Wednesday, April8, 2020
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Marine Weather and Tides
Berkeley, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:41AMSunset 7:40PM Wednesday April 8, 2020 5:25 AM PDT (12:25 UTC) Moonrise 7:43PMMoonset 6:25AM Illumination 100% Phase: Full Moon; Moon at 15 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 237 Am Pdt Wed Apr 8 2020
Today..SW winds 5 to 15 kt.
Tonight..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu..S winds up to 10 kt.
Thu night..W winds 5 to 10 kt.
Fri..W winds 5 to 15 kt with gusts up to 25 kt.
Fri night..W winds 5 to 15 kt.
Sat..SW winds up to 10 kt.
Sun..NW winds up to 10 kt.
PZZ500 237 Am Pdt Wed Apr 8 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... The low pressure system continues to slowly move over southern california and farther inland. Northwest winds will remain breezy through the morning and then decrease. Lightly scattered showers over the southern waters are possible. Northwest swell through the week, with a long period southerly swell that gradually decreases.


7 Day Forecast for Marine Location Near Berkeley, CA
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location: 37.86, -122.33     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 081148 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 448 AM PDT Wed Apr 8 2020

SYNOPSIS. Isolated to scattered rain showers will be possible over the Central Coast through midweek while mainly dry conditions prevail to the north. Temperatures will begin a gradual warming trend late in the week and into the upcoming weekend as conditions dry out region-wide.

DISCUSSION. as of 2:55 AM PDT Wednesday . The pesky low pressure system that brought a variety of weather to the Bay Area and Central Coast the last few days remains off the coast. Overnight satellite imagery shows a broad circulation, with embedded smaller circulations, spinning near the Channel Islands. The cyclonic flow continues to advect moisture around the slow moving low pressure. The advecting moisture has resulted in bands of scattered showers moving over the San Joaquin Valley and southern Monterey/San Benito. Over the last six hours a few gauges have tipped in southern Monterey/San Benito with a few hundredths up to a few tenths. It should be noted shower activity is struggling to have any additional northern movement. Latest hi-res models, like the HRRR and local WRF, keep showers chances through day, but mainly south of San Jose. In fact, most likely locations for showers will still be confined to Monterey/San Benito, but a stray shower could drift north. The cold low pressure will make for an interesting split with temperatures around the Bay Area/Central Coast. Southern areas will remain seasonably cool with filtered sunshine/showers (Monterey Bay region southward) and northern areas will be mild an in a few spots above normal (San Jose northward).

For tonight, the low finally moves eastward and begins its slow exit of California. Before it finally exits a few additional bands of showers may drift across the forecast area Wednesday night and Thursday. Once again, best chance for precip will be south of San Jose. Additional rainfall will generally be light. Given the recent rain and lingering low level moisture patchy fog will be possible Wednesday night and early Thursday.

Showers will end by Thursday night with a warming and drying trend developing. Warmer and drier conditions are expect over the weekend and into early next week.

AVIATION. as of 4:46 AM PDT Wednesday . for 12Z TAFs. A thick layer of stratus sits just off the coastline over the ocean, while higher clouds spill over head associated to the weather system over Southern California, tracking southeast. MVFR to VFR at this hour. Locally varying winds will transition back to onshore and strengthen in the afternoon as cloud cover lingers providing MVFR conditions possible through the TAF period.

Vicinity of KSFO . MVFR at KSFO and KOAK due to stratus clouds spilling into the Bay, with VFR elsewhere. Cigs are forecast to lift to around 3,000 feet in the afternoon. Lower clouds for MVFR conditions return in the evening for the remainder of the TAF period. Winds are breezy and will re-strengthen and be onshore in the afternoon.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Closer to the coast, winds are breezy with cigs around 1,500 feet and MVFR conditions. Farther inland and winds are calmer with VFR. Winds will become onshore and strengthen in the afternoon with cigs only lifting to around 2,500 feet. Isolated showers are possible in the evening.

