|
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 7:09AM | Sunset 4:52PM | Friday December 6, 2019 5:03 PM PST (01:03 UTC) | Moonrise 2:04PM | Moonset 1:37AM | Illumination 76% |  |
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 134 Pm Pst Fri Dec 6 2019
.small craft advisory in effect until 3 pm pst this afternoon...
.gale warning in effect through late tonight...
Rest of today..S winds 25 to 30 kt with gusts up to 45 kt. Wind waves 9 to 10 ft. W swell 5 to 7 ft at 17 seconds. Showers.
Tonight..S winds 25 to 30 kt with gusts up to 45 kt. Wind waves 9 to 11 ft. W swell 6 to 8 ft at 17 seconds. Showers.
Sat..S winds 20 to 30 kt with gusts up to 40 kt. Wind waves 7 to 8 ft. W swell 7 to 9 ft at 14 seconds. Showers and a slight chance of Thunderstorms.
Sat night..SW winds 10 to 15 kt. Wind waves 4 to 5 ft. W swell 8 to 10 ft at 12 seconds. Rain likely.
Sun..NW winds 5 to 10 kt. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 12 seconds. A chance of rain.
Sun night..N winds 5 to 15 kt. Wind waves 2 to 3 ft. W swell 4 to 6 ft at 11 seconds.
Mon..NW winds 5 to 15 kt. Wind waves 1 ft. W swell 3 to 5 ft and sw around 2 ft.
Tue..N winds around 5 kt. Wind waves 1 ft. W swell 4 to 6 ft and S around 2 ft. Winds and wind waves higher in and near Thunderstorms.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 5 to 6 ft with a dominant period of 7 seconds... Increasing to 6 to 8 feet at 17 seconds tonight. Across the bar...seas 6 to 7 ft with a dominant period of 7 seconds... Increasing to 7 to 9 feet at 17 seconds tonight. Maximum ebb current of 1.3 kt at 12:31 am Saturday and 2.4 kt at 01:13 pm Saturday.
.small craft advisory in effect until 3 pm pst this afternoon...
.gale warning in effect through late tonight...
Rest of today..S winds 25 to 30 kt with gusts up to 45 kt. Wind waves 9 to 10 ft. W swell 5 to 7 ft at 17 seconds. Showers.
Tonight..S winds 25 to 30 kt with gusts up to 45 kt. Wind waves 9 to 11 ft. W swell 6 to 8 ft at 17 seconds. Showers.
Sat..S winds 20 to 30 kt with gusts up to 40 kt. Wind waves 7 to 8 ft. W swell 7 to 9 ft at 14 seconds. Showers and a slight chance of Thunderstorms.
Sat night..SW winds 10 to 15 kt. Wind waves 4 to 5 ft. W swell 8 to 10 ft at 12 seconds. Rain likely.
Sun..NW winds 5 to 10 kt. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 12 seconds. A chance of rain.
Sun night..N winds 5 to 15 kt. Wind waves 2 to 3 ft. W swell 4 to 6 ft at 11 seconds.
Mon..NW winds 5 to 15 kt. Wind waves 1 ft. W swell 3 to 5 ft and sw around 2 ft.
Tue..N winds around 5 kt. Wind waves 1 ft. W swell 4 to 6 ft and S around 2 ft. Winds and wind waves higher in and near Thunderstorms.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 5 to 6 ft with a dominant period of 7 seconds... Increasing to 6 to 8 feet at 17 seconds tonight. Across the bar...seas 6 to 7 ft with a dominant period of 7 seconds... Increasing to 7 to 9 feet at 17 seconds tonight. Maximum ebb current of 1.3 kt at 12:31 am Saturday and 2.4 kt at 01:13 pm Saturday.
PZZ500 134 Pm Pst Fri Dec 6 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A pair of frontal boundaries will move through the waters from north to south over the next 24 to 36 hours, bringing unsettled weather today and into the weekend. Gusty southerly gale force winds will develop ahead of these boundaries as they move southward through the waters and generate large wind waves and hazardous seas. Moderate west swell will gradually build to around 10 to 12 feet tonight and continue through Saturday night. Showers and isolated Thunderstorms will be possible this evening through Saturday.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A pair of frontal boundaries will move through the waters from north to south over the next 24 to 36 hours, bringing unsettled weather today and into the weekend. Gusty southerly gale force winds will develop ahead of these boundaries as they move southward through the waters and generate large wind waves and hazardous seas. Moderate west swell will gradually build to around 10 to 12 feet tonight and continue through Saturday night. Showers and isolated Thunderstorms will be possible this evening through Saturday.
7 Day Forecast for Marine Location Near Daly City, CA
Hourly EDIT Helplocation: 37.77, -122.54 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS66 KMTR 070010 AFDMTR
Area Forecast Discussion National Weather Service San Francisco Bay Area 410 PM PST Fri Dec 6 2019
SYNOPSIS. Southerly winds will continue to ramp up ahead of an incoming cold front. Rain will develop across the North Bay this afternoon and then spread southward overnight. Showery and cool on Saturday with isolated thunderstorms possible. Lingering showers on Sunday but trending drier by afternoon. Dry weather returns Monday and Tuesday with a slight chance of rain by midweek.
