Wednesday, August5, 2020
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Marine Weather and Tides
Philo, 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 6:16AMSunset 8:21PM Wednesday August 5, 2020 5:57 AM PDT (12:57 UTC) Moonrise 8:58PMMoonset 7:10AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 337 Am Pdt Wed Aug 5 2020
.small craft advisory in effect through Thursday afternoon...
Today..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 8 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 8 seconds.
Thu..NW winds 15 to 25 kt with gusts up to 35 kt. Wind waves 4 to 5 ft. NW swell 5 to 7 ft at 8 seconds.
Thu night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 9 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 6 to 8 ft at 10 seconds.
Fri night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft at 10 seconds.
Sat..NW winds up to 10 kt. Wind waves 1 ft. NW swell 6 to 8 ft.
Sun..SW winds up to 10 kt. Wind waves 1 ft. NW swell 6 to 8 ft. Patchy fog.
PZZ500 337 Am Pdt Wed Aug 5 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds will prevail through late week. Strongest winds can be expected along the inner coastal waters north of point reyes and south of point sur. Winds over the north sf bay will be breezy with a few stronger gusts Wednesday afternoon and into the early evening. These winds will generate steep fresh swells resulting in locally hazardous seas, especially for smaller vessels.


7 Day Forecast for Marine Location Near Philo, CA
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location: 39.15, -123.45     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 051125 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 425 AM PDT Wed Aug 5 2020

SYNOPSIS. An upper level trough will bring relatively cooler air to northwest California Thursday, with a deep marine layer and more widespread and persistent coastal clouds. Stray thunderstorms might be found around the mountains of northern Trinity County this afternoon. Inland temperatures will be heating back up starting Friday.

DISCUSSION. Marine layer cloudiness continues to hang around the northwestern coast this morning, with local profiler data indicating that this layer is currently around 3500 ft deep. While the marine layer should begin to slowly shrink this afternoon as an upper level trough exits to the east, expect stratus to continue to linger around the coast and push inland once again tonight. Model guidance is indicating strengthening northerly flow building over the coastal waters trying to impinge on Point St George beginning this afternoon, along with light nocturnal offshores beginning to develop during Thursday night as upper level ridging builds overhead, and these both should help to further erode the marine layer in the back half of this week, particularly in Del Norte county. Meanwhile, interior areas will continue to trend a bit cooler both today and tomorrow.

Isolated thunderstorms remain possible around the Scott Mountain summit vicinity and the northern portions of the 'Trinity Horn' this afternoon . however the better threat continues to be farther north into Siskiyou County, as the upper level trough triggering convection will begin lifting out to our northeast this afternoon, with decreasing mid-level lapse rates and warming temperatures aloft.

That warming aloft will continue into Friday and the weekend as upper-level ridging builds back in, effectively suppressing the marine layer and possibly restricting it to the overnight and morning hours along the immediate Humboldt coast, and perhaps parts of the southern Mendocino coast. Afternoon northerly breezes along portions of the coast might help some areas clear out as well, but will also keep it a bit cooler. Meanwhile, inland areas will heat back up, with plenty of 90s and even some low-to-mid 100s for highs in the hotter valleys this weekend. /AAD&TDJ

AVIATION. Marine stratus once again shrouded the northern California Coast overnight, both CEC and ACV remain overcast with CEC lifting to MVFR early this morning while ACV remains LIFR at time of writing. Del Norte may see more substantial clearing today compared to yesterday as northerlies increase this afternoon, with low clouds returning this evening and tonight. Farther south in Humboldt, stratus will likely follow a similar trend today as yesterday, with ceilings lifting to MVFR levels and only partial clearing if there is any clearing at all, followed by another round of IFR to LIFR ceilings and visibilities tonight. Some clouds are building near UKI early this morning, however these should clear out by mid-morning.

MARINE. Moderate northerly winds and steep seas will continue throughout the waters, with strongest gusts occurring in the lee of Cape Mendocino where gusts as high as 25 kt are likely occurring. Small craft conditions continue for the northern and southern outer waters, and southern inner waters until midnight. Otherwise, marine conditions will tend to improve slightly throughout tonight and Thursday as high pressure over the Pacific tends to weaken a little bit more, allowing for a weaker pressure gradient. However, northerly winds are expected to increase during Thursday night in the outer waters due to the strengthening of pressure gradient.

FIRE WEATHER. An upper level trough will continue to bring modest cooling and improvement in humidity through Thursday, especially where the deepening marine layer reaches inland. The trough will also bring a small chance for thunderstorms over the higher terrain of northeastern Humboldt and northern Trinity counties this afternoon, primarily in the alps and around the Trinity Horn, thus we will continue to have a headline for fire weather zone 283. Warmer temperatures and drier conditions are expected to return for the end of the week and the weekend, with light offshore flow during the nights and mornings.

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until midnight PDT tonight for PZZ455-470- 475.



Visit us at https://www.weather.gov/eureka

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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 21 mi64 min NW 2.9 G 6 56°F 51°F1014.1 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 28 mi38 min NW 19 G 23 55°F1013.6 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA13 mi62 minN 8 G 1510.00 miA Few Clouds60°F53°F78%1012.4 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmN3Calm333N7W75
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NE9N64NE55N55CalmN8
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1 day agoCalmCalmCalmE3CalmE3NW8
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2 days agoCalmCalmCalmCalmCalmCalm4NW11N9
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N8N5CalmCalmCalmCalmNW3NW3N4

Tide / Current Tables for Albion, California
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Albion
Click for Map
Wed -- 12:14 AM PDT     6.06 feet High Tide
Wed -- 06:19 AM PDT     Sunrise
Wed -- 07:04 AM PDT     -0.37 feet Low Tide
Wed -- 08:11 AM PDT     Moonset
Wed -- 02:00 PM PDT     5.02 feet High Tide
Wed -- 07:10 PM PDT     2.54 feet Low Tide
Wed -- 08:21 PM PDT     Sunset
Wed -- 09:58 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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65.95.13.82.30.9-0-0.4-0.10.61.72.83.94.754.84.23.42.82.62.73.344.9

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Wed -- 01:12 AM PDT     -0.00 knots Slack
Wed -- 04:23 AM PDT     -1.44 knots Max Ebb
Wed -- 06:19 AM PDT     Sunrise
Wed -- 08:11 AM PDT     Moonset
Wed -- 08:18 AM PDT     0.00 knots Slack
Wed -- 11:19 AM PDT     1.14 knots Max Flood
Wed -- 02:33 PM PDT     -0.00 knots Slack
Wed -- 04:55 PM PDT     -0.81 knots Max Ebb
Wed -- 08:16 PM PDT     0.00 knots Slack
Wed -- 08:21 PM PDT     Sunset
Wed -- 09:58 PM PDT     Moonrise
Wed -- 11:03 PM PDT     0.84 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.1-0.5-1.1-1.4-1.4-1.1-0.7-0.20.40.91.11.10.80.3-0.3-0.7-0.8-0.7-0.5-0.10.30.70.8

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 (8,2,3,4)
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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.