Friday, May25, 2018 L-36.com


Marine Weather and Tides
Pittsburg, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:47AMSunset 8:21PM Friday May 25, 2018 11:42 AM PDT (18:42 UTC) Moonrise 3:38PMMoonset 2:53AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 813 Am Pdt Fri May 25 2018
Today..SW winds 5 to 15 kt. A chance of showers.
Tonight..W winds 5 to 10 kt.
Sat..SW winds 5 to 15 kt with gusts up to 25 kt.
Sat night..SW winds 5 to 15 kt with gusts up to 25 kt.
Sun..SW winds 10 to 20 kt with gusts up to 30 kt.
Sun night..SW winds 10 to 20 kt with gusts up to 25 kt.
Memorial day..SW winds up to 10 kt.
Tue..SW winds up to 10 kt.
PZZ500 813 Am Pdt Fri May 25 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light winds will continue across the coastal waters this morning before northwesterly winds increase later today into tonight. Gusty northwest winds will persist through much of the weekend. Mixed swells are expected through the forecast period with a moderate northwest swell and a longer period southwest swell.

7 Day Forecast for Marine Location Near Pittsburg, CA
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location: 38.05, -121.87     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 251120
afdsto
area forecast discussion
national weather service sacramento ca
420 am pdt Fri may 25 2018

Synopsis
Widespread showers and isolated thunderstorms today across the
area. Afternoon and evening thunderstorms possible mainly over
higher terrain into next week. Cooler than normal temperatures
continue across most of the region through Saturday, warming to
well above normal for early next week.

Discussion
Rain showers and thunderstorms are spreading into the area this
morning. These are expected to become more widespread through the
morning. Heaviest precipitation south of i80 is expected in the
morning, north of i80 in the afternoon and early evening. Brief heavy
downpours and some small hail can be expected in the stronger
storms. Commuters should be prepared for slick conditions and
ponding of water on roads, and should leave extra time for travel.

Snow levels are quite high currently, over 9000 feet, but will
drop to around 8000 feet later in the evening. A winter weather
advisory continues into Saturday morning for areas of the sierra
above 8000 feet and south of highway 50, where up to 5 inches of
snow is possible. High elevation hikers and campers this weekend
should be prepared for wintry conditions.

Today will be the coolest day of the week as the upper low passes
directly overhead. Temperatures across the area will range
between 10 and 20 degrees below normal. The record low maximum for
downtown sacramento for the date is 65, set in 1915. Our forecast
high is 66, so it will be close to record cool.

Saturday morning showers are possible over the mountains and the
valley north of i80. Drier conditions are expected for the valley
by afternoon, with showers and thunderstorms over the foothills
and sierra- cascade range. Valley temperatures will be warmer, in
the mid 70s to near 80, with some afternoon clearing.

Heading into the Sunday and upper level ridging builds and
temperatures will begin to warm back to above normal levels.

For memorial day, dry and very summer-like weather is expected,
with valley and delta highs in the 90s. Ek
.Extended discussion (Tuesday through Friday)
upper troughing pushing into the eastern pacific will bring a
slight cooling to the otherwise well above normal daytime
temperatures. Models also hint at a shortwave disturbance pivoting
out of this trough bringing a slight threat of showers over the
northern sierra or shasta county mountains depending on model.

Forecast models push the main trough into norcal next Wednesday
bringing an increased chance of showers or thunderstorms over the
sierra cascade range. More significant will be a substantial drop
in daytime temperatures with highs expected to come in just a bit
above normal. Upper troughing over the west coast will still play
a role in norcal weather next Thursday but model differences make
it difficult to place any thunderstorm threat. Have kept showers
over the northern sierra for this forecast cycle. Most locations
should see a continued drop in temperatures however with highs
coming in right around normal. Upper trough should shift east of
the forecast area by the end of next week but upper troughing
over the pacific northwest should keep temperatures from heating
up much.

Aviation
Scattered showers and isolated thunderstorms today. TAF sites
will start out mainlyVFR becoming mainly ifr ceilings after
about 15z. Decreasing showers after 06z Saturday. South to
southwest winds 5 to 15 knots except gusty and erratic near
thunderstorms.