DISCUSSION. as of 1:30 PM PST Friday . The approaching storm system continues to slowly near the coast. The low center is now about 550 miles west off Cape Mendocino, with the associated frontal band nearing the North Coast. Latest computer models bring the first frontal band into Sonoma County just after 00Z (4 PM PST), holding off rain in San Francisco until after 7 PM. The bulk of the rainfall with this first wave is forecast to fall in the North Bay, and to a lesser extent, the Santa Cruz Mountains. A second front will sweep through the entire district on Saturday and will bring more rainfall to the area through Saturday evening, along with a slight chance of thunderstorms with small hail possible. The upper low will then finally move south along the coast on Sunday keeping showers going in its vicinity as it exits the area Sunday night. Latest storm-total rainfall estimates still show some 3-4 inch maxes for the North Bay hills with 1.5-3 inches for the Santa Cruz/Santa Lucia mtns. Rain shadowed Santa Salinas Valley 0.25-0.50 on average with 0.50-1.00 inch elsewhere through Sunday night.
The Flash Flood watch for the Kincade burn area still looks valid with all models showing a bullseye of qpf in that area and the front strongest as it moves through northern Sonoma county this evening. Will need to monitor any convective lines and short term rain rates that could lead to problems over the burn area.
A Wind Advisory remains in effect for all areas through Saturday morning. Strongest winds are expected along the coast and in the higher terrain. Gusty southeast winds will ramp up again during the day Saturday as the second front moves through.
Dry weather returns Monday and Tuesday with seasonable temperatures as high pressure rebuilds. A weak front may try and knock into the ridge by Wednesday with a slight chance of rain, but it looks insignificant at this time.
AVIATION. as of 4:06 PM PST Friday . Cigs have been up and down all day but as the leading edge of the rainband approaches cigs should drop into MVFR range with IFR at STS. Rain will be light with this band except for some moderate rain in the North Bay. A second frontal system will move through after 18Z Saturday and could contain moderate to locally heavy rain. Southeast winds expected to remain gusty through Saturday with gusts as high as 30-35 kt although winds may come down a little in between fronts.
Vicinity of KSFO . Cigs lowering to MVFR with bases 2500-3000 feet. Cigs lowering further to near 1500 ft after 06Z. Light rain begins after 02Z. Winds increasing to 20-25 kt gusting 30-35 kt. Cigs may lift briefly after the first frontal passage and winds may decrease slightly. This will occur after 09Z. Conditions deteriorating again late Saturday morning as the second front approaches. Stronger winds above the surface could cause LLWS up to 2000 ft.
SFO Bridge Approach . Similar to KSFO.
Monterey Bay Terminals . Stratocumulus deck of clouds will keep cigs around 3000 ft at MRY. VFR cigs at SNS. First front is weakening and will bring MVFR cigs and only occasional light rain after 06Z. The second front will bring a better chance of rain on Saturday. Gusty south to southeast winds to 20-25 kt at MRY and 30-35 kt in the Salinas Valley. Stronger winds above the surface could cause LLWS at MRY up to 2000 ft.
MARINE. as of 03:37 PM PST Friday . A pair of frontal boundaries will move through the waters from north to south over the next 24 to 36 hours, bringing unsettled weather today and into the weekend. Gusty southerly gale force winds will develop ahead of these boundaries as they move southward through the waters and generate large wind waves and hazardous seas. Moderate west swell will gradually build to around 10 to 12 feet tonight and continue through Saturday night. Showers and isolated thunderstorms will be possible this evening through Saturday.
