Friday, December4, 2020
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L-36.com

Marine Weather and Tides
Albany, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:08AMSunset 4:51PM Friday December 4, 2020 4:19 PM PST (00:19 UTC) Moonrise 8:48PMMoonset 10:55AM Illumination 76% Phase: Waning Gibbous; Moon at 20 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- 205 Pm Pst Fri Dec 4 2020
Today..NE winds up to 10 kt.
Tonight..N winds up to 10 kt.
Sat..E winds up to 10 kt.
Sat night..SW winds 5 to 10 kt.
Sun..W winds up to 10 kt.
Sun night..NW winds 5 to 15 kt.
Mon..NE winds 15 to 25 kt with gusts up to 30 kt.
Tue..NE winds around 5 kt.
PZZ500 205 Pm Pst Fri Dec 4 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light to moderate winds will continue through tonight while long period nw swell slowly subsides. An approaching front will cause the winds becoming southwest to westerly on Saturday before turning back from the north and increasing on Sunday. As winds ease and turn out of the ne Monday night into Tuesday, another long period large amplitude swell will move into the waters. This will cause large breaking waves across nearshore shoals.


7 Day Forecast for Marine Location Near Albany, CA
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location: 37.86, -122.37     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 050012 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 412 PM PST Fri Dec 4 2020

SYNOPSIS. Daytime temperatures cool slightly headed into the weekend as a weak cold front pushes into northern California. Offshore winds are then set to develop late Sunday into Monday with gusty conditions in the region's higher elevations. Otherwise, mild afternoons and cool nights are expected through next week with ongoing dry weather conditions.

DISCUSSION. as of 01:25 PM PST Friday . Temperatures this afternoon range from the upper 50s near the coast/bays to mid 60s across the interior under clear sky conditions. These temperatures are generally a few degrees warmer compared to this time yesterday as high pressure aloft continues to dominate our weather pattern. With little change overnight, look for temperatures again to generally fall into the mid/upper 30s across the interior to 40s elsewhere.

A mid/upper level trough will then push into the Pacific Northwest late Saturday driving a frontal boundary into northern California. Cloud cover will increase ahead of this frontal boundary and result in slightly cooler afternoon temperatures, especially for the northern portion of the region. The latest short-range guidance indicates the potential for light rain to reach coastal Sonoma County Saturday afternoon and evening along the tail end of the frontal boundary. While coastal drizzle may also be possible with this passing system, region-wide measurable precipitation is unlikely. At best, a few hundredths of an inch of rainfall will be possible, especially along coastal Sonoma County.

Cloud cover will begin to clear out during the afternoon on Sunday as a cut-off low develops from the aforementioned mid/upper level trough and tracks southward into Nevada. This will result in a tightening pressure gradient allowing for offshore flow to develop over the region late Sunday night into Monday. North to northeast winds will be strongest in the region's hills, ridges and peaks early Monday morning before weakening slightly Monday afternoon. Wind gusts of 35 to 45 mph will be likely with the gusts in excess of 50 mph possible in the highest peaks (Mt. Saint Helena & Mt. Diablo). At this time, the lowest humidity doesn't look to advect into the region until during the day Monday as winds begin to relax. That said, elevated to near critical fire weather conditions are still possible from late Sunday into Monday in the region's higher elevations as fuels across the region are nearing record dryness. Thus, these conditions will be closely monitored in the coming days.

As the ridge builds inland to our north, winds will diminish and temperatures will be on a warming trend Monday into Tuesday with widespread 60s to low/mid 70s possible through midweek. The warmest areas look to be across the interior portions of the Central Coast on Tuesday where a few spots may even reach into the upper 70s. This too will likely result in cooler overnight temperatures as well late next week. Temperatures do trend slightly cooler late in the week as troughing returns to the West Coast, yet dry weather conditions look likely to persist.

AVIATION. as of 4:12 AM PST Friday . For the 00z TAFs. Predominantly VFR across the Bay Area and Monterey Bay regions, aside from isolated areas of haze. Satellite imagery shows thin clouds well offshore, which should not impact terminals. Mostly clear conditions expected overnight with a dry airmass in place, though patchy fog will be possible in coastal valleys, primarily in Sonoma Co. A frontal boundary approaches Saturday afternoon bringing high clouds, but little to no precip, so VFR conditions will prevail.

Vicinity of KSFO . VFR with clear skies and light winds through the evening and overnight hours. High clouds move in Saturday afternoon, but remaining VFR.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR with clear skies. Light to calm winds but a bit breezier WNW in the Salinas Valley, becoming SE overnight. VFR continues tomorrow with high clouds for the afternoon.

BEACHES. as of 4:00 AM Friday . A long period WNW swell will continue to impact our coast from Sonoma through Monterey Counties today. Expect moderate to locally large breaking waves generally 14 to 18 feet with isolated peak locations potentially reaching 20 feet. With wave periods still in the 17 to 18 second range, a risk of sneaker waves remains. The largest and most energetic sneaker waves will arrive irregularly, from every few minutes to as infrequently as once every 30 minutes during otherwise deceptively calmer seas. These consequently may catch those on coastal jetties, rocks, piers, or shorelines offguard and may injure them or knock them into the cold, turbulent ocean. Beachcombing is not advised during this timeframe. In addition, strong rip currents will accompany the energetic wave train, particularly at WNW facing beaches. These types of events claim lives each year along our coast so extreme vigilance is advised if visiting the coast. A beach hazard statement remains in effect through 3 PM today.

