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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 6:30AM | Sunset 7:53PM | Friday August 23, 2019 3:51 PM PDT (22:51 UTC) | Moonrise 11:31PM | Moonset 1:06PM | Illumination 41% |  |
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 225 Pm Pdt Fri Aug 23 2019
.small craft advisory in effect until 9 pm pdt this evening...
.small craft advisory in effect from Saturday afternoon through Saturday evening...
Tonight..SW winds 15 to 25 kt with gusts to 30 kt, diminishing to 5 to 10 kt overnight.
Sat..SW winds 5 to 10 kt, increasing to 15 to 25 kt with gusts to 30 kt in the afternoon.
Sat night..SW winds 15 to 25 kt with gusts to 30 kt, diminishing to 5 to 10 kt overnight.
Sun..SW winds 5 to 10 kt, increasing to 15 to 25 kt in the afternoon.
Sun night..SW winds 15 to 25 kt, diminishing to 5 to 10 kt overnight.
Mon..SW winds 5 to 10 kt, increasing to 15 to 25 kt in the afternoon.
Mon night..SW winds 10 to 20 kt, diminishing to 5 to 10 kt overnight.
Tue..SW winds 10 to 15 kt.
Wed..SW winds 10 to 15 kt.
.small craft advisory in effect until 9 pm pdt this evening...
.small craft advisory in effect from Saturday afternoon through Saturday evening...
Tonight..SW winds 15 to 25 kt with gusts to 30 kt, diminishing to 5 to 10 kt overnight.
Sat..SW winds 5 to 10 kt, increasing to 15 to 25 kt with gusts to 30 kt in the afternoon.
Sat night..SW winds 15 to 25 kt with gusts to 30 kt, diminishing to 5 to 10 kt overnight.
Sun..SW winds 5 to 10 kt, increasing to 15 to 25 kt in the afternoon.
Sun night..SW winds 15 to 25 kt, diminishing to 5 to 10 kt overnight.
Mon..SW winds 5 to 10 kt, increasing to 15 to 25 kt in the afternoon.
Mon night..SW winds 10 to 20 kt, diminishing to 5 to 10 kt overnight.
Tue..SW winds 10 to 15 kt.
Wed..SW winds 10 to 15 kt.
PZZ500 225 Pm Pdt Fri Aug 23 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 diminish across the coastal waters through tonight with strongest winds remaining over the northern outer waters. Steep, short period northwesterly swells will also diminish tonight and through the weekend with period becoming 7 to 8 seconds. Southwesterly winds are forecast over the near shore coastal waters this weekend. A moderate southerly swell will arrive on Sunday and persist through early next week with light 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... Northwest winds will continue to diminish across the coastal waters through tonight with strongest winds remaining over the northern outer waters. Steep, short period northwesterly swells will also diminish tonight and through the weekend with period becoming 7 to 8 seconds. Southwesterly winds are forecast over the near shore coastal waters this weekend. A moderate southerly swell will arrive on Sunday and persist through early next week with light northwesterly swell continuing through the period.
7 Day Forecast for Marine Location Near Kensington, CA
Hourly EDIT Helplocation: 37.9, -122.28 debug
Area Discussion for - San Francisco/Monterey Bay Area, CA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 kmtr 232025 afdmtr area forecast discussion national weather service san francisco bay area 125 pm pdt Fri aug 23 2019 Synopsis A shallow marine layer along the coast with onshore winds will bring seasonable temperatures to the bay area today. High pressure begins to strengthen and rebuild over the state this weekend allowing for inland areas to warm back into the 90s. Milder conditions will persist near the coast with a shallow marine layer. The ridge will weaken slightly by Tuesday and Wednesday as the remnants of tropical storm ivo pass west of the golden gate. This may bring some increasing clouds and more humidity to the region. Discussion As of 1:25 pm pdt Friday... This morning's low clouds that blanketed coastal portions of the san francisco bay area and much of the monterey bay area continue to mix-out this afternoon. With the exception of