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Marine Weather and Tides
Version 3.4 |
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive. 5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds. |
| Sunrise 5:46AM | Sunset 8:36PM | Friday June 23, 2017 3:15 AM PDT (10:15 UTC) | Moonrise 4:35AM | Moonset 7:15PM | Illumination 1% |  |
Marine Forecasts
EDIT (on/off) Help| PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 308 Am Pdt Fri Jun 23 2017 .small craft advisory in effect from 2 pm pdt this afternoon through this evening... Today..SW winds 15 to 25 kt. Tonight..SW winds 15 to 25 kt. Patchy fog after midnight. Sat..SW winds 15 to 25 kt. Patchy fog in the morning. Sat night..SW winds 15 to 25 kt. Sun..SW winds 15 to 25 kt. Mon..SW winds 10 to 20 kt. Tue..SW winds 5 to 15 kt. | PZZ500 308 Am Pdt Fri Jun 23 2017 Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds over the coastal waters today. Onshore winds increase later today and tonight through coastal gaps such as the golden gate gap and across the northern san francisco bay. Northwest winds return this weekend. Generally decreasing seas through the coming days. |
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 definition| Fxus66 kmtr 230600 afdmtr area forecast discussion national weather service san francisco bay area 1100 pm pdt Thu jun 22 2017 Hot and dry conditions will continue through Friday... Synopsis Heat advisories is now in place through 9 pm Friday for dangerously hot temperatures over the interior and hills. A shallow marine layer along the central coast will keep the monterey bay coastal areas much cooler. Temperatures will still be hot across the interior for Friday, just not as hot as this afternoon. Additional cooling will occur over the weekend. Discussion As of 8:59 pm pdt Thursday... Temperatures have cool slightly from their peak this afternoon however current reading continue to show inland temperatures in the 90s with a few locations still over 100 degrees. At 9 pm this evening the excessive heat warming will be allowed to expire and will be replace by a heat advisory over the interior portions of the east bay, santa clara county, as well as, the mountains of monterey and san benito county. Temperatures finished off the day in the 80s and 90 across much of the region with warmest inland temperatures topping out anywhere from 100 to 109. Our warmest readings today were livermore fire department, pinnacles and bradley that all shared the honors of reaching 109 degrees. Climatologically speaking temperatures were anywhere from 15 to 25 degrees above normal for today however no record were broken. A return of the onshore flow and a redeveloping albeit shallow marine layer kept temperatures from breaking out of the 70s along the immediate coast. Cooler temperatures are in store for Friday and into the weekend as the upper level ridge of high pressure, that has brought us this heat wave, shift east as an upper level trough approaches from the west. As a cooler airmass approaches the area, onshore flow strengthens and the marine layer gradually deepens, temperatures should gradually cool around 10 degrees on Friday. While cooler temperatures are in the forecast Friday a heat risk still exists across the interior portions of the east bay, santa clara county and the mountain of san benito and monterey counties. Please continue to take precaution as children, the elderly and pets are very sensitive to extreme heat and dehydration. Also with the high Sun angle sunburns and Sun poisoning are risks that can be prevented with sunscreen, hats, and appropriate clothing. From previous discussion... On Saturday temperatures will perhaps drop another few degrees as an upper level low begins to nudge toward the california coast. There could be some mid upper-level