Sunday, March29, 2020
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Marine Weather and Tides
Thermalito, 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 6:52AMSunset 7:29PM Sunday March 29, 2020 6:03 PM PDT (01:03 UTC) Moonrise 8:54AMMoonset 11:45PM Illumination 34% Phase: Waxing Crescent; Moon at 6 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 Thermalito, CA
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location: 39.56, -121.59     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 292132 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 232 PM PDT Sun Mar 29 2020

Synopsis. Rain and snow showers will continue through this evening. Threat of showers persists in the north Monday through Tuesday afternoon, otherwise drier and milder into mid-week.

Discussion. Scattered showers continue across the region this afternoon, mainly west of I-5 and the northern Sierra. Precipitation amounts have ranged from less than 0.05" in the Valley to around 0.05" to 0.50" in the northern mountains and northern Sierra today. Profiler at Colfax shows snow levels currently at around 5000 feet. Additional snow accumulations through this evening will be light, generally less than an inch. Cloudy skies are preventing thunderstorm development this afternoon. Precipitation activity tapers off for most areas this evening as the trough shifts to the east.

A weather system tracking through the Pacific NW will bring a threat of showers to portions of interior NorCal Monday through Tuesday afternoon. Given that best dynamics will remain north of the forecast area, shower chances will be limited to the northern Sacramento Valley, and higher elevations north of I-80. QPF amounts have trended wetter with this system; currently expecting 0.35"-1" (locally up to around 2") in Shasta County and 0.10-0.50" elsewhere. Snow levels are forecast to be from 4500-6000 feet, with snow accumulations in the 1 to 3 inch range except for higher amounts over Lassen National Park. Elsewhere, cloudy skies and dry weather will prevail. Breezy south winds are possible Monday through early Tuesday; gusts up to 15-20 mph are possible.

Regarding temperatures, highs are forecast to warm up slightly each day, and will be near average by Wednesday. Forecast highs on Wednesday will be 5 to 10 degrees warmer than Monday, with Valley highs in the 60s.

EXTENDED DISCUSSION (Thursday THROUGH Sunday). Deterministic and ensemble guidance have trended toward a cooler solution in the extended instead of an amplifying ridge. High temperatures are expected to reach the mid 60s to low 70s across the Valley, while mountain locations will be in the low 40s to upper 50s. An unsettled pattern may return next weekend into early next week as disturbances drop down from the north into the region. Confidence in precipitation amounts and coverage is low this far out given that model solutions diverge significantly.

AVIATION. MVFR cigs expected thru 22Z at RBL/RDD with MVFR cigs returning after 12Z at these terminals. Elsewhere, VFR conditions are expected with winds generally under 12 knots. Breezy south winds and chance of rain at northern Sac Valley terminals after 18Z tomorrow.

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 97 mi79 min WSW 5.1

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oroville Municipal Airport, CA5 mi71 minS 510.00 miMostly Cloudy64°F41°F43%1019.4 hPa
Chico Municipal Airport, CA21 mi77 minS 810.00 miMostly Cloudy63°F41°F45%1019.3 hPa

Link to 5 minute data for KOVE

Wind History from OVE (wind in knots)
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Last 24hrSE5SE5E5SE7SE7SE9SE8SE8SE9SE7SE5SE5SE5SE5SE7S8SE5S4SE3SW5Calm3S5S5
1 day agoSE10SE9SE9SE10SE8SE8SE8SE6SE7SE7SE8SE7E6E5SE7SE11S11S11S7S6SE9S14S9SE9
2 days agoNW3CalmCalmCalmSE4E6E7E6E7SE3SE4W3CalmCalmSE4Calm3S6S7S9SE11
G17
S9SE12SE14

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Sun -- 05:49 AM PDT     0.64 feet Low Tide
Sun -- 06:54 AM PDT     Sunrise
Sun -- 09:56 AM PDT     Moonrise
Sun -- 10:08 AM PDT     2.98 feet High Tide
Sun -- 07:08 PM PDT     0.19 feet Low Tide
Sun -- 07:27 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.91.61.30.90.70.711.72.532.92.62.21.81.30.80.50.30.20.30.71.31.7

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Sun -- 04:19 AM PDT     0.64 feet Low Tide
Sun -- 06:54 AM PDT     Sunrise
Sun -- 08:59 AM PDT     2.98 feet High Tide
Sun -- 09:56 AM PDT     Moonrise
Sun -- 05:38 PM PDT     0.19 feet Low Tide
Sun -- 07:27 PM PDT     Sunset
Sun -- 11:23 PM PDT     2.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.51.10.80.70.71.222.732.92.52.11.61.10.60.40.20.20.40.91.41.82

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 (21,6,7,8)
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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.