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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
Sunrise 6:47AM | Sunset 5:57PM | Saturday February 23, 2019 4:42 PM PST (00:42 UTC) | Moonrise 10:56PM | Moonset 9:36AM | Illumination 79% | ![]() |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 213 Pm Pst Sat Feb 23 2019
Tonight..W winds up to 10 kt...becoming east after midnight.
Sun..S winds up to 10 kt.
Sun night..SW winds 5 to 15 kt. A slight chance of rain.
Mon..S winds 15 to 25 kt with gusts up to 30 kt. A chance of rain.
Mon night..S winds 15 to 25 kt with gusts up to 30 kt. Rain likely.
Tue..S winds 20 to 30 kt with gusts up to 40 kt. Rain.
Tue night..S winds 20 to 30 kt with gusts up to 40 kt. Rain.
Wed..S winds 5 to 15 kt. A chance of rain.
Thu..W winds 5 to 10 kt.
Tonight..W winds up to 10 kt...becoming east after midnight.
Sun..S winds up to 10 kt.
Sun night..SW winds 5 to 15 kt. A slight chance of rain.
Mon..S winds 15 to 25 kt with gusts up to 30 kt. A chance of rain.
Mon night..S winds 15 to 25 kt with gusts up to 30 kt. Rain likely.
Tue..S winds 20 to 30 kt with gusts up to 40 kt. Rain.
Tue night..S winds 20 to 30 kt with gusts up to 40 kt. Rain.
Wed..S winds 5 to 15 kt. A chance of rain.
Thu..W winds 5 to 10 kt.
PZZ500 213 Pm Pst Sat Feb 23 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light west winds will continue tonight. Winds will turn southerly on Sunday and ramp up early in the week. Light to moderate northwest swell will persist through the week.
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light west winds will continue tonight. Winds will turn southerly on Sunday and ramp up early in the week. Light to moderate northwest swell will persist through the week.
7 Day Forecast for Marine Location Near Oakland, CA
Hourly EDIT Helplocation: 37.78, -122.25 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
  (on/off)  Help NOTE: mouseover dotted underlined text for definitionFxus66 kmtr 240023 afdmtr area forecast discussion national weather service san francisco bay area 423 pm pst Sat feb 23 2019 Synopsis Dry and seasonably cool conditions will prevail across most of the region through the remainder of this weekend. The exception may be the north bay where there is a chance of light rain late tonight and on Sunday. A plume of moisture will bring periods of moderate to heavy rain to the majority of the region for the first half of next week, though the exact positioning of the heaviest rains continues to vary. Another potentially wet system may bring more rain to the region late next week and into the following weekend. Discussion As of 2:00 pm pst Saturday... Water vapor imagery continues to show northwesterly flow aloft prevailing across california this afternoon. There is plenty of moisture streaming through this flow in the form of high clouds ahead of the next system. As a result, skies are mostly cloudy this afternoon, with temperatures running similar to this time yesterday. Temperatures will still be cool tonight, but not quite as cold as things start to moderate with the high clouds in place. The upper level ridge of the pacific will keep restrict how quickly the next pacific storm digs south over the next 24 to 36 hours. As a result, the front will stall tonight and during the day on Sunday, focusing the main moisture plume along the oregon and california border and the far northern california coast. Current composite radar is already showing some light showers mainly from CAPE mendocino northward. This trend will likely continue tonight and into Sunday, with the heaviest rain developing and remaining well to our north. That being said, a few light rain