Thursday, January23, 2020
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Marine Weather and Tides
Fort Bragg, 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 7:25AMSunset 5:24PM Thursday January 23, 2020 8:15 AM PST (16:15 UTC) Moonrise 6:47AMMoonset 4:23PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 237 Am Pst Thu Jan 23 2020
.small craft advisory in effect from late tonight through late Friday night...
Today..S winds 5 to 15 kt. Waves W 8 ft at 12 seconds...and N 3 ft at 21 seconds.
Tonight..SE winds 5 to 15 kt. Waves W 10 ft at 12 seconds... And W 8 ft at 21 seconds. Rain.
Fri..S winds 5 to 10 kt. Waves W 8 ft at 12 seconds...and W 12 ft at 18 seconds. Slight chance of showers.
Fri night..SE winds 5 to 15 kt. Waves sw 3 ft at 6 seconds... And W 13 ft at 17 seconds.
Sat..S winds 10 to 15 kt. Waves S 6 ft at 7 seconds...and W 9 ft at 15 seconds.
Sun..SW winds 5 to 10 kt. Waves sw 2 ft at 5 seconds...and W 10 ft at 20 seconds.
Mon..S winds 5 to 10 kt. Waves W 15 ft at 16 seconds.
PZZ400 237 Am Pst Thu Jan 23 2020
Synopsis for northern california waters..Gusty south winds will persist over the outer waters north of cape mendocino through Thursday evening. Otherwise, another westerly swell will move through the waters Friday into the weekend.


7 Day Forecast for Marine Location Near Fort Bragg, CA
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location: 39.42, -123.8     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 231349 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 535 AM PST Thu Jan 23 2020

SYNOPSIS. A few light showers will be possible today. Otherwise, mostly dry weather will continue to prevail today. A trough will then move over the area tonight, providing another round of light to moderate rain. Mostly dry conditions are expected to redevelop on Friday in advance of another front that promises to bring widespread rain, possibly heavy, this weekend.

DISCUSSION. A period of relatively dry weather is expected through most of today before the next front brings another round of light to moderate rain tonight. Friday should also be mostly dry in the wake of a transient shortwave trough, though a few showers may linger in the morning. Rain with the warm front Friday night has slowed down. Significant rain may not develop until midday Saturday. The models definitely indicate breaks in steady rain as well. In fact, the NAM does not have as much rain compared to ECMWF and GFS. It still outside the range of the higher resolution models.

Looking at the GEFS and NAEFS integrated water vapor transport values, this next frontal system certainly looks like it will provide greater amounts of rain with GEFS-based mean IVT values around 250-500 kg/m/s. When exactly will heavy rain occur and for how long are still not completely certain. GEFS probabilities of an inch or more in 6 hours continues to hone in on the 12 hour period from 4 PM Saturday to 4 AM Sunday. Also, the duration of the heavy rain will be limited in this progressive flow. Heavy rain will be possible late Saturday afternoon and overnight, however confidence remains low there will be any significant flooding or hydrological impacts. It is too uncertain with too many unknown variables, such as snow melt, to hoist a flood watch or hydrologic outlook. A weather story graphic continues to be the best route at this time to increase awareness.

Current indications are for snow levels to remain high and above all NW CA passes through Saturday night, then fall to 4000-5000 feet after trough passage on Sunday. Both the GFS and ECMWF show a marked drop off in the precip during the day on Sunday across most of NW Cal. The exception will be across the far NW portion of the forecast area (Del Norte and far northern Humboldt) as another shortwave trough heads into the Pacific NW. The over- running precip with this shortwave may be sufficient to warrant winter weather products for the high mountain passes; specifically South Fork and Scott Mountains.

Long wave pattern changes very little early to mid next week. Transient fronts will move toward the west coast from time to time. This will likely result in periods of rain and high mountain snow. The ECMWF indicates another wet system possibly impacting the North coast with several inches of rain early next week. The GFS was not quite as bullish with the rain. There is still a wide spread in the ensemble members to have much confidence in the overly wet ECWMF model at this time.