MARINE. as of 02:37 AM PDT Wednesday . The low pressure system continues to slowly move over southern California and farther inland. Northwest winds will remain breezy through the morning and then decrease. Lightly scattered showers over the southern waters are possible. Northwest swell through the week, with a long period southerly swell that gradually decreases.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 PM SCA . Pt Arena to Pt Reyes 0-10 nm until 9 AM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 9 AM



PUBLIC FORECAST: MM AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OKXC1 - 9414776 - Oakland (Berth 34), CA 3 mi55 min SSW 8 G 13 52°F 1014.8 hPa
OBXC1 4 mi55 min 53°F 51°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 4 mi55 min SSW 9.9 G 13
PPXC1 - 9414847 - Richmond (Point Potrero), CA 4 mi55 min S 15 G 17 53°F 1014.7 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 5 mi55 min SE 7 G 11 52°F 1013.7 hPa
LNDC1 5 mi55 min S 7 G 8.9 53°F 1014.7 hPa
PXSC1 5 mi55 min 53°F 51°F
AAMC1 - 9414750 - Alameda, CA 6 mi55 min S 8 G 11 53°F 58°F1014.8 hPa
RCMC1 - 9414863 - Richmond, CA 6 mi55 min SSE 13 G 15 52°F 56°F1014 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 7 mi45 min S 8.9 50°F 1014 hPa
FTPC1 - 9414290 - San Francisco, CA 8 mi55 min 58°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 14 mi55 min SSW 6 G 8 52°F 1013.8 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 16 mi55 min S 4.1 G 8.9 51°F 58°F1014.1 hPa
UPBC1 17 mi55 min SSW 8.9 G 12
46237 - San Francisco Bar, CA (142) 17 mi55 min 55°F5 ft
PCOC1 - 9415144 - Port Chicago, CA 21 mi55 min S 11 G 14 51°F 58°F1013.5 hPa
RTYC1 - 9414523 - Redwood City, CA 25 mi55 min WSW 4.1 G 4.1 51°F 59°F1015.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 27 mi55 min SSW 1.9 G 5.1 55°F 1013.3 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 28 mi35 min WNW 12 G 14 51°F 52°F7 ft1015.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi100 min SW 6
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 45 mi35 min NW 7.8 G 14 51°F 53°F7 ft1016 hPa48°F

Wind History for Oakland Middle Harbor, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA12 mi32 minSSW 1110.00 miOvercast54°F46°F77%1014.7 hPa
Concord, Buchanan Field, CA17 mi32 minS 10 G 2010.00 miFair51°F45°F80%1012.7 hPa
San Francisco, San Francisco International Airport, CA17 mi29 minWSW 510.00 miMostly Cloudy53°F46°F77%1014.7 hPa
Hayward, Hayward Air Terminal, CA18 mi31 minN 310.00 miFair52°F46°F83%1015.4 hPa
San Carlos Airport, CA23 mi30 minWNW 810.00 miA Few Clouds52°F46°F82%1014.9 hPa
Novato / Gnoss Field, CA23 mi50 minN 010.00 miFair43°F42°F100%1014.2 hPa
Napa, Napa County Airport, CA24 mi31 minN 010.00 miFair45°F43°F93%1013.4 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hrCalmCalmN4SE3CalmSW5W6W8W10W12NW10W16NW13W13NW12NW8N6NW5W6W3W7W9S12SW11
1 day agoNE4E4E3CalmCalmCalmN3N5S10S9SW7CalmNW5NW4NW4CalmCalmCalmE5E4E5NE4E4SE3
2 days agoSE18
G22
SE14SE12S19SW16S10W10W16W10W9W8W7W9W9W8W8NW5NW7N4NE3E3NE4E3NE4

Tide / Current Tables for Berkeley, San Francisco Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Berkeley Yacht Harbor, California Current
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Berkeley Yacht Harbor
Click for Map
Wed -- 01:20 AM PDT     -0.00 knots Slack
Wed -- 03:57 AM PDT     -0.34 knots Max Ebb
Wed -- 06:43 AM PDT     Sunrise
Wed -- 07:06 AM PDT     0.00 knots Slack
Wed -- 07:24 AM PDT     Moonset
Wed -- 10:26 AM PDT     0.43 knots Max Flood
Wed -- 02:00 PM PDT     -0.00 knots Slack
Wed -- 04:23 PM PDT     -0.28 knots Max Ebb
Wed -- 07:22 PM PDT     0.00 knots Slack
Wed -- 07:39 PM PDT     Sunset
Wed -- 08:42 PM PDT     Moonrise
Wed -- 10:38 PM PDT     0.38 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.1-0.1-0.3-0.3-0.3-0.2-00.20.30.40.40.30.20-0.2-0.3-0.3-0.2-0.10.10.30.40.4

Weather Map
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wmap_P
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 (8,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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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 numerous 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.