Monday, April6, 2020
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Marine Weather and Tides
Redwood Valley, 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 6:46AMSunset 7:43PM Monday April 6, 2020 7:44 AM PDT (14:44 UTC) Moonrise 5:17PMMoonset 5:23AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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- 200 Am Pdt Mon Apr 6 2020
Today..SE winds 5 to 10 kt becoming nw 10 to 20 kt in the afternoon. Waves W 6 ft at 9 seconds. Patchy fog. Slight chance of showers.
Tonight..N winds 10 to 20 kt...easing to 5 to 10 kt. Waves nw 7 ft at 9 seconds.
Tue..NW winds 5 to 15 kt. Waves nw 6 ft at 9 seconds...and nw 3 ft at 19 seconds.
Tue night..N winds 5 to 15 kt. Waves N 7 ft at 7 seconds... And nw 5 ft at 18 seconds.
Wed..N winds 10 to 20 kt. Waves N 8 ft at 8 seconds...and nw 5 ft at 15 seconds.
Thu..NW winds 5 to 15 kt. Waves N 6 ft at 7 seconds...and nw 5 ft at 13 seconds.
Fri..NW winds 10 to 20 kt. Waves N 6 ft at 9 seconds...and S 4 ft at 16 seconds.
PZZ400 200 Am Pdt Mon Apr 6 2020
Synopsis for northern california waters..Light and variable winds this morning will give way to increasing northerlies during the afternoon. Winds and short period seas will continue to trend upward tonight and then persist for much of the week.


7 Day Forecast for Marine Location Near Redwood Valley, CA
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location: 39.28, -123.35     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 061104 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 404 AM PDT Mon Apr 6 2020

SYNOPSIS. A few lingering showers are expected today and Tuesday afternoon. Another chilly morning is expected Tuesday morning but temperatures are expected to gradually warm through the week as high pressure builds in bringing warm and dry conditions.

DISCUSSION. The upper level low off the Mendocino coast continues to slowly drift south. A weak shortwave moving around the low is bringing a few showers to the northern portions of the area this morning, but these are expected to be relatively light. Snow levels are fairly low, around 2,500 feet, but any snow that does fall will likely be less than an inch. This afternoon with the daytime heating showers are expected to spread across much of the area. Generally these will be over the interior, however with the easterly flow aloft over the area a few may drift out to the coast. The best instability is over southern Mendocino and Lake counties. Currently this is not expected to bring thunderstorms this afternoon, but it is not out of the question. High temperatures are expected to warm to around 60 in the interior valleys.

Tonight near freezing and freezing conditions are expected across much of the area. This is expected to be the coldest night of the week for most areas, although there are still some questions on the cloud cover which could keep some areas warmer than expected. The NBM and the NAM are bringing low clouds to the Humboldt coast, however with the low to the southeast of the area and light easterly winds this doesn't seem to likely. So have diminished cloud cover some and lowered temperatures some, however if it remains clear they may need to be lowered more. Most of the northern valleys are expected to have some fog or freezing fog due to the recent rain and this could limit how low temperatures go. Tuesday afternoon once any lingering clouds clear highs across the interior valleys are expected to warm into the mid to upper 60s while the coast remains in the upper 50s. There could be an isolated shower or two over the Yolla Bolla mountains as well, but confidence is low on this. Tuesday night could be another chilly night as things continue to dry out, but that may be slightly offset by the warming airmass.

Wednesday high pressure continues to build in across the area and highs are expected to be in the mid 70s to near near 80 across the interior. The coast may see temperatures around 60. Offshore flow and the high pressure is expected to keep most of the area clear. Wednesday night some of the coldest spots may continue to see frost, but with the airmass warming up significantly it is not expected to be widespread. Confidence is fairly high that this pattern of warm sunny days and cool clear nights is expected to continue through Friday.

For the weekend a system moves into the Pacific Northwest but currently this is not expected to bring any significant weather to NW CA. There may be a few high or mid level clouds and afternoon inland high temperatures may be slightly cooler. The position of the system is such that offshore flow may continue to bring clear skies along the coast and although this could change with a slight shift in the pattern. Early next week looks like the next possibility for rain, but even that doesn't look very likely at this point. MKK

AVIATION. VFR conditions prevail across most of the area this morning as shower activity gradually winds down. Lingering mid level cloud cover and weak offshore flow have helped to limit fog/stratus concerns at the main terminals. Expecting another uptick in showers this afternoon to potentially impact inland airfields including KUKI, but any precipitation should be light enough to keep prevailing VFR conditions in place for the remainder of the day. Current thinking is that weak offshore flow will continue to hamper fog potential through Tuesday morning as well. /CB

MARINE. Light southeast winds backing to the east and relatively calm seas will prevail through this morning as a surface low passes southward through the offshore waters. A northerly wind regime will then quickly develop over the coastal waters this afternoon as high pressure builds in behind the departing low. Small Craft Advisory conditions will spread across much of the area by this evening as winds continue to increase, with short period seas gradually building in response through Tuesday. Northerly winds and short period seas look to dominate the coastal waters through much of the rest of the week as high pressure remains anchored over the eastern Pacific into the weekend. /CB

EKA WATCHES/WARNINGS/ADVISORIES. CA . Frost Advisory until 8 AM PDT this morning for CAZ102>106-109- 112-113.

Freeze Warning until 8 AM PDT this morning for CAZ110-111-114- 115.

NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory from 8 PM this evening to 9 PM PDT Tuesday for PZZ450-475.

Small Craft Advisory from 5 PM this afternoon to 9 PM PDT Tuesday 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
ANVC1 - 9416841 - Arena Cove, CA 32 mi57 min E 7 G 8 40°F 50°F1009.3 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 33 mi35 min E 7.8 G 9.7 49°F 52°F1009.1 hPa45°F

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA13 mi49 minN 010.00 miFair36°F34°F93%1009.7 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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1 day agoCalmSE3CalmSE5S10S6S7SE6SW4S7SE7S4SE4S3S4S6S5S7SE6SE6SE9SE8S9S10
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NW9NW9NW4--N6N8N7CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Albion, California
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Albion
Click for Map
Mon -- 04:23 AM PDT     0.99 feet Low Tide
Mon -- 06:24 AM PDT     Moonset
Mon -- 06:50 AM PDT     Sunrise
Mon -- 10:27 AM PDT     5.74 feet High Tide
Mon -- 04:43 PM PDT     -0.23 feet Low Tide
Mon -- 06:18 PM PDT     Moonrise
Mon -- 07:44 PM PDT     Sunset
Mon -- 11:15 PM PDT     5.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.93.82.61.611.11.82.845.15.75.64.93.72.10.8-0.1-0.20.31.42.74.15.15.7

Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Mon -- 04:21 AM PDT     0.99 feet Low Tide
Mon -- 06:24 AM PDT     Moonset
Mon -- 06:50 AM PDT     Sunrise
Mon -- 10:20 AM PDT     5.74 feet High Tide
Mon -- 04:41 PM PDT     -0.23 feet Low Tide
Mon -- 06:18 PM PDT     Moonrise
Mon -- 07:44 PM PDT     Sunset
Mon -- 11:08 PM PDT     5.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.83.72.51.511.11.82.94.15.15.75.64.83.520.7-0.1-0.20.41.52.84.25.25.7

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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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.