showers sag south of point area later tonight or during the day on Sunday. Monday through Wednesday is the time period to watch for us, as things will likely start to get interesting for the central coast sometime Monday afternoon or evening. At this time, the 12z GFS is still the fastest with moving the rain into and south of the bay area proper during the Monday morning commute. Meanwhile, the 12z nam, ecmwf, and canadian hold off rain any rain until at least the midafternoon and more likely the evening commute. That being said, our north bay counties and mountains will likely see periods of moderate to heavy rain develop during the day on Monday and continue through Wednesday. The models are still disagreeing with where the heaviest rainfall will occur. Most are focusing on areas north of the golden gate bridge up to the mendocino coast. However, the GFS shows the north bay and bay area getting hit rather harder. This is leading to low confidence in the exact placement of the heaviest rainfall. However, believe the north bay will likely see quite a bit of rainfall regardless. For now, it is not out of the question that 3 to 5 inches of rain with locally amounts upward of 7 inches will be possible, leading to flooding and more landslides or debris flows. The main take away though is a series of disturbances will move along the stalled front between Monday and Wednesday, bringing relatively persistent rains, with periods of moderate to heavy rain possible. Areas from santa cruz county northward will likely see a decent amount of rain, with the north bay seeing the most at |
this time, if models continue to trend this way. These various disturbances will also bring periods of gusty winds. Therefore, expect rapid rises along area rivers, streams, and creeks to be possible the first part of the work week. Trees and powerlines will also likely fall, as the grounds remain saturated. Although some residual passing showers will be possible on Thursday and Friday, they will be our in between days, before another potentially more potent system takes aim at the region for the weekend. For now, this latter system looks like it could be wetter than the first as it has a better tap to the tropics. However, the models are moving it through the region much faster. Therefore, if comparing to the current system, they might actually have similar impacts. Regardless, this week of weather bears watching, and we encourage everyone to prepare early and stay weather aware. Palmer Aviation As of 4:23 pm pst Saturday...VFR, mid and high clouds continue to advance in over the CWA from the west. MVFR cloud ceilings are likely over the north bay Sunday morning as a nearly stationary east to west 850 mb elevated frontal boundary develops, 850 mb warm air advection could result in spotty briefly very light precip vicinity ksts per recent NAM hrrr output. A separate, nearly stationary 925 mb frontal boundary develops nearby the monterey bay terminals Sunday morning which may be the focus for MVFR ceilings possibly lowering to ifr; not advertised in the monterey bay 00z TAF cycle as of yet, but will look into it a bit more this evening and amend tafs as needed. Vicinity of ksfo...VFR, westerly wind 10 to 15 knots until 04z this evening, light wind tonight becoming SE Sunday morning. An onshore wind near 10 knots resumes later Sunday. Sfo bridge approach... Similar to sfo. Monterey bay terminals...VFR, w-nw winds near 10 knots diminishing and becoming light SE wind by mid evening. SE wind Sunday morning shifting back to onshore near 10 knots Sunday afternoon.VFR is near high confidence through the evening, but confidence level in cigs lowers late