Sto watches warnings advisories
Winter weather advisory until 5 am pdt Saturday for west slope
northern sierra nevada.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 1 mi72 min SW 6 G 9.9 61°F 1018.9 hPa
PCOC1 - 9415144 - Port Chicago, CA 9 mi72 min SSW 6 G 11 60°F 64°F1018.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 13 mi117 min WSW 7 58°F 1019 hPa51°F
MZXC1 - 9415102 - Martinez-Amorco CA 14 mi72 min WSW 6 G 9.9 60°F 63°F1019 hPa52°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 21 mi72 min SW 12 G 17 58°F 1018.7 hPa
LNDC1 28 mi72 min S 6 G 8 57°F 1019.4 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi78 min SW 8.9 G 11 57°F 1019.5 hPa
RCMC1 - 9414863 - Richmond, CA 30 mi72 min S 5.1 G 8 57°F 59°F1019.2 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 30 mi72 min SSE 6 G 7
OBXC1 30 mi72 min 57°F 53°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 30 mi72 min SSE 6 G 8 58°F 1019.4 hPa
AAMC1 - 9414750 - Alameda, CA 30 mi72 min S 4.1 G 8 57°F 61°F1019.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 32 mi73 min S 4.1 57°F 1020 hPa
PXSC1 33 mi72 min 59°F 51°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 33 mi72 min W 4.1 G 6 58°F 1018.3 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi72 min SW 8 G 12 56°F 56°F1019.7 hPa
RTYC1 - 9414523 - Redwood City, CA 42 mi72 min N 4.1 G 6 58°F 63°F1019.8 hPa
46237 - San Francisco Bar, CA (142) 44 mi72 min 53°F4 ft

Wind History for Port Chicago, CA
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W13
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G25
SW15
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G14
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1 day
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SW13
G17
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G20
SW12
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G18

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA11 mi49 minS 11 G 1610.00 miMostly Cloudy64°F48°F58%1017.8 hPa
Fairfield / Travis Air Force Base, CA16 mi1.7 hrsSW 1010.00 miOvercast60°F49°F68%1018.9 hPa
Vacaville Nut Tree Airport, CA23 mi49 minSSW 11 G 1510.00 miMostly Cloudy64°F55°F73%1019.3 hPa
Napa, Napa County Airport, CA24 mi48 minS 1310.00 miOvercast59°F52°F78%1018.3 hPa
Livermore, Livermore Municipal Airport, CA24 mi49 minSW 510.00 miOvercast60°F51°F72%1019.1 hPa

Wind History from CCR (wind in knots)
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Last 24hrSW8
G17
W12SW9W15W16W17
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SW15SW17
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SW10SW10SW8SW7SW8SW10SW7SW7SW10SW11--SW10SW10S11SW12S11
G16
1 day agoW12SW12W15W15W15W14W13SW12SW14SW7W6SW11SW11W10W7W8SW10SW12SW8SW11W12W9SW11SW10
2 days agoS16S15S17
G22
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S16SW14W15W11S14S13SW11SW9SW11SW10SW10SW12SW10SW12SW9SW9SW9S11SW10

Tide / Current Tables for Pittsburg, New York Slough, Suisun Bay, California
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Pittsburg
Click for Map
Fri -- 12:48 AM PDT     4.02 feet High Tide
Fri -- 03:53 AM PDT     Moonset
Fri -- 05:49 AM PDT     Sunrise
Fri -- 07:28 AM PDT     0.10 feet Low Tide
Fri -- 01:08 PM PDT     3.04 feet High Tide
Fri -- 04:37 PM PDT     Moonrise
Fri -- 07:14 PM PDT     0.30 feet Low Tide
Fri -- 08:19 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.943.732.11.30.60.20.20.61.42.12.832.92.41.71.10.60.30.411.92.9

Tide / Current Tables for Chain Island .7 mi SW, Sacramento River, California Current
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Chain Island .7 mi SW
Click for Map
Fri -- 03:02 AM PDT     -0.00 knots Slack
Fri -- 03:53 AM PDT     Moonset
Fri -- 05:49 AM PDT     Sunrise
Fri -- 06:19 AM PDT     -1.67 knots Max Ebb
Fri -- 09:18 AM PDT     0.00 knots Slack
Fri -- 12:16 PM PDT     1.14 knots Max Flood
Fri -- 03:03 PM PDT     -0.00 knots Slack
Fri -- 04:37 PM PDT     Moonrise
Fri -- 06:07 PM PDT     -1.35 knots Max Ebb
Fri -- 08:19 PM PDT     Sunset
Fri -- 08:52 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.30.70-0.7-1.3-1.6-1.6-1-0.20.50.91.11.10.70-0.7-1.1-1.3-1.2-0.70.10.81.3

Weather Map and Satellite Images
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wmap_P
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
Wind Forecast for Sacramento, 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.