Thursday, April2, 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 6:52AMSunset 7:39PM Thursday April 2, 2020 10:51 AM PDT (17:51 UTC) Moonrise 12:26PMMoonset 2:43AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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- 826 Am Pdt Thu Apr 2 2020
.small craft advisory in effect through late tonight...
Today..NW winds 15 to 25 kt. Waves N 8 ft at 7 seconds.
Tonight..N winds 15 to 25 kt. Waves N 8 ft at 7 seconds.
Fri..NW winds 10 to 20 kt. Waves N 6 ft at 6 seconds...and nw 2 ft at 12 seconds.
Fri night..NW winds 10 to 15 kt. Waves N 5 ft at 5 seconds... And S 2 ft at 15 seconds.
Sat..S winds 5 to 10 kt. Waves sw 5 ft at 7 seconds...and W 5 ft at 12 seconds.
Sun..NW winds 5 to 10 kt. Waves W 6 ft at 9 seconds. Slight chance of tstms.
Mon..NW winds 5 to 10 kt. Waves nw 7 ft at 9 seconds.
PZZ400 826 Am Pdt Thu Apr 2 2020
Synopsis for northern california waters..Northerly winds are forecast to strengthen once again today, peaking this afternoon and evening. Short period, locally generated seas will dominate for the next few days, slowly weakening into the weekend. Highest winds and seas will be south of cape mendocino.


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 021133 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 433 AM PDT Thu Apr 2 2020

SYNOPSIS. Pleasant weather is expected across the region through Friday. Thereafter, a fast moving storm system will impact northwest California Friday night into Saturday resulting in a period of showery weather. A cold storm system is then forecast to move across the region Sunday and Monday. Locally heavy mountain snow will be possible along with isolated hail showers near the coast.

DISCUSSION. A chilly airmass combined with clear skies has allowed temperatures to drop to near or below freezing this morning across much of the area. A few of the northern valleys are seeing some clouds and have stayed slightly warmer. This afternoon mainly clear skies and temperatures warming into the low 60s inland with mid 50s along the coast. There may be a very light shower or two near the Oregon border this afternoon, but very little coverage is expected. Tonight temperatures are expected to be slightly warmer, but will still likely be near or slightly above freezing. There may be a few more clouds around in the north which might keep temperatures slightly warmer than the current forecast.

Friday clouds are expected to increase as a fast moving system brings starts to approach the area. Friday night into Saturday morning a compact system brings a frontal boundary across the area. This is expected to bring a quick shot of rain and snow to the area. Most areas are expected to see a quarter to a half inch of rain with local amounts up to an inch in the terrain favored areas. Snow levels in most areas are expected to quickly rise to over 5,000 feet, however, in eastern Trinity county they may remain as low as 3,000 feet with the cold air trapped in the valley. This is only expected to bring a few inches of snow since the QPF amounts are not all that high. Confidence is low on the exact snow levels and this will need to be watched.

Saturday afternoon and and evening the upper level trough moves overhead bringing showers to the area. The models are not in good agreement on how much instability there will be and if the coldest air will line up with the peak heating of the day. There is the potential for some thunder, but not enough to add it to the forecast yet. There may be some small hail, but it is not expected to be cold enough for it to widely accumulate. Snow levels will be around 4,000 feet in most of the area, but may remain closer to 3,000 feet in eastern Trinity county.

Saturday night there looks to be a break before the next upper level low moves in on Sunday. A front will bring a period of steady rain followed by widespread showers as the colder air slowly moves into the area. This system is expected to be colder than the previous one. Models are showing decent instability in the afternoon so have added thunderstorms to the forecast. Snow levels with this system are expected to be 2,500 to 3,000 feet which could bring snow to many of the highway passes. Models are in decent agreement on this system, but it is still the type of system that could shift slightly and the resulting weather would be significantly different. Late Sunday night into Monday morning there may be a lull in the showers, but these are expected to pick up again over the inland areas in the afternoon. There is the potential for additional thunderstorms as well. Tuesday and Wednesday models have the upper level low slowly drifting to the south of the area. There are some discrepancies in how fast this will drop to the south and therefore how much showers will linger. Chilly nights are expected with the cool airmass aloft and freezing temperatures are likely if the valleys remain clear. MKK

