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Marine Weather and Tides Oakland, CA Version 3.4

What's New / NOTES 10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

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Sunrise 6:47AM

Sunset 5:57PM

Saturday February 23, 2019 4:42 PM PST (00:42 UTC)

Moonrise 10:56PM

Moonset 9:36AM

Illumination 79%

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 Oakland, CA

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

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Fxus66 kmtr 240023 afdmtr area forecast discussion national weather service san francisco bay area 423 pm pst Sat feb 23 2019 Synopsis Dry and seasonably cool conditions will prevail across most of the region through the remainder of this weekend. The exception may be the north bay where there is a chance of light rain late tonight and on Sunday. A plume of moisture will bring periods of moderate to heavy rain to the majority of the region for the first half of next week, though the exact positioning of the heaviest rains continues to vary. Another potentially wet system may bring more rain to the region late next week and into the following weekend. Discussion As of 2:00 pm pst Saturday... Water vapor imagery continues to show northwesterly flow aloft prevailing across california this afternoon. There is plenty of moisture streaming through this flow in the form of high clouds ahead of the next system. As a result, skies are mostly cloudy this afternoon, with temperatures running similar to this time yesterday. Temperatures will still be cool tonight, but not quite as cold as things start to moderate with the high clouds in place. The upper level ridge of the pacific will keep restrict how quickly the next pacific storm digs south over the next 24 to 36 hours. As a result, the front will stall tonight and during the day on Sunday, focusing the main moisture plume along the oregon and california border and the far northern california coast. Current composite radar is already showing some light showers mainly from CAPE mendocino northward. This trend will likely continue tonight and into Sunday, with the heaviest rain developing and remaining well to our north. That being said, a few light rain showers sag south of point area later tonight or during the day on Sunday. Monday through Wednesday is the time period to watch for us, as things will likely start to get interesting for the central coast sometime Monday afternoon or evening. At this time, the 12z GFS is still the fastest with moving the rain into and south of the bay area proper during the Monday morning commute. Meanwhile, the 12z nam, ecmwf, and canadian hold off rain any rain until at least the midafternoon and more likely the evening commute. That being said, our north bay counties and mountains will likely see periods of moderate to heavy rain develop during the day on Monday and continue through Wednesday. The models are still disagreeing with where the heaviest rainfall will occur. Most are focusing on areas north of the golden gate bridge up to the mendocino coast. However, the GFS shows the north bay and bay area getting hit rather harder. This is leading to low confidence in the exact placement of the heaviest rainfall. However, believe the north bay will likely see quite a bit of rainfall regardless. For now, it is not out of the question that 3 to 5 inches of rain with locally amounts upward of 7 inches will be possible, leading to flooding and more landslides or debris flows. The main take away though is a series of disturbances will move along the stalled front between Monday and Wednesday, bringing relatively persistent rains, with periods of moderate to heavy rain possible. Areas from santa cruz county northward will likely see a decent amount of rain, with the north bay seeing the most at

