Monday, December9, 2019
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Marine Weather and Tides
Richmond, CA

Version 3.4
NOTICE
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.
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 7:12AMSunset 4:51PM Monday December 9, 2019 5:42 PM PST (01:42 UTC) Moonrise 3:29PMMoonset 4:31AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 236 Pm Pst Mon Dec 9 2019
Tonight..SW winds up to 10 kt. Patchy fog.
Tue..E winds up to 10 kt. Patchy fog. A chance of rain.
Tue night..E winds up to 10 kt. A chance of rain.
Wed..NE winds 5 to 15 kt. A slight chance of rain.
Wed night..E winds up to 10 kt.
Thu..S winds 5 to 15 kt.
Thu night..SW winds around 5 kt.
Fri..W winds up to 10 kt.
Sat..W winds 5 to 15 kt. A chance of rain.
PZZ500 236 Pm Pst Mon Dec 9 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light winds are forecast to prevail over the coastal waters tonight and into Tuesday. Areas of fog will likely develop overnight and into Tuesday. A weak system will then move through the region early this week bringing a chance of showers Tuesday night into Wednesday while winds turn southerly. Moderate northwest swell will persist through much of the week before a larger and longer period northwest swell arrives late this week.


7 Day Forecast for Marine Location Near Richmond, CA
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location: 37.91, -122.38     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 092358 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 358 PM PST Mon Dec 9 2019

SYNOPSIS. Dry conditions with mild temperatures are forecast through Tuesday afternoon. Patchy dense fog is likely during the night and morning hours. A weak weather system may produce light rain from late Tuesday into early Wednesday. Dry conditions are then forecast for most of the second half of the work week before rain chances increase by Friday night or Saturday.

DISCUSSION. as of 12:55 PM PST Monday . Fog blanketed a good portion of the San Francisco Bay Area and parts of the central California coast this morning. Many airports throughout the region reported visibilities down to 1/4 mile or less. By mid-morning, the severity of the fog had gradually improved, allowing for the Dense Fog Advisory to expire as scheduled at 10 AM PST. With that said, though, as of mid-day overcast skies and locally-reduced visibilities are still being observed. Some locations may never clear this afternoon. With the high-amplitude upper level ridge over our area, will likely see a repeat overnight tonight and into Tuesday morning with fog impacting the area valleys and locations near sea level. Will monitor visibility trends closely and let the evening or night shift make the determination about any new Dense Fog Advisories.

The upper level ridge will quickly push eastward into the North American continent during the day on Tuesday. A fast-moving shortwave trough will then approach the California coast late Tuesday and into Wednesday. The precipitation associated with this shortwave will be light. Best potential for more than a few tenths of an inch of rain will be in the North Bay. The latest 3-km NAM brings around a tenth to a quarter of an inch to San Francisco and the East Bay with lesser amounts in the Santa Clara Valley. The timing of this rain looks to fall in the middle to late evening hours on Tuesday, wrapping up early to middle morning Wednesday. Some locations in Monterey and San Benito County will likely remain dry. Overall, low impacts are anticipated.

A broad, flat upper level ridge in the eastern Pacific between 20 and 30 degrees north latitude will largely push the core storm track to our north from the middle of the week onward. Models advertise a strong system to impact the Pacific Northwest and British Columbia late Wednesday and into Thursday. The North Bay will be on the far southern end of this system with the potential for light rain on Thursday or Friday. Little rainfall (if any) is expected south of the Golden Gate based on the latest guidance. Again, little or no weather-related impacts anticipated in our area.

And behind the late week system comes another shortwave trough over the weekend. Models have backed off a bit over the past several model runs in terms of rainfall totals, indicating a few or several tenths of an inch of rain. If the forecast plans out, little or no weather-related impacts are expected this this system as well.

Looking ahead to late this weekend and into early next week, both the GFS and ECMWF bring a ridge back to the West Coast. While this week from a synoptic meteorological aspect is rather active, the overall rain impacts from the series of successive systems will likely remain low for the San Francisco Bay Area.

AVIATION. as of 3:58 PM PST Monday . For 00z TAFs. Stratus clouds have already moved into coastal parts of the North Bay and coastal San Francisco while they currently are still out to sea near Monterey Bay. Expect mid level clouds through the evening with reductions to vis and cigs tonight and into the early part of tomorrow morning. Fog is forecast for many terminals around the Bay Area with impacts to vis providing IFR and even LIFR conditions possible. Winds remain generally light. Clouds should scatter out by midday on Tuesday.