some stubborn low clouds lingering around monterey, half moon bay, and around the golden gate, much of the population across the region can expect mostly clear skies through the rest of the afternoon. Forecast highs this afternoon will reach the 60s to 70s along the coast with interior locations warming to the 80s and 90s, generally falling within several degrees of late august climatological normals. Upper level ridge is forecast to build over the next several days, allowing for a gradual warming trend through the weekend and into next week for interior locations. High temperatures by Sunday and Monday will reach the upper 80s to middle 90s for the north bay mountains and valleys, interior east bay, south bay, as well as interior monterey and san benito counties. Overall, heat risk for inland areas will be low to locally moderate, mainly impacting those sensitive to the heat. Coastal communities can expect to see continued onshore flow that will keep temperatures in check. Additionally, the ridge is expected to keep the marine layer rather shallow, so morning low cloud potential will generally be limited to the immediate coast and exposed coastal valleys. Tropical storm ivo, presently positioned several hundred miles sw of the tip of the baja peninsula, is forecast to move north over the next several days and weaken as it encounters cooler waters. Remnant mid high level moisture is expected to advect north to |
the golden state by the early to middle part of next week, though there remains plenty of uncertainty as to the track. The latest run of the ECMWF tracks the bulk of the remnant moisture in the 700-500 mb layer offshore. The GFS brings the moisture a bit closer to our area with increased rhs values as far east as the sierra. Will have to continue to keep a close eye on the track of this remnant moisture as this could introduce the possibility of some isolated thunderstorms for higher elevations in parts of the state. At a minimum, much of the region can expect increased mid high clouds, as well as an increase in surface dewpoints with southerly flow. Aviation As of 10:56 am pdt Friday... Low clouds are quickly clearing to the coast as a southerly surge of stratus makes a run northward. Anticipate a return of stratus this evening and tonight to coastal terminals as the onshore gradient increases. Confidence is low as to the extent of the stratus intrusion overnight as the marine layer is expected to remain shallow. Therefore have limited cigs to mainly coastal terminals. Light onshore winds will ramp up this afternoon to around 10 to 15 kt. Vicinity of ksfo...VFR conditions will prevail with ifr MVFR cigs likely to return after midnight tonight. Low confidence. Light winds this morning becoming westerly around 15kt after 21z. Sfo bridge approach... Similar to ksfo. Monterey bay terminals... Ifr CIGS over kmry will scatter out between 19z and 20z this afternoon with an early return expected between 03z-05z this evening. Light winds this morning becoming westerly 5 to 10kt this afternoon. Marine As of 9:00 am pdt Friday... Northwest winds will decrease across the area today but remain breezy over the northern outer waters. Steep northwesterly swell at 8 to 10 seconds will decrease today through the weekend with period becoming 7 to 8 seconds. Southwesterly winds are forecast over the near shore coastal waters this weekend. A moderate southerly swell will arrive on Sunday and persist through early next week with light northwesterly swell continuing through the period. Mtr watches warnings advisories Tday Sca... Pt arena to pigeon pt 10-60 nm sca... Sf bay public forecast: rowe aviation: cw marine: cw 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 Potrero Richmond, CA
(wind in knots) EDIT (on/off) Help| 4 PM | 5 PM | -12 PM | 7 PM | 8 PM | 9 PM | -12 PM | 11 PM | 12 AM | 1 AM | 2 AM | -12 PM | 4 AM | -12 PM | 6 AM | 7 AM | 8 AM | 9 AM | -12 PM | 11 AM | -12 PM | 1 PM | 2 PM | 3 PM | |
