Tuesday, January21, 2020
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Marine Weather and Tides
Clyde, 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 7:18AMSunset 5:19PM Tuesday January 21, 2020 7:31 AM PST (15:31 UTC) Moonrise 4:41AMMoonset 2:34PM Illumination 13% Phase: Waning Crescent; Moon at 26 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- 203 Am Pst Tue Jan 21 2020
Today..S winds 10 to 20 kt. Rain.
Tonight..W winds around 5 kt. A chance of rain.
Wed..NE winds up to 10 kt.
Wed night..NE winds up to 10 kt.
Thu..NE winds up to 10 kt.
Thu night..NW winds up to 10 kt.
Fri..SW winds around 5 kt. A chance of rain.
Sat..S winds around 5 kt. Rain likely.
PZZ500 203 Am Pst Tue Jan 21 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Expect moderate to locally breezy southerly winds into this morning as a cold front approaches and moves through the waters today. A longer period northwest swell will build today before peaking mid week generating hazardous seas conditions for smaller vessels. Another long period northwest swell will then arrive later this week.


7 Day Forecast for Marine Location Near Clyde, CA
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location: 38.06, -122.04     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 211120 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 320 AM PST Tue Jan 21 2020

Synopsis. Weather system brings light to moderate amounts of precipitation to interior NorCal through tonight. Dry conditions return for the end of the week, then another weather system is possible by late in the weekend.

Discussion. Radar and satellite imagery indicate the frontal zone is nearing the northwest corner of the state while some light pre-frontal precipitation is spreading inland across the far northern portions of the state. Otherwise, skies are mostly cloudy across the region early this morning with rather mild temperatures. Current readings range from the 30s in the mountains to the 40s across the Central Valley.

Front will continue to weaken as it shifts inland across NorCal today as stronger upper support with the trough lifts north of the area into the PacNW. Precipitation will gradually spread southeast through the day with some light rain likely in the Sacramento region as early as late-morning, but especially during the afternoon. Southerly breezes will also pick up during the day with gusts of 20-30 mph possible in the Sacramento Valley.

Snow levels will be moderately high, generally around 4500-5500 feet. A few inches of snowfall accumulation will be possible across the higher northern Sierra passes from mid-afternoon into the overnight hours tonight and could lead to some travel impacts.

Precipitation chances retreat to the far northern portion of the state during the second half of the week as ridging from the eastern Pacific moves in. Even weaker systems riding over the ridge will bring occasional cloudiness, but showers will mainly remain up by the OR/CA border. Generally milder temperatures expected, but areas of night and morning valley fog will likely become more prevalent.

EXTENDED DISCUSSION (Saturday THROUGH Tuesday). While guidance continues to struggle with the timing and magnitude of the approaching shortwave, there is agreement upon the return of wet weather late Saturday into Sunday. Latest NBM guidance indicates precipitation gradually spreading southeastward during the day Saturday. Light to moderate snowfall accumulations might be possible at pass levels on Sunday. Latest ECMWF ensemble is indicating moderate probabilities of snow exceeding 12 inches over the Sierra and Lassen National Park. If you have mountain travel plans, stay tuned to the latest forecast. Lingering showers are possible into Monday, followed by dry conditions as an upstream ridge moves in.

AVIATION. A Pacific system will spread rain and mountain snow today. Mainly MVFR/IFR conditions are expected in the Valley with IFR/LIFR over the mountains. Winds are expected to be below 12 knots, except for local gusts up to 25 knots over the northern Sacramento Valley; higher gusts over the mountains.

