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Marine Weather and Tides Richmond, CA Version 3.4

NOTICE 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

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Sunrise 6:25AM

Sunset 8:01PM

Saturday August 17, 2019 11:08 AM PDT (18:08 UTC)

Moonrise 8:32PM

Moonset 7:19AM

Illumination 95%

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.

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7 Day Forecast for Marine Location Near Richmond, CA

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Area Discussion for - San Francisco/Monterey Bay Area, CA

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Fxus66 kmtr 171748 afdmtr area forecast discussion national weather service san francisco bay area 1048 am pdt Sat aug 17 2019 Synopsis Cooler temperatures today and tomorrow are driven by a deeper marine layer and continued onshore flow. Conditions remain dry and seasonal to start the work week. A warming trend looks to begin midweek as high pressure starts to build in the desert southwest again. Discussion As of 08:30 am pdt Saturday... A deepening trough extending southwestward from its central low over saskatchewan continues to be the driving factor for the deepening marine layer over the bay area and the persistent onshore flow. The fort ord profiler currently lists a growing marine layer of over 2000 feet. The onshore flow will keep the cooling trend lingering today and tomorrow, providing relief even for inland locations from the heat experienced earlier this week. The trough's orientation also provides a very small chance at some light patchy drizzle overnight Saturday and into Sunday morning for areas along the santa cruz and big sur coasts. Sunday into Monday, the trough shifts from a positive tilt to a negative tilt, as lower pressure builds over the north pacific ocean. Despite the change in trough orientation, dam heights over the bay area will only increase slightly, giving confidence of consistent dry and seasonal conditions. However, high pressure looks to build again over texas, and deepening toward new mexico and arizona by midweek. A ridge associated with this high pressure midweek will likely provide the next warming trend for the bay area. Prev discussion As of 3:08 am pdt Saturday... A solid 2000 foot marine layer has returned to the coast with low clouds filling the valleys of the central coast. Onshore breezes induced by a 2.5 mb sfo to sac onshore gradient will continue to allow for more low cloud formation through sunrise inside sf bay and up into the north bay valleys. Upper low level pressure with a closed circulation at 700 mb will drop to just west of the golden gate later this afternoon. That should mean a slow burn off of the stratus back to the coast through midday. A general cooling trend continues, especially inland where locations that were around 100 could cool towards the low to mid 80s this afternoon. Closer to the bay trends should be 4-8 degrees cooler with highs generally in the 70s. The upper trough axis stays positioned right over san francisco tonight into Sunday. This should allow the marine layer to deepen to at least 2500 feet and possibly deeper. Not surprisingly the models portend a big push of stratus tonight into Sunday morning with low clouds likely pushing out into the delta and possibly bumping into the foothills. Given the deep marine layer, onshore gradients and cool air aloft expect a slow burn off of stratus inside sf bay Sunday with cool temperatures regionwide as the inland valleys struggle to reach the low 80s.

Sunday should be the coolest day followed by a modest warming trend early next week as high pressure slowly builds. However, the pattern looks stagnant early next week. The main player will then be another ridge building from the desert southwest that should induce another warming trend by the middle of next week. Models continue to augur some tropical activity west of baja by next weekend that allows a broad 595 dm ridge to build over the west coast and out into the pacific which suggests above normal temps in the extended. Aviation As of 10:45 am pdt Saturday...VFR conditions have returned across much of the bay area with lingering MVFR ifr ceilings holding on around the monterey bay terminals. Should see improving conditions region-wide as low clouds dissipate and scatter through the remainder of the morning. Onshore winds will increase a bit and become locally gusty this afternoon and evening. Latest thinking is that low clouds will make an early return late this evening as the marine layer continues to deepen. Timing of clearing on Sunday remains a bit more tricky as cold air advection arriving from the north should help to mix out the marine inversion. However, look for MVFR ifr ceilings to impact most terminals overnight tonight through early Sunday morning. Vicinity of ksfo...VFR. Onshore winds will increase and become locally gusty through the afternoon. Low clouds potentially make an early return late this evening and will likely linger into Sunday morning. Sfo bridge approach... Similar to ksfo. Monterey bay terminals... MVFR ifr conditions linger this morning given a decent onshore and a moist boundary layer. Should see these clouds scatter out by early afternoon giving way toVFR conditions. Modest onshore winds will also persist this afternoon and into the early evening hours. MVFR ifr conditions return late this evening and will likely persist into Sunday morning. Marine As of 4:41 am pdt Saturday... Moderate to gusty northwesterly winds will continue over the northern and outer waters into Sunday as high pressure remains over the eastern pacific. This high pressure will begin to weaken into Sunday before a strong low pressure center develops and approaches british columbia early next week. The persistent fetch produced by these systems will generate fresh short period swell that will propagate into the california coastal waters. This short period swell in combination with gusty winds will generate hazardous seas conditions, particularly for smaller vessels. Mtr watches warnings advisories Tday Sca... Pt arena to pigeon pt 10-60 nm sca... Pt arena to pt reyes 0-10 nm until 3 pm sca... Sf bay from 3 pm public forecast: dk rww aviation: rgass marine: canepa visit us at

