Sunday, August9, 2020
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Marine Weather and Tides
Sea Ranch, 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 6:19AMSunset 8:16PM Sunday August 9, 2020 4:49 AM PDT (11:49 UTC) Moonrise 10:38PMMoonset 11:05AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 201 Am Pdt Sun Aug 9 2020
Today..S winds up to 10 kt. Wind waves 1 ft. NW swell 6 to 8 ft at 10 seconds.
Tonight..S winds up to 10 kt. Wind waves 1 ft. NW swell 6 to 8 ft at 12 seconds. Patchy fog.
Mon..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft at 12 seconds and S around 2 ft at 19 seconds.
Mon night..S winds around 5 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 11 seconds and S 2 to 3 ft at 18 seconds. Patchy fog.
Tue..S winds up to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 11 seconds and S 2 to 3 ft at 16 seconds. Patchy fog.
Tue night..W winds up to 10 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft at 11 seconds and S 2 to 3 ft at 16 seconds.
Wed..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. NW swell 5 to 7 ft and S 2 to 3 ft.
Thu..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft and S around 2 ft.
PZZ500 201 Am Pdt Sun Aug 9 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds will gradually diminish into this morning over the northern outer waters with generally light winds elsewhere. Hazardous seas conditions will persist over the northern outer waters into this evening. Locally breezy winds are expected this afternoon and evening over the northern san francisco bay near the golden gate and to the delta. Mixed seas will continue through the period with a short period northwest swell and a longer period southerly swell.


7 Day Forecast for Marine Location Near Sea Ranch, CA
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location: 38.76, -123.54     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 091128 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 428 AM PDT Sun Aug 9 2020

SYNOPSIS. Warmer temperatures are expected to continue through the remainder of the weekend, especially inland. Slightly cooler weather returns early next week.

DISCUSSION. As of 3:00 AM PDT Sunday . A weak upper low lies just off the central California coast while upper level highs cover the eastern Pacific and the southern United States. The marine layer has compressed to near 1000 ft this morning and there is less inland penetration of the low clouds. With the lower marine layer areas of fog can be expected along the coast through midmorning. Already getting reports of visibilities below 1 mile at Half Moon Bay and 1/2 mile at Watsonville. Easterly flow aloft around the upper low is bringing high clouds from the Sierras which are remnants of afternoon convection.

Temperatures will be a few degrees warmer today with highs ranging from the upper 60s to low 70s at the coast to the 90s inland. May hit 100 in some of the warmest locations. 500 mb heights will start to fall Monday as an upper level trough over British Columbia drops south and flattens the upper ridge. This will begin a cooling trend that will last into the middle of the week with temperatures returning to near normals by Tuesday and Wednesday.

A couple of things of interest to watch in the long range. The upper high over the south is forecast to shift west to Arizona by next weekend resulting in more significant warming inland. Also will be watching a tropical system off Mexico moving northwest during the week that could possibly bring some mid and high moisture into southern or central California by next weekend as it rotates around the upper high.

AVIATION. As of 04:28 AM PDT Sunday . for 12z TAFs. The marine layer has compressed some compared to yesterday down to about 1200 ft AGL per the Fort Ord Profiler. Satellite imagery shows stratus along the coast, through the Golden Gate Gap, and around the Monterey Bay. Conditions are mixed from VFR in the North/East Bay to VLIFR at KMRY. Patchy IFR/LIFR conditions this morning due to combination of low cigs/vis. Expecting VFR conditions between 15z- 18z depending on location. Low clouds anticipated to return this evening, but not expected to be widespread. Light winds this morning turning onshore this afternoon around 15 kt.

Vicinity of KSFO . VFR prevailing with intermittent IFR conditions this morning as satellite shows stratus attempting to fill into the South SF Bay. Expecting clearing around 15z-16z later this morning. Low clouds will return overnight. NE winds late this morning before switching back to onshore at around 15 to 20 kt.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . IFR/LIFR with patchy fog until about 15z-16z before cigs lift. VFR conditions expected by late this morning/early this afternoon before low clouds are forecast to return again this evening.

MARINE. as of 02:01 AM PDT Sunday . Gusty northwest winds will gradually diminish into this morning over the northern outer waters with generally light winds elsewhere. Hazardous seas conditions will persist over the northern outer waters into this evening. Locally breezy winds are expected this afternoon and evening over the northern San Francisco Bay near the Golden Gate and to the Delta. Mixed seas will continue through the period with a short period northwest swell and a longer period southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . SF Bay from 3 PM



PUBLIC FORECAST: W Pi AVIATION: AS MARINE: AS

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 14 mi56 min E 4.1 G 6 51°F 53°F1013.4 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 37 mi30 min NNE 1.9 G 3.9 52°F 52°F1013.1 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 40 mi30 min SSE 5.8 G 12 53°F1012.8 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA32 mi54 minN 010.00 miFair64°F53°F68%1012 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmSE3CalmE3E3S5SE8SE85SW76W85N7SE3SE6S4S5S7CalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalm33E4NW8NW10
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2 days agoCalmCalmCalmN4N443N10NW13NW9
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Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Sun -- 03:03 AM PDT     4.47 feet High Tide
Sun -- 06:23 AM PDT     Sunrise
Sun -- 09:29 AM PDT     1.46 feet Low Tide
Sun -- 12:05 PM PDT     Moonset
Sun -- 03:55 PM PDT     5.24 feet High Tide
Sun -- 08:16 PM PDT     Sunset
Sun -- 10:36 PM PDT     2.10 feet Low Tide
Sun -- 11:38 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.23.84.34.54.33.93.22.51.81.51.51.92.73.64.455.254.53.83.12.52.22.1

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Sun -- 01:16 AM PDT     0.64 knots Max Flood
Sun -- 04:15 AM PDT     -0.00 knots Slack
Sun -- 06:23 AM PDT     Sunrise
Sun -- 07:06 AM PDT     -0.87 knots Max Ebb
Sun -- 10:38 AM PDT     0.00 knots Slack
Sun -- 12:05 PM PDT     Moonset
Sun -- 01:38 PM PDT     0.74 knots Max Flood
Sun -- 04:50 PM PDT     -0.00 knots Slack
Sun -- 07:38 PM PDT     -0.87 knots Max Ebb
Sun -- 08:16 PM PDT     Sunset
Sun -- 11:32 PM PDT     0.00 knots Slack
Sun -- 11:38 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.60.40.1-0.3-0.7-0.9-0.8-0.5-0.20.10.50.70.70.60.3-0.1-0.5-0.8-0.9-0.7-0.4-0.2

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 San Francisco/Monterey Bay Area, CA (7,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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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.