moisture that advects from the south southeast that may bring isolated thunder to our east in the sierra nevada. Probability of precipitation may have to increase over our area if future model runs continue to push the moisture toward the central coast. Early next week the upper low will push onshore and help to flatten the desert southwest ridge. Temperatures will finally return closer to normal with highs back to low 80s to low 90s for the interior east bay and south bay. There is even the possibility that areas could be several degrees below normal by Tuesday. Again, going back to today, dangerously hot weather is here for locations away from the coast. While a much welcomed cool down is will begin tomorrow, temperatures will still be elevated enough to present heat impacts, especially to those sensitive to the heat. Take the necessary precautions to beat the heat: drink plenty of fluids, limit outdoor activity during the hottest time of the day, wear light-colored clothing, put on a hat. If you don't have air conditioning, consider going to a community cooling center, a shopping center mall, or movie theater. If you're parked in the |
shade, or even if you're at the coast with outdoor temperatures in the 60s: never leave children, pets, or adults alone in a parked vehicle. Stay safe, stay hydrated, and beat the heat. Aviation As of 10:55 pm pdt Thursday... For 06z tafs. Widespread low clouds and fog have developed along the coastline and was beginning to move inland by late Thursday evening as the marine layer deepens. Expect ifr lifr conditions at coastal taf sites overnight, but there there is uncertainty as to whether low ceilings will develop around san francisco bay. Clearing is expected in most locations by 18z Friday. Low clouds will likely will develop earlier on Friday evening. Moderate forecast confidence except low confidence on ceilings overnight at ksfo. Vicinity of ksfo... Scattered low clouds expected overnight, but a southerly component to the low level flow should help keep ksfo vfr overnight. Ifr ceilings more likely to develop at koak than ksfo late tonight and into Friday morning. Light westerly winds overnight, becoming moderate on Friday afternoon. Sfo bridge approach... Similar to ksfo. Monterey bay terminals... Ifr lifr ceilings overnight and into Friday morning with areas of MVFR vsbys. Clearing expected by 17-18z Friday. Light winds. Fire weather As of 9:00 pm pdt Thursday... Although onshore flow has returned, the marine layer will remain shallow and the airmass aloft will remain very warm for a few more days. Thus, conditions in the hills will only gradually improve from Friday through the weekend. Much improved conditions are expected by early next week. Climate Here is a list of record high temperatures sf bay area Thursday location... ... ... ... ... ..Temp year kentfield... ... ... ... ... .102 1989 san rafael... ... ... ... ... .99 2006 napa... ... ... ... ... ... ... 105 1981 san francisco... ... ... ... .97 1989 sfo airport... ... ... ... ... 98 1989 oakland airport... ... ... ..94 1957 richmond... ... ... ... ... ... 94 1989 livermore... ... ... ... ... .110 1961 moffett field... ... ... ... .99 1989 san jose... ... ... ... ... ..101 1989 gilroy... ... ... ... ... ... .110 1973 monterey bay area Thursday location... ... ... ... .. Temp year salinas... ... ... ... ... ... .89 1981 salinas airport... ... ... ..92 1947 king city... ... ... ... ... .110 1929 Marine As of 8:50 pm pdt Thursday... A weak surface low offshore will maintain light southerly winds over the coastal waters through Friday. However, moderate and gusty seabreeze winds are expected during the afternoon and evening hours around the golden gate and angel island. Winds over the coastal waters will shift to the west and northwest on Saturday and then increase on Sunday. Seas will subside through the remainder of the week and into the weekend. Mtr watches warnings advisories Tngt Heat advisory... Caz510-511-517-518 sca... Sf bay until 11 pm public forecast: cw aviation: dykema marine: bam fire weather: rww visit us at |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapWind History for Alameda, CA
