Saturday, May30, 2020
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Marine Weather and Tides
Bethel Island, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:44AMSunset 8:24PM Saturday May 30, 2020 5:06 PM PDT (00:06 UTC) Moonrise 12:32PMMoonset 1:13AM Illumination 64% Phase: Waxing Gibbous; Moon at 9 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- 156 Pm Pdt Sat May 30 2020
Tonight..SW winds up to 10 kt.
Sun..SW winds up to 10 kt.
Sun night..SW winds 5 to 10 kt.
Mon..SW winds 5 to 10 kt.
Mon night..SW winds 5 to 10 kt.
Tue..SW winds up to 10 kt.
Tue night..W winds 5 to 10 kt.
Wed..SW winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
PZZ500 156 Pm Pdt Sat May 30 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure west of san francisco will bring scattered showers and possible Thunderstorms through the afternoon hours. Moderate southerly winds along the inner waters will turn southwest tonight and decrease. Northwest winds will increase Sunday and Sunday night. A mixed northwest swell and a building southwest swell will impact the waters through the weekend.


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 302113 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 213 PM PDT Sat May 30 2020

Synopsis. Low pressure moves through today bringing cooler weather with showers and thunderstorms. Locally heavy precipitation possible. Threat of mountain showers and afternoon thunderstorms continues early next week.

DISCUSSION. Low pressure area over the region will generate showers and scattered thunderstorms this afternoon. The low lifts northward this evening into Oregon and thunderstorm activity is expected to die down by 9 pm. HREF precipitation probabilities showing area of 0.5 inch/hr exceedance above 80 percent in watch area around 5 pm.

Showers are expected to linger most of the night over Shasta county diminishing by Sunday morning. A trough of low pressure will remain along the west coast on Sunday. Activity will be minimal with a few afternoon mountain showers possible. Temperatures will warm up around 10 degrees over todays highs.

Afternoon mountain showers and thunderstorms will be possible Monday and Tuesday. Temperatures will be warming each day back to around seasonal normals by Tuesday.

EXTENDED DISCUSSION (Wednesday THROUGH Saturday).

Ensembles and deterministic models continue to show a cutoff low stalling just off the southern California coast for the middle of next week. Depending on how far north this low sets up, embedded shortwaves along the northern portion of the low could produce mountain shower and thunderstorm chances each afternoon next week, mainly over the northern Sierra. Other than that, dry and warm conditions are expected. Temperatures will warm back up to around 5 to 10 degrees above normal Wednesday through Thursday, in the low to mid 90s for the Valley and mountain highs in the 60s to 70s.

Ensembles still indicate a trough approaching from the Gulf of Alaska by Friday. GEFS and EPS continue to show cooling trend, with high temperatures near normal levels. There is also a chance of precipitation by later Friday for the northern mountains, with best potential later in the weekend. EK

AVIATION.

VFR conditions at TAF sites will give way to scattered MVFR and isolated IFR in showers and thunderstorms through about 04Z. Scattered thunderstorms will redevelop this afternoon. Widespread IFR/LIFR conditions over mtns today obscuring higher terrain.