tonight and Sunday morning, as mentioned if a lower level (925 mb level) front develops it may be the focus for ceilings lowering from MVFR to ifr, will look into it a bit more by 06z TAF cycle and of course amend tafs prior to this time as needed. Hydrology A pacific storm may bring moderate to heavy rain to areas from santa cruz county northward for Monday through Wednesday, that will likely cause rapid rises along area streams, creeks, and rivers, especially the russian river. An esf has been issued. Marine As of 3:34 pm pst Saturday... Generally light west winds will continue tonight. Winds will turn southerly on Sunday and ramp up early in the week. Light to moderate northwest swell will persist through the week. Mtr watches warnings advisories Tngt None. Public forecast: palmer aviation: canepa marine: sims visit us at |
Weather Reporting Stations
EDIT (on/off)  Help NOTE: Click on distance to see the station location on a mapStations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
LNDC1 | 2 mi | 42 min | W 6 G 8.9 | 53°F | 1026 hPa (-0.5) | |||
AAMC1 - 9414750 - Alameda, CA | 3 mi | 42 min | W 5.1 G 7 | 53°F | 52°F | 1026.3 hPa (-0.6) | ||
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA | 4 mi | 42 min | WSW 9.9 G 12 | |||||
OBXC1 | 5 mi | 42 min | 52°F | 41°F | ||||
OKXC1 - 9414776 - Oakland (Berth 34), CA | 5 mi | 42 min | W 6 G 7 | 52°F | 1026 hPa (-0.6) | |||
PXOC1 - 9414311 - San Francisco (Pier 1), CA | 8 mi | 42 min | SW 5.1 G 9.9 | 52°F | 1025 hPa (-0.6) | |||
PXSC1 | 8 mi | 42 min | 53°F | 41°F | ||||
PPXC1 - 9414847 - Richmond (Point Potrero), CA | 11 mi | 42 min | SW 6 G 8 | 53°F | 1026.1 hPa (-0.8) | |||
FTPC1 - 9414290 - San Francisco, CA | 12 mi | 42 min | W 7 G 8.9 | 52°F | 54°F | 1026.3 hPa (-0.6) | ||
TIBC1 - Tiburon Pier, San Francisco Bay, CA | 13 mi | 43 min | SSW 5.1 | 52°F | 1026 hPa | |||
RCMC1 - 9414863 - Richmond, CA | 13 mi | 42 min | SSW 4.1 G 7 | 53°F | 52°F | 1025.6 hPa (-0.8) | ||
RTYC1 - 9414523 - Redwood City, CA | 19 mi | 42 min | N 11 G 14 | 53°F | 52°F | 1026.1 hPa (-0.8) | ||
UPBC1 | 19 mi | 42 min | Calm G 1.9 | |||||
MZXC1 - 9415102 - Martinez-Amorco CA | 19 mi | 42 min | NE 1.9 G 4.1 | 53°F | 49°F | 1025.3 hPa (-1.1) | 40°F | |
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA | 19 mi | 42 min | SW 12 G 13 | 53°F | 1025.2 hPa (-1.1) | |||
PCOC1 - 9415144 - Port Chicago, CA | 22 mi | 42 min | ENE 5.1 G 5.1 | 53°F | 49°F | 1025.4 hPa (-1.2) | ||
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA | 26 mi | 42 min | NE 1.9 G 2.9 | 54°F | 1025.4 hPa (-0.9) | |||
SFXC1 - San Francisco Bay Reserve, CA | 31 mi | 117 min | W 1.9 | 56°F | 1026 hPa | 38°F | ||
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA | 31 mi | 32 min | W 5.8 G 7.8 | 52°F | 54°F | 1026.8 hPa | ||
PRYC1 - 9415020 - Point Reyes, CA | 41 mi | 42 min | 53°F | 1026 hPa (-0.5) |
Wind History for Alameda, CA
(wind in knots) EDIT (on/off)  Help5 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 | W | W G7 | W | W | E | E | E | E | E | E G11 | E G10 | E G12 | SE | E | E | E | SE | SE G8 | SE | SE | SE | W | W G7 | W |
1 day ago | N G16 | N G14 | N G15 | N G14 | N G14 | N G21 | N G21 | N G17 | NW G7 | N G12 | N G13 | N G10 | E | E | E G4 | E | SE | SW | SW | SW | SW | SE | W | SW |
2 days ago | W G11 | W G16 | W G13 | W G11 | W G10 | NW G10 | W G9 | NW G10 | NW G15 | N G17 | N G20 | N G14 | N G15 | N G11 | N G9 | N G11 | N G12 | N G12 | NW | W G14 | NW G13 | NW G23 | NW G18 |
Airport Reports
EDIT (on/off)  Help Click EDIT to display multiple airportsAirport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Oakland, Metro Oakland International Airport, CA | 6 mi | 49 min | W 8 | 10.00 mi | Mostly Cloudy | 54°F | 41°F | 62% | 1026 hPa |
