Wednesday, September26, 2018 L-36.com


Marine Weather and Tides
Port Costa, CA

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:58AMSunset 7:01PM Tuesday September 25, 2018 10:00 PM PDT (05:00 UTC) Moonrise 6:47PMMoonset 6:24AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 815 Pm Pdt Tue Sep 25 2018
Tonight..SW winds 5 to 15 kt. Gusts up to 25 kt this evening.
Wed..SW winds 5 to 15 kt.
Wed night..SW winds 5 to 15 kt.
Thu..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu night..SW winds 10 to 20 kt with gusts up to 30 kt.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt.
Fri night..SW winds 10 to 20 kt with gusts up to 25 kt.
Sat..SW winds 5 to 15 kt.
Sun..SW winds up to 10 kt.
PZZ500 815 Pm Pdt Tue Sep 25 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light to moderate west to northwest winds will continue through the week as an upper ridge remains off the coast of the pacific northwest. Low pressure will then move in resulting in weak southerly winds by this coming weekend.


7 Day Forecast for Marine Location Near Port Costa, CA
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location: 38.03, -122.15     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 252157
afdsto
area forecast discussion
national weather service sacramento ca
257 pm pdt Tue sep 25 2018

Synopsis
Warm weather will continue through Thursday. Cooler with a slight
chance of showers for the weekend into early next week.

Discussion
An upper ridge over the northeast pacific has begun to build into
california today, as a shortwave trough over the northern rockies
shifts eastward. The mfr-rdd pressure gradient has been steadily
decreasing over the last 24 hours, and locally gusty north winds
have diminished as a result. Clear skies prevail across the
region, and although some marine stratus has spread along the
coast, we're not seeing any cooling effects across the interior.

Temperatures this afternoon will be in the 90s across the valley.

Some locally breezy conditions may continue tonight over the
mountains, but should be weaker than the last few nights.

Wednesday will likely be the warmest day this week across the
region, with 90s to near 100 degrees across the valley. Expect
temperatures in the 70s to 90s over the mountains.

Temperatures will cool a couple of degrees Thursday. More
noticeable cooling is expected starting Friday as a closed upper
low approaches the coast. Forecast temperatures on Friday will be
close to normal, with upper 80s to lower 90s across the valley.

Dang
.Extended discussion (Saturday through Tuesday)
pacific low portion of the offshore rex block is forecast to push
onto the north coast by Saturday afternoon. This will bring
significantly cooler temperatures with daytime highs dropping to
between 5 and 10 degrees below normal. GFS and ECMWF both
indicating some precipitation associated with this low over the
coast range and northern mountains Saturday afternoon and evening.

This low opens and shifts to the northeast on Sunday but a few
lingering showers may still be possible over the shasta county
mountains. Models diverge going in to early next week with GFS and
ecmwf coming in with two different but interesting outcomes. Ecmwf
solution brings a fairly strong for the season pacific low and
frontal system into northern california on Monday. Precipitation
amounts with this scenario would be fairly significant for early
october and likely a fire season ending type of event. GFS has a
significantly different outcome taking the pacific low to the
southeast keeping it off the coast. In this scenario, moisture
from a tropical depression now south of baja is forecast to be
pulled northward into southern california on Monday bringing a
significant amount of precipitation to the southern half of the
state. For the most part this model solution would leave northern
california dry although the southern most CWA could receive some
light precipitation. The end of the extended period, next Tuesday
looks dry and a little warmer at this time but model confidence
is low with such a large variation in model solutions.

Aviation
Vfr conditions the next 24 hours. Northwest to northeast winds
10-15 knots gusts to 25 knots sacramento northward and over the
sierra. Otherwise winds generally below 10 knots.

