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Marine Weather and Tides Montalvin Manor, CA Version 3.4

NOTICE 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

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Sunrise 6:49AM

Sunset 7:18PM

Sunday September 15, 2019 7:49 PM PDT (02:49 UTC)

Moonrise 7:29PM

Moonset 7:06AM

Illumination 96%

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 Montalvin Manor, CA

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

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Fxus66 kmtr 152323 afdmtr area forecast discussion national weather service san francisco bay area 419 pm pdt Sun sep 15 2019 Synopsis The cooling trend that began in coastal areas on Saturday will spread inland today and Monday as a weather system moves in from the northwest. There is also a chance of light rain on Monday, mainly across the northern half of the area. A second weather system may bring renewed rain chances around the middle of next week, and also keep temperatures on the cool side of normal through much of the week. Discussion As of 2:23 pm pdt Sunday... Noticeably cooler conditions have finally arrived to the interior areas of the san francisco bay area this afternoon. Yesterday the relief from the heat was only realized along the immediate coast, but as the marine layer ballooned to around 1,500 ft deep along with the increased onshore flow (surface pressure gradient +3.3 mb from sfo-sac today vs +1.2 mb yesterday), the pacific-cooled air has managed to spread inland and drop interior temperatures by 10 to 20 degrees. As of the 2 pm hour, livermore was running 18 degrees cooler than this time yesterday, 14 degrees cooler at concord, and 13 degrees at santa rosa. Bay area-wide, Sunday's high temperatures will register about 2 to 8 degrees below middle september climatological normals. Over the next 24 hours, a frontal system associated with a low in the pacific northwest will push southeastward into northern and central california. This will bring the first decent shot of measurable rainfall of the season to the san francisco bay area. As we'll be on the far southern extent of this system, rain totals are expected to be on the light side, with most locations forecast to receive less than a tenth of an inch. The 18z hrrr that GOES out through 06z Tuesday actually keeps much of the bay area dry with just a few areas of measurable rain in the hills. The mid long range models can be a bit bullish with their handling of these early season systems; therefore, a drier outcome wouldn't at all be surprising with climatology prevailing. Seasonably cool conditions will persist through much of the week as a reinforcing shot of cooler air will arrive with another system that will drop south from the pacific northwest around Wednesday. Right now the best chance for rain with this system will stay north of the golden gate. Should note that the forecast track of this upper low has pushed a bit more to the east over the past few ECMWF and GFS model runs. The latest ECMWF does indicate some north to northeast winds at the 925 and 850 mb levels for the north and east bay mountains overnight Wednesday and into Thursday that will be worth monitoring, particularly if rain

