Sunday, July12, 2020
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Marine Weather and Tides
Nevada City, 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 5:49AMSunset 8:32PM Sunday July 12, 2020 2:17 PM PDT (21:17 UTC) Moonrise 12:00AMMoonset 12:07PM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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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7 Day Forecast for Marine Location Near Nevada City, CA
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location: 39.25, -121     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 122104 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 204 PM PDT Sun Jul 12 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 will be moving through the Pacific Northwest over the next day and high pressure over the Pacific will spread closer to the west coast. This will allow for the marine stratus deck to reform along the coast. Some stratus will start to reform overnight tonight in the Bay Area with some better formation expected Monday night. The Delta breeze will increase starting later this evening and have stronger flow through Wednesday. The strongest winds will occur at night with winds 15 to 25 mph and local gusts to 35 mph. The stronger flow will help to cool temperatures for the Sacramento region with highs expected in the mid to upper 90s through Tuesday. Little change is expected further inland. Slightly warmer temperatures are expected on Wednesday due to high pressure strengthening over the region. Redding could see temperatures heat up to near 110 degrees.

On Wednesday a weak upper low off the Southern California coast will help to spread some monsoonal moisture northward and may bring some thunderstorms along the crest late in the day and evening. Southeast to east flow aloft should help to carry any storms/moisture westward. At this time there is just a mention near the crest south of Lake Tahoe but it is something to keep an eye on in terms of possible coverage should storms persist late into the evening.

EXTENDED DISCUSSION (Thursday THROUGH Sunday).

While the prevailing westerlies stay confined to the Pacific Northwest and points northward, a sprawling ridge of high pressure will remain in place from the eastern Pacific to the Southern Plains. However, this ridge should have a weakness in it as a broad trough elongates off the California coast. Although synoptic gradients are fairly weaken (ridge/trough height differences of around 6-8 dm), the combination of these features may bring subtropical moisture into the picture by mid to late in the work week. The guidance diverge in whether to bring any showers/thunderstorms to the Sierra on Thursday with the 12Z GFS remaining on the optimistic side. Energetics with the offshore trough combined with any emergence of instability will increase the likelihood of shower activity across the higher terrain. Have introduced a chance of such storms over eastern Tuolumne and western Alpine Counties for Thursday afternoon and evening.

Even though mid-level heights come down a bit within this mentioned weakness in the ridge, daily temperatures are forecast to run slightly above average throughout the week. Triple digits are most likely to be found across the northern and central Sacramento Valley into the adjacent lower Sierra foothills. Periods of enhanced Delta flow should keep the lower Sacramento Valley into the San Joaquin Valley closer to the mid to upper 90s. Although no records are being broken during this extended period of heat, temperatures will remain above average with some overnight relief in Delta influenced locations. ~BRO

AVIATION.

VFR conditions next 24 hours. Local southwesterly surface wind 15-25 kts with gusts to 35 kts vicinity Carquinez Strait and west Delta after 03Z.

STO WATCHES/WARNINGS/ADVISORIES. None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 91 mi92 min WSW 2.9
PCOC1 - 9415144 - Port Chicago, CA 99 mi47 min W 13 G 15 82°F 72°F1010.7 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nevada County Air Park, CA2 mi22 minN 0 G 1110.00 miFair91°F35°F14%1016.9 hPa
Emigrant Gap, Blue Canyon Nyack Airport, CA16 mi25 minSW 8 G 1410.00 miFair80°F39°F24%1011.6 hPa
Auburn Municipal Airport, CA21 mi22 minSSW 410.00 miFair97°F28°F9%1013.5 hPa

Link to 5 minute data for KGOO

Wind History from GOO (wind in knots)
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4CalmCalmCalmCalmCalmCalmCalmE6E4CalmCalmE3E6CalmE6E5E4CalmCalm556
1 day ago4W84CalmW6W3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE4CalmCalmCalm46SW6
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W5Calm5W5SW3CalmCalmCalmCalmE4E5E4E7E6E6CalmE5E3CalmCalmCalmCalm3

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Sun -- 12:38 AM PDT     Moonrise
Sun -- 01:35 AM PDT     2.59 feet High Tide
Sun -- 05:52 AM PDT     Sunrise
Sun -- 09:13 AM PDT     0.62 feet Low Tide
Sun -- 01:05 PM PDT     1.96 feet High Tide
Sun -- 01:09 PM PDT     Moonset
Sun -- 04:31 PM PDT     Last Quarter
Sun -- 08:30 PM PDT     Sunset
Sun -- 08:37 PM PDT     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.52.62.42.11.71.310.70.60.81.31.821.91.71.41.10.70.40.30.30.61.2

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Sun -- 12:26 AM PDT     2.59 feet High Tide
Sun -- 12:38 AM PDT     Moonrise
Sun -- 05:52 AM PDT     Sunrise
Sun -- 07:43 AM PDT     0.62 feet Low Tide
Sun -- 11:56 AM PDT     1.96 feet High Tide
Sun -- 01:09 PM PDT     Moonset
Sun -- 04:31 PM PDT     Last Quarter
Sun -- 07:07 PM PDT     0.27 feet Low Tide
Sun -- 08:30 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.62.62.321.51.20.90.70.611.51.821.91.71.30.90.60.40.30.40.81.52.1

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 (17,4,5,8)
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Ground Weather Radar Station Beal AFB, 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.