Saturday, August8, 2020
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Marine Weather and Tides
Ukiah, 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 6:18AMSunset 8:17PM Saturday August 8, 2020 4:46 AM PDT (11:46 UTC) Moonrise 10:12PMMoonset 10:06AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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- 200 Am Pdt Sat Aug 8 2020
Today..S winds 5 to 15 kt, becoming W this afternoon. Wind waves 1 to 2 ft. NW swell 6 to 8 ft at 10 seconds.
Tonight..W winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft at 10 seconds.
Sun..S winds 5 to 10 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft at 10 seconds.
Sun night..S winds 5 to 10 kt. Wind waves 1 ft. NW swell 6 to 8 ft at 12 seconds.
Mon..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft at 12 seconds and S around 2 ft at 19 seconds.
Mon night..S winds around 5 kt. Wind waves 1 ft. NW swell 5 to 7 ft at 11 seconds and S 2 to 3 ft at 18 seconds.
Tue..W winds up to 10 kt. Wind waves 1 ft. NW swell 4 to 6 ft and S 2 to 3 ft.
Wed..NW winds 10 to 20 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft and S 2 to 3 ft.
PZZ500 200 Am Pdt Sat Aug 8 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Split flow today and tonight with north to northwest winds over the outer waters and southerly winds along the inner coastal waters. Expect locally breezy conditions to persist over the northern outer waters through much of the weekend. These winds will create locally hazardous conditions for smaller vessels. Winds will diminish into Sunday with southerly winds gradually expanding into much of the outer waters. Mixed seas will continue through the period with a short period northwest swell and a longer period southerly swell.


7 Day Forecast for Marine Location Near Ukiah, CA
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location: 39.15, -123.21     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 081030 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 330 AM PDT Sat Aug 8 2020

SYNOPSIS. Building heat is expected over the weekend and early next week throughout inland areas, with mild but sunnier conditions along the coast as well. Slight chances for thunderstorms exist across interior mountains Monday.

DISCUSSION. Main weather issues continue to be increasing temperatures inland, shrinking marine layer, and potential isolated thunderstorms across the eastern interior on Monday. Afternoon temperatures will rise a few degrees today followed by another notable rise on Sunday reaching between 100 and 104 degrees across many interior valleys. Forecast models still indicating a weak depression moving into the Bay Area which may promote thunderstorm activity across northern CA and may bring afternoon storms to the usual spots along the Yolla Bolly spine and Trinity Alps. Along the coast, mild conditions continue through the week, although a much shallower and weaker marine later will allow for sunnier skies. While some shallow stratus and fog may develop in places during the overnight periods, particularly in the vicinity of Humboldt Bay, marine clouds are likely to be less widespread and quicker to burn off during the day bringing some nice weather back to the coast.

AVIATION. Expect patches of stratus to develop around Humboldt Bay by daybreak, with possible IFR/LIFR ceilings in the vicinity of KACV through mid morning. Light mist has formed at KCEC, however brisk northerlies offshore will likely result in rapid improvement by 16Z. KUKI and other interior airfields should remain VFR through the period. Patches of stratus and mist will likely redevelop around Humboldt Bay and the Eel Delta late tonight. Also, a southerly wind reversal will advect central California fog and stratus northward onto the Mendocino coast late tonight.

MARINE. A tight pressure gradient between high pressure offshore and a thermal trough along the northern California coast will result in strong northerly winds through early next week. Gale force winds are expected north of Cape Mendocino today through Sunday night, primarily outside 20NM from shore. Low end gales with gusts to 35 kt will also be possible south of Cape Mendocino outside 20NM. For now will stay with a Hazardous Seas Warning for very steep short period seas from 12 to 16 feet. Small Craft Advisory conditions will remain present over the nearshore waters for the next several days, with localized gale force gusts and larger steep seas found near Pt St George and Cape Mendocino. Near Pt St George, gusts around 40 to 45 kt are expected this afternoon and evening. For Mendocino nearshore waters, north winds should abate tonight and switch to light southerly on Sunday south of Shelter Cove. Seas will likely remain steep and hazardous through at least Sunday morning.

Winds look as though they will finally relax somewhat towards the middle of next week as weak troughing develops over the West Coast. Northerlies can be expected to persist for the foreseeable future. Small scale eddies will likely spin up, resulting in localized southerlies from time to time.

FIRE WEATHER. Increasing temperatures and corresponding lower RH values are expected through early next week. This combined with a light but persistent offshore flow at night will also contribute to a reduction in RH recoveries . especially along the upper slopes and ridge tops. Afternoon temperatures are expected to reach near 100 degrees today across many interior low elevations, and will likely peak at between 100 and 105 degrees Sunday and Monday. Daytime winds will generally be driven by terrain backed by but a westerly component. Some stronger overnight offshore gusts are also likely across the ridges of Del Norte County through the weekend. In addition, unstable conditions and deep mixing heights will also likely develop each afternoon late in the weekend and early next week. No thunderstorms are expected today and likely Sunday as well, with slight chances returning to the area Monday. Uncertainty remains high, and greater probabilities likely exist farther to the east. Any storms that produce lighting may be initially dry.

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 11 PM PDT Sunday for PZZ450.

Gale Warning until 3 AM PDT Monday for PZZ470.

Small Craft Advisory until 9 AM PDT Sunday for PZZ455.

Hazardous Seas Warning until 3 AM PDT Monday 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
ANVC1 - 9416841 - Arena Cove, CA 31 mi47 min E 2.9 G 4.1 53°F 53°F1013.8 hPa (-0.0)
46014 - PT ARENA - 19NM North of Point Arena, CA 41 mi27 min NNW 14 G 16 53°F1013.1 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA1 mi51 minN 010.00 miFair65°F54°F68%1012.4 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalm33E4NW8NW10
G18
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NW11W73CalmS3CalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmN4N443N10NW13NW9
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2 days agoN8
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N9N9N6N8NE7N5N7N7CalmCalm3NW3

Tide / Current Tables for Albion, California
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Albion
Click for Map
Sat -- 02:21 AM PDT     4.85 feet High Tide
Sat -- 06:22 AM PDT     Sunrise
Sat -- 08:50 AM PDT     0.88 feet Low Tide
Sat -- 11:08 AM PDT     Moonset
Sat -- 03:31 PM PDT     5.09 feet High Tide
Sat -- 08:18 PM PDT     Sunset
Sat -- 09:35 PM PDT     2.21 feet Low Tide
Sat -- 11:13 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.94.54.84.84.33.52.51.610.91.21.92.83.84.6554.743.32.62.32.22.5

Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Sat -- 02:12 AM PDT     4.95 feet High Tide
Sat -- 06:22 AM PDT     Sunrise
Sat -- 08:52 AM PDT     0.92 feet Low Tide
Sat -- 11:08 AM PDT     Moonset
Sat -- 03:22 PM PDT     5.19 feet High Tide
Sat -- 08:17 PM PDT     Sunset
Sat -- 09:37 PM PDT     2.30 feet Low Tide
Sat -- 11:13 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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44.64.94.84.33.52.51.71.10.91.222.93.94.75.25.14.743.32.72.42.32.6

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 (7,2,3,4)
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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.