Sunday, April5, 2020
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Marine Weather and Tides
August, 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 6:41AMSunset 7:33PM Sunday April 5, 2020 1:44 PM PDT (20:44 UTC) Moonrise 3:54PMMoonset 4:38AM Illumination 95% 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- 837 Am Pdt Sun Apr 5 2020
.small craft advisory in effect until 1 pm pdt this afternoon...
Today..SW winds 15 to 25 kt with gusts up to 30 kt. Showers and a slight chance of Thunderstorms.
Tonight..W winds up to 10 kt. A chance of showers.
Mon..NW winds around 5 kt. A chance of showers.
Mon night..W winds around 5 kt. A slight chance of showers.
Tue..SW winds around 5 kt.
Tue night..W winds 5 to 10 kt.
Wed..SW winds up to 10 kt.
Thu..SW winds up to 10 kt. Winds and wind waves higher in and near Thunderstorms.
PZZ500 837 Am Pdt Sun Apr 5 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate to heavy showers will persist today along with a slight chance of Thunderstorms due to a cold upper low moving in from the gulf of alaska. This will also result in breezy west to southwest winds across portions of the coastal waters. The low will slowly exit the area into Tuesday before high pressure rebuilds over the eastern pacific mid to late next week. A prevailing moderate northwesterly swell will persist through much of the forecast period.


7 Day Forecast for Marine Location Near August, CA
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location: 37.95, -121.28     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 051055 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 355 AM PDT Sun Apr 5 2020

Synopsis. Rain, gusty winds, chances for thunderstorms, heavy mountain snow, and travel issues are forecast for today and early this week. Below average temperatures likely through Tuesday with a gradual warm up thereafter.

Discussion. Valley rain and mountain snow continues this morning across portions of interior northern California. The profiler over at Colfax is indicating that the snow level is around 4500 to 5000 feet. Snow levels are expected to hold between 4000 and 5000 feet through much of the day across the Sierra and then gradually fall to 3000 to 3500 during the evening and overnight hours. We can expect to see another 1 to 2 feet of snow through Monday morning, with the higher elevations seeing up to 4 feet of snow. Heavy snow is expected at times which will make travel difficult today.

In addition to the snow, the Valley and foothills will see continued chances for rain. Models indicate that there is a small chance that the atmosphere could destabilize this afternoon. HREF guidance shows some clearing in the northern Sacramento Valley and the northeast foothills. Should we get some clearing thunderstorms will be possible. Profiles support heavy rain and small hail should storms develop which could lead to some minor flooding. During the morning through mid afternoon as these storms move through winds should be increasing, becoming windy at times before tapering in the late afternoon.

The low will be slowly moving southward along the coast Sunday night and Monday. By Monday the heavier precipitation should be behind us with showers continuing on Monday. Some instability continues over the southern areas of the forecast area . mainly south of Marysville and including the adjacent foothills so have mention of slight chance of afternoon through early evening thunderstorms.

On Tuesday the low moves off the coast of Southern California. Some moisture warping back around may produce some showers but for the most part expect dry conditions and warmer temperatures. Come Wednesday, high pressure continues to build which will continue the warmer temperature trend.

EXTENDED DISCUSSION (Thursday THROUGH Sunday).

Dry and milder weather expected across the region late this week and next weekend as high pressure over the eastern Pacific builds into NorCal. Temperatures will be above average.

AVIATION.

Widespread MVFR with local IFR next 24 hours as a weather system affects the region. Isolated thunderstorms possible. Snow levels 035-055. Areas southerly wind gusts 20-30 kts.

STO WATCHES/WARNINGS/ADVISORIES. Winter Storm Warning until 11 AM PDT Monday for Burney Basin / Eastern Shasta County-Mountains Southwestern Shasta County to Western Colusa County-Shasta Lake Area / Northern Shasta County- 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
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi62 min WSW 5.1 G 8 53°F 1004.5 hPa
PCOC1 - 9415144 - Port Chicago, CA 41 mi56 min SW 9.9 G 16 53°F 58°F1004.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 43 mi59 min SSW 9.9
MZXC1 - 9415102 - Martinez-Amorco CA 45 mi56 min SW 11 G 16 54°F 58°F1004.5 hPa
UPBC1 45 mi56 min WSW 17 G 19
AAMC1 - 9414750 - Alameda, CA 55 mi56 min W 8 G 13 52°F 58°F1005.6 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA3 mi49 minW 178.00 miLight Rain54°F48°F83%1005.3 hPa

Link to 5 minute data for KSCK

Wind History from SCK (wind in knots)
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Last 24hrSE6SE7SE8E9SE8SE7S4CalmSE3SE7SE8SE11CalmCalmS4SE7SE10SE8SE9SE18SE17
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NW6NW7W8NW8W11W12W12W9W8W4W7W8W4W6SW3CalmSW4W7W6SW3SW6Calm
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--NW10----W7W11W10W10W9W7W7NW3NW4CalmNW3NW5W5W8W8W7W11NW8W9

Tide / Current Tables for Blackslough Landing, San Joaquin River, California
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Blackslough Landing
Click for Map
Sun -- 05:08 AM PDT     3.25 feet High Tide
Sun -- 05:38 AM PDT     Moonset
Sun -- 06:43 AM PDT     Sunrise
Sun -- 11:06 AM PDT     0.67 feet Low Tide
Sun -- 04:33 PM PDT     3.62 feet High Tide
Sun -- 04:54 PM PDT     Moonrise
Sun -- 07:33 PM PDT     Sunset
Sun -- 11:46 PM PDT     -0.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.71.52.333.23.12.61.91.30.90.70.91.52.33.13.63.63.22.61.810.4-0

Tide / Current Tables for Vulcan Island .5 mi E, San Joaquin River, California Current
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Vulcan Island .5 mi E
Click for Map
Sun -- 02:52 AM PDT     0.67 knots Max Flood
Sun -- 05:37 AM PDT     Moonset
Sun -- 06:12 AM PDT     -0.00 knots Slack
Sun -- 06:43 AM PDT     Sunrise
Sun -- 08:55 AM PDT     -0.39 knots Max Ebb
Sun -- 11:45 AM PDT     0.00 knots Slack
Sun -- 02:27 PM PDT     0.68 knots Max Flood
Sun -- 04:54 PM PDT     Moonrise
Sun -- 05:35 PM PDT     -0.00 knots Slack
Sun -- 07:32 PM PDT     Sunset
Sun -- 08:43 PM PDT     -0.59 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.40.60.70.60.40.1-0.2-0.3-0.4-0.3-0.20.10.50.70.70.50.2-0.1-0.4-0.6-0.6-0.5-0.4

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 (16,3,4,5)
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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.