STO WATCHES/WARNINGS/ADVISORIES. None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PCOC1 - 9415144 - Port Chicago, CA 0 mi43 min E 6 G 6 46°F 49°F1018.9 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 5 mi49 min NE 6 G 7 47°F 49°F1019 hPa
UPBC1 5 mi43 min NNE 5.1 G 7
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 8 mi49 min SSE 2.9 G 2.9 47°F 1019 hPa
SFXC1 - San Francisco Bay Reserve, CA 10 mi106 min Calm
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi43 min E 2.9 G 6 51°F 1018.7 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 20 mi43 min SE 8.9 G 13 54°F 1019.4 hPa
LNDC1 22 mi43 min SSE 7 G 9.9 53°F 1019.1 hPa
RCMC1 - 9414863 - Richmond, CA 22 mi43 min 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 23 mi43 min SSE 8.9 G 11 52°F 1019 hPa
OBXC1 24 mi43 min 52°F 50°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 24 mi49 min SE 9.9 G 13
AAMC1 - 9414750 - Alameda, CA 24 mi43 min 52°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 24 mi32 min S 5.1 52°F 1019 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 26 mi43 min SE 9.9 G 12 52°F 1018 hPa
PXSC1 26 mi43 min 53°F 51°F
FTPC1 - 9414290 - San Francisco, CA 29 mi49 min ESE 5.1 G 8 52°F 53°F1019 hPa
46237 - San Francisco Bar, CA (142) 37 mi61 min 53°F7 ft
RTYC1 - 9414523 - Redwood City, CA 39 mi43 min E 4.1 G 5.1 51°F 51°F1019.7 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 47 mi31 min S 18 G 23 53°F 54°F1019 hPa (+0.6)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA6 mi38 minNNE 310.00 miLight Rain51°F46°F83%1017.7 hPa
Fairfield / Travis Air Force Base, CA16 mi33 minN 05.00 miLight Rain Fog/Mist44°F42°F94%1020.3 hPa
Napa, Napa County Airport, CA16 mi37 minE 310.00 miLight Rain49°F46°F90%1018.3 hPa
Vacaville Nut Tree Airport, CA22 mi38 minN 04.00 miLight Rain Fog/Mist46°F44°F93%1019.8 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Last 24hrSE3N3CalmCalmCalmCalmCalmN3NW3CalmCalmN3CalmS3CalmCalmCalmCalmCalmS3SE5SE3CalmNE3
1 day agoNW6N6NE8NE8NE9NE9----NE6NE8NE7CalmCalmCalmCalmCalmW3S4N4NE4N4NW5NW4Calm
2 days agoCalmE4NE5NE6NE9NE6NE7E8NE8E5E3SE3SE4E5E3E4E3CalmNE3E5E4CalmNW6NW6

Tide / Current Tables for Port Chicago, Suisun Bay, California
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Port Chicago
Click for Map
Tue -- 04:41 AM PST     Moonrise
Tue -- 04:47 AM PST     1.86 feet Low Tide
Tue -- 07:20 AM PST     Sunrise
Tue -- 10:53 AM PST     5.42 feet High Tide
Tue -- 02:34 PM PST     Moonset
Tue -- 05:18 PM PST     Sunset
Tue -- 06:37 PM PST     -0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.93.52.92.421.92.22.93.94.75.35.45.14.43.42.31.30.4-0.2-0.30.21.22.33.3

Tide / Current Tables for Roe Island S, Suisun Bay, California Current
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Roe Island S
Click for Map
Tue -- 01:28 AM PST     -0.00 knots Slack
Tue -- 03:58 AM PST     -1.08 knots Max Ebb
Tue -- 04:41 AM PST     Moonrise
Tue -- 06:34 AM PST     0.00 knots Slack
Tue -- 07:20 AM PST     Sunrise
Tue -- 09:25 AM PST     0.94 knots Max Flood
Tue -- 12:40 PM PST     -0.00 knots Slack
Tue -- 02:34 PM PST     Moonset
Tue -- 04:55 PM PST     -2.51 knots Max Ebb
Tue -- 05:18 PM PST     Sunset
Tue -- 09:01 PM PST     0.00 knots Slack
Tue -- 11:45 PM PST     0.79 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.2-0.4-0.9-1.1-0.9-0.40.20.70.90.90.70.3-0.3-1.3-1.9-2.4-2.5-2.3-1.7-0.9-00.40.7

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 (10,2,3,4)
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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.