Monday, January20, 2020
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Marine Weather and Tides
Little River, 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 7:26AMSunset 5:20PM Monday January 20, 2020 4:12 PM PST (00:12 UTC) Moonrise 3:47AMMoonset 1:53PM Illumination 18% Phase: Waning Crescent; Moon at 25 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- 235 Pm Pst Mon Jan 20 2020
.small craft advisory in effect through Tuesday morning...
Tonight..SE winds 20 to 30 kt. Waves S building to 10 ft at 9 seconds...and W 13 ft at 16 seconds. Chance of sprinkles. Rain.
Tue..S winds 5 to 15 kt. Waves W 15 ft at 16 seconds. Rain likely and chance of showers.
Tue night..SE winds 5 to 10 kt. Waves W 15 ft at 15 seconds.
Wed..SE winds 5 to 15 kt. Waves W 12 ft at 14 seconds.
Wed night..SE winds 5 to 10 kt. Waves W 8 ft at 12 seconds.
Thu..SE winds 5 to 10 kt. Waves W 8 ft at 12 seconds...and nw 4 ft at 21 seconds.
Fri..SE winds 5 to 15 kt. Waves se 5 ft at 6 seconds...and W 12 ft at 18 seconds.
Sat..S winds 5 to 15 kt. Waves S 5 ft at 6 seconds...and W 9 ft at 15 seconds.
PZZ400 235 Pm Pst Mon Jan 20 2020
Synopsis for northern california waters..Southerly winds will increase in advance of an approaching cold front today. Gales are expected tonight as the front moves into the waters. Large and hazardous westerly swell will build on Tuesday behind the front. An active storm track across the ne pacific will ensure hazardous seas through the remainder of the week.


7 Day Forecast for Marine Location Near Little River, CA
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location: 39.26, -123.75     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 202231 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 231 PM PST Mon Jan 20 2020

SYNOPSIS. A cold front will bring widespread rain and high elevation snow tonight and Tuesday. Episodes of light rainfall will be possible through Friday, mainly north of Cape Mendocino. More widespread rain is expected for the weekend.

DISCUSSION. A break in the high clouds this afternoon has allowed skies to clear. Mainly light winds are in place across the area, although they have started to increase near the Oregon border this afternoon. A frontal boundary is approaching the area. This will bring strong winds and moderate to heavy rain. Rainfall amounts are expected to range from 1 to 2 inches in the mountains, near an inch on the Del Norte coast, and around a half inch around Humboldt Bay, in the Mendcino county valleys and the Trinity county valleys. Snow levels will generally be over 5,500 feet as the front moves onshore, but may stay slightly lower in Trinity county. Behind the front snow levels will drop to around 4,000 feet, but amounts should be lighter at these elevations. The is expected to bring heavy snow to Scott Mountain pass on Hwy 3. Farther south snow levels will be a bit higher. Hwy 36 is not expected to see more than an inch, but this will need to be monitored. Strong winds are expected with the front as well. Gusts of 50 to 55 mph are possible over the higher terrain of Humboldt and Del Norte counties. Some of these gusts are expected to mix to the surface at Crescent City, but these are not expected to make it to the surface in the Eureka area. The wind advisory looks on track. Currently there is some lightning being detected in the front, but the instability is not expected to make it into NW CA.

Tuesday night and Wednesday models are generally showing onshore flow with occasional light rain moving into Del Norte county. Temperatures will be in the 50s during the day with lows in the 40s and upper 30s. Thursday is generally looking drier with some more light rain possible on Friday.

For the weekend the models are starting to show some more significant rainfall moving into the area. The ensembles are showing increasing probabilities that an atmospheric river will move onshore Friday night and linger through Saturday night or Sunday. It looks like NW CA will be on the southern edge of so there are still some questions on how much rain we will see, however confidence is growing that the weekend will be warm and wet. MKK

AVIATION. VFR conditions will continue through midnight, even as mid-level cloudiness begins to fill back in with showers approaching ahead of the next cold front. The main threat to aviation will be gusty winds and strong winds aloft, with low- level turbulence and wind shear possible. Winds aloft will begin to ramp up early this evening, and surface winds will gradually become more gusty as well. A low-level jet of 50-60 KT will shift into the coast along and ahead of the cold front, with the strongest surface winds and winds aloft reaching CEC and ACV sometime between midnight and 3 AM. Some ridgetops and coastal headlands may see southerly surface wind gusts near 50 mph around that time. FROPA is expected around 11-12Z along the Humboldt and Del Norte Coast, and shortly thereafter inland. Winds will remain breezy but generally diminish quickly behind the front. Additionally, ceilings will lower in the MVFR category late tonight into early Tuesday morning, with a band of briefly heavy rain with the front possibly resulting in IFR visibility. VSBY should improve quickly within a couple of hours of FROPA, with widely scattered showers and gradually rising ceilings for the bulk of Tuesday. /AAD