(wind in knots) EDIT (on/off) Help| 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 | 2 AM | 3 AM | |
| Last 24hr | N G4 | N | N | NW | N | N | W | NW | N | W G8 | NW | W | W G12 | W G10 | W G14 | NW G10 | NW | N G9 | N G8 | NE G7 | NW | N G8 | NW G6 | NW G5 |
| 1 day ago | W G9 | W G11 | W | E | SW | W | SW | SW | W | W G7 | W G7 | W G8 | W G6 | NW | N | W G8 | W | W | W G7 | W | W | N | N G7 | N |
| 2 days ago | W G11 | W G9 | W | W | W | W | W | W G10 | W G9 | W G11 | W G9 | W G10 | W G13 | W G15 | W G12 | W G15 | W G15 | W G17 | W G11 | W G14 | W G14 | SW G15 | W G9 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Oakland, Metro Oakland International Airport, CA | 6 mi | 22 min | NNW 7 | 10.00 mi | Partly Cloudy | 60°F | 57°F | 90% | 1010.2 hPa |
| Hayward, Hayward Air Terminal, CA | 11 mi | 21 min | NNW 4 | 10.00 mi | Fair | 61°F | 53°F | 75% | 1010.9 hPa |
| San Francisco, San Francisco International Airport, CA | 12 mi | 19 min | W 5 | 10.00 mi | A Few Clouds | 59°F | 54°F | 83% | 1010 hPa |
| San Carlos Airport, CA | 17 mi | 20 min | N 4 | 10.00 mi | Fair | 61°F | 57°F | 88% | 1010.5 hPa |
| Concord, Buchanan Field, CA | 17 mi | 22 min | WNW 6 | 10.00 mi | Fair | 66°F | 55°F | 68% | 1007.6 hPa |
| Livermore, Livermore Municipal Airport, CA | 23 mi | 22 min | WNW 5 | 10.00 mi | Fair | 68°F | 55°F | 65% | 1008.5 hPa |
Wind History from OAK (wind in knots)
| 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 | 2 AM | 3 AM | |
| Last 24hr | NW | NW | N | N | NW | NW | NW | W | NW | NW | NW | NW | NW | NW | NW | NW G20 | NW G19 | N | N | NW | NW | NW | N | N |
| 1 day ago | W | N | Calm | W | SW | W | W | W | NW | NW | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | Calm | ||
| 2 days ago | NW | NW | NW | NW | NW | NW | W | W | W | W | W | NW | NW | W | W | W | W | W | W | W | SW | NW | SW | W |
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 Data| Oakland Harbor Click for Map Fri -- 05:35 AM PDT Moonrise Fri -- 05:47 AM PDT Sunrise Fri -- 06:16 AM PDT -1.51 feet Low Tide Fri -- 01:20 PM PDT 5.52 feet High Tide Fri -- 06:00 PM PDT 2.19 feet Low Tide Fri -- 07:32 PM PDT New Moon Fri -- 08:14 PM PDT Moonset Fri -- 08:34 PM PDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 7.4 | 6.4 | 4.8 | 2.7 | 0.6 | -0.8 | -1.5 | -1.3 | -0.4 | 0.8 | 2.3 | 3.7 | 4.9 | 5.5 | 5.3 | 4.6 | 3.5 | 2.5 | 2.2 | 2.5 | 3.5 | 4.7 | 6 | 7.1 |
Tide / Current Tables for Oakland Harbor WebStreeter Street, San Francisco Bay, California Current
EDIT (on/off) Help One Week of Data| Oakland Harbor WebStreeter Street Click for Map Fri -- 02:25 AM PDT -1.79 knots Max Ebb Fri -- 05:35 AM PDT Moonrise Fri -- 05:47 AM PDT Sunrise Fri -- 06:15 AM PDT 0.01 knots Slack Fri -- 09:32 AM PDT 1.41 knots Max Flood Fri -- 12:50 PM PDT -0.00 knots Slack Fri -- 03:01 PM PDT -0.91 knots Max Ebb Fri -- 06:06 PM PDT 0.00 knots Slack Fri -- 07:32 PM PDT New Moon Fri -- 08:15 PM PDT Moonset Fri -- 08:34 PM PDT Sunset Fri -- 09:14 PM PDT 1.07 knots Max Flood Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| -0.6 | -1.3 | -1.7 | -1.7 | -1.4 | -0.9 | -0.2 | 0.5 | 1.1 | 1.4 | 1.4 | 1.1 | 0.6 | -0.1 | -0.7 | -0.9 | -0.8 | -0.5 | -0 | 0.4 | 0.9 | 1.1 | 1 | 0.6 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of CentralWestCoast EDIT  |
Wind Forecast for San Francisco/Monterey Bay Area, CA (6,6,7,8)
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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. |