Sunday, February17, 2019 L-36.com


Marine Weather and Tides
Antioch, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:53AMSunset 5:49PM Sunday February 17, 2019 8:10 PM PST (04:10 UTC) Moonrise 3:44PMMoonset 5:31AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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 The San Francisco Bay North Of The Bay Bridge- 604 Pm Pst Sun Feb 17 2019
.small craft advisory in effect until 9 pm pst this evening...
Tonight..NW winds 10 to 20 kt with gusts up to 25 kt... Diminishing to 5 to 15 kt after midnight.
Washingtons birthday..N winds 5 to 15 kt.
Mon night..N winds 5 to 10 kt.
Tue..NE winds 5 to 10 kt.
Tue night..NW winds 5 to 10 kt.
Wed..NW winds 10 to 20 kt with gusts up to 30 kt.
Wed night..NW winds 5 to 15 kt.
Thu..N winds 5 to 15 kt.
Fri..NW winds up to 10 kt.
PZZ500 604 Pm Pst Sun Feb 17 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate and gusty winds are forecast to prevail over the coastal waters through the evening hours and overnight. The northwest swell that arrived late Friday and Saturday will continue to gradually diminish overnight. A second long period northwest swell train is set to arrive during the week and will bring with it more modest swell heights.


7 Day Forecast for Marine Location Near Antioch, CA
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location: 38.03, -121.82     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 172304
afdsto
area forecast discussion
national weather service sacramento ca
304 pm pst Sun feb 17 2019

Synopsis
Cold disturbance will bring showers through the early evening.

Dry Monday and Tuesday. A weak, cold system is possible Wednesday
and Thursday with light mountain and foothill snow.

Discussion
Broad upper trough is positioned over much of the western states
with a disturbance rotating through it over the sierra foothills.

This will generate snow showers into the early evening. Cold air
has moved over the area with this system, causing low elevation
snow down to many foothill locations. We have received reports of
several inches at foothill locations such as placerville, colfax
and sonora. After a brief break early this afternoon models
indicate increased snow shower coverage and intensity between
3-8pm with instability rotating behind disturbance. Best snow into
the evening will be over the sierra from i80 south where 3 to 5
inches will be possible at pass level... 1 to 3 inches is expected
for foothill locations between 1500-3000 feet, locally higher in
more intense convective snow showers.

Upper low will move east Monday into Tuesday with high pressure
providing a return to dry weather. Breezy north winds are expected
to develop on the back side of the low during this period.

Morning lows will be on the cold side with valley readings in the
low to mid 30's... Foothills mid upper 20's. The breezy winds will
act to diminish the freeze threat over the cent SRN valley.

A cold system will drop south over norcal Wednesday and Thursday.

This system appears to be quite dry at this time with valley
rainfall less than 0.10. Due to the cold origin of the system
snow levels could again drop into the foothills around 1500 feet
with 1-3 inches possible. 3-6 inches are currently forecast at
pass level.

.Extended discussion (Thursday through Sunday)
extended period starts out with a cold inside slider type system
dropping into the great basin on Thursday bringing a shower threat
to areas mainly east of the central valley. This system which
originated in the gulf of alaska will bring low snow levels again
with light snow possible down below 1000 feet. Impacts with this
system should be minor as QPF values with this dry system will be
minimal. At this time, Friday looks dry under northerly upper
flow and high pressure ridging. Temperatures warm on Friday but
cool airmass will keep daytime highs several degrees below normal.

Upper ridge breaks down quickly as next upper low pressure system
drops out of the gulf of alaska and approaches the pacific
northwest coast on Saturday. Models differ on just how far south
precipitation will reach with GFS digging precipitation somewhat
farther south than ecmwf. Current model runs bring precipitation a
bit further south than previous runs. Snow levels with this
system will be more moderate than previous systems but still
relatively low and below 4000 feet. Keep an eye on the forecast
for updated information as confidence is still low at this time.

Aviation
Vfr conditions except brief MVFR ifr conditions in showers through
Sunday evening. Southerly winds northerly winds 10 to 15 mph with
isolated gusts to 20 to 30 mph.

