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Marine Weather and Tides Diablo, CA Version 3.4

NOTICE 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 6:01AM

Sunset 8:27PM

Monday July 22, 2019 3:21 PM PDT (22:21 UTC)

Moonrise 10:54PM

Moonset 10:20AM

Illumination 67%

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 Diablo, CA

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

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Fxus66 kmtr 222055 afdmtr area forecast discussion national weather service san francisco bay area 155 pm pdt Mon jul 22 2019 Synopsis A gradual warming trend will continue through midweek, especially across the interior. This will lead to seasonably warm temperatures inland while coastal areas remain mild under the influence of the marine layer as onshore flow persists. Discussion As of 01:55 pm pdt Monday... Satellite imagery shows low clouds along much of the coast with the marine layer situated at around 1000-1200 ft agl. Temperatures across the region this afternoon are about 5 to 10 degrees warmer than this time yesterday as high pressure builds over the four corners. Coastal areas are currently in the upper 60s to low 70s while inland areas are in the mid 80s to low 90s. Expect a few additional degrees of warming this afternoon before temperatures begin to cool off for the evening. The latest run of the 12z NAM remains consistent in showing an increase in mid upper level moisture over eastern and southern california as well as increased mid upper level instability this afternoon evening. Any resulting high based convection that develops is still expected to remain outside of our forecast area with only an increase in mid upper level clouds over the southeastern portion of the region. Stratus offshore will move inland once again tonight with patchy fog along the coast possible late tonight and into tomorrow morning. This week's warming trend will stall tomorrow as a mid upper low currently over the eastern pacific shifts northeastward while its associated trough moves into the pacific northwest. Warming will then continue over the interior on Wednesday as high pressure over the four corners strengthens and builds westward into california. Inland locations will see more widespread 90s mid-week with isolated locations reaching 100 degrees. Persistent onshore flow will likely keep a shallow marine layer in place resulting in continued night morning low clouds and patchy fog along the coast. This will also act to keep highs for coastal areas in the mid 60s to mid 70s. High pressure to our east will continue to be the main driver of our weather through the end of the week and into the upcoming weekend. This will keep seasonably warm conditions across the interior with temperatures at or just above seasonal averages while coastal areas remain relatively mild thanks to the

influence of the marine layer. Aviation As of 10:58 am pdt Monday... A shallow marine layer with a depth of around 1200-1500 feet and building high pressure has allowed clouds to peel back to the coastline this morning.VFR conditions will prevail this afternoon at the TAF sites. Onshore winds will increase this afternoon to around 10-15 kt most sites. The marine layer will remain compressed through tonight as high pressure continues to build overhead. For tonight and Tuesday morning, expect stratus coverage similar to this morning with mainly lifr ifr where clouds develop. Shallow depth should once again prevent clouds from intruding too far into inland valleys. Somewhat lower confidence on development around sf bay, but some cigs in the vicinity are likely to develop overnight. Vicinity of ksfo...VFR this afternoon and evening. Wnw winds increasing this afternoon and early evening to 15-20 kt. For tonight and Tuesday morning, moderate confidence on timing and extent of stratus formation. May see a similar scenario to this morning where the terminal remainedVFR and some CIGS developed over the approach. Will continue to monitor and update as details become more clear. Sfo bridge approach... Similar to ksfo. Monterey bay terminals...VFR conditions this afternoon. Onshore winds increasing this afternoon to around 10-15 kt. Ifr cigs likely to return around 03-04z this evening with conditions deteriorating to lifr overnight. Marine As of 08:42 am pdt Monday... Gusty northwest winds will continue over the northern coastal waters as high pressure builds into the pacific northwest and northern california. Light southerly swell coupled with short period wind waves will continue through the week. Mtr watches warnings advisories Tngt Sca... Pt arena to pt reyes 0-10 nm sca... Pt arena to pigeon pt 10-60 nm sca... Sf bay until 9 pm public forecast: as aviation: st marine: st 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
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA	12 mi	51 min	NW 9.9 G 14	82°F			1012.6 hPa
PCOC1 - 9415144 - Port Chicago, CA	15 mi	51 min	W 13 G 15	81°F	70°F		1013.1 hPa
MZXC1 - 9415102 - Martinez-Amorco CA	16 mi	51 min	WNW 16 G 18	80°F	72°F		1013.1 hPa
UPBC1	16 mi	57 min	WNW 13 G 18
LNDC1	20 mi	51 min	NW 6 G 8	69°F			1014.5 hPa
AAMC1 - 9414750 - Alameda, CA	22 mi	51 min	W 7 G 8	69°F	70°F		1015 hPa
OBXC1	23 mi	51 min		63°F				60°F
OKXC1 - 9414776 - Oakland (Berth 34), CA	23 mi	51 min	WNW 12 G 14	61°F			1014.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA	23 mi	51 min	W 8.9 G 9.9
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA	23 mi	51 min	WSW 8.9 G 11	73°F			1013.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA	24 mi	51 min	SSW 8.9 G 13	63°F			1014.8 hPa
SFXC1 - San Francisco Bay Reserve, CA	24 mi	96 min	W 8.9	88°F			1013 hPa	58°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA	26 mi	63 min	W 6 G 12	66°F			1013.8 hPa
RCMC1 - 9414863 - Richmond, CA	27 mi	51 min	SSE 4.1 G 7	67°F	66°F		1014.3 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA	29 mi	58 min	ESE 6	69°F			1015 hPa
FTPC1 - 9414290 - San Francisco, CA	30 mi	51 min	WSW 8.9 G 16	59°F	61°F		1015.2 hPa
RTYC1 - 9414523 - Redwood City, CA	30 mi	51 min	NNW 11 G 14	71°F	75°F		1014.8 hPa
46237 - San Francisco Bar, CA (142)	39 mi	51 min			60°F	3 ft

Wind History for Port Chicago, CA

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Concord, Buchanan Field, CA	11 mi	28 min	NW 13	10.00 mi	Fair	93°F	53°F	26%	1011.3 hPa
Livermore, Livermore Municipal Airport, CA	13 mi	28 min	WNW 8	10.00 mi	Fair	95°F	54°F	25%	1012.3 hPa
Hayward, Hayward Air Terminal, CA	18 mi	27 min	W 12	10.00 mi	Fair	78°F	60°F	54%	1014.8 hPa
Oakland, Metro Oakland International Airport, CA	20 mi	28 min	WNW 13	10.00 mi	A Few Clouds	76°F	57°F	54%	1014.4 hPa

Wind History from CCR (wind in knots)

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Tide / Current Tables for Pittsburg, New York Slough, Suisun Bay, California

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Tide / Current Tables for Antioch Pt .3 mi E, San Joaquin River, 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 (18,4,5,8)

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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.