AVIATION. Light southerly winds and VFR conditions are expected to continue along the northern coast through much of today. Southerly winds then slowly increase this evening north of Cape Mendocino, strongest across Del Norte county, accompanied by lowering ceilings and rain. Conditions are expected to improve early Friday morning as the pulse dissipates and moves farther inland. To the south, low clouds which have formed overnight should mix out this morning, revealing a VFR day for most of Mendocino county. Shower activity may increase late tonight for Mendocino, with scattered showers and impacted ceilings possible early tomorrow morning. /TDJ

MARINE. Light to moderate southerly winds increase across the waters today and peak tonight, strongest in the northern outers. Winds rapidly weaken tomorrow morning, but should remain relatively southerly and fluctuate around low- end SCY levels for the foreseeable future as a series of weak upper- level shortwave troughs pass overhead, with a persistent local wind speed maximum in the northern outer waters with each passing pulse.

Short period seas are expected to increase across the northern waters today then rapidly diminish early tomorrow morning. Short period southerly seas then rebuild in the northern outers in response to more southerlies tomorrow evening, and keep a persistent, pulsing local maximum in this zone as each of a series of systems approaches the coast for the next week or so. A long period west swell is expected to fill in tonight, bringing seas above 10 ft across all zones through at least tomorrow night. /TDJ

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory from 9 PM this evening to 9 PM PST Friday for PZZ450.Small Craft Advisory until 3 AM PST Saturday for PZZ470. Small Craft Advisory from 3 AM Friday to 3 AM PST Saturday for PZZ455. Small Craft Advisory from 9 PM this evening to 3 AM PST Saturday for PZZ475.



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 16 mi35 min SE 3.9 G 5.8 52°F 1023.2 hPa51°F
ANVC1 - 9416841 - Arena Cove, CA 35 mi51 min E 7 G 7 46°F 53°F1023.4 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA37 mi79 minN 00.25 miFog40°F39°F97%1024.2 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmW3CalmW5W3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoS8S11
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S7S8S6S8CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoE3NW3CalmCalmSE4SE7S7SE8CalmS3CalmS8SE5S6SE8S6S9S7S76SE6S8S9S9

Tide / Current Tables for Noyo River, California
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Noyo River
Click for Map
Thu -- 03:39 AM PST     3.03 feet Low Tide
Thu -- 06:47 AM PST     Moonrise
Thu -- 07:29 AM PST     Sunrise
Thu -- 09:24 AM PST     6.63 feet High Tide
Thu -- 04:23 PM PST     Moonset
Thu -- 04:37 PM PST     -0.73 feet Low Tide
Thu -- 05:24 PM PST     Sunset
Thu -- 11:35 PM PST     5.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.84.23.53.13.13.54.25.266.66.55.84.62.91.30.1-0.6-0.7-0.20.81.93.24.45

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Thu -- 01:24 AM PST     -0.61 knots Max Ebb
Thu -- 04:26 AM PST     0.00 knots Slack
Thu -- 06:47 AM PST     Moonrise
Thu -- 07:17 AM PST     0.83 knots Max Flood
Thu -- 07:29 AM PST     Sunrise
Thu -- 10:02 AM PST     -0.00 knots Slack
Thu -- 01:24 PM PST     -1.49 knots Max Ebb
Thu -- 04:24 PM PST     Moonset
Thu -- 05:24 PM PST     Sunset
Thu -- 05:25 PM PST     0.00 knots Slack
Thu -- 08:35 PM PST     1.18 knots Max Flood
Thu -- 11:47 PM PST     -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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-0.4-0.6-0.6-0.5-0.20.20.60.80.80.50-0.6-1.2-1.5-1.5-1.2-0.9-0.30.40.91.11.20.90.4

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 (11,2,3,4)
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Ground Weather Radar Station Eureka, 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.