Thursday, October1, 2020
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Marine Weather and Tides
Lemon Hill, 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 7:01AMSunset 6:49PM Thursday October 1, 2020 4:08 PM PDT (23:08 UTC) Moonrise 6:11PMMoonset 5:43AM Illumination 100% Phase: Full Moon; Moon at 15 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- 152 Pm Pdt Thu Oct 1 2020
Tonight..SW winds 5 to 15 kt. Hazy with smoke.
Fri..SW winds 5 to 15 kt. Haze and smoke.
Fri night..W winds 5 to 15 kt. Haze and smoke.
Sat..SW winds 5 to 15 kt. Hazy.
Sat night..SW winds 5 to 15 kt.
Sun..SW winds 5 to 15 kt.
Sun night..SW winds 5 to 10 kt.
Mon..SW winds up to 10 kt.
Tue..SW winds up to 10 kt.
PZZ500 152 Pm Pdt Thu Oct 1 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northerly winds will continue Thursday into Friday over a mixed and generally light swell. Locally stronger winds will occur over the near shore waters south of point sur. By Friday night and Saturday northwest winds will increase as high pressure over land begins to break down. Some southerly swells may approach later this weekend as energy from hurricane marie propagates northward.


7 Day Forecast for Marine Location Near Lemon Hill, CA
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location: 38.52, -121.49     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 012118 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 218 PM PDT Thu Oct 1 2020

SYNOPSIS. Above normal temperatures and very dry conditions will be observed through Friday. Areas of wildfire smoke will impact interior NorCal for the next couple of days. Continued dry weather and a slight cooling trend is expected for the weekend, although temperatures remain above normal.

DISCUSSION. Visible satellite imagery reveals yet another smoky afternoon for much of central and northern California as the region's wildfires continue to burn. In addition to the smoke, temperatures will soar to near-record levels for many communities by the time the afternoon wraps up. The October 1st record high for Downtown Sacramento is 101 deg F, and we're presently forecasting a high of 100 deg F. Redding, Red Bluff, Stockton, and Modesto will all similarly be within a few degrees of their respective daily record highs. For comparison, the normal October 1st high temperature for Sacramento is 84 deg F. A Heat Advisory is in effect for the Delta region through this evening as areas of high heat risk impact communities such as Vacaville and Fairfield.

Another stat worth mentioning: today Downtown Sacramento tied the record for the most number of 90 deg F days in a calendar year, which is 110 days (first set in 1984). While 90 deg F may not be considered an extremely hot threshold for Sacramento, it is certainly a stat worth acknowledging and recognizing. Over the present climatological normal period (1981 to 2010), the mean number of 90 deg F days per year for Downtown Sacramento is around 86. Meteorological summer (June-July-August) was the hottest on record for Downtown Sacramento, and the month of September was also the hottest on record for the city.

In addition to the above normal temperatures, offshore pressure gradients will allow dry northerly to easterly winds to continue through Friday. This will continue to bring locally breezy conditions to wind-prone areas (e.g., Jarbo Gap) along with moderate to poor overnight relative humidity recoveries.

Ridge begins to weaken over the weekend and into early next week. This will allow temperatures to moderate back to the middle 90s for Saturday, and 80s to low 90s by Sunday. That said, continued wildfire smoke may prevent afternoon highs from realizing their fullest potential.

// Rowe

EXTENDED DISCUSSION (Monday THROUGH Thursday). GEFS and EC ensemble in general agreement weakening the persistent West Coast ridge and shifting it east by the middle of next week. Pattern will remain dry for NorCal with temperatures still around 10 degrees above average early in the week, returning to only slightly above average by Thursday.

AVIATION. Widespread MVFR with local IFR conditions due to wildfire smoke expected across the Central Valley next 24 hours. Surface wind gusts generally under 12 kts except local north to east winds for the northern Sierra where gusts may exceed 20kt.

STO WATCHES/WARNINGS/ADVISORIES. Heat Advisory until 8 PM PDT this evening for Carquinez Strait and Delta.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 36 mi84 min S 2.9
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 39 mi51 min WNW 1.9 G 2.9 90°F 1013.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 43 mi51 min NE 5.1 G 5.1 86°F 70°F1013.1 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 47 mi51 min NE 2.9 G 4.1 82°F 70°F1013.5 hPa
UPBC1 47 mi51 min ENE 2.9 G 2.9
RCMC1 - 9414863 - Richmond, CA 64 mi57 min ESE 2.9 G 4.1 72°F 64°F1013.5 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento Executive Airport, CA1 mi76 minW 33.00 miHaze Smoke92°F45°F20%1013.3 hPa
Sacramento, McClellan Airfield Airport, CA11 mi74 minN 04.00 miFair with Haze93°F44°F19%1013.2 hPa
Sacramento Mather Airport, CA11 mi3.4 hrsW 33.00 miSmoke Haze88°F44°F22%1014.9 hPa
Sacramento International Airport, CA14 mi76 minWSW 43.00 miHaze Smoke92°F51°F25%1013.1 hPa
University Airport, CA16 mi69 minNE 54.00 miFair93°F44°F19%1013.5 hPa

Link to 5 minute data for KSAC

Wind History from SAC (wind in knots)
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Last 24hrNW8NW6CalmCalmCalmSW3CalmSW3CalmSE3S4E3CalmCalmCalmCalmCalmCalmCalmCalmCalmW3W3Calm
1 day agoCalmNW3CalmCalmSW5S3CalmCalmCalmCalmCalmW3W3CalmSW3CalmN5CalmNW5NW6NW8N8NW10NW10
2 days agoN7N5CalmCalmCalmSW3CalmSE3SE3SE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS43Calm

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Thu -- 03:05 AM PDT     0.35 feet Low Tide
Thu -- 06:43 AM PDT     Moonset
Thu -- 07:02 AM PDT     Sunrise
Thu -- 07:23 AM PDT     2.62 feet High Tide
Thu -- 02:06 PM PDT     Full Moon
Thu -- 03:20 PM PDT     0.15 feet Low Tide
Thu -- 06:47 PM PDT     Sunset
Thu -- 07:11 PM PDT     Moonrise
Thu -- 08:03 PM PDT     2.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.20.80.50.40.61.42.12.62.62.321.510.60.30.20.30.91.82.52.72.62.31.9

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Thu -- 01:35 AM PDT     0.35 feet Low Tide
Thu -- 06:14 AM PDT     2.62 feet High Tide
Thu -- 06:43 AM PDT     Moonset
Thu -- 07:02 AM PDT     Sunrise
Thu -- 01:50 PM PDT     0.15 feet Low Tide
Thu -- 02:06 PM PDT     Full Moon
Thu -- 06:47 PM PDT     Sunset
Thu -- 06:54 PM PDT     2.75 feet High Tide
Thu -- 07:11 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.40.40.91.62.32.62.62.31.81.30.90.50.20.20.51.222.62.72.62.21.81.3

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
Ground Weather Radar Station Sacramento, CA
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weather_mapweather_map weather_map


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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.