MARINE. SSE winds and short period wind waves will steadily increase today as another frontal system approaches the offshore waters. In addition, a long period westerly will combine forces with a shorter period westerly swell to produce seas around 10 ft. Southerly winds will ramp up further tonight, reaching solid gale in the northern waters by mid to late evening. High resolution guidance has the wind switching to the SW and falling off quickly behind the front north of Cape Mendo early Tue, but then ramping up again as a secondary trough approaches in the cooler/more unstable air behind the front. Also, gale gusts may briefly blow across the southern inner waters Tuesday morning as the front heads southward. After the strong winds (gales) die down on Tuesday, the main hazard will be a WNW swell which is forecast to hit 15 ft at 15 seconds. An active storm track across the NE Pacific will ensure hazardous seas through the remainder of the week. Toward the end of the week, Friday in particular, a long period westerly swell will build and pose a significant threat to mariners traversing harbor entrances as well as beachgoers. /SEC /EYS

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 . Wind Advisory from 10 PM this evening to 6 AM PST Tuesday for CAZ101-102-104>106.

Winter Storm Warning from 10 PM this evening to 3 PM PST Tuesday for CAZ107.

NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 8 PM PST this evening for PZZ450-475.

Gale Warning from 8 PM this evening to 7 AM PST Tuesday for PZZ450-475.

Small Craft Advisory until 6 PM PST this evening for PZZ470.

Gale Warning from 6 PM this evening to 7 AM PST Tuesday for PZZ470.

Small Craft Advisory until 7 AM PST Tuesday 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
46014 - PT ARENA - 19NM North of Point Arena, CA 12 mi33 min SSE 16 G 19 54°F 52°F1013.9 hPa51°F
ANVC1 - 9416841 - Arena Cove, CA 24 mi73 min E 12 G 15 55°F 53°F1014.5 hPa (-1.8)

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA30 mi77 minSSE 710.00 miOvercast57°F36°F45%1014.7 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmN4CalmCalmCalmCalmCalmSW3CalmE4CalmCalmS3N3E3NW3CalmCalmSE4SE7S7SE8
1 day agoCalmW3NW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN4CalmCalmS3Calm
2 days agoNW3NW3CalmCalmCalmCalmN3CalmCalmCalmCalmSW3W3CalmCalmCalmCalmN3CalmCalmCalmCalmCalm--

Tide / Current Tables for Albion, California
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Albion
Click for Map
Mon -- 12:43 AM PST     2.51 feet Low Tide
Mon -- 03:47 AM PST     Moonrise
Mon -- 07:04 AM PST     6.38 feet High Tide
Mon -- 07:30 AM PST     Sunrise
Mon -- 01:53 PM PST     Moonset
Mon -- 02:17 PM PST     -0.26 feet Low Tide
Mon -- 05:21 PM PST     Sunset
Mon -- 09:11 PM PST     4.41 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.62.52.93.54.45.36.16.46.15.342.51.10.2-0.2-0.10.41.22.33.344.44.33.8

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Mon -- 01:49 AM PST     0.00 knots Slack
Mon -- 03:47 AM PST     Moonrise
Mon -- 04:47 AM PST     0.82 knots Max Flood
Mon -- 07:31 AM PST     Sunrise
Mon -- 07:37 AM PST     -0.00 knots Slack
Mon -- 10:59 AM PST     -1.37 knots Max Ebb
Mon -- 01:53 PM PST     Moonset
Mon -- 03:02 PM PST     0.00 knots Slack
Mon -- 05:21 PM PST     Sunset
Mon -- 06:13 PM PST     1.07 knots Max Flood
Mon -- 09:19 PM PST     -0.00 knots Slack
Mon -- 11:41 PM PST     -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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-0.5-0.30.10.50.80.80.70.3-0.2-0.8-1.3-1.4-1.3-1-0.6-00.50.91.110.70.2-0.3-0.5

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 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.