STO WATCHES/WARNINGS/ADVISORIES. Flash Flood Watch until 8 PM PDT this evening for Mountains Southwestern Shasta County to Western Colusa County-Northern Sacramento Valley-Shasta Lake Area / Northern Shasta County.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 13 mi66 min W 9.9 G 14 71°F 1012.2 hPa (+0.0)
PCOC1 - 9415144 - Port Chicago, CA 21 mi66 min W 12 G 13 68°F 71°F1012.4 hPa (+0.0)
SFXC1 - San Francisco Bay Reserve, CA 24 mi81 min W 12
UPBC1 26 mi66 min W 15 G 20
MZXC1 - 9415102 - Martinez-Amorco CA 26 mi66 min WSW 11 G 18 67°F 70°F1012.8 hPa (-0.3)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 33 mi66 min WSW 13 G 17 65°F 1012.8 hPa (+0.0)
LNDC1 37 mi66 min W 11 G 12 65°F 1013.4 hPa (+0.4)
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi66 min W 9.9 G 13 64°F 1013.4 hPa (+0.3)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 39 mi66 min W 13 G 15
PPXC1 - 9414847 - Richmond (Point Potrero), CA 39 mi66 min SW 14 G 19 64°F 1013.8 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 39 mi66 min WSW 9.9 G 12 65°F 69°F1013.6 hPa (+0.4)
OBXC1 40 mi66 min 64°F 59°F
RCMC1 - 9414863 - Richmond, CA 41 mi66 min SW 7 G 13 64°F 65°F1013.5 hPa (+0.3)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 43 mi66 min WSW 5.1 G 13 63°F 1012.6 hPa (+0.3)
PXSC1 43 mi66 min 64°F 58°F
RTYC1 - 9414523 - Redwood City, CA 46 mi66 min S 8.9 G 13 68°F 74°F1013.6 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 46 mi66 min 63°F

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA22 mi73 minWSW 710.00 miMostly Cloudy69°F57°F68%1011.3 hPa
Stockton, Stockton Metropolitan Airport, CA22 mi71 minSSW 710.00 miMostly Cloudy79°F51°F38%1011.8 hPa
Livermore, Livermore Municipal Airport, CA23 mi73 minW 810.00 miOvercast66°F57°F75%1012.8 hPa
Fairfield / Travis Air Force Base, CA24 mi68 minWSW 1210.00 miMostly Cloudy78°F51°F40%1012.5 hPa

Link to 5 minute data for KSCK

Wind History from SCK (wind in knots)
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Last 24hrNW11W16NW11NW12NW10N7N7N7N5NE6E4E4E6E5E7SE4S5S55SE7SE9
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1 day agoNW13W13NW11W9W8W9N6N4N6W3NW9N7N5N8NW83N8W74NW6N9NW9W11NW12
2 days agoNW12NW12NW10NW8W9W9W10CalmN5N4NW4CalmN3N5N34NW64W9NW7NW9NW8W11
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Tide / Current Tables for Irish Landing, Sand Mound Slough, San Joaquin River, California
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Irish Landing
Click for Map
Sat -- 01:08 AM PDT     2.88 feet High Tide
Sat -- 02:12 AM PDT     Moonset
Sat -- 05:45 AM PDT     Sunrise
Sat -- 06:46 AM PDT     1.05 feet Low Tide
Sat -- 11:52 AM PDT     2.77 feet High Tide
Sat -- 01:31 PM PDT     Moonrise
Sat -- 07:06 PM PDT     -0.15 feet Low Tide
Sat -- 08:22 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.92.82.41.81.41.11.11.31.82.32.72.82.62.21.60.90.40-0.1-00.41.11.9

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
Sat -- 01:13 AM PDT     -0.00 knots Slack
Sat -- 02:12 AM PDT     Moonset
Sat -- 04:08 AM PDT     -0.48 knots Max Ebb
Sat -- 05:46 AM PDT     Sunrise
Sat -- 07:02 AM PDT     0.00 knots Slack
Sat -- 09:32 AM PDT     0.31 knots Max Flood
Sat -- 12:01 PM PDT     -0.00 knots Slack
Sat -- 01:32 PM PDT     Moonrise
Sat -- 03:31 PM PDT     -0.81 knots Max Ebb
Sat -- 07:21 PM PDT     0.00 knots Slack
Sat -- 08:23 PM PDT     Sunset
Sat -- 10:36 PM PDT     0.48 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30-0.2-0.4-0.5-0.4-0.3-00.20.30.30.2-0-0.3-0.6-0.8-0.8-0.7-0.5-0.10.20.40.50.5

Weather Map
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wmap_P
GEOS 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 (20,4,5,8)
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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 numerous 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.