Friday, April3, 2020
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Marine Weather and Tides
Boonville, 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 6:51AMSunset 7:40PM Friday April 3, 2020 4:42 PM PDT (23:42 UTC) Moonrise 1:35PMMoonset 3:27AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 218 Pm Pdt Fri Apr 3 2020
.small craft advisory in effect until midnight pdt tonight...
Tonight..NW winds 20 to 30 kt with occasional gusts up to 35 kt, diminishing to 10 to 20 kt with gusts up to 25 kt after midnight. Wind waves 4 to 8 ft. Mixed swell W 2 to 4 ft at 10 seconds and S around 2 ft at 15 seconds. A slight chance of rain after midnight.
Sat..SW winds 5 to 15 kt. Wind waves 3 to 4 ft. W swell 3 to 5 ft at 10 seconds and S around 2 ft at 15 seconds. Rain.
Sat night..SW winds 10 to 20 kt. Wind waves 3 to 4 ft. W swell 4 to 5 ft at 10 seconds and S around 2 ft at 14 seconds. Rain.
Sun..W winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 4 to 5 ft at 10 seconds and S around 2 ft at 13 seconds. Rain.
Sun night..W winds 10 to 15 kt. Wind waves 2 to 3 ft. W swell 4 to 5 ft at 9 seconds and S around 2 ft at 13 seconds. A chance of rain.
Mon..S winds 5 to 10 kt. Wind waves 1 to 2 ft. W swell 5 to 6 ft at 9 seconds and S around 2 ft at 13 seconds. A chance of rain.
Mon night..N winds 5 to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 9 seconds and S around 2 ft at 13 seconds.
Tue..NW winds up to 10 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft and S 2 to 3 ft.
Wed..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell around 7 ft and S 2 to 3 ft.
PZZ500 218 Pm Pdt Fri Apr 3 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Strong northwest winds will generate fresh and steep wind waves creating hazardous conditions for smaller vessels. Winds will then subside by early Saturday morning. A cold upper level low from the gulf of alaska will bring wet weather to the coastal waters and bays this weekend and next week. A moderate northwesterly swell will prevail through much of the forecast period.


7 Day Forecast for Marine Location Near Boonville, CA
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location: 38.89, -123.38     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 032134 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 234 PM PDT Fri Apr 3 2020

SYNOPSIS. Precipitation will spread across the region tonight into Saturday, resulting in beneficial rainfall across low elevations, and locally heavy snow across portions of the interior mountains. Additional showers are expected Sunday resulting in continued snow over the mountains, and possible small hail and thunder along the coast. Drier and warmer weather may develop during mid to late next week.

DISCUSSION. An upper disturbance was moving southeast across the NERN PAC during Friday afternoon. Cloud cover with that feature will increase over NWRN CA this evening, with a shield of rain spreading across the area late tonight. Upslope southerly winds over the Trinity Alps will aid in dynamically lowering freezing levels, which will favor locally heavy snow above 3500 feet in northern Trinity County. This will support a winter storm warning valid from 5 AM Saturday through 11 PM Sunday, with travel impacts expected at Scott Mountain Summit on Highway 3.

Otherwise, beneficial low-elevation rainfall will occur across the lowlands. Model guidance indicates weak destabilization will occur Saturday afternoon resulting in a modest threat for small hail and thunderstorms near the coast and inland across Mendocino and Lake Counties. Precipitation will become increasingly showery in nature going into Sunday as a colder upper low develops near the coast. Snow will subsequently continue over the interior mountains, with small hail and thunder possible near the coast, and also over interior Mendocino and Lake Counties.

The previously mentioned upper low is forecast to move east across the Lower Colorado River Valley by mid next week. Drier and milder weather will develop in its wake, and persist into the weekend.

JMG

AVIATION. Patchy stratus produced occasional MVFR ceilings at KACV this morning. Otherwise conditions were VFR across the region. Expect VFR conditions to continue to prevail through evening as Cigs above 4000 feet, but mostly mid to high clouds increase ahead of the next approaching system. Looking for rain to move into KCEC and KACV between 06z and 12z tonight and spread to inland terminals thereafter, bringing widespread MVFR CIGS with occasionally lower conditions possible. /TA/CB.

MARINE. Small craft winds and seas occurring over the southern inner waters this afternoon will quickly dissipate this evening as an area of low pressure approaches from the northwest. Winds are forecast to veer to westerly late tonight over the southern marine zones, and southerly over the northern zones. A zone of 20-30 kt southerlies are expected to progress east across the northern waters Saturday morning . thus a brief small craft advisory has been issued. Weaker winds are then expected Saturday night into Sunday, followed by strengthening northerlies early to mid next week. Otherwise, a mid period west-northwesterly swell is forecast to move through the waters Sunday and Monday.

JMG

EKA WATCHES/WARNINGS/ADVISORIES. CA . Winter Storm Warning from 5 AM Saturday to 11 PM PDT Sunday for CAZ107.

NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory from 3 AM to 7 AM PDT Saturday for PZZ450- 470.

Small Craft Advisory until 5 PM PDT this afternoon for PZZ455.



Visit us at https://www.weather.gov/eureka

Follow us on Facebook and Twitter at: https://www.facebook.com/NWSEureka https://www.twitter.com/NWSEureka

For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 18 mi54 min WNW 11 G 17 52°F 52°F1018.7 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 39 mi42 min NW 18 G 21 51°F 52°F1018.8 hPa (-1.8)46°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 44 mi42 min NW 25 G 31 51°F1017.4 hPa (-2.0)

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA20 mi46 minNW 9 G 1510.00 miFair62°F36°F38%1015.3 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hr----N8
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N8N6NE3SW3CalmCalmN4E3CalmCalmN3CalmNE5NE95NW9
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4N10N6N63NE3CalmCalmCalmCalmCalmCalmCalmNW3CalmCalmN3CalmCalm5------
2 days ago--NW10NW10
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N74N4N5N8NE6NE3N4N6N3N3N4NE5NE64NW8
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Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Fri -- 01:49 AM PDT     2.99 feet Low Tide
Fri -- 04:28 AM PDT     Moonset
Fri -- 06:55 AM PDT     Sunrise
Fri -- 07:10 AM PDT     5.30 feet High Tide
Fri -- 02:26 PM PDT     -0.27 feet Low Tide
Fri -- 02:36 PM PDT     Moonrise
Fri -- 07:41 PM PDT     Sunset
Fri -- 09:24 PM PDT     4.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.43.133.23.84.455.35.24.63.62.31.10.2-0.2-0.20.41.22.33.44.34.74.74.3

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Fri -- 03:00 AM PDT     0.00 knots Slack
Fri -- 04:28 AM PDT     Moonset
Fri -- 05:40 AM PDT     0.61 knots Max Flood
Fri -- 06:55 AM PDT     Sunrise
Fri -- 08:23 AM PDT     -0.00 knots Slack
Fri -- 11:40 AM PDT     -1.25 knots Max Ebb
Fri -- 02:36 PM PDT     Moonrise
Fri -- 03:38 PM PDT     0.00 knots Slack
Fri -- 06:46 PM PDT     1.07 knots Max Flood
Fri -- 07:41 PM PDT     Sunset
Fri -- 10:02 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.4-0.3-00.30.60.60.50.2-0.3-0.8-1.2-1.2-1.1-0.8-0.30.20.711.10.90.60-0.5

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 Eureka, CA (19,4,5,8)
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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.