| Last 24hr | SW G14 | SW G17 | S | S G22 | S | SW G15 | SW G14 | SW G13 | SW | SW G15 | SW G15 | SW G18 | SW G15 | SW G18 | SW G17 | SW G13 | SW G15 | SW G16 | ||||||
| 1 day ago | S G11 | W G20 | NW G17 | SW | S | S | S | S | S | S | S | S | S | S | SW | SW G12 | SW G10 | SW | ||||||
| 2 days ago | SW | SW | NW G15 | NW G15 | S | S | S | S | S | S | SE | S | SW G7 | SW | 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 |
| Concord, Buchanan Field, CA | 13 mi | 58 min | W 11 | 10.00 mi | Fair | 90°F | 57°F | 34% | 1006 hPa |
| Oakland, Metro Oakland International Airport, CA | 14 mi | 58 min | NW 14 | 10.00 mi | A Few Clouds | 75°F | 59°F | 58% | 1009.5 hPa |
| Hayward, Hayward Air Terminal, CA | 19 mi | 57 min | NW 8 | 10.00 mi | Fair | 79°F | 60°F | 52% | 1009.8 hPa |
| San Francisco, San Francisco International Airport, CA | 20 mi | 55 min | NNE 5 | 10.00 mi | A Few Clouds | 78°F | 59°F | 52% | 1008.7 hPa |
| Napa, Napa County Airport, CA | 21 mi | 57 min | SSW 18 | 10.00 mi | Fair and Breezy | 75°F | 60°F | 60% | 1007.8 hPa |
| Novato / Gnoss Field, CA | 22 mi | 76 min | SSE 7 | 5.00 mi | Fair with Haze | 90°F | 60°F | 38% | 1007.8 hPa |
Link to 5 minute data for KCCR
Wind History from CCR (wind in knots)
| 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 | 3 PM | |
| Last 24hr | W | W | W | SW | W | S | S | Calm | SW | NW | NW | Calm | N | N | NW | Calm | Calm | Calm | NW | NW | NW | NW | W | |
| 1 day ago | W | SW | SW | SW | SW | SW | W | S | S | S | S | S | S | S | S | S | S | SW | NE | NW | NW | |||
| 2 days ago | W | SW | SW | W | SW | SW | S | S | S | S | S | S | S | S | S | S | S | S | SW | NW | W | NW | NW |
Tide / Current Tables for Berkeley, California
EDIT Weekend mode (on/off) (on/off) Help One Week of DataBerkeley
Click for Map
Fri -- 12:21 AM PDT 1.51 feet Low Tide
Fri -- 06:31 AM PDT Sunrise
Fri -- 06:35 AM PDT 3.87 feet High Tide
Fri -- 07:58 AM PDT Last Quarter
Fri -- 11:40 AM PDT 2.86 feet Low Tide
Fri -- 02:06 PM PDT Moonset
Fri -- 06:17 PM PDT 5.69 feet High Tide
Fri -- 07:51 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:21 AM PDT 1.51 feet Low Tide
Fri -- 06:31 AM PDT Sunrise
Fri -- 06:35 AM PDT 3.87 feet High Tide
Fri -- 07:58 AM PDT Last Quarter
Fri -- 11:40 AM PDT 2.86 feet Low Tide
Fri -- 02:06 PM PDT Moonset
Fri -- 06:17 PM PDT 5.69 feet High Tide
Fri -- 07:51 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 |
| 1.5 | 1.6 | 1.9 | 2.4 | 3 | 3.5 | 3.8 | 3.8 | 3.7 | 3.4 | 3.1 | 2.9 | 2.9 | 3 | 3.4 | 4 | 4.7 | 5.3 | 5.7 | 5.6 | 5 | 4.1 | 3.1 | 2.2 |
Tide / Current Tables for Berkeley Yacht Harbor, California Current
EDIT (on/off) Help One Week of DataBerkeley Yacht Harbor
Click for Map
Fri -- 12:07 AM PDT 0.00 knots Slack
Fri -- 03:42 AM PDT 0.22 knots Max Flood
Fri -- 06:31 AM PDT Sunrise
Fri -- 07:51 AM PDT -0.00 knots Slack
Fri -- 07:58 AM PDT Last Quarter
Fri -- 09:27 AM PDT -0.08 knots Max Ebb
Fri -- 11:15 AM PDT 0.00 knots Slack
Fri -- 02:06 PM PDT Moonset
Fri -- 03:40 PM PDT 0.22 knots Max Flood
Fri -- 07:17 PM PDT -0.00 knots Slack
Fri -- 07:51 PM PDT Sunset
Fri -- 09:58 PM PDT -0.20 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:07 AM PDT 0.00 knots Slack
Fri -- 03:42 AM PDT 0.22 knots Max Flood
Fri -- 06:31 AM PDT Sunrise
Fri -- 07:51 AM PDT -0.00 knots Slack
Fri -- 07:58 AM PDT Last Quarter
Fri -- 09:27 AM PDT -0.08 knots Max Ebb
Fri -- 11:15 AM PDT 0.00 knots Slack
Fri -- 02:06 PM PDT Moonset
Fri -- 03:40 PM PDT 0.22 knots Max Flood
Fri -- 07:17 PM PDT -0.00 knots Slack
Fri -- 07:51 PM PDT Sunset
Fri -- 09:58 PM PDT -0.20 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 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | -0 | -0.1 | -0.1 | -0 | 0 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0 | -0.1 | -0.2 | -0.2 | -0.2 |
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 (18,4,5,8)
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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. |