Thursday, October19, 2017 L-36.com


Marine Weather and Tides
Bethel Island, 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 7:19AMSunset 6:23PM Thursday October 19, 2017 8:22 PM PDT (03:22 UTC) Moonrise 6:05AMMoonset 5:47PM Illumination 0% Phase: New Moon; Moon at 29 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- 216 Pm Pdt Thu Oct 19 2017
.small craft advisory in effect from 9 pm pdt this evening through late tonight...
Tonight..W winds 15 to 25 kt. Chance of rain in the evening, then chance of showers after midnight.
Fri..W winds 10 to 20 kt.
Fri night..W winds 10 to 20 kt.
Sat..W winds 5 to 15 kt.
Sat night..NW winds 5 to 15 kt.
Sun..W winds 5 to 15 kt.
Mon..N winds 5 kt.
Tue..N winds 10 kt.
PZZ500 216 Pm Pdt Thu Oct 19 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A cold front will pass over the region later this evening, bringing the first rain of the wet season, a wind shift, and small craft criteria winds to the waters, with occasional gusts up to or exceeding 30 mph. A very robust northwest, long period, large swell train will arrive late this afternoon and through the evening, generating large waves and hazardous seas through at least Saturday. Operators of small crafts are urged to use extreme caution if out at sea over the next several days.

7 Day Forecast for Marine Location Near Bethel Island, CA
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location: 38.01, -121.64     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 192311
afdsto
area forecast discussion
national weather service sacramento ca
411 pm pdt Thu oct 19 2017

Synopsis
Rain chances along with high mountain snow and gusty winds this
evening and Friday. This will be followed by a warming trend early
next week with above normal temperatures through the week.

Discussion
Strong frontal band with quick burst of precip will shift east
over norcal late this afternoon and evening. Snow levels will
start off high above 8000 feet..But drop rapidly after midnight
falling to below 6000 feet. This will cause a quick transition
from rain to snow over the sierra which is likely to cause a
period of hazardous travel along interstate 80 and highway
50... Especially after 2 am. From 3 to 6 inches of snow possibly
locally higher amounts will accumulate by Friday morning. Rainfall
amounts up to 1.50 will be possible over the mountains... 0.25 to
0.50 over the valleys. This will be the first widespread rain
event over many of the fresh fire burn scars... Ash and floatable
debris may clog drains and small streams. Residents near burn
scars should monitor flood prone areas for any water rises. Wind
gusts to 30 mph will be possible over the northern and central
sacramento valley this evening.

Trough will shift east Friday and Saturday, lingering moisture
will will keep a few showers over the mountains through Saturday
morning. High temperatures in the 60's Friday will warm back into
the 70's Sunday... As high pressure re-builds over norcal.

.Extended discussion (Monday through Thursday)
high pressure continues to dominate over california through the
extended period. Warm and dry conditions will persist across the
forecast area with temperatures ranging 10-15 degrees above normal
through Thursday. Valley daytime temperatures will remain in the
mid to high 80s and the foothills and mountains will range from
the 70s to 80s. Could see gusty winds Monday in the western
sacramento valley as the ridge axis increases over the west coast.

Hec &&

Aviation
Vfr conditions at TAF locations. Valley and ridge winds beginning
to increase this afternoon, especially over the ridgetops and
north sacramento valley. Gusts at TAF sites could range between
15-25 kts, then decrease after 08z. Precipitation will move into
interior norcal around 00z and impact TAF sites through Friday
morning with MVFR ceilings possible at times. Jbb hec