MARINE. as of 02:05 PM PST Friday . Light to moderate winds will continue through tonight while long period NW swell slowly subsides. An approaching front will cause the winds becoming southwest to westerly on Saturday before turning back from the north and increasing on Sunday. As winds ease and turn out of the NE Monday night into Tuesday, another long period large amplitude swell will move into the waters. This will cause large breaking waves across nearshore shoals.

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



PUBLIC FORECAST: RGass AVIATION: Lorber/DK MARINE: BFG

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPXC1 - 9414847 - Richmond (Point Potrero), CA 3 mi49 min W 5.1 G 6 63°F 1022.6 hPa
OBXC1 4 mi49 min 60°F 41°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 4 mi49 min NNW 1.9 G 2.9 59°F 1021.3 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi49 min NW 1.9 G 2.9 57°F 1022.3 hPa
PXSC1 4 mi49 min 60°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 5 mi49 min NW 1 G 1.9
TIBC1 - Tiburon Pier, San Francisco Bay, CA 5 mi32 min W 1.9 61°F 1022 hPa
RCMC1 - 9414863 - Richmond, CA 5 mi49 min NW 6 G 7 60°F 55°F1022.1 hPa
FTPC1 - 9414290 - San Francisco, CA 6 mi49 min SSW 1 G 1.9 61°F 55°F1022.5 hPa
AAMC1 - 9414750 - Alameda, CA 7 mi49 min W 2.9 G 2.9 62°F 55°F1022.4 hPa
LNDC1 7 mi49 min WSW 4.1 G 4.1 62°F 1022.2 hPa
46237 - San Francisco Bar, CA (142) 15 mi49 min 53°F8 ft
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 15 mi49 min ENE 6 G 8.9 62°F 1021.9 hPa
UPBC1 18 mi49 min E 5.1 G 7
MZXC1 - 9415102 - Martinez-Amorco CA 18 mi49 min ENE 2.9 G 5.1 64°F 55°F1022.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 22 mi49 min ENE 6 G 7 64°F 55°F1021.9 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 26 mi29 min NW 5.8 G 7.8 53°F9 ft1022.7 hPa
RTYC1 - 9414523 - Redwood City, CA 26 mi49 min N 2.9 G 4.1 61°F 56°F1022.7 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi49 min SE 4.1 G 5.1 64°F 1022 hPa
SFXC1 - San Francisco Bay Reserve, CA 30 mi94 min E 4.1
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi29 min NNW 7.8 G 12 55°F 9 ft1022.5 hPa50°F

Wind History for Point Potrero Richmond, 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, CA14 mi26 minWNW 49.00 miFair64°F36°F35%1022.3 hPa
San Francisco, San Francisco International Airport, CA17 mi23 minNNE 310.00 miFair60°F50°F70%1022 hPa
Concord, Buchanan Field, CA19 mi26 minN 310.00 miFair68°F30°F24%1020.7 hPa
Hayward, Hayward Air Terminal, CA19 mi25 minW 59.00 miFair65°F34°F32%1023 hPa
Novato / Gnoss Field, CA22 mi24 minSSW 410.00 miFair64°F33°F32%1022.3 hPa
San Carlos Airport, CA24 mi32 minNNE 57.00 miClear59°F50°F72%1022.3 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hrNW5NW6NW6NW3CalmE3SE3CalmN3NE3E3CalmNE3CalmCalmNE3CalmS3SW4SW3W3W4NW4W4
1 day agoNW6NW6CalmNW5W3E5S4E4SE4N3NE3CalmCalmCalmCalmE4SE6S4SW5W7NW7NW5W5W4
2 days agoNW5W6CalmN3N3CalmCalmNE3CalmNE3NE3CalmNE3CalmCalmCalmCalmSW3W6SW5SW5W7NW8NW7

Tide / Current Tables for Yerba Buena Island, San Francisco Bay, California
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Yerba Buena Island
Click for Map
Fri -- 03:36 AM PST     4.85 feet High Tide
Fri -- 07:09 AM PST     Sunrise
Fri -- 07:53 AM PST     3.43 feet Low Tide
Fri -- 10:55 AM PST     Moonset
Fri -- 01:34 PM PST     5.92 feet High Tide
Fri -- 04:50 PM PST     Sunset
Fri -- 08:43 PM PST     -0.44 feet Low Tide
Fri -- 08:47 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.53.54.34.84.84.543.63.43.64.14.85.45.85.95.44.53.11.70.4-0.3-0.4-00.8

Tide / Current Tables for Fleming Point 1.7 mi SW, San Francisco Bay, California Current
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Fleming Point 1.7 mi SW
Click for Map
Fri -- 03:49 AM PST     -0.01 knots Slack
Fri -- 05:28 AM PST     -0.18 knots Max Ebb
Fri -- 07:09 AM PST     Sunrise
Fri -- 07:54 AM PST     0.00 knots Slack
Fri -- 10:55 AM PST     Moonset
Fri -- 11:24 AM PST     0.35 knots Max Flood
Fri -- 02:07 PM PST     -0.00 knots Slack
Fri -- 04:50 PM PST     Sunset
Fri -- 05:33 PM PST     -0.43 knots Max Ebb
Fri -- 08:47 PM PST     Moonrise
Fri -- 08:54 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.40.2-0-0.2-0.2-0.100.10.30.30.30.20-0.1-0.3-0.4-0.4-0.3-0.100.30.5

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
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.