Monday, July13, 2020
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Marine Weather and Tides
Copperopolis, 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 5:51AMSunset 8:27PM Monday July 13, 2020 3:55 AM PDT (10:55 UTC) Moonrise 12:00AMMoonset 1:02PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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- 330 Am Pdt Mon Jul 13 2020
.small craft advisory in effect from 9 am pdt this morning through this evening...
.small craft advisory in effect from Tuesday morning through Tuesday evening...
Today..SW winds 15 to 25 kt with gusts up to 30 kt.
Tonight..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue night..SW winds 10 to 20 kt with gusts up to 25 kt.
Wed..SW winds 15 to 25 kt with gusts up to 30 kt.
Wed night..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu..SW winds 5 to 15 kt with gusts up to 25 kt.
Fri..SW winds 5 to 15 kt.
PZZ500 330 Am Pdt Mon Jul 13 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds continuing mainly over the northern and outer coastal waters today into Tuesday. These winds will generate steep fresh swell resulting in hazardous conditions for small craft vessels. By midweek, a nearly stationary low pressure trough will develop over the coastal waters and cause winds to shift to a southerly direction mainly over the southern and inner coastal waters. A longer period south swell will mix with the steep fresh northwest swell.


7 Day Forecast for Marine Location Near Copperopolis, CA
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location: 37.94, -120.54     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 131049 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 349 AM PDT Mon Jul 13 2020

SYNOPSIS. Dry weather with seasonably hot temperatures continuing, though Delta influenced areas will see a bit of a break from triple digit heat this week. Thunderstorms will be possible near the crest Wednesday and Thursday.

DISCUSSION. Trough pushing through the Pacific Northwest has initiated delta breeze tonight with southwest gusts to 35 mph through the delta at KSUU. This will allow overnight temperatures to cool about 5 degrees more than last night. Onshore flow pattern will continue for the Srn Sacramento and Nrn San Joaquin Valleys through the end of the week with temperatures running near to slightly above normal. However, temperatures will get progressively warmer, moving north through the valley with the Redding area staying in the 104 to 109 range for highs through the week, which is 3 to 8 degrees above normal. Wednesday will be the hottest day with a high of 109 currently being forecast. This would push heat levels to moderate/high over portions of Shasta county and a heat product may be needed for Wednesday.

Trough will try to split a bit Wednesday with weak cut-off low developing just off the SoCal coast. This may be enough to develop a southerly mid-level flow over the Sierra, advecting just enough moisture moisture for a few isolated thunderstorms near the high Sierra crest. The Best chances look to be Wed/Thur south of highway 50.

EXTENDED DISCUSSION (Friday THROUGH Monday).

NorCal will remain in between monsoon high over the Four Corners region and westerly flow regime over the Pacific Northwest through the extended. Just enough trough weakness should continue to extend south along the West Coast to keep weak delta flow moving into the Valley. This will likely moderate temperatures enough to prevent excessive heat with current forecasts indicting highs from 3 to 5 degrees above normal through the weekend.

AVIATION.

VFR conditions next 24 hours. Local southwesterly surface wind 15-25 kts with gusts to 35 kts vicinity Carquinez Strait and west Delta.

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 80 mi61 min SSW 9.9 G 14 63°F 71°F1008.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 81 mi70 min WNW 9.9
RTYC1 - 9414523 - Redwood City, CA 94 mi61 min SW 2.9 G 2.9 63°F 75°F1011.6 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
COLUMBIA, CA9 mi60 minN 010.00 miFair64°F39°F40%1012.2 hPa

Link to 5 minute data for KO22

Wind History from O22 (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmS43S56
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1 day agoCalmCalmCalmCalmCalmCalmS4S4SW754CalmSW7SW7W5W4CalmCalmCalmCalmCalm3CalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmSE5S6SW4
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Tide / Current Tables for Holt, Whiskey Slough, San Joaquin River, California
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Holt
Click for Map
Mon -- 01:03 AM PDT     Moonrise
Mon -- 01:24 AM PDT     3.52 feet High Tide
Mon -- 05:54 AM PDT     Sunrise
Mon -- 08:30 AM PDT     0.84 feet Low Tide
Mon -- 01:43 PM PDT     2.42 feet High Tide
Mon -- 02:05 PM PDT     Moonset
Mon -- 07:25 PM PDT     0.70 feet Low Tide
Mon -- 08:28 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.23.53.53.22.621.51.10.90.91.21.72.12.42.42.21.81.30.90.70.71.11.72.4

Tide / Current Tables for Brandt Bridge, San Joaquin River, California Current
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Brandt Bridge
Click for Map
Mon -- 12:25 AM PDT     0.66 knots Max Flood
Mon -- 01:02 AM PDT     Moonrise
Mon -- 03:27 AM PDT     -0.00 knots Slack
Mon -- 05:54 AM PDT     Sunrise
Mon -- 07:23 AM PDT     -0.80 knots Max Ebb
Mon -- 11:01 AM PDT     0.00 knots Slack
Mon -- 01:26 PM PDT     0.34 knots Max Flood
Mon -- 02:05 PM PDT     Moonset
Mon -- 03:29 PM PDT     -0.00 knots Slack
Mon -- 06:57 PM PDT     -0.70 knots Max Ebb
Mon -- 08:27 PM PDT     Sunset
Mon -- 10:16 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.50.2-0.2-0.5-0.7-0.8-0.8-0.6-0.3-00.20.30.30.1-0.2-0.5-0.6-0.7-0.6-0.4-0.10.3

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 (6,6,7,8)
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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 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.