Saturday, July4, 2020
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Marine Weather and Tides
Walnut Grove, 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 5:46AMSunset 8:33PM Saturday July 4, 2020 6:04 AM PDT (13:04 UTC) Moonrise 7:32PMMoonset 4:10AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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- 206 Am Pdt Sat Jul 4 2020
.small craft advisory in effect from this afternoon through this evening...
.small craft advisory in effect from Sunday morning through Sunday evening...
Today..SW winds 5 to 10 kt, increasing to 10 to 20 kt with gusts up to 25 kt this afternoon.
Tonight..W winds 10 to 20 kt with gusts up to 25 kt.
Sun..SW winds 10 to 20 kt with gusts up to 25 kt.
Sun night..W winds 15 to 25 kt with gusts up to 30 kt.
Mon..SW winds 10 to 20 kt with gusts up to 25 kt.
Mon night..W winds 10 to 20 kt with gusts up to 30 kt.
Tue..W winds 10 to 20 kt with gusts up to 25 kt.
Wed..SW winds 5 to 15 kt.
PZZ500 206 Am Pdt Sat Jul 4 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will increase across the coastal waters today and tonight as surface high pressure builds over the eastern pacific. Moderate to strong winds will then persist over the waters through the holiday weekend. These winds will generate steep fresh swell resulting in hazardous seas conditions, particularly for smaller vessels. A long-period southerly swell train will persist through the weekend. This will cause occasional breaking waves over nearshore shoals and strong currents along the coast, especially near points and headlands.


7 Day Forecast for Marine Location Near Walnut Grove, CA
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location: 38.23, -121.49     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 041025 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 325 AM PDT Sat Jul 4 2020

SYNOPSIS. Dry weather with seasonable temperatures for the next week.

DISCUSSION. Skies are clear across interior NorCal early this morning. Ft Ord profiler shows a suppressed marine layer early this morning and weaker Delta winds. Current temperatures are running 2 to 6 degrees warmer compared to readings observed early Friday.

Heights aloft will rise this holiday weekend as the PacNW trough weakens and the southwest high nudges northward. This will lead to a slight warming trend. Today's highs will be within a degree or two of normal north of I-80, and then up to 5 degrees above normal along and south of I-80, except about 8 degrees above normal at Delta locations due to the weaker marine influence. Mid 80s to upper 90s are expected in the Valley and foothills. On Sunday, models indicate a slight increase in Delta flow, but temperatures will remain similar to today's.

By early next week, ensembles depict the upper trough slowly sagging southward into the region. Thus, the marine layer will likely deepen with increased onshore flow and slightly below normal highs. Forecast highs in the Valley will be in the low to mid 90s, with upper 60s to low 80s over the mountains.

EXTENDED DISCUSSION (Wednesday THROUGH Saturday).

Ensemble means continue strong ridging over the central CONUS while maintaining a weak trough along the West Coast later next week. Dry weather with temperatures close to average is expected to persist.

AVIATION.

VFR conditions next 24 hours. Southwesterly surface wind gusts 15-25 kts continuing vicinity Carquinez Strait and West Delta, otherwise local southerly surface wind gusts 10-20 kts 20Z-02Z Sunday.

STO WATCHES/WARNINGS/ADVISORIES. None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 25 mi47 min NW 9.9 G 14 63°F 1014.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi80 min W 6
PCOC1 - 9415144 - Port Chicago, CA 31 mi47 min W 14 G 17 60°F 68°F1015.3 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 36 mi47 min WNW 11 G 13 58°F 68°F1015.6 hPa
UPBC1 36 mi47 min NW 12 G 16
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 43 mi47 min W 8 G 11 58°F 1015.7 hPa
AAMC1 - 9414750 - Alameda, CA 53 mi47 min WNW 1.9 G 2.9 58°F 68°F1016.5 hPa

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento Executive Airport, CA20 mi72 minSSE 310.00 miFair59°F48°F69%1014.9 hPa
Fairfield / Travis Air Force Base, CA24 mi67 minSW 1110.00 miFair57°F51°F83%1015.5 hPa

Link to 5 minute data for KSAC

Wind History from SAC (wind in knots)
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Last 24hrS6S7SW5S864S8SW7W106W8S96S7S7S75S4SE4SE3S4S4SE3SE3
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2 days agoS4S5SW6SW3CalmCalmCalm34SW5SW7SW10SW13SW10S11
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Tide / Current Tables for New Hope Bridge #4, San Joaquin River, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
New Hope Bridge #4
Click for Map
Sat -- 12:10 AM PDT     1.34 feet Low Tide
Sat -- 05:10 AM PDT     Moonset
Sat -- 05:28 AM PDT     4.22 feet High Tide
Sat -- 05:48 AM PDT     Sunrise
Sat -- 01:59 PM PDT     -0.46 feet Low Tide
Sat -- 07:38 PM PDT     3.03 feet High Tide
Sat -- 08:31 PM PDT     Moonrise
Sat -- 08:32 PM PDT     Sunset
Sat -- 09:44 PM PDT     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.52.12.93.74.24.23.83.22.41.60.90.2-0.3-0.5-0.20.61.52.42.932.72.31.9

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
Sat -- 02:51 AM PDT     0.75 knots Max Flood
Sat -- 05:10 AM PDT     Moonset
Sat -- 05:48 AM PDT     Sunrise
Sat -- 06:14 AM PDT     -0.00 knots Slack
Sat -- 10:17 AM PDT     -0.65 knots Max Ebb
Sat -- 02:18 PM PDT     0.01 knots Slack
Sat -- 05:20 PM PDT     0.60 knots Max Flood
Sat -- 08:30 PM PDT     Moonrise
Sat -- 08:31 PM PDT     Sunset
Sat -- 08:36 PM PDT     -0.00 knots Slack
Sat -- 09:44 PM PDT     Full Moon
Sat -- 10:39 PM PDT     -0.21 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.40.70.70.60.40.1-0.2-0.4-0.6-0.7-0.6-0.5-0.3-0.10.20.50.60.60.40.2-0.1-0.2-0.2

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 (9,2,3,4)
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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.