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
PPXC1 - 9414847 - Richmond (Point Potrero), CA	1 mi	56 min	WSW 13 G 18	63°F			1011.1 hPa
RCMC1 - 9414863 - Richmond, CA	2 mi	50 min			66°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA	4 mi	45 min	W 1	63°F			1011 hPa (+1.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA	7 mi	50 min	NW 2.9 G 5.1	64°F			1011.1 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA	8 mi	50 min	N 5.1 G 7	64°F			1010.1 hPa
OBXC1	8 mi	50 min		64°F				59°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	8 mi	56 min	WSW 1 G 1.9
FTPC1 - 9414290 - San Francisco, CA	9 mi	56 min	SW 9.9 G 15	64°F	64°F		1011.3 hPa
AAMC1 - 9414750 - Alameda, CA	10 mi	56 min	ESE 2.9 G 5.1	65°F	70°F		1011.5 hPa
LNDC1	10 mi	50 min	SE 2.9 G 7	65°F			1011 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	12 mi	50 min	W 13 G 19	63°F			1010.4 hPa
UPBC1	16 mi	50 min	WNW 15 G 19
MZXC1 - 9415102 - Martinez-Amorco CA	16 mi	56 min	WNW 14 G 16	66°F	72°F		1010.1 hPa
46237 - San Francisco Bar, CA (142)	16 mi	38 min			59°F	5 ft
PCOC1 - 9415144 - Port Chicago, CA	21 mi	50 min	W 19 G 21	66°F	72°F		1010.1 hPa
SFXC1 - San Francisco Bay Reserve, CA	27 mi	83 min	W 15	67°F			1010 hPa	59°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	27 mi	28 min	S 7.8 G 12	56°F	58°F		1012.2 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	28 mi	56 min	WNW 14 G 19	71°F			1009.1 hPa
RTYC1 - 9414523 - Redwood City, CA	29 mi	50 min	NNE 5.1 G 7	66°F	76°F		1011.6 hPa
PRYC1 - 9415020 - Point Reyes, CA	32 mi	50 min			62°F		1011.5 hPa

Wind History for Point Potrero Richmond, CA

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Oakland, Metro Oakland International Airport, CA	17 mi	75 min	S 8	10.00 mi	A Few Clouds	68°F	55°F	65%	1011 hPa
Concord, Buchanan Field, CA	18 mi	75 min	SSW 10	10.00 mi	Fair	73°F	55°F	53%	1008.6 hPa
Novato / Gnoss Field, CA	19 mi	73 min	N 0	9.00 mi	Fair	68°F	55°F	64%	1010.8 hPa
San Francisco, San Francisco International Airport, CA	20 mi	72 min	ENE 6	10.00 mi	A Few Clouds	70°F	55°F	61%	1010.7 hPa
Napa, Napa County Airport, CA	21 mi	74 min	SW 12	6.00 mi	Partly Cloudy	67°F	57°F	71%	1009.8 hPa
Hayward, Hayward Air Terminal, CA	22 mi	74 min	Var 4	10.00 mi	A Few Clouds	67°F	55°F	66%	1011.9 hPa

Link to 5 minute data for KOAK

Wind History from OAK (wind in knots)

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Tide / Current Tables for Richmond Inner Harbor, San Francisco Bay, California

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Tide / Current Tables for Point Richmond .5 mi W, San Francisco Bay, California Current

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Weather Map and Satellite Images

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GOES 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

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Wind Forecast for San Francisco/Monterey Bay Area, CA (14,3,4,5)

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Ground Weather Radar Station Sacramento, 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.