Hayward, Hayward Air Terminal, CA | 11 mi | 48 min | WNW 10 | 10.00 mi | Mostly Cloudy | 55°F | 41°F | 59% | 1026.8 hPa |
San Francisco, San Francisco International Airport, CA | 12 mi | 46 min | W 12 | 10.00 mi | Mostly Cloudy | 53°F | 39°F | 61% | 1025.8 hPa |
Concord, Buchanan Field, CA | 17 mi | 49 min | N 0 | 10.00 mi | A Few Clouds | 58°F | 36°F | 44% | 1024 hPa |
San Carlos Airport, CA | 17 mi | 49 min | W 7 | 10.00 mi | Mostly Cloudy | 55°F | 41°F | 59% | 1025.7 hPa |
Palo Alto Airport, CA | 22 mi | 55 min | NNW 10 | 10.00 mi | Mostly Cloudy | 0°F | 0°F | % | 1026.4 hPa |
Livermore, Livermore Municipal Airport, CA | 23 mi | 49 min | NW 4 | 10.00 mi | Mostly Cloudy | 55°F | 37°F | 51% | 1025.1 hPa |
Wind History from OAK (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 | W | W | W | NW | Calm | E | E | E | E | E | SE | SE | SE | SE | E | SE | SE | SE | S | Calm | Calm | W | W | W |
1 day ago | N | N G18 | N | N | NW | N | N | N | NW | N | Calm | Calm | N | NE | NE | NE | S | SW | SW | W | W | SW | SW | W |
2 days ago | W | NW | NW | NW G18 | NW G17 | NW | NW | NW | NW | NW | NW | N | N | N | N | NW | NW | NW | NW | NW G18 | N G19 | N G20 | N G24 | N |
Tide / Current Tables for Oakland Harbor, Park Street Bridge, San Francisco Bay, California
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of DataOakland Harbor
Click for Map
Sat -- 02:58 AM PST 6.61 feet High Tide
Sat -- 06:48 AM PST Sunrise
Sat -- 08:59 AM PST 0.94 feet Low Tide
Sat -- 09:35 AM PST Moonset
Sat -- 03:11 PM PST 5.75 feet High Tide
Sat -- 05:56 PM PST Sunset
Sat -- 09:03 PM PST 0.97 feet Low Tide
Sat -- 10:56 PM PST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 02:58 AM PST 6.61 feet High Tide
Sat -- 06:48 AM PST Sunrise
Sat -- 08:59 AM PST 0.94 feet Low Tide
Sat -- 09:35 AM PST Moonset
Sat -- 03:11 PM PST 5.75 feet High Tide
Sat -- 05:56 PM PST Sunset
Sat -- 09:03 PM PST 0.97 feet Low Tide
Sat -- 10:56 PM PST 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 |
3.9 | 5.3 | 6.2 | 6.6 | 6.2 | 5.1 | 3.7 | 2.2 | 1.3 | 0.9 | 1.3 | 2.1 | 3.3 | 4.4 | 5.3 | 5.7 | 5.5 | 4.7 | 3.5 | 2.3 | 1.3 | 1 | 1.3 | 2.1 |
Tide / Current Tables for Oakland Harbor WebStreeter Street, San Francisco Bay, California Current
EDIT (on/off)  Help One Week of DataOakland Harbor WebStreeter Street
Click for Map
Sat -- 02:37 AM PST -0.00 knots Slack
Sat -- 05:18 AM PST -1.19 knots Max Ebb
Sat -- 06:48 AM PST Sunrise
Sat -- 08:57 AM PST 0.01 knots Slack
Sat -- 09:35 AM PST Moonset
Sat -- 12:02 PM PST 0.96 knots Max Flood
Sat -- 03:06 PM PST -0.00 knots Slack
Sat -- 05:40 PM PST -1.02 knots Max Ebb
Sat -- 05:56 PM PST Sunset
Sat -- 09:12 PM PST 0.01 knots Slack
Sat -- 10:56 PM PST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 02:37 AM PST -0.00 knots Slack
Sat -- 05:18 AM PST -1.19 knots Max Ebb
Sat -- 06:48 AM PST Sunrise
Sat -- 08:57 AM PST 0.01 knots Slack
Sat -- 09:35 AM PST Moonset
Sat -- 12:02 PM PST 0.96 knots Max Flood
Sat -- 03:06 PM PST -0.00 knots Slack
Sat -- 05:40 PM PST -1.02 knots Max Ebb
Sat -- 05:56 PM PST Sunset
Sat -- 09:12 PM PST 0.01 knots Slack
Sat -- 10:56 PM PST 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 |
1.1 | 0.8 | 0.4 | -0.3 | -0.9 | -1.2 | -1.1 | -0.8 | -0.5 | 0 | 0.5 | 0.8 | 1 | 0.9 | 0.5 | 0.1 | -0.5 | -0.9 | -1 | -0.8 | -0.5 | -0.1 | 0.3 | 0.7 |
Weather Map and Satellite Images
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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 (19,4,5,8)
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Ground Weather Radar Station San Francisco Bay Area, 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. |