Tuesday, July14, 2020
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Marine Weather and Tides
Comptche, 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 5:57AMSunset 8:40PM Tuesday July 14, 2020 11:49 AM PDT (18:49 UTC) Moonrise 12:36AMMoonset 2:14PM Illumination 31% Phase: Waning Crescent; Moon at 24 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- 829 Am Pdt Tue Jul 14 2020
.small craft advisory in effect until 5 pm pdt this afternoon...
Today..NW winds 10 to 20 kt. Waves nw 8 ft at 8 seconds.
Tonight..NW winds 10 to 20 kt. Waves N 7 ft at 7 seconds.
Wed..S winds 5 to 10 kt. Waves N 7 ft at 8 seconds...and nw 2 ft at 12 seconds.
Wed night..W winds 5 to 10 kt. Waves N 7 ft at 9 seconds... And nw 3 ft at 11 seconds.
Thu..NW winds 10 to 20 kt. Waves N 6 ft at 8 seconds.
Fri..NW winds 10 to 20 kt. Waves nw 7 ft at 8 seconds.
Sat..NW winds 10 to 15 kt. Waves nw 4 ft at 9 seconds.
PZZ400 829 Am Pdt Tue Jul 14 2020
Synopsis for northern california waters..Gales will persist over the northern waters through Thursday afternoon. Locally strong gusts and steep, short-period seas are also expected near point saint george and cape mendocino during the next couple of days. Otherwise, a northwest swell will move through the waters beginning on Wednesday.


7 Day Forecast for Marine Location Near Comptche, CA
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location: 39.25, -123.48     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 141145 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 445 AM PDT Tue Jul 14 2020

SYNOPSIS. Hot and dry weather conditions will persist over the interior through the week. In addition, a thermal trough will build across the coast today through Wednesday, resulting in warmer temperatures for coastal Del Norte and Humboldt counties.

DISCUSSION. Areas of low clouds and some fog have developed this morning around Humboldt Bay and around Cape Mendocino S over the Mendocino County coastal waters. This cloudiness extends well inland up the Eel River Valley. In addition, some low clouds and fog have formed around KCEC, likely the result of radiational cooling. Low clouds are expected to rapidly dissipate during the morning hours across most areas.

A warming trend for Humboldt, Del Norte and Trinity counties is expected during the short term. The forecast for coastal temperatures will be quite tricky, as inland temperatures will be quite hot, but onshore flow during the afternoons mitigates temperatures rising too far. The gradient in temperatures between the immediate coast and inland locations will be quite tight. However, wind directions during the morning hours are expected to be slightly offshore, which may support some rapid warming, particularly in coastal Del Norte County. Have forecast highs much higher than MOS but a few degrees lower than NBM guidance.

Farther inland, northeast ridgetop winds could gust to 30-40 mph early this morning and and again tonight over interior Del Norte County, while at the coast near Crescent City, sustained N-NW winds will likely be in excess of 20 mph.

Temperatures will remain above normal across much of the interior through the end of the week. Onshore westerly-northwesterly breezes will likely moderate temperatures for the western most coastal valleys. Meanwhile, central and eastern Trinity County will continue to see triple digit temperatures. The potential for coastal stratus and patchy fog is expected to gradually increase later in the week and into Saturday, with improving conditions during the late mornings each day.

The current forecast calls for dry weather throughout the next seven days. However, a non-zero threat of a thunderstorm will exist over the Trinity Alps and Yolla Bolly Mountains during Thursday afternoon/evening. Will continue to assess for possible introduction into the forecast during future shifts. /SEC

AVIATION. Patchy areas of stratus have developed overnight in the vicinity of Humboldt Bay, the Eel River Valley, and around Point Arena. Southerlies along the coast south of Cape Mendocino have allowed the stratus around Point Arena to expand northward a bit and impact more of the Mendocino coast early this morning. Weak offshore flow has kept northern Humboldt and most of Del Norte stratus free early this morning, though a localized patch of low clouds have impacted KCEC. Expect stratus to expand a bit and impact KACV this morning, at least lowering ceilings. Conditions should improve north of Cape Mendocino around mid-morning, but guidance suggests that it may be a bit more stubborn to clear out along the Mendocino coast. Mostly VFR conditions are expected at both coastal this afternoon and evening, with stratus likely redeveloping in the vicinity of Humboldt Bay by midnight. Elsewhere, VFR conditions are expected to prevail across interior Northwest California. In addition, gusty winds are expected at KCEC this afternoon and evening.

