Tuesday, May26, 2020
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Marine Weather and Tides
Chico, 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 5:42AMSunset 8:26PM Tuesday May 26, 2020 11:01 AM PDT (18:01 UTC) Moonrise 8:00AMMoonset 11:20PM Illumination 21% Phase: Waxing Crescent; Moon at 5 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 260930 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 230 AM PDT Tue May 26 2020

Synopsis. High pressure will continue to build over the region resulting in hot weather. The hottest days will be through Thursday with moderate to high heat risk expected. A pattern change is expected on Friday, which will lead to cooler temperatures and chances of mountain showers and thunderstorms over the weekend.

DISCUSSION. Skies are clear across the region early this morning except for a few high clouds near the OR/CA border moving around the periphery of the strong high pressure. Winds remain generally light except for a weak Delta Breeze (13 kts at Travis AFB). Current temps are warmer compared to 24 hours ago across most of the area and generally range from the mid 40s in the colder mountain valleys, to the upper 60s to upper 70s across the Central Valley.

Little change expected through Thursday as strong high pressure covers the region. Max temperatures in the Central Valley will mainly be in the 100-105 degree range with a few daily record highs possible. Overnight lows will also be very mild, generally in the mid 60s to lower 70s through the Central Valley. Thus, widespread moderate to high heat risk will continue with an Excessive Heat Warning remaining in effect through 7PM Thursday for elevations below 3500 feet.

With the prolonged heat in the forecast, the general population should take precautions to prevent heat related illnesses given the potential for moderate to very high heat risk. Stay hydrated, limit outdoor activities, and check on sensitive groups.

If you plan on enjoying the outdoors, be sure to practice heat safety and a cold water safety if visiting area waterways. Area waterways continue to run very cold and fast, and precautions should be taken if heading to the water.

General consensus in medium range models is that the developing pattern change over the eastern Pacific late in the week will lift the cutoff low, presently parked west of 130W well off the coast of Baja and SoCal, northeastward toward NorCal late in the week leading to a cooldown and a return of unsettled weather.

EXTENDED DISCUSSION (Saturday THROUGH Tuesday). 558 DM closed upper low approaches the Central CA coast early Saturday, increasing thunderstorm potential over interior NorCal. Models differ on how quickly to progress low northward with GFS-20 more progressive. Ensemble solutions do suggest the feature weakening as it lifts to the north. Elevated instability progs showing highest modified TT's north of a KUKI-KOVE-KBLU line by midday Saturday. Increased cloud cover and precipitation potential, along with synoptic cooling associated with the low will result in high temperatures Saturday 10 to 25 degrees lower than Friday. Upper 70s to mid 80s expected in the Central Valley with mainly 50s to 70s for the mountains and foothills.

Closed upper low weakens to trough as it lifts into the PacNW early Sunday. Long wave trough position then moves to the West Coast and lingers into early next week. Embedded disturbances moving through will keep a threat of showers through the remainder of the extended forecast period. Best chances for measurable precipitation will be over the foothills and mountains. Below normal high temperatures continue Sunday and Monday, returning to near normal Tuesday. PCH

AVIATION. VFR conditions over Interior NorCal the next 24 hours with surface winds generally below 12 knots.

STO WATCHES/WARNINGS/ADVISORIES. Excessive Heat Warning until 7 PM PDT Thursday for Carquinez Strait and Delta-Central Sacramento Valley-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Southern Sacramento Valley.

Excessive Heat Warning until 7 PM PDT Thursday for Northern San Joaquin Valley.

Excessive Heat Warning from 7 AM to 7 PM PDT Thursday for Shasta Lake Area / Northern Shasta County.




Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chico Municipal Airport, CA3 mi75 minN 080.00 miMostly Cloudy82°F55°F40%1012.2 hPa
Oroville Municipal Airport, CA21 mi69 minVar 510.00 miFair87°F55°F34%1012.1 hPa

Link to 5 minute data for KCIC

Wind History from CIC (wind in knots)
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Last 24hr5NW356S10S8SE6S8--CalmNE6CalmNE6CalmCalmCalmN4CalmCalmCalmCalmCalmCalmSE4
1 day agoNW7NW11NW12W12
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W10W6NW12NW7--CalmNE5CalmE3CalmCalmCalmCalmCalmCalmCalmCalmW4N55
2 days agoW12
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W15W15W12W12W9N9----NW3NE3CalmCalmE7NE3CalmCalmCalmCalmCalmNW5Calm5W13

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Tue -- 05:14 AM PDT     0.90 feet Low Tide
Tue -- 05:45 AM PDT     Sunrise
Tue -- 09:02 AM PDT     Moonrise
Tue -- 09:12 AM PDT     3.14 feet High Tide
Tue -- 06:37 PM PDT     -0.20 feet Low Tide
Tue -- 08:20 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.221.61.310.911.72.63.13.12.82.31.81.20.70.3-0-0.2-0.20.10.81.52

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Tue -- 03:44 AM PDT     0.90 feet Low Tide
Tue -- 05:46 AM PDT     Sunrise
Tue -- 08:03 AM PDT     3.14 feet High Tide
Tue -- 09:03 AM PDT     Moonrise
Tue -- 05:07 PM PDT     -0.20 feet Low Tide
Tue -- 08:20 PM PDT     Sunset
Tue -- 11:06 PM PDT     2.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.51.210.91.21.92.83.132.72.21.610.50.1-0.1-0.2-0.10.411.622.2

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 (14,3,4,5)
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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.