this time, if models continue to trend this way. These various disturbances will also bring periods of gusty winds. Therefore, expect rapid rises along area rivers, streams, and creeks to be possible the first part of the work week. Trees and powerlines will also likely fall, as the grounds remain saturated. Although some residual passing showers will be possible on Thursday and Friday, they will be our in between days, before another potentially more potent system takes aim at the region for the weekend. For now, this latter system looks like it could be wetter than the first as it has a better tap to the tropics. However, the models are moving it through the region much faster. Therefore, if comparing to the current system, they might actually have similar impacts. Regardless, this week of weather bears watching, and we encourage everyone to prepare early and stay weather aware. Palmer Aviation As of 4:23 pm pst Saturday...VFR, mid and high clouds continue to advance in over the CWA from the west. MVFR cloud ceilings are likely over the north bay Sunday morning as a nearly stationary east to west 850 mb elevated frontal boundary develops, 850 mb warm air advection could result in spotty briefly very light precip vicinity ksts per recent NAM hrrr output. A separate, nearly stationary 925 mb frontal boundary develops nearby the monterey bay terminals Sunday morning which may be the focus for MVFR ceilings possibly lowering to ifr; not advertised in the monterey bay 00z TAF cycle as of yet, but will look into it a bit more this evening and amend tafs as needed. Vicinity of ksfo...VFR, westerly wind 10 to 15 knots until 04z this evening, light wind tonight becoming SE Sunday morning. An onshore wind near 10 knots resumes later Sunday. Sfo bridge approach... Similar to sfo. Monterey bay terminals...VFR, w-nw winds near 10 knots diminishing and becoming light SE wind by mid evening. SE wind Sunday morning shifting back to onshore near 10 knots Sunday afternoon.VFR is near high confidence through the evening, but confidence level in cigs lowers late tonight and Sunday morning, as mentioned if a lower level (925 mb level) front develops it may be the focus for ceilings lowering from MVFR to ifr, will look into it a bit more by 06z TAF cycle and of course amend tafs prior to this time as needed. Hydrology A pacific storm may bring moderate to heavy rain to areas from santa cruz county northward for Monday through Wednesday, that will likely cause rapid rises along area streams, creeks, and rivers, especially the russian river. An esf has been issued. Marine As of 3:34 pm pst Saturday... Generally light west winds will continue tonight. Winds will turn southerly on Sunday and ramp up early in the week. Light to moderate northwest swell will persist through the week. Mtr watches warnings advisories Tngt None. Public forecast: palmer aviation: canepa marine: sims 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
LNDC1	2 mi	42 min	W 6 G 8.9	53°F			1026 hPa (-0.5)
AAMC1 - 9414750 - Alameda, CA	3 mi	42 min	W 5.1 G 7	53°F	52°F		1026.3 hPa (-0.6)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	4 mi	42 min	WSW 9.9 G 12
OBXC1	5 mi	42 min		52°F				41°F
OKXC1 - 9414776 - Oakland (Berth 34), CA	5 mi	42 min	W 6 G 7	52°F			1026 hPa (-0.6)
PXOC1 - 9414311 - San Francisco (Pier 1), CA	8 mi	42 min	SW 5.1 G 9.9	52°F			1025 hPa (-0.6)
PXSC1	8 mi	42 min		53°F				41°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA	11 mi	42 min	SW 6 G 8	53°F			1026.1 hPa (-0.8)
FTPC1 - 9414290 - San Francisco, CA	12 mi	42 min	W 7 G 8.9	52°F	54°F		1026.3 hPa (-0.6)
TIBC1 - Tiburon Pier, San Francisco Bay, CA	13 mi	43 min	SSW 5.1	52°F			1026 hPa
RCMC1 - 9414863 - Richmond, CA	13 mi	42 min	SSW 4.1 G 7	53°F	52°F		1025.6 hPa (-0.8)
RTYC1 - 9414523 - Redwood City, CA	19 mi	42 min	N 11 G 14	53°F	52°F		1026.1 hPa (-0.8)
UPBC1	19 mi	42 min	Calm G 1.9
MZXC1 - 9415102 - Martinez-Amorco CA	19 mi	42 min	NE 1.9 G 4.1	53°F	49°F		1025.3 hPa (-1.1)	40°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	19 mi	42 min	SW 12 G 13	53°F			1025.2 hPa (-1.1)
PCOC1 - 9415144 - Port Chicago, CA	22 mi	42 min	ENE 5.1 G 5.1	53°F	49°F		1025.4 hPa (-1.2)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	26 mi	42 min	NE 1.9 G 2.9	54°F			1025.4 hPa (-0.9)
SFXC1 - San Francisco Bay Reserve, CA	31 mi	117 min	W 1.9	56°F			1026 hPa	38°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	31 mi	32 min	W 5.8 G 7.8	52°F	54°F		1026.8 hPa
PRYC1 - 9415020 - Point Reyes, CA	41 mi	42 min			53°F		1026 hPa (-0.5)

Wind History for Alameda, CA

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W5

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N11 G16

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N16 G21

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W8 G11

W12 G16

W8 G13

W7 G11

W6 G10

NW7 G10

W6 G9

NW6 G10

NW9 G15

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N10 G15

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N6 G9

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N8 G12

N7 G12

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W11 G14

NW4 G13

NW8 G23

NW10 G18

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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	6 mi	49 min	W 8	10.00 mi	Mostly Cloudy	54°F	41°F	62%	1026 hPa
Hayward, Hayward Air Terminal, CA	11 mi	48 min	WNW 10	10.00 mi	Mostly Cloudy	55°F	41°F	59%	1026.8 hPa
San Francisco, San Francisco International Airport, CA	12 mi	46 min	W 12	10.00 mi	Mostly Cloudy	53°F	39°F	61%	1025.8 hPa
Concord, Buchanan Field, CA	17 mi	49 min	N 0	10.00 mi	A Few Clouds	58°F	36°F	44%	1024 hPa
San Carlos Airport, CA	17 mi	49 min	W 7	10.00 mi	Mostly Cloudy	55°F	41°F	59%	1025.7 hPa
Palo Alto Airport, CA	22 mi	55 min	NNW 10	10.00 mi	Mostly Cloudy	0°F	0°F	%	1026.4 hPa
Livermore, Livermore Municipal Airport, CA	23 mi	49 min	NW 4	10.00 mi	Mostly Cloudy	55°F	37°F	51%	1025.1 hPa

Wind History from OAK (wind in knots)

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NW12 G18

N11 G19

N11 G20

N12 G24

N9

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Tide / Current Tables for Oakland Harbor, Park Street Bridge, San Francisco Bay, California

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Tide / Current Tables for Oakland Harbor WebStreeter Street, 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 (19,4,5,8)

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Ground Weather Radar Station San Francisco Bay Area, 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.