Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Discovery Bay, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:25AMSunset 7:52PM Sunday August 20, 2017 4:37 AM PDT (11:37 UTC) Moonrise 4:10AMMoonset 6:20PM Illumination 3% Phase: Waning Crescent; Moon at 28 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 San Francisco Bay North Of The Bay Bridge- 220 Am Pdt Sun Aug 20 2017
.small craft advisory in effect from 1 pm pdt this afternoon through this evening...
Today..SW winds 10 to 20 kt...increasing to 15 to 25 kt in the afternoon. Patchy fog in the morning.
Tonight..SW winds 15 to 25 kt. Patchy fog after midnight.
Mon..SW winds 10 to 20 kt. Patchy fog in the morning.
Mon night..SW winds 15 to 25 kt. Patchy fog after midnight.
Tue..SW winds 10 to 20 kt. Patchy fog in the morning.
Wed..SW winds 10 kt.
Thu..SW winds 10 kt.
PZZ500 220 Am Pdt Sun Aug 20 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate northwesterly winds will continue over the northern outer waters through tonight as high pressure continues to build over the eastern pacific. Accompanying breezy winds will be locally steep wind waves before winds begin to decrease tonight.

7 Day Forecast for Marine Location Near Discovery Bay, CA
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location: 37.89, -121.49     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 201100
afdsto
area forecast discussion
national weather service sacramento ca
400 am pdt Sun aug 20 2017

Synopsis
Temperatures near to slightly above normal through the upcoming
week. Afternoon showers and thunderstorms possible over the
mountains through Wednesday.

Discussion
Upper troughing digging over interior norcal is helping to deepen
584 dm upper low off the socal coast. Low forecast to be
quasistationary through Tuesday before progged to open to trough
and move inland Wednesday. Synoptic cooling and onshore flow will
result in a cooling trend over the next several days with highs by
Tuesday in the upper 80s to 90s in the central valley, with 60s to
80s for the mountains and foothills. Northerly wind over northern
portions of the CWA today will make for some hazy skies as it
draws smoke southward from numerous oregon wild fires. Instability
and moisture convergence over the higher elevations of the sierra
nevada and mountains of western plumas will result in afternoon
thunderstorms again.

Upper low off the socal coast will continue to draw moisture
northward into the area over the next several days leading to a
more widespread threat of deep moist convection, mainly over the
mountains and in the afternoon to evening hours. Tuesday into
Tuesday night looks to be the most active period for mountain
storms. Slight chance of showers and thunderstorms continues over
the higher terrain Wednesday, as temperatures edge up a few
degrees.

Btw, skies should be mostly clear for Monday's eclipse viewing,
however haze smoke may come into play for northern portions of
the cwa.

Pch
.Extended discussion (Thursday through Sunday)
medium range models showing broad troughing aloft continuing over
the forecast area Thursday into Friday then height rising over the
weekend. Drier weather expected with a gradual warming trend.

Temperatures forecast to be around 2 to 6 degrees above normal by
the end of the forecast period.

Aviation
GenlyVFR conds ovr intr norcal nxt 24 hrs exc LCL MVFR ifr poss
in st vcnty of delta til arnd 17z. Also, LCL MVFR poss in hz fu
vcnty krbl nwd. Isold to sct TSTM poss ovr hyr trrn of siernev
and mtns of WRN plumas cnty btwn 21z-01z. Swly sfc wnd gsts up to
30 kts poss thru delta til 16z and aft 23z.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 23 mi49 min WNW 14 G 20 63°F 1009.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 31 mi49 min WSW 14 G 17 61°F 69°F1010.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 35 mi49 min W 9.9 G 13 61°F 68°F1011.1 hPa60°F
SFXC1 - San Francisco Bay Reserve, CA 36 mi112 min WNW 9.9 59°F 1010 hPa57°F
LNDC1 42 mi49 min W 5.1 G 6 61°F 1011.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 43 mi49 min WSW 8.9 G 12 61°F 1010.9 hPa
AAMC1 - 9414750 - Alameda, CA 44 mi49 min W 4.1 G 6 62°F 68°F1011.7 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 45 mi49 min WSW 6 G 8 61°F 1011.2 hPa
OBXC1 45 mi49 min 61°F 58°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 45 mi49 min WSW 11 G 13
PPXC1 - 9414847 - Richmond (Point Potrero), CA 46 mi49 min SW 13 G 16 61°F 1011.3 hPa
RTYC1 - 9414523 - Redwood City, CA 47 mi49 min W 2.9 G 4.1 63°F 73°F1010.7 hPa
PXSC1 48 mi49 min 61°F 58°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 48 mi49 min WSW 7 G 11 60°F 1010.2 hPa
RCMC1 - 9414863 - Richmond, CA 49 mi49 min SSW 8 G 15 61°F 65°F1011.1 hPa

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA13 mi42 minN 49.00 miFair61°F57°F90%1009.7 hPa
Livermore, Livermore Municipal Airport, CA22 mi44 minWNW 310.00 miA Few Clouds60°F57°F90%1010.4 hPa

Wind History from SCK (wind in knots)
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Last 24hrN6CalmNW4NW8NW7NW4N3NW8NW8NW8NW8W6W10NW7NW9NW9N6N9NW6N46NW5N5N4
1 day agoNW4NW3NW5N6N4N4NW55W835NW73NW8W10NW12N7N5NW7NW7NE4N5NW6N5
2 days agoNW5NW5NW4NW4N53W6NW10NW8NW6W10NW7NW8NW12NW12NW10W8W11W11
G25
NW3W7NE3NE4N5

Tide / Current Tables for Borden Highway Bridge, Middle River, San Joaquin River, California
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Borden Highway Bridge
Click for Map
Sun -- 05:10 AM PDT     Moonrise
Sun -- 05:37 AM PDT     3.80 feet High Tide
Sun -- 06:25 AM PDT     Sunrise
Sun -- 01:15 PM PDT     -0.21 feet Low Tide
Sun -- 07:19 PM PDT     3.06 feet High Tide
Sun -- 07:20 PM PDT     Moonset
Sun -- 07:51 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.31.92.73.33.73.83.52.92.11.30.70.1-0.2-0.10.51.32.12.7332.521.5

Tide / Current Tables for Brandt Bridge, San Joaquin River, California Current
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Brandt Bridge
Click for Map
Sun -- 01:50 AM PDT     0.00 knots Slack
Sun -- 04:29 AM PDT     0.72 knots Max Flood
Sun -- 05:09 AM PDT     Moonrise
Sun -- 06:25 AM PDT     Sunrise
Sun -- 07:05 AM PDT     -0.00 knots Slack
Sun -- 11:25 AM PDT     -1.26 knots Max Ebb
Sun -- 03:27 PM PDT     0.00 knots Slack
Sun -- 06:27 PM PDT     0.64 knots Max Flood
Sun -- 07:19 PM PDT     Moonset
Sun -- 07:51 PM PDT     Sunset
Sun -- 08:58 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-0.30.10.50.70.70.50-0.5-0.9-1.1-1.2-1.2-1.1-0.7-0.20.20.50.60.60.4-0-0.3-0.6

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Sacramento, CA (7,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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weather_mapweather_map weather_map

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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.