AVIATION. VFR conditions are expected to continue the area today, with gusty northerlies along the coast and occasional passing mid- level clouds. Winds weaken later tonight, and there is a chance of stratus development tonight in the Humboldt Bay region, potentially bringing MVFR ceilings to KACV overnight. If these clouds develop, they should mix out with daytime heating on Friday morning. /TDJ

MARINE. Northerly winds and short period seas will continue across all zones today, and energy from the persistent mid- period NW swell continues to linger this morning. Wind speeds and associated short- period wave generation are expected to be see a mild pulse in strength this afternoon downwind of Cape Mendocino, in a relatively tight band centered about 10 to 20 miles offshore of the Mendocino coast, before significantly weakening tonight. Localized gusts to 35 kt are possible within the core, extending from as far north as Rockport southward past Pt. Arena. Wind speeds then linger around SCY levels in this region through Friday afternoon before falling apart overnight on Friday.

Northerlies across all zones break down Friday night, turning to southerly on Saturday as another system approaches the coast. Seas should continue to be dominated by locally generated short- period waves through the rest of this week, until a small, mid- period west swell potentially moves in this weekend. /TDJ

EKA WATCHES/WARNINGS/ADVISORIES. CA . Frost Advisory until 9 AM PDT this morning for CAZ101-103-109.

Freeze Warning until 9 AM PDT this morning for CAZ102-104>106- 110>115.

NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 3 AM PDT Friday for PZZ455.

Small Craft Advisory until 9 AM PDT Friday 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 mi161 min N 16 G 19 49°F 52°F1020.9 hPa44°F
ANVC1 - 9416841 - Arena Cove, CA 35 mi183 min NW 4.1 G 7 46°F 51°F1020.7 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA37 mi55 minNNW 310.00 miFair47°F32°F56%1020.7 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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4N10N6N63NE3CalmCalmCalmCalmCalmCalmCalmNW3CalmCalmN3
1 day agoCalmCalmSE5Calm6W8--NW10NW10
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2 days ago45S5SE6SW6W6S5S6S5SE3SE4S4S6S6S4CalmCalmSE3CalmCalmCalmCalmCalmCalm

Tide / Current Tables for Noyo River, California
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Noyo River
Click for Map
Thu -- 12:44 AM PDT     3.32 feet Low Tide
Thu -- 03:42 AM PDT     Moonset
Thu -- 06:06 AM PDT     5.23 feet High Tide
Thu -- 06:56 AM PDT     Sunrise
Thu -- 01:26 PM PDT     Moonrise
Thu -- 01:34 PM PDT     0.07 feet Low Tide
Thu -- 07:40 PM PDT     Sunset
Thu -- 08:55 PM PDT     4.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.43.33.544.555.25.14.53.62.51.40.60.10.10.51.22.133.84.44.64.44

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Thu -- 01:48 AM PDT     0.00 knots Slack
Thu -- 03:42 AM PDT     Moonset
Thu -- 04:25 AM PDT     0.47 knots Max Flood
Thu -- 06:57 AM PDT     Sunrise
Thu -- 07:03 AM PDT     -0.00 knots Slack
Thu -- 10:30 AM PDT     -1.13 knots Max Ebb
Thu -- 01:26 PM PDT     Moonrise
Thu -- 02:37 PM PDT     0.00 knots Slack
Thu -- 05:48 PM PDT     0.92 knots Max Flood
Thu -- 07:40 PM PDT     Sunset
Thu -- 09:09 PM PDT     -0.00 knots Slack
Thu -- 11:22 PM PDT     -0.58 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.200.30.50.40.30-0.4-0.8-1.1-1.1-0.9-0.6-0.30.20.60.90.90.80.50.1-0.4-0.6

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 (13,3,4,5)
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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.