Thursday, July16, 2020
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Marine Weather and Tides
Calpella, 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 5:59AMSunset 8:38PM Thursday July 16, 2020 7:20 AM PDT (14:20 UTC) Moonrise 1:36AMMoonset 4:15PM Illumination 15% Phase: Waning Crescent; Moon at 26 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- 232 Am Pdt Thu Jul 16 2020
Today..S winds up to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 10 seconds.
Tonight..W winds around 5 kt. Wind waves 1 ft. NW swell 4 to 6 ft at 10 seconds.
Fri..S winds up to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 9 seconds.
Fri night..SW winds up to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 10 seconds and S around 2 ft at 8 seconds.
Sat..S winds 5 to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 10 seconds.
Sat night..S winds around 5 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 10 seconds.
Sun..SW winds up to 10 kt. Wind waves 1 ft. NW swell 4 to 6 ft. Patchy fog.
Mon..W winds up to 10 kt. Wind waves 1 ft. NW swell 3 to 5 ft. Patchy fog.
PZZ500 232 Am Pdt Thu Jul 16 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure off of the coast will continue to bring generally light to moderate southerly flow over the waters through Friday. Meanwhile, locally stronger northwest winds will develop across the northern offshore waters Thursday night into Friday. Gusty winds will once again be possible through the golden gate and west delta Thursday afternoon. The sea state will continue a moderate southerly swell with a moderate period.


7 Day Forecast for Marine Location Near Calpella, CA
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location: 39.21, -123.35     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 161249 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 549 AM PDT Thu Jul 16 2020

SYNOPSIS. Hot and dry weather will persist over the interior through the week. However, a thermal trough bringing warmer temperatures to coastal Del Norte and Humboldt counties will begin to ease a bit.

DISCUSSION. Considerable low cloudiness covers most of the NW CA coastal waters and adjacent land areas. Cloudiness extends up some of the interior river valleys with the marine layer about 2000 feet deep. The marine layer appears to be even deeper farther to the S, as evidenced by nighttime microphysics satellite imagery. A region of mostly clear skies extends from SW OR offshore W of the Redwood Coast. However, clouds have spread N along the immediate coast to around KCEC courtesy of a flow reversal at cloud level. Clouds are expected to erode from their inland edge during the morning hours. However, clouds may linger longer along the immediate coast than on previous days, particularly on the S sides of any eddies that promote onshore wind flow. The potential for coastal stratus and patchy fog is expected to further increase on Friday and Saturday, with improving conditions during the late mornings each day.

Temperatures across the area will be a bit lower today than the past couple of days. However, temperatures will remain about 5 degrees above normal across the interior. There will continue to be a tight gradient in temperatures between the immediate coast and inland areas. Offshore flow continues across Del Norte County, albeit about 5 to 10 mph lower than yesterday. Again, no coastal downsloping signature is noted. Have continued to lean more closely to MOS than NBM for maximum temperatures along the immediate coast. The current forecast calls for dry weather throughout the next seven days. /SEC

AVIATION. GOES-17 Fog Product shows widespread stratus impacting both coastal areas and the coastal waters of Northwest California early this morning. The lone exception is the northern Del Norte coast, though a localized patch of low clouds and ground fog developed during the overnight period yet again. Stratus is creeping up the Del Norte coast as of 4 a.m., so expect it to reach KCEC in the next hour or so and impact KCEC early this morning. IFR to LIFR conditions will be possible at both coastal terminals this morning and likely give way to MVFR to VFR conditions this afternoon. Widespread stratus is expected to return late this evening and into the overnight period, bringing back IFR to LIFR conditions to the coast. Winds will be gusty again this afternoon and early evening at KCEC. Elsewhere, VFR conditions will prevail across the interior.

MARINE. Gales will continue over the northern outer waters through this evening, with winds easing a bit starting tonight. This will only be a brief break in Gales, as guidance shows Gales redeveloping by late Friday evening. The Gale Warning continues through this evening and another one will likely be issued for the next round of Gales that are expected late on Friday. Small Craft Advisories are in place for locally strong winds and steep seas in the northern inner and southern outer zones through Friday afternoon. Gusts to near gale force will continue to be possible through Friday near Point Saint George. Otherwise, a northwest swell will impact portions of the coastal waters through around midday on Saturday.

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 5 PM Friday for PZZ450-475. Gale Warning until 11 PM PDT this evening 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 28 mi111 min N 2.9 G 4.1 53°F
46014 - PT ARENA - 19NM North of Point Arena, CA 33 mi31 min NNE 3.9 G 5.8 52°F7 ft1012.6 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA9 mi25 minS 510.00 miFair56°F51°F84%1011.5 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmE4E45SE4N10NW8W9W10NE6N55S6S3S6S4S6S7S5S4S4S5
1 day agoSE4CalmSE4Calm3SE76E3W8W10W8W53S5S5S7S6S6S5S6S5S5SE3SE4
2 days agoN34NW435E345W126S45SE5S3E3CalmSE3S4S5S5SE3S3CalmSE4

Tide / Current Tables for Albion, California
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Albion
Click for Map
Thu -- 02:36 AM PDT     Moonrise
Thu -- 03:15 AM PDT     0.46 feet Low Tide
Thu -- 06:02 AM PDT     Sunrise
Thu -- 10:08 AM PDT     3.83 feet High Tide
Thu -- 02:28 PM PDT     2.85 feet Low Tide
Thu -- 05:16 PM PDT     Moonset
Thu -- 08:32 PM PDT     5.85 feet High Tide
Thu -- 08:39 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.51.50.80.50.611.72.43.13.63.83.73.43.12.92.93.33.94.65.35.85.85.34.4

Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Thu -- 02:36 AM PDT     Moonrise
Thu -- 03:13 AM PDT     0.46 feet Low Tide
Thu -- 06:02 AM PDT     Sunrise
Thu -- 10:01 AM PDT     3.83 feet High Tide
Thu -- 02:26 PM PDT     2.85 feet Low Tide
Thu -- 05:17 PM PDT     Moonset
Thu -- 08:25 PM PDT     5.85 feet High Tide
Thu -- 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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2.41.40.80.50.611.72.53.13.63.83.73.43.12.92.93.33.94.75.45.85.85.34.3

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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weather_mapweather_map weather_map

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Disclaimer:
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.