Sto watches warnings advisories
Red flag warning until 5 pm pdt this afternoon for central
sacramento valley in glenn, colusa, yuba, northern sutter, and
butte county below 1000 ft-eastern mendocino nf-eastern portion
of shasta trinity nf-lake county portion of lake-napa-sonoma
unit-northern motherlode from 1000 to 3000 ft. Includes portions
of nevada-yuba-placer-amador and eldorado units-northern
sacramento valley to southern tehama county line below 1000 ft-
northern sierra foothills from 1000 to 3000 ft. Includes
portions of shasta-trinity and butte units-northern sierra
including lassen np and plumas and lassen nf S west of the
sierra crest (west of evans peak-grizzly peak-beckworth peak)-
northern sierra including the tahoe and eldorado nf S west of
the sierra crest-southeast edge shasta-trinity nf and western
portions of tehama-glenn unit-southern sacramento valley in yolo-
sacramento far western placer, southern sutter and solano county
below 1000 ft-stanislaus nf west of the sierra crest.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MZXC1 - 9415102 - Martinez-Amorco CA 1 mi31 min WNW 8 G 9.9 67°F 67°F1012.9 hPa53°F
PCOC1 - 9415144 - Port Chicago, CA 6 mi31 min W 7 G 9.9 66°F 67°F1012.8 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 6 mi31 min WNW 4.1 G 5.1 63°F 1013 hPa
SFXC1 - San Francisco Bay Reserve, CA 13 mi76 min W 9.9 67°F 1011 hPa46°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 14 mi31 min S 7 G 8 59°F 1014.2 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 14 mi31 min WNW 9.9 G 12 76°F 1012.1 hPa
RCMC1 - 9414863 - Richmond, CA 16 mi31 min WSW 5.1 G 8 63°F1013.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 18 mi32 min SSW 5.1 58°F 1014 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi31 min W 5.1 G 7
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi31 min W 6 G 7 57°F 1014.1 hPa
LNDC1 18 mi31 min NE 4.1 G 6 59°F 1014.1 hPa
OBXC1 19 mi31 min 57°F 56°F
PXSC1 20 mi31 min 56°F 56°F
AAMC1 - 9414750 - Alameda, CA 20 mi31 min WNW 2.9 G 7 1014.4 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi31 min SW 5.1 G 13 55°F 1013.1 hPa
FTPC1 - 9414290 - San Francisco, CA 23 mi31 min N 1.9 G 6 1014.4 hPa
46237 - San Francisco Bar, CA (142) 31 mi31 min 58°F3 ft
RTYC1 - 9414523 - Redwood City, CA 36 mi31 min NNW 2.9 G 4.1 60°F 70°F1014.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi21 min WSW 1.9 G 5.8 54°F 55°F1015.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 44 mi37 min Calm G 1.9 58°F1014.3 hPa

Wind History for Martinez-Amorco Pier, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA6 mi68 minN 010.00 miFair71°F48°F46%1011.3 hPa
Napa, Napa County Airport, CA14 mi67 minSSE 710.00 miFair62°F55°F80%1012.2 hPa
Fairfield / Travis Air Force Base, CA21 mi2 hrsSW 1010.00 miFair70°F46°F44%1011.1 hPa
Novato / Gnoss Field, CA23 mi66 minN 610.00 miFair55°F50°F82%1013.2 hPa
Oakland, Metro Oakland International Airport, CA23 mi68 minWNW 610.00 miA Few Clouds57°F55°F93%1014.1 hPa

Wind History from CCR (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmNW3CalmCalmCalmCalmCalmCalmCalm3N4NW5NW8NW9NW11NW7N4NW3CalmN6
1 day agoNW3NW5CalmCalmCalmSE4S4CalmCalm----34CalmN6N7N7NW7NW7NW12NW10W3NW3Calm
2 days agoCalmCalmCalmSE3CalmCalmCalmCalmCalmN3--W4NW5NW8NW9N10NW11NW12W10SW11W6SW8E4S5

Tide / Current Tables for Suisun Point, Carquinez Strait, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Carquinez Strait, California Current
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (1,6,7,8)
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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.