chances are minimal. Temperatures will begin to moderate on Friday and into next weekend as upper level heights rebound. Aviation As of 4:19 pm pdt Sunday... It'sVFR at the terminals, however just beginning to see a few stratus and fog patches already along coastal marin and san mateo counties. Surface to lower level cooling, a deepening marine layer interacting with increasing water vapor advancing from the west brings low clouds MVFR ceilings inland with late afternoon and evening sea breezes. Convergence along a cold front to the NW sweeps southward over the cwa Monday morning with an amplifying 500 mb trough enhancing upward vertical motion. The 00z bay area tafs advertise wet weather with light to moderate rain Monday morning quickly turning to vicinity showers before drier air returns in the afternoon. Patchy drizzle could develop in lowering ceilings to the south, with very light rain to light rain band possible far south Monday morning. Ceilings MVFR tonight and Monday morning except local to areas ifr ceilings over the north bay counties and local ifr overnight southward along the coast. Vicinity of ksfo... Gusty west wind to 25 knots andVFR until mid evening. MVFR tonight with light rain arriving by 10z then moderate rain 13z-18z. Stratus redeveloping in the evening as ongoing cooling and forcing lifting along coastal terrain and alignment of surface to lower level west winds bring an inland intrusion of stratus tonight. Frontal passage occurs Monday morning. Sfo bridge approach... Similar to ksfo. Monterey bay terminals...VFR this afternoon then increasing stratus clouds developing in the early to mid evening. MVFR-ifr ceilings tonight and Monday morning, patchy drizzle possible tonight. Very light to light rain arriving late morning and afternoon. Marine As of 3:43 pm pdt Sunday... Expect locally breezy afternoon and evening winds along the inner coastal waters south of pigeon point and over the bays. Winds will ease early this week as high pressure over the eastern pacific weakens. A cold front will move through the waters on Monday bringing a chance of showers. Mixed seas will continue with moderate period northwest swell and a slightly longer period southerly swell. Mtr watches warnings advisories Tngt Sca... Sf bay until 9 pm sca... Mry bay until 9 pm sca... Pigeon pt to pt pinos 0-10 nm until 9 pm sca... Pt pinos to pt piedras blancas 0-10 nm until 3 am public forecast: rowe aviation 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
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	7 mi	49 min	W 11 G 18	69°F			1009.7 hPa (+0.4)
RCMC1 - 9414863 - Richmond, CA	10 mi	55 min	SW 4.1 G 7	66°F	66°F		1010.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA	11 mi	55 min	SW 9.9 G 12	67°F			1010.9 hPa
UPBC1	14 mi	49 min	W 17 G 22
MZXC1 - 9415102 - Martinez-Amorco CA	14 mi	49 min	W 13 G 17	70°F	71°F		1009.7 hPa (+0.4)	64°F
OKXC1 - 9414776 - Oakland (Berth 34), CA	17 mi	49 min	W 14 G 17	65°F			1010.7 hPa (+0.3)
FTPC1 - 9414290 - San Francisco, CA	18 mi	55 min	WSW 8.9 G 15	63°F	60°F		1011.2 hPa
PXSC1	18 mi	49 min		66°F				64°F
OBXC1	18 mi	49 min		65°F				65°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	18 mi	55 min	W 18 G 23
PXOC1 - 9414311 - San Francisco (Pier 1), CA	18 mi	55 min	WSW 8.9 G 15	64°F			1009.9 hPa
PCOC1 - 9415144 - Port Chicago, CA	19 mi	49 min	WSW 12 G 15	70°F	72°F		1009.8 hPa (+0.5)
LNDC1	19 mi	49 min	W 8 G 13	66°F			1010.9 hPa (+0.3)
AAMC1 - 9414750 - Alameda, CA	20 mi	55 min	W 12 G 15	65°F	70°F		1011.6 hPa
SFXC1 - San Francisco Bay Reserve, CA	22 mi	64 min	W 15	70°F			1009 hPa	60°F
46237 - San Francisco Bar, CA (142)	23 mi	49 min			59°F	3 ft
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	27 mi	49 min	WNW 11 G 17	72°F			1009.2 hPa (+0.8)
PRYC1 - 9415020 - Point Reyes, CA	31 mi	49 min			57°F		1011.1 hPa (+0.0)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA	32 mi	29 min	W 5.8 G 5.8	60°F	59°F		1012 hPa
RTYC1 - 9414523 - Redwood City, CA	39 mi	49 min	WSW 8 G 11	67°F	74°F		1012.3 hPa (+0.5)

Wind History for Richmond, CA

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Novato / Gnoss Field, CA	11 mi	74 min	Var 7 G 15	10.00 mi	Fair	70°F	60°F	73%	1009.5 hPa
Napa, Napa County Airport, CA	12 mi	55 min	W 12	10.00 mi	Fair	69°F	60°F	73%	1008.5 hPa
Petaluma Municipal Airport, CA	18 mi	54 min	W 11 G 17	7.00 mi	A Few Clouds	66°F	62°F	88%	1010.2 hPa
Concord, Buchanan Field, CA	19 mi	56 min	SW 15	10.00 mi	Fair	72°F	55°F	57%	1008.6 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)

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Tide / Current Tables for Pinole Point, San Pablo Bay, California

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Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current

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Weather Map

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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

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Wind Forecast for San Francisco/Monterey Bay Area, CA (22,6,7,8)

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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.