Vicinity of KSFO . VFR to MVFR conditions at 00z with stratus clouds currently looming at mid-levels with light winds. Those light winds will prevail through the night. However, vis and low cigs are of concern in the early morning hours. Fog is not in the KSFO TAF currently given the lack of fog at the terminal yesterday morning, despite many other Bay Area terminals experiencing it. By about 20z, clouds should scatter out and allow for VFR conditions once again with light winds. Chances of rain are in the forecast for Tuesday night.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Mostly VFR conditions around 00z for the MRY Bay terminals. But low clouds are expected to return this evening. Winds will swing around to the southeast and remain light. Cigs and vis reduce through the night with fog expected to impact terminals in the early morning hours. Most clouds should scatter out by 20z and winds remain out of the south-southeast.

MARINE. as of 03:45 PM PST Monday . Light winds are forecast to prevail over the coastal waters tonight and into Tuesday. Areas of fog will likely develop overnight and into Tuesday. A weak system will then move through the region early this week bringing a chance of showers Tuesday night into Wednesday while winds turn southerly. Moderate northwest swell will persist through much of the week before a larger and longer period northwest swell arrives late this week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. None.

PUBLIC FORECAST: Rowe AVIATION: DK MARINE: CW/AS

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIBC1 - Tiburon Pier, San Francisco Bay, CA 4 mi62 min SSW 4.1 54°F 1022 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 7 mi205 min NNW 1.9 G 1.9
PXOC1 - 9414311 - San Francisco (Pier 1), CA 8 mi205 min 54°F 1020.7 hPa
LNDC1 10 mi205 min 54°F
46237 - San Francisco Bar, CA (142) 16 mi73 min 54°F4 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 27 mi43 min W 5.8 G 7.8 55°F 56°F1023.1 hPa (+0.6)
SFXC1 - San Francisco Bay Reserve, CA 27 mi118 min WNW 8 55°F 1022 hPa50°F
RTYC1 - 9414523 - Redwood City, CA 29 mi205 min NNW 4.1 G 6
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 47 mi43 min NNW 5.8 G 9.7 55°F 57°F1022.9 hPa49°F

Wind History for Point Potrero Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA17 mi50 minNW 610.00 miMostly Cloudy55°F48°F77%1022.3 hPa
Concord, Buchanan Field, CA18 mi50 minN 010.00 miOvercast55°F48°F77%1020.5 hPa
Novato / Gnoss Field, CA19 mi68 minNNW 410.00 miOvercast55°F53°F94%1022.3 hPa
San Francisco, San Francisco International Airport, CA20 mi1.8 hrsNNW 49.00 miMostly Cloudy55°F48°F80%1021.7 hPa
Napa, Napa County Airport, CA21 mi49 minNNW 610.00 miOvercast53°F50°F89%1021.3 hPa
Hayward, Hayward Air Terminal, CA22 mi49 minWNW 510.00 miFair53°F46°F80%1023 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)
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Last 24hrNW7NW5CalmCalmCalmE3CalmNE3CalmSE3E3NE4E3E3CalmNE3E4SE4S4S3W3W5NW8NW6
1 day agoS14S8S9S12SW10S13SW6CalmSW7S9S5CalmSW3W5CalmW3W53W4W5W6NW7NW6NW6
2 days agoSE16
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Tide / Current Tables for Richmond Inner Harbor, San Francisco Bay, California
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Richmond Inner Harbor
Click for Map
Mon -- 03:18 AM PST     2.11 feet Low Tide
Mon -- 04:31 AM PST     Moonset
Mon -- 07:13 AM PST     Sunrise
Mon -- 09:28 AM PST     6.19 feet High Tide
Mon -- 03:28 PM PST     Moonrise
Mon -- 04:26 PM PST     0.03 feet Low Tide
Mon -- 04:50 PM PST     Sunset
Mon -- 11:06 PM PST     4.55 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.83.12.52.12.22.83.74.75.66.16.15.54.431.70.60.10.10.71.52.53.54.24.6

Tide / Current Tables for Point Richmond .5 mi W, San Francisco Bay, California Current
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Point Richmond .5 mi W
Click for Map
Mon -- 01:40 AM PST     -0.70 knots Max Ebb
Mon -- 04:31 AM PST     Moonset
Mon -- 04:40 AM PST     0.00 knots Slack
Mon -- 07:13 AM PST     Sunrise
Mon -- 08:07 AM PST     0.80 knots Max Flood
Mon -- 11:06 AM PST     -0.00 knots Slack
Mon -- 02:00 PM PST     -1.28 knots Max Ebb
Mon -- 03:28 PM PST     Moonrise
Mon -- 04:50 PM PST     Sunset
Mon -- 05:37 PM PST     0.01 knots Slack
Mon -- 09:09 PM PST     0.96 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.6-0.7-0.5-0.30.10.40.70.80.70.50.1-0.5-1.1-1.3-1.1-0.8-0.40.20.60.910.90.6

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 (20,4,5,8)
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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 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.