Sto watches warnings advisories
Winter weather advisory from 11 pm this evening to 11 am pdt
Friday for west slope northern sierra nevada-western plumas
county lassen park.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCOC1 - 9415144 - Port Chicago, CA 21 mi52 min SSW 8 G 13 61°F 63°F1011.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 24 mi97 min W 8.9 60°F 1011 hPa55°F
MZXC1 - 9415102 - Martinez-Amorco CA 26 mi52 min S 7 G 8.9 61°F 63°F1012 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 33 mi82 min WSW 12 G 14 60°F 1011.5 hPa
LNDC1 37 mi52 min SSW 11 G 14 61°F 1012.2 hPa
AAMC1 - 9414750 - Alameda, CA 39 mi52 min S 9.9 G 14 61°F 63°F1012.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 39 mi52 min S 9.9 G 14
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi52 min S 11 G 14 61°F 1011.9 hPa
OBXC1 40 mi52 min 62°F
RCMC1 - 9414863 - Richmond, CA 41 mi52 min S 8.9 G 12 59°F 60°F1011.7 hPa
PXSC1 43 mi52 min 62°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 43 mi82 min SSE 2.9 G 6 61°F 1011.1 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi65 min SE 4.1 58°F 1012 hPa
RTYC1 - 9414523 - Redwood City, CA 46 mi52 min S 5.1 G 8.9 62°F 65°F1012.3 hPa
FTPC1 - 9414290 - San Francisco, CA 46 mi52 min SSW 8 G 16 60°F 58°F1012.2 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA22 mi27 minWNW 910.00 miOvercast64°F53°F68%1011.9 hPa
Concord, Buchanan Field, CA22 mi29 minS 96.00 miLight Rain Fog/Mist62°F57°F86%1010.3 hPa
Livermore, Livermore Municipal Airport, CA23 mi29 minSSW 510.00 miMostly Cloudy61°F54°F78%1012.1 hPa
Fairfield / Travis Air Force Base, CA24 mi24 minSW 910.00 miLight Drizzle58°F57°F96%1011.5 hPa

Wind History from CCR (wind in knots)
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Last 24hrS10S11S12S10S7SW8W3W9SW8S8S8SW9SW8S10SW106SW13W13W14SW16
G20
SW11SW11SW10S9
1 day agoSE3CalmCalmN3NW4N3CalmCalmCalmSE3SE3CalmCalmCalmCalm--NW4NW8NW11NW8W9W10NW5Calm
2 days agoCalmCalmS3S4S3CalmSE3CalmS4S4CalmCalmCalmCalmCalmNE5CalmN7CalmCalmCalmN3CalmN6

Tide / Current Tables for Davis Slough, San Joaquin River, California
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Davis Slough
Click for Map
Thu -- 04:56 AM PDT     2.92 feet High Tide
Thu -- 07:05 AM PDT     Moonrise
Thu -- 07:19 AM PDT     Sunrise
Thu -- 11:16 AM PDT     0.42 feet Low Tide
Thu -- 12:12 PM PDT     New Moon
Thu -- 05:05 PM PDT     3.31 feet High Tide
Thu -- 06:22 PM PDT     Sunset
Thu -- 06:47 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.81.52.22.72.92.72.21.61.10.70.40.511.82.53.13.33.22.721.30.70.2

Tide / Current Tables for West Island Lt .5 mi SE, San Joaquin River, California Current
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West Island Lt .5 mi SE
Click for Map
Thu -- 12:17 AM PDT     0.01 knots Slack
Thu -- 03:12 AM PDT     0.42 knots Max Flood
Thu -- 05:47 AM PDT     -0.00 knots Slack
Thu -- 07:05 AM PDT     Moonrise
Thu -- 07:20 AM PDT     Sunrise
Thu -- 09:01 AM PDT     -0.66 knots Max Ebb
Thu -- 12:04 PM PDT     0.00 knots Slack
Thu -- 12:12 PM PDT     New Moon
Thu -- 03:01 PM PDT     0.45 knots Max Flood
Thu -- 05:58 PM PDT     -0.00 knots Slack
Thu -- 06:23 PM PDT     Sunset
Thu -- 06:47 PM PDT     Moonset
Thu -- 09:48 PM PDT     -0.79 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.10.20.30.40.40.2-0.1-0.4-0.6-0.7-0.6-0.4-00.20.40.40.40.2-0-0.3-0.6-0.7-0.8-0.7

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 (23,6,7,8)
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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.