Monday, January25, 2021
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L-36.com

Marine Weather and Tides
Chico, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:19AMSunset 5:20PM Monday January 25, 2021 3:51 PM PST (23:51 UTC) Moonrise 2:25PMMoonset 5:00AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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 Chico, CA
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location: 39.75, -121.84     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 251149 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 349 AM PST Mon Jan 25 2021

SYNOPSIS. Light rain and snow expected into early this morning as a cold system moves across Northern California. Freezing temperatures are expected across much the area Tuesday morning. A long duration, high impact winter storm is expected Tuesday evening into Friday bringing periods of gusty winds and moderate to heavy rain and mountain snow. Potential for significant low elevation snow and damaging winds Tuesday night and Wednesday.

DISCUSSION. Radar shows continued rain and mountain snow showers across much of interior Northern California early this morning. Rain amounts for yesterday into this morning range anywhere from generally 0.10- 0.75", with a few locally higher amounts seen. Scattered precipitation is expected to continue into the morning, with some lingering mountain precipitation possible into the evening. Any additional snow amounts for the afternoon and evening across the Central Sierra are expected to be light.

Behind this system, breezy north winds are expected this afternoon across the Valley with local gusts up to 30 mph possible. Skies clear this evening and overnight temperatures quickly fall to near or below freezing for most areas. Expect valley temperatures early Tuesday morning anywhere from the mid 20s to low 30s and mountain temperatures in the single digits to teens. A Hard Freeze Warning has been issued for the Valley as this may be the first long duration freeze event for the winter. This cold air precedes the next storm and is what will lead to the low elevation snow at the begining of this next event.

The advertised high impact, cold winter storm arrives Tuesday early evening beginning in the northwest portion of the area and continues southeast overnight into Wednesday. The biggest changes with the forecast come with strong winds and low elevation snow across the far northern Sacramento Valley. For the snow, snow levels begin extremely low on Tuesday especially in the Shasta County and northern Sacramento Valley area. Ensemble guidance indicates a good chance for low elevation snow in this area between Tuesday evening and Wednesday morning, possibly down to around 500 feet impacting areas such as Redding with even some possible light accumulation down to Red Bluff. Have expanded the Winter Storm Watch to include these areas until Wednesday morning before snow levels begin to rise through the day.

Southerly winds increase rapidly overnight as this storm moves in with 925mb NAM winds maxing out around 80 mph. This may translate to winds across the Valley of 35 to 45 mph with gusts of up to 60 mph. A High Wind Watch has been issued for these anticipated damaging winds. With widespread rain and snow also anticipated during these overnight hours, expect extremely poor visibilities and hazardous travel conditions.

Snow levels increase on Wednesday above 3000 feet with heavy snowfall expected to continue into Friday morning. By the end of the week, multiple feet of snow will be likely in the mountains with a few inches of rain in the Valley. There may be some breaks in Valley precipitation during this multiple day event and rain may vary from very light to extremely heavy at times. Local flooding may be of a concern especially on roadways.

EXTENDED DISCUSSION (Friday THROUGH Monday). Active storm pattern continues late this week into early next week as an upper trough remains off the coast bringing persistent moist southwest flow into NorCal. Precipitation amounts likely to be significantly less than earlier in the week on Friday and Saturday giving a relative break to mountain travelers, but another round of impactful mountain snow looks likely Sunday into Monday.

AVIATION. Widespread IFR expected to continue across the northern Sierra Nevada into this evening with scattered snow showers. Elsewhere, VFR conditions likely to predominate the next 24 hours except for local MVFR vicinity lingering isolated showers until about 18Z. Northerly surface wind gusts 20-25 kts in the Central Valley from about 18Z until 00Z Tuesday.

STO WATCHES/WARNINGS/ADVISORIES. Winter Weather Advisory until 9 AM PST this morning for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Winter Storm Watch from Tuesday evening through late Thursday night for Burney Basin / Eastern Shasta County-Motherlode- Mountains Southwestern Shasta County to Western Colusa County- Northeast Foothills/Sacramento Valley-Northern Sacramento Valley- Shasta Lake Area / Northern Shasta County-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

High Wind Watch from late Tuesday night through Wednesday morning for Carquinez Strait and Delta-Central Sacramento Valley- Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley.

Winter Weather Advisory until 9 AM PST this morning for Motherlode.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chico Municipal Airport, CA3 mi65 minNW 2380.00 miMostly Cloudy and Windy52°F23°F32%1007.8 hPa
Oroville Municipal Airport, CA21 mi59 minNW 910.00 miFair54°F27°F35%1007.8 hPa

Link to 5 minute data for KCIC

Wind History from CIC (wind in knots)
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Last 24hrSE12SE7W8NW4--SE4NE5NW8NW7NW14NW11NW11NW14N12NW14
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1 day agoNW15NW14NW8--N9CalmCalmNW6N5CalmCalmCalmCalmCalmCalmE6SE5SE5SE13SE17SE15
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2 days agoE8SE8------E4SE6CalmCalmCalmNE5NE5NE4CalmN4CalmCalmCalmCalmNW8NW11NW11NW13NW17

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
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Mon -- 12:54 AM PST     0.03 feet Low Tide
Mon -- 04:55 AM PST     Moonset
Mon -- 05:43 AM PST     2.31 feet High Tide
Mon -- 07:16 AM PST     Sunrise
Mon -- 11:38 AM PST     1.02 feet Low Tide
Mon -- 02:27 PM PST     Moonrise
Mon -- 03:58 PM PST     3.16 feet High Tide
Mon -- 05:20 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.100.30.91.62.22.32.11.81.51.21.11.11.52.32.93.23.12.82.421.510.6

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
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Mon -- 04:34 AM PST     2.31 feet High Tide
Mon -- 04:54 AM PST     Moonset
Mon -- 07:16 AM PST     Sunrise
Mon -- 10:08 AM PST     1.02 feet Low Tide
Mon -- 02:28 PM PST     Moonrise
Mon -- 02:49 PM PST     3.16 feet High Tide
Mon -- 05:20 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.51.21.82.22.32.11.71.41.111.21.72.533.232.82.31.81.30.80.40.1

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station




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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.