Monday, July6, 2020
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Marine Weather and Tides
Emeryville, 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 5:52AMSunset 8:35PM Monday July 6, 2020 3:32 PM PDT (22:32 UTC) Moonrise 9:12PMMoonset 6:14AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 220 Pm Pdt Mon Jul 6 2020
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..SW winds 10 to 20 kt with frequent gusts up to 25 kt, diminishing to 5 to 15 kt after midnight.
Tue..SW winds 5 to 15 kt.
Tue night..SW winds 5 to 15 kt.
Wed..SW winds 5 to 15 kt with gusts up to 25 kt.
Wed night..SW winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
Thu night..W winds 5 to 10 kt.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt.
Sat..SW winds 5 to 15 kt.
PZZ500 220 Pm Pdt Mon Jul 6 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... An upper level trough approaching the pacific northwest and surface high pressure well offshore will produce strong and gusty northwest winds across the coastal waters through tonight. Gale force gusts are possible along the northern near shore waters and off of the big sur coast. These strong northwest winds will also generate steep fresh swell and hazardous seas conditions. Winds will diminish later in the week.


7 Day Forecast for Marine Location Near Emeryville, CA
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location: 37.85, -122.29     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 062031 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 131 PM PDT Mon Jul 6 2020

SYNOPSIS. Slightly cooler temperatures will continue into tomorrow as an upper trough moves through the region. This will likely result in the deepening of the marine layer for the immediate coastline. Temperatures are expected to be similar through midweek before warming late in the week and into next weekend as high pressure builds over the region.

DISCUSSION. as of 01:31 PM PDT Monday . Mostly clear skies this afternoon across the Bay Area and Central Coast as the marine layer deepens ahead of an approaching upper trough. As a result, temperatures this afternoon are about 5 or so degrees cooler than yesterday with most locations along the coast in the 60s and 70s to mid 70s/80s across the interior. Expect a few degrees of additional warming this afternoon with highs along the coast in the 60s to low 70s to 70s/80s inland. Isolated interior locations will reach the low 90s. Breezy onshore winds continue this afternoon, particularly along the coast and in the hills where gusts of around 30-40 mph are still being observed. Gusty winds will persist the rest of the afternoon and this evening before easing overnight.

Cooler weather will continue for tomorrow as the upper trough moves through. Temperatures are forecast to be fairly similar to today with some breezy afternoon and evening winds returning, though not to the extent of today. The combination of the upper trough and northwest flow over the waters will likely result in the deepening of the marine layer along the coast and locally inland overnight. More widespread coastal stratus is expected tomorrow night and into Wednesday morning.

The upper trough will have moved off to the east by mid-week. The combination of building high pressure over the Desert Southwest and an approaching upper trough into British Columbia and the Pacific Northwest will result in more zonal flow across California. Later in the week, high pressure looks to build further over the Desert Southwest exerting more influence over the region. This will result in a more compressed marine layer and warming temperatures, particularly inland. Current forecast has not changed much from last night with a wide temperature spread across the area late this week and into the weekend. Coastal areas will likely remain in the upper 60s to mid 70s while the warmest spots across the interior rise into the mid 90s to about 100 degrees F.

AVIATION. as of 10:50 AM PDT Sunday . A dry air mass above the inversion layer has mixed into the lower levels allowing the stratus to dissipate across the region giving way to VFR conditions. Onshore winds will once again increase through the afternoon and remain gusty into the early evening before diminishing slightly overnight. The development of MVFR/IFR ceilings will impact the Monterey Bay terminals late this evening before spreading inland early Tuesday morning as the marine layer deepens, yet not all Bay Area terminals will be impacted.

Vicinity of KSFO . VFR. West winds will gradually increase through the afternoon with gusts in excess of 30 kt beyond 21Z. Winds diminish slightly late in the night with the potential for stratus development early Tuesday morning. However, confidence remains low with respect to the development of MVFR/IFR ceilings.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR. Breezy onshore winds will persist through the afternoon before diminishing late this evening. MVFR/IFR ceilings likely to develop between 03-06Z Tuesday as the marine layer deepens and onshore flow persists.