MARINE. Gales will continue over the northern outer waters through Thursday afternoon before winds ease a bit later on Thursday. A Gale Warning is in place for zone 470. Winds have weakened south of Cape Mendocino, so the Gale Warning for zone 475 was cancelled earlier and replaced with a Hazardous Seas Warning that is in effect through this afternoon. That being said, localized gusts to around 35 knots will still be possible downwind of Cape Mendocino. Small Craft Advisories are in place for the inner waters, though localized gusts to gale force will be possible through Thursday near Point Saint George. Otherwise, a northwest swell will move through the waters on Thursday.

FIRE WEATHER. Gusty E-NE winds are forecast to occur over the ridges of Del Norte and northern Humboldt Counties early this morning and again tonight, with peak gusts of 30-40 mph. Fuels remain marginal in this area for rapid fire growth. However, an increased fire weather threat will exist due to the combination of gusty winds and modest overnight humidity recovery.

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 5 AM Thursday for PZZ450. Gale Warning until 5 PM Thursday for PZZ470. Small Craft Advisory until 5 PM this afternoon for PZZ455. Hazardous Seas Warning until 5 PM this afternoon 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 26 mi29 min W 1.9 G 5.8 50°F1014.1 hPa
ANVC1 - 9416841 - Arena Cove, CA 26 mi109 min 50°F

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA17 mi53 minN 010.00 miFair80°F54°F41%1011 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hr5E345W126S45SE5S3E3CalmSE3S4S5S5SE3S3CalmSE4SE4CalmSE4Calm
1 day agoE46NW10NW10NW11NW9
G16
N6N11N8N9S333CalmCalmCalmCalmN3CalmCalmN34NW43
2 days ago34NW7W10W9W75N10N10CalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalm3N4Calm

Tide / Current Tables for Albion, California
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Albion
Click for Map
Tue -- 01:37 AM PDT     Moonrise
Tue -- 01:40 AM PDT     1.46 feet Low Tide
Tue -- 06:00 AM PDT     Sunrise
Tue -- 07:39 AM PDT     3.43 feet High Tide
Tue -- 12:43 PM PDT     2.23 feet Low Tide
Tue -- 03:15 PM PDT     Moonset
Tue -- 07:10 PM PDT     5.46 feet High Tide
Tue -- 08:40 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.51.51.72.22.73.13.43.43.32.92.62.32.22.53.13.84.65.25.55.34.843

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Tue -- 01:37 AM PDT     Moonrise
Tue -- 02:28 AM PDT     0.00 knots Slack
Tue -- 05:18 AM PDT     0.54 knots Max Flood
Tue -- 06:00 AM PDT     Sunrise
Tue -- 08:11 AM PDT     -0.00 knots Slack
Tue -- 10:23 AM PDT     -0.49 knots Max Ebb
Tue -- 01:59 PM PDT     0.00 knots Slack
Tue -- 03:16 PM PDT     Moonset
Tue -- 04:56 PM PDT     0.59 knots Max Flood
Tue -- 07:56 PM PDT     -0.00 knots Slack
Tue -- 08:41 PM PDT     Sunset
Tue -- 11:00 PM PDT     -0.94 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.5-0.20.20.40.50.50.40.1-0.3-0.5-0.5-0.3-0.200.30.50.60.50.3-0-0.5-0.8-0.9

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 (14,3,4,5)
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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.