Sto watches warnings advisories
Winter weather advisory until 8 pm pst this evening for
motherlode-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 4 mi41 min W 1.9 G 2.9 45°F 1017.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 12 mi41 min S 5.1 G 7 43°F 50°F1017.9 hPa
UPBC1 16 mi41 min NW 1 G 1.9
SFXC1 - San Francisco Bay Reserve, CA 16 mi86 min ENE 4.1 40°F 1017 hPa34°F
MZXC1 - 9415102 - Martinez-Amorco CA 16 mi41 min SSW 1.9 G 1.9 44°F 50°F1018 hPa44°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 24 mi41 min SSE 4.1 G 5.1 46°F 1017.7 hPa
LNDC1 29 mi41 min E 1.9 G 4.1 48°F 1017.7 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 30 mi41 min NW 6 G 8.9 49°F 1018 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 31 mi41 min NW 8.9 G 12
OKXC1 - 9414776 - Oakland (Berth 34), CA 31 mi41 min NNW 12 G 15 48°F 1017.7 hPa
AAMC1 - 9414750 - Alameda, CA 31 mi47 min WNW 7 G 9.9 48°F 53°F1018 hPa
OBXC1 32 mi41 min 49°F 40°F
RCMC1 - 9414863 - Richmond, CA 32 mi41 min WNW 5.1 G 7 48°F 52°F1017.6 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 34 mi41 min NW 4.1 G 7 48°F 1016.8 hPa
PXSC1 34 mi41 min 50°F 39°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 35 mi54 min NNW 14 47°F 1017 hPa
FTPC1 - 9414290 - San Francisco, CA 38 mi41 min WSW 1.9 G 4.1 47°F 53°F1018.1 hPa
RTYC1 - 9414523 - Redwood City, CA 42 mi41 min ENE 6 G 9.9 47°F 53°F1018.5 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA13 mi78 minS 510.00 miOvercast45°F37°F77%1016.2 hPa
Fairfield / Travis Air Force Base, CA18 mi73 minWNW 510.00 miFair40°F33°F79%1018 hPa
Livermore, Livermore Municipal Airport, CA23 mi78 minW 118.00 miLight Rain42°F35°F76%1017.1 hPa

Wind History from CCR (wind in knots)
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2 days agoS14SW8SW11S8SW11SW7SW7SW7S7SW9S9S8S13SW14SW14SW14--CalmSW16
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Tide / Current Tables for Antioch, San Joaquin River, California
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Antioch
Click for Map
Sun -- 02:20 AM PST     3.27 feet High Tide
Sun -- 05:29 AM PST     Moonset
Sun -- 06:55 AM PST     Sunrise
Sun -- 07:26 AM PST     1.59 feet Low Tide
Sun -- 01:02 PM PST     4.44 feet High Tide
Sun -- 03:43 PM PST     Moonrise
Sun -- 05:47 PM PST     Sunset
Sun -- 08:56 PM PST     -0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.93.23.22.82.31.91.61.62.12.83.64.24.44.33.72.921.10.4-0.1-0.3-00.7

Tide / Current Tables for Antioch Pt .3 mi E, San Joaquin River, California Current
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Antioch Pt .3 mi E
Click for Map
Sun -- 01:45 AM PST     1.36 knots Max Flood
Sun -- 04:25 AM PST     -0.00 knots Slack
Sun -- 05:29 AM PST     Moonset
Sun -- 06:41 AM PST     -0.71 knots Max Ebb
Sun -- 06:55 AM PST     Sunrise
Sun -- 09:13 AM PST     0.00 knots Slack
Sun -- 12:19 PM PST     1.72 knots Max Flood
Sun -- 02:58 PM PST     -0.01 knots Slack
Sun -- 03:43 PM PST     Moonrise
Sun -- 05:47 PM PST     Sunset
Sun -- 06:35 PM PST     -1.99 knots Max Ebb
Sun -- 11:05 PM PST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.31.310.3-0.3-0.6-0.7-0.5-0.10.61.31.71.61-0-0.9-1.6-1.9-2-1.8-1.4-0.8-0.1

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 (23,6,7,8)
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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.