MTR WATCHES/WARNINGS/ADVISORIES. Tngt. Wind Advisory . CAZ006-505>513-516>518-528>530 Flash Flood Watch . CAZ506-507 GLW . SF Bay until 3 AM GLW . Pt Arena to Pt Reyes 0-10 nm until 3 AM GLW . Pt Reyes to Pigeon Pt 0-10 nm until 3 AM GLW . Pigeon Pt to Pt Pinos 0-10 nm until 3 AM GLW . Pt Pinos to Pt Piedras Blancas 0-10 nm until 3 AM GLW . Pt Arena to Pigeon Pt 10-60 nm until 3 AM GLW . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 3 AM SCA . Mry Bay
PUBLIC FORECAST: Sims AVIATION: W Pi MARINE: DRP
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| 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 | 3 PM | 4 PM | |
| Last 24hr | E | NW | -- | -- | E | NE | S | -- | SW | NE | -- | SW | SE | S | E | SE | SE G11 | SE G17 | SE G16 | SE G13 | S G8 | SE G10 | S G15 | S G10 |
| 1 day ago | N | N | N | N G13 | NE G9 | NE | N | E | NE | NE | NE | NE | NE | -- | E | N | E | NE | NE | NE | NE | SW | -- | NW |
| 2 days ago | N | N | NE | N | N G14 | N G17 | N G10 | N | N | N | N G15 | N | N | N | N G17 | N | N G13 | NE | NE | N | NE | N | N | N |
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 | 14 mi | 68 min | SSE 15 G 24 | 10.00 mi | Mostly Cloudy | 61°F | 48°F | 65% | 1013.9 hPa |
| Oakland, Metro Oakland International Airport, CA | 18 mi | 71 min | S 21 | 10.00 mi | Overcast and Breezy | 62°F | 48°F | 62% | 1013.9 hPa |
| Half Moon Bay Airport, CA | 18 mi | 64 min | SSE 22 G 29 | 2.50 mi | Fog/Mist and Breezy | 57°F | 53°F | 88% | 1014.2 hPa |
| San Carlos Airport, CA | 23 mi | 66 min | SSE 12 G 19 | 10.00 mi | Mostly Cloudy | 63°F | 48°F | 60% | 1014.6 hPa |
| Hayward, Hayward Air Terminal, CA | 24 mi | 70 min | S 15 | 10.00 mi | Mostly Cloudy | 62°F | 48°F | 62% | 1015 hPa |
Link to 5 minute data for KSFO
Wind History from SFO (wind in knots)
| 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 | 3 PM | 4 PM | |
| Last 24hr | N | N | N | N | Calm | Calm | Calm | E | Calm | NE | SE | Calm | Calm | Calm | Calm | SE | E G18 | E | E | E | SE | S | SE G30 | SE G24 |
| 1 day ago | NE | Calm | Calm | E | Calm | Calm | Calm | Calm | Calm | NE | E | SW | E | SE | E | SE | NE | E | NE | NE | Calm | Calm | SW | Calm |
| 2 days ago | Calm | Calm | Calm | Calm | Calm | Calm | SE | SE | NW | Calm | Calm | N | N | N | NE | NE | NE | NE | NE | NE | NE | Calm | N | S |
Tide / Current Tables for Ocean Beach, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataOcean Beach
Click for Map
Fri -- 01:37 AM PST Moonset
Fri -- 06:46 AM PST 5.47 feet High Tide
Fri -- 07:11 AM PST Sunrise
Fri -- 01:15 PM PST 1.63 feet Low Tide
Fri -- 02:04 PM PST Moonrise
Fri -- 04:50 PM PST Sunset
Fri -- 06:57 PM PST 4.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 01:37 AM PST Moonset
Fri -- 06:46 AM PST 5.47 feet High Tide
Fri -- 07:11 AM PST Sunrise
Fri -- 01:15 PM PST 1.63 feet Low Tide
Fri -- 02:04 PM PST Moonrise
Fri -- 04:50 PM PST Sunset
Fri -- 06:57 PM PST 4.01 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 |
| 1.4 | 1.6 | 2.3 | 3.1 | 4.1 | 4.9 | 5.4 | 5.5 | 5.2 | 4.5 | 3.6 | 2.7 | 2 | 1.6 | 1.7 | 2.2 | 2.8 | 3.4 | 3.9 | 4 | 3.8 | 3.4 | 2.8 | 2.2 |
Tide / Current Tables for South Channel, San Francisco Bay Approach, California Current
EDIT (on/off) Help One Week of DataSouth Channel
Click for Map
Fri -- 01:30 AM PST 0.01 knots Slack
Fri -- 01:37 AM PST Moonset
Fri -- 04:38 AM PST 1.08 knots Max Flood
Fri -- 07:11 AM PST Sunrise
Fri -- 08:04 AM PST -0.00 knots Slack
Fri -- 10:48 AM PST -1.16 knots Max Ebb
Fri -- 02:04 PM PST Moonrise
Fri -- 02:29 PM PST 0.01 knots Slack
Fri -- 04:51 PM PST Sunset
Fri -- 05:18 PM PST 0.87 knots Max Flood
Fri -- 08:27 PM PST -0.00 knots Slack
Fri -- 10:54 PM PST -0.98 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 01:30 AM PST 0.01 knots Slack
Fri -- 01:37 AM PST Moonset
Fri -- 04:38 AM PST 1.08 knots Max Flood
Fri -- 07:11 AM PST Sunrise
Fri -- 08:04 AM PST -0.00 knots Slack
Fri -- 10:48 AM PST -1.16 knots Max Ebb
Fri -- 02:04 PM PST Moonrise
Fri -- 02:29 PM PST 0.01 knots Slack
Fri -- 04:51 PM PST Sunset
Fri -- 05:18 PM PST 0.87 knots Max Flood
Fri -- 08:27 PM PST -0.00 knots Slack
Fri -- 10:54 PM PST -0.98 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 |
| -0.7 | -0.3 | 0.3 | 0.8 | 1 | 1.1 | 0.9 | 0.6 | 0 | -0.6 | -1.1 | -1.2 | -1 | -0.8 | -0.3 | 0.3 | 0.7 | 0.9 | 0.8 | 0.6 | 0.2 | -0.3 | -0.8 | -1 |
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 (20,4,5,8)
(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. |