6.3 | 5 | 3.3 | 1.7 | 0.5 | -0.2 | -0.2 | 0.5 | 1.6 | 2.9 | 4.2 | 5.2 |
Tide / Current Tables for Sierra Point 1.3 mi ENE, South San Francisco Bay, California Current
EDIT (on/off) Help One Week of DataSierra Point 1.3 mi ENE
Click for Map
Tue -- 01:56 AM PST -0.69 knots Max Ebb
Tue -- 04:41 AM PST 0.00 knots Slack
Tue -- 05:32 AM PST Moonset
Tue -- 07:13 AM PST Sunrise
Tue -- 07:43 AM PST 0.80 knots Max Flood
Tue -- 10:40 AM PST -0.01 knots Slack
Tue -- 02:11 PM PST -1.38 knots Max Ebb
Tue -- 04:04 PM PST Moonrise
Tue -- 04:50 PM PST Sunset
Tue -- 05:39 PM PST 0.01 knots Slack
Tue -- 08:48 PM PST 1.03 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 01:56 AM PST -0.69 knots Max Ebb
Tue -- 04:41 AM PST 0.00 knots Slack
Tue -- 05:32 AM PST Moonset
Tue -- 07:13 AM PST Sunrise
Tue -- 07:43 AM PST 0.80 knots Max Flood
Tue -- 10:40 AM PST -0.01 knots Slack
Tue -- 02:11 PM PST -1.38 knots Max Ebb
Tue -- 04:04 PM PST Moonrise
Tue -- 04:50 PM PST Sunset
Tue -- 05:39 PM PST 0.01 knots Slack
Tue -- 08:48 PM PST 1.03 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 | -0.6 | -0.7 | -0.5 | -0.3 | 0.1 | 0.5 | 0.7 | 0.8 | 0.6 | 0.3 | -0.2 | -0.7 | -1.2 | -1.4 | -1.3 | -0.9 | -0.4 | 0.2 | 0.7 | 1 | 1 | 0.9 | 0.6 |
Weather Map
(on/off) Help Weather Map
GEOS 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 (0,6,7,8)
(on/off) Help
Ground Weather Radar Station San Francisco Bay Area, CA
(on/off) Help
Ad by Google
|
Cookie Policy: This webiste uses cookies to save your settings. No personal information is saved. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser. Privacy Policy: I do not sell or share any user data or anything else for that matter. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway. 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. |