MARINE. as of 08:50 AM PDT Monday . An upper level trough approaching the Pacific Northwest and surface high pressure well offshore will produce strong and gusty northwest winds across the coastal waters through tonight. Gale force gusts are possible along the northern near shore waters and off of the Big Sur coast. These strong northwest winds will also generate steep fresh swell and hazardous seas conditions. Winds will diminish later in the week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm GLW . Pt Pinos to Pt Piedras Blancas 0-10 nm until 3 AM GLW . Pt Arena to Pt Reyes 0-10 nm until 9 PM SCA . SF Bay until 9 PM SCA . Mry Bay until 9 PM



PUBLIC FORECAST: AS AVIATION: RGass MARINE: RGass

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LNDC1 4 mi44 min WSW 13 G 16 66°F 1014.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 4 mi44 min SW 7 G 12
OBXC1 4 mi44 min 66°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi44 min W 7 G 8.9 67°F 1014.5 hPa
AAMC1 - 9414750 - Alameda, CA 5 mi44 min 70°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 6 mi44 min SSE 15 G 18 65°F 1014.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 7 mi44 min WSW 19 G 23 64°F 1013.5 hPa
PXSC1 7 mi44 min 66°F 51°F
RCMC1 - 9414863 - Richmond, CA 8 mi44 min 66°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 9 mi40 min Calm 68°F 1014 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 10 mi44 min 64°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 14 mi44 min WSW 14 G 18 73°F 1012.9 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 15 mi44 min W 15 G 18 77°F 69°F1012.6 hPa
UPBC1 16 mi44 min W 17 G 21
PCOC1 - 9415144 - Port Chicago, CA 19 mi44 min W 19 G 23 77°F 72°F1012.2 hPa
46237 - San Francisco Bar, CA (142) 19 mi62 min 59°F6 ft
RTYC1 - 9414523 - Redwood City, CA 24 mi44 min W 17 G 23 67°F 75°F1016 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi44 min WNW 13 G 17 83°F 1011.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi107 min W 14
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi32 min NW 19 G 25 56°F 54°F1016.3 hPa (+0.3)51°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 46 mi32 min NW 19 G 23 56°F 1017.2 hPa52°F

Wind History for Oakland Middle Harbor, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA11 mi39 minW 1610.00 miFair71°F52°F51%1015.2 hPa
Concord, Buchanan Field, CA16 mi39 minS 15 G 2010.00 miFair84°F48°F30%1011.2 hPa
Hayward, Hayward Air Terminal, CA16 mi38 minW 1310.00 miFair69°F50°F51%1016.4 hPa
San Francisco, San Francisco International Airport, CA16 mi36 minW 30 G 3510.00 miA Few Clouds and Windy67°F48°F51%1015.4 hPa
San Carlos Airport, CA22 mi1.8 hrsWSW 14 G 2110.00 miClear72°F48°F44%1015.6 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hrW11W17W16W13W15W14W113W7SW64CalmW6S8S6W11S54SW4W9W15W14W17W16
1 day agoW15W11W12W13W12W14W9NW6W6NW5NW7NW4W8W9NW4NE5CalmCalm5W6W9W11W13W12
2 days agoNW14NW12NW13W10W7W9NW6W9NW6N3N5NE3NE3NE3N4NE3CalmCalmW6W6W6NW8NW8NW11

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
Mon -- 01:31 AM PDT     -0.00 knots Slack
Mon -- 04:30 AM PDT     -0.36 knots Max Ebb
Mon -- 05:53 AM PDT     Sunrise
Mon -- 07:14 AM PDT     Moonset
Mon -- 08:06 AM PDT     0.00 knots Slack
Mon -- 11:34 AM PDT     0.40 knots Max Flood
Mon -- 03:23 PM PDT     -0.00 knots Slack
Mon -- 05:10 PM PDT     -0.12 knots Max Ebb
Mon -- 07:40 PM PDT     0.00 knots Slack
Mon -- 08:34 PM PDT     Sunset
Mon -- 10:12 PM PDT     Moonrise
Mon -- 11:04 PM PDT     0.29 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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 (18,4,5,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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weather_mapweather_map weather_map

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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.