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Marine Weather and Tides
Fort Bragg, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:22AMSunset 4:52PM Saturday December 14, 2019 10:12 PM PST (06:12 UTC) Moonrise 7:34PMMoonset 9:48AM Illumination 87% Phase: Waning Gibbous; Moon at 18 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- 836 Pm Pst Sat Dec 14 2019
.small craft advisory in effect through Sunday evening...
Tonight..NW winds 10 to 20 kt. Waves nw building to 8 ft at 7 seconds...and nw 10 ft at 15 seconds. Chance of showers.
Sun..NW winds 5 to 15 kt. Waves nw 12 ft at 13 seconds.
Sun night..NE winds 5 to 10 kt. Waves nw 10 ft at 13 seconds. Chance of sprinkles and slight chance of rain.
Mon..E winds 5 kt. Waves W 8 ft at 12 seconds.
Mon night..SE winds 5 to 10 kt. Waves W 8 ft at 15 seconds.
Tue..SE winds 15 to 20 kt. Waves se 8 ft at 8 seconds...and W 10 ft at 18 seconds.
Wed..SE winds 5 to 15 kt. Waves W 14 ft at 15 seconds.
Thu..S winds 20 to 25 kt. Waves S 6 ft at 9 seconds...and nw 6 ft at 14 seconds.
PZZ400 836 Pm Pst Sat Dec 14 2019
Synopsis for northern california waters..Winds will continue to shift to the northwest the rest of this evening, followed by generally light to moderate breezes for the remainder of the weekend and early next week. Otherwise, a large, long-period northwest swell will very slowly subside into next week.


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 150534 CCA AFDEKA

AREA FORECAST DISCUSSION . CORRECTED National Weather Service Eureka CA 934 PM PST Sat Dec 14 2019

SYNOPSIS. Showers with snow above 2500 feet will continue this evening. Some showers may produce locally heavy rain mixed with small hail and a lightning strike or two this evening along the coast. Drier weather is expected Sunday through Tuesday before another storm brings the potential for rain mid to late next week.

UPDATE. Snow levels dropped quickly as the initial band of heavy showers moved inland earlier this afternoon, bringing accumulating snow to as low as approximately 2500 feet in elevation. This includes several interior mountain passes, including Berry Summit along Highway 299. Snow levels will likely remain near this level through the remainder of the evening, and multiple additional waves of showers can be expected. As a result, 1-3 inches of accumulating snow can be expected between roughly 2500 and 4000 feet in elevation over the course of the evening, with as much as 6 inches of snow possible above 4000 feet. This will primarily occur across Humboldt and Trinity counties, but lighter amounts can also be expected at similar elevations across western Trinity and northern Mendocino Counties as well.

Because of this, a Winter Weather Advisory has been issued for Humboldt and Del Norte counties above 2500 feet through 3 AM Sunday morning.

PREV DISCUSSION. /issued 245 PM PST Sat Dec 14 2019/

DISCUSSION . A cold front is moving onshore this afternoon and brought a short period of rain to the area. Snow levels are around 3,000 to 3,500 feet. Behind the front numerous showers are expected. This is where there is a slight chance for thunderstorms. The 18Z models continue to show over 200 j/kg on the coastal plain of Humboldt and Del Norte counties and over the northern waters. The threat should diminish by 9 or 10pm. Small hail is likely with these showers as well. The airmass doesn't appear cold enough to see widespread hail accumulation on the roadways. Locally heavy rain is expected with these showers, although there may be some breaks in the rain between showers. Rain showers diminish in coverage through the night.

Sunday morning there may be a few lingering showers in the morning, but it is expected to be mainly dry. Sunday afternoon through Monday afternoon some overrunning is expected as high pressure rapidly builds into the area. This is expected to bring widespread clouds and may bring some light rain or sprinkles to Del Norte and Northern humboldt. The models are still struggling to handle feature so confidence is lower than normal on the potential for rain. Snow levels will be around 2,500 feet when this starts, but the warm air advection will warm snow levels through the event. Confidence is fairly high that rainfall amounts will remain less than a tenth of an inch. The threat for rain will diminish Monday afternoon and dry weather is expected Monday night. MKK

Long Term (previous discussion) . GFS and ECMWF have come into much better agreement mid to late next week. Both models are now painting a wet picture compared to the 0z ECMWF from yesterday which had us dry every day next week. It is that time of year for longer duration rain events with atmospheric rivers. Even though the picture is wet for Del Norte and northern Humboldt counties mid to late next week, moderate to heavy rain may not develop for the remainder of the forecast area til Friday night or Saturday when the front finally moves through. The ensemble blended guidance seems to be the most level headed option mid to late next week with precip probabilities trending upward.

