Saturday, January18, 2020
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Marine Weather and Tides
Brooktrails, 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 7:27AMSunset 5:18PM Saturday January 18, 2020 7:26 AM PST (15:26 UTC) Moonrise 1:31AMMoonset 12:36PM Illumination 41% Phase: Third Quarter Moon; Moon at 23 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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PZZ455 Cape Mendocino To Pt Arena Out 10 Nm- 245 Am Pst Sat Jan 18 2020
.small craft advisory in effect through Sunday afternoon...
Today..SE winds 15 to 25 kt. Waves S 6 ft at 7 seconds...and W building to 6 ft at 12 seconds.
Tonight..SE winds 5 to 10 kt. Waves W 12 ft at 15 seconds.
Sun..S winds 5 kt. Waves W 11 ft at 15 seconds.
Sun night..SE winds 5 to 10 kt. Waves W 9 ft at 13 seconds.
Mon..S winds 10 to 20 kt. Waves S 6 ft at 8 seconds...and W 11 ft at 18 seconds.
Tue..SW winds 5 to 10 kt. Waves W 18 ft at 16 seconds.
Wed..E winds 5 to 10 kt. Waves W 11 ft at 13 seconds.
PZZ400 245 Am Pst Sat Jan 18 2020
Synopsis for northern california waters..Southerly winds and short period seas will remain elevated today as a front approaches the outer waters. Southerly winds will ease up tonight as a westerly swell builds, resulting in hazardous seas that will persist through the day on Sunday. Another frontal system will likely bring strong southerly winds and steep seas on Monday, followed by large westerly swell on Tuesday.


7 Day Forecast for Marine Location Near Brooktrails, CA
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location: 39.46, -123.35     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 181306 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 506 AM PST Sat Jan 18 2020

SYNOPSIS. A weak cold front will bring some gusty southerly winds to parts of northwest California today, along with a round of mainly light rainfall. High pressure will allow for dry weather and even some filtered sun on Sunday with milder temperatures. Another cold front will bring rain and high elevation snow by Monday night and Tuesday.

DISCUSSION. Another frontal system will approach the area today, bringing mostly light rain near and N of Cape Mendocino. Rain amounts from this system will average around a third of an inch across Del Norte County with totals closer to an inch on S facing terrain. Snow levels are currently running around 3000 ft with some lower snow levels across far interior zones. Snow levels are expected to rapidly climb through the day and remain high through this precipitation event. Snow accumulations will be light, with perhaps 1 to 2 inches across the highest terrain of Del Norte County. Winds will be gusty out of the SE to S along the Redwood Coast and the N interior terrain, but wind speeds are expected to decrease into the afternoon.

The cold front will weaken as it makes its way toward the area before stalling and eventually retreating. Sunday looks to be mostly dry with a broad ridge and slightly warmer temperatures. Low cloudiness will linger early in the morning, with increasing mid and high cloudiness through the day. However, there may be a period of partly cloudy skies in between, with filtered sun later in the day.

A more significant storm system is forecast to approach the area from the NW late Monday, but most precipitation is expected to hold off until late afternoon or evening. Precipitation will be more widespread, ranging from around 2 inches in the Del Norte mountains to about half an inch over far southern Mendocino County. Snow levels with this system will start out around 5000 ft but will drop below 4000 ft by Tuesday night. As a result, some decent high elevation snow accumulations are expected, with over one foot of snow possible in the highest terrain of N Trinity and E Del Norte counties.

An active but progressive weather pattern will continue to result in frequent bouts of precipitation in the coming week, but there are indications that an upper ridge may develop over the W coast late in the week. /SEC

AVIATION. A front has been approaching overnight, generating gusty S-SE winds at the coastal terminals. Conditions have been VFR through the night except across the interior valleys where fog and low clouds have formed in the lighter wind regime. There will be a potential for low wind shear or low level turbulence at both KCEC and KACV today as winds 1500-2000 ft above ground level reach 30 to 40kt. Meanwhile, fog and low clouds in the interior valleys should dissipate by this afternoon. Otherwise, expecting mostly VFR cloud layers today with periods of MVFR possible in light rain at the coastal terminals.

MARINE. Seas continued to trend downward or hold steady through night at all the nearshore buoys, even though winds were running around 15 to 25 kt. ASCAT pass from Friday evening indicated higher winds near 30 kt farther offshore, with 35kt barbs just north of Pt St George in Oregon waters. We still have a gale warning in effect for the outer waters north of Cape Mendocino today. SSE winds will trend downward this evening as the front dissipates.

Steep seas are forecast to build today as southerlies persist offshore. Steep seas around 10 to 12 feet can be expected in the northern outer waters through this evening. Seas for the inner waters should build as well and satisfy small craft advisory steepness criteria this afternoon.

The main marine hazard, once the winds and wind waves subside, will be a westerly swell that will build to 10 to 12 ft at 15 seconds tonight. Seas will likely remain elevated and hazardous through Sunday before subsiding in advance of the next front. This next frontal system will likely bring another round of robust south winds and steep wind waves on Monday, followed by a large westerly swell on Tuesday. The swell may pose a beach/surf hazard on Tuesday.

BEACH HAZARDS. Large W swell is forecast to build across the waters late Tuesday. As a result, dangerous surf conditions are possible with surf heights over 20 ft. /SEC

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 3 PM Sunday for PZZ450-455-475. Gale Warning until 4 PM this afternoon for PZZ470.

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
46014 - PT ARENA - 19NM North of Point Arena, CA 37 mi37 min SE 9.7 G 14 51°F 53°F5 ft1025.8 hPa45°F
ANVC1 - 9416841 - Arena Cove, CA 42 mi63 min 44°F 52°F1026.3 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA23 mi91 minN 01.00 miFog/Mist38°F37°F97%1027 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmSW3CalmCalmCalmCalmCalmCalmN3NW3NW3CalmCalmCalmCalmN3CalmCalmCalmCalmSW3W3CalmCalm
1 day agoW5NW3NW3CalmN33N3SE5N5N3NW4N6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoS3S4CalmCalmCalmS4CalmN6CalmS7S9S8S9
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Tide / Current Tables for Noyo River, California
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Noyo River
Click for Map
Sat -- 01:32 AM PST     Moonrise
Sat -- 05:24 AM PST     6.29 feet High Tide
Sat -- 07:32 AM PST     Sunrise
Sat -- 12:24 PM PST     0.90 feet Low Tide
Sat -- 12:37 PM PST     Moonset
Sat -- 05:18 PM PST     Sunset
Sat -- 06:35 PM PST     4.16 feet High Tide
Sat -- 11:47 PM PST     2.17 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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22.73.84.85.76.26.25.64.63.42.21.30.911.42.12.93.64.14.13.83.32.72.3

Tide / Current Tables for Fort Bragg Landing, California
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Fort Bragg Landing
Click for Map
Sat -- 01:32 AM PST     Moonrise
Sat -- 05:25 AM PST     6.19 feet High Tide
Sat -- 07:32 AM PST     Sunrise
Sat -- 12:16 PM PST     0.80 feet Low Tide
Sat -- 12:37 PM PST     Moonset
Sat -- 05:18 PM PST     Sunset
Sat -- 06:36 PM PST     4.06 feet High Tide
Sat -- 11:39 PM PST     2.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.92.73.74.85.66.16.15.54.43.221.20.80.91.42.12.93.6443.73.22.62.2

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 Eureka, CA (10,2,3,4)
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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.