AVIATION . Rain accompanying a fast moving front will bring mainly MVFR conditions to local airfields as it moves eastward across the area this afternoon, with brief periods of IFR visibilities in heavier showers. The heaviest rain is expected to the clear the area between 03-06z, with lighter showers and MVFR conditions continuing through late tonight and possibly into Sunday morning. Mostly VFR conditions are expected at UKI as rain will be lighter across Mendocino County. A few thunderstorms will remain possible at CEC and ACV through roughly 04z as a more unstable environment offshore spreads towards the coast. Conditions will improve to VFR across the area during the day on Sunday as high pressure builds over NW CA. /CB

MARINE . A period of fresh northwesterlies will develop across the the coastal waters tonight in the wake of the front, with a few gusts to 25 kt over the outer waters through Sunday morning. This will help to briefly build short period seas into the 7-8 ft range through the first part of the day on Sunday, to pair with the large NW swell which has been the dominant wave group in recent days. Wind will quickly diminish by Sunday afternoon, with primarily light southerlies prevailing through Monday before increasing to advisory level on Tuesday. The NW swell will remain in the 10-12 ft range and continue to necessitate a Small Craft Advisory area-wide through Sunday evening before slowly decaying through the middle of next week. A fresh NW swell train is expected to arrive on Wednesday. /CB

EKA WATCHES/WARNINGS/ADVISORIES. CA . Winter Weather Advisory until 3 AM PST Sunday for CAZ102-105-106.

NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 9 PM PST Sunday for PZZ450-455-470- 475.



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 mi43 min NW 23 G 29 52°F 1017.9 hPa47°F
ANVC1 - 9416841 - Arena Cove, CA 35 mi61 min WNW 6 G 8.9 50°F 54°F1017.9 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA37 mi77 minNW 53.00 miHeavy Rain45°F39°F83%1017.1 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmCalmNW53NW3W6SW3CalmCalmCalmSW3CalmN8N953NW7NE5CalmCalmCalmNW5
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS3S3S5SE7S8S5SE63CalmE3CalmS3
2 days agoSE5S9CalmS3CalmS4CalmCalmCalmCalmCalmCalmSW3CalmCalmCalmCalmCalmCalmW3CalmCalmCalmCalm

Tide / Current Tables for Noyo River, California
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Noyo River
Click for Map
Sun -- 02:04 AM PST     4.99 feet High Tide
Sun -- 06:47 AM PST     3.22 feet Low Tide
Sun -- 07:28 AM PST     Sunrise
Sun -- 10:36 AM PST     Moonset
Sun -- 12:26 PM PST     6.19 feet High Tide
Sun -- 04:52 PM PST     Sunset
Sun -- 07:37 PM PST     -0.79 feet Low Tide
Sun -- 08:41 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.94.754.84.33.73.33.23.54.255.76.16.15.54.42.91.30-0.7-0.7-0.20.71.9

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Sun -- 02:34 AM PST     -0.00 knots Slack
Sun -- 04:41 AM PST     -0.66 knots Max Ebb
Sun -- 07:27 AM PST     Sunrise
Sun -- 07:41 AM PST     0.00 knots Slack
Sun -- 10:36 AM PST     0.68 knots Max Flood
Sun -- 10:36 AM PST     Moonset
Sun -- 01:11 PM PST     -0.00 knots Slack
Sun -- 04:49 PM PST     -1.47 knots Max Ebb
Sun -- 04:52 PM PST     Sunset
Sun -- 08:40 PM PST     0.00 knots Slack
Sun -- 08:41 PM PST     Moonrise
Sun -- 11:47 PM PST     1.12 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.70.3-0.2-0.6-0.6-0.5-0.20.10.40.60.70.40.1-0.4-0.9-1.3-1.5-1.2-0.8-0.30.20.71

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 (1,6,7,8)
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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 numerious 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.