Sunday, December8, 2019
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Marine Weather and Tides
Caspar, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:18AMSunset 4:51PM Sunday December 8, 2019 1:08 PM PST (21:08 UTC) Moonrise 3:02PMMoonset 3:39AM Illumination 90% Phase: Waxing Gibbous; Moon at 12 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- 836 Am Pst Sun Dec 8 2019
Today..NW winds 5 to 15 kt. Waves sw 8 ft at 10 seconds...and N 3 ft at 12 seconds.
Tonight..N winds 5 to 10 kt. Waves sw 6 ft at 8 seconds...and nw 5 ft at 16 seconds.
Mon..S winds 5 kt. Waves sw 3 ft at 7 seconds...and nw 6 ft at 15 seconds.
Mon night..S winds 5 to 10 kt. Waves nw 6 ft at 15 seconds.
Tue..SE winds 5 to 10 kt. Waves S 4 ft at 5 seconds...and W 10 ft at 15 seconds.
Wed..SE winds 5 to 10 kt. Waves S 4 ft at 6 seconds...and W 8 ft at 16 seconds.
Thu..SE winds 5 to 10 kt. Waves S 4 ft at 7 seconds...and W 15 ft at 18 seconds.
PZZ400 836 Am Pst Sun Dec 8 2019
Synopsis for northern california waters..Winds and seas will continue to gradually weaken across the waters through Monday. South winds will develop as another front approaches Tuesday. Later in the week, a large, long period west- northwesterly swell is forecast to move through the waters on Thursday and Friday.


7 Day Forecast for Marine Location Near Caspar, CA
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location: 39.35, -123.83     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 081259 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 459 AM PST Sun Dec 8 2019

SYNOPSIS. Clouds and a few showers will linger across northwest California this morning in the wake of a departing storm system. High pressure will bring dry weather for Monday with gradually clearing skies after some valley fog. A weak front will then bring light rain in on Tuesday, with mild but showery weather continuing through much of the remainder of the week.

DISCUSSION. A weakening upper-level trough and associated surface low pressure has pushed inland and will track off to our southeast today, resulting in an end to our wet and windy weather. A few spotty showers will linger this morning, especially across the inland mountainous terrain, but additional rainfall amounts will be on the light side; mainly a tenth of an inch or less. Overcast skies cover most of northwest California this morning, and as winds have calmed down during the overnight hours, some patchy fog has developed. A highly amplified high pressure ridge and weak surface high will build into the West Coast later today and tonight. With that, drier air will filter in with subsidence, but lingering low level moisture will be capped under a strengthening inversion. Still think the low clouds will thin and scatter for many areas by the end of the day today, especially along the coast, but am not fully confident in too much sun this afternoon. Otherwise, expect a seasonably mild day with much lighter winds than the last couple of days.

By tonight while we should see clearing skies, low clouds and fog will likely be rather quick to redevelop in the valley areas and possibly along portions of the coastal plain as well. Expect a cooler night than the last few, with low 40s along the coast and 30s inland by Monday morning. Fog may be rather persistent across the inland valleys with plenty of low-level moisture trapped under a strong inversion. Otherwise, Monday may end up being one of the nicest days of the upcoming week, with a fair amount of sun and light winds, and no precipitation.

By Tuesday, the next front will be headed our way. This wave will be working through the broad ridge along the West Coast, and will thus lack much upper-level support or moisture . so only light rainfall is expected. A much stronger upper trough will then drop into the Gulf of Alaska, sending a series of shortwaves toward the Pacific Northwest through the end of the week. None of these waves look particularly strong, but rainfall may add up to some substantial amounts during the Wednesday night through Saturday time period, especially near the Oregon border. Rainfall will be lighter and more intermittent farther south into Mendocino county. Expect all of this rainfall to be beneficial, and do not see any periods of strong winds at this point, so impacts with this period of unsettled weather will be minimal. National Blend Model guidance has been consistent in cooler air eventually settling in next weekend with lowering snow levels; otherwise expect just rain at all our highway passes this week. /AAD

AVIATION. Low ceilings have formed overnight along the North Coast in the wake of a cold front. These should lift a hair by mid- morning for mostly MVFR ceilings through much of today. Stratus is building farther offshore as well, and when combined with the light northerly winds expected today, should continue to reinforce the low clouds. There is a chance that these may scatter out this afternoon, but confidence is currently low as to whether this will occur or not. Regardless, low clouds should return to the coast tonight for another round of impacted ceilings. For inland areas, scattered showers may continue to impact flying conditions through mid- morning, however widespread clearing is expected this afternoon as the front exits to the east and daytime heating mixes out residual low clouds. /TDJ

MARINE. Light northerlies have developed overnight and are expected to continue through tonight across all waters. Winds then go light and variable through Monday before accelerating from the south on Tuesday as another front approaches the coast, possibly reaching SCY levels in the outer waters. Seas will continue to decay today and tomorrow before slightly building again Tuesday in response to the southerlies and a new NW swell filling in.

Additionally, a significant NW swell is expected late in the week in response to a nearly basin- wide cyclone developing and tracking eastward across the Northern Pacific mid- week. Current guidance is showing this swell filling in Thursday and peaking around Friday morning somewhere in the region of 16 ft at 18 seconds, with a few pulses continually reinforcing each other through next weekend. However precise timing of these pulses will likely change as the system develops across the NWPAC. /TDJ

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 9 AM PST this morning for PZZ455-475.



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 11 mi28 min NNW 12 G 16 54°F 55°F1017.4 hPa54°F
ANVC1 - 9416841 - Arena Cove, CA 31 mi56 min WNW 7 G 11 55°F 54°F1017.6 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA36 mi72 minN 010.00 miFair57°F50°F78%1016.4 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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S6SE6SE6SE6SE4CalmS4S4SE3CalmS4CalmS4S5CalmN3CalmCalmCalmCalmCalmCalm
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Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Sun -- 01:41 AM PST     1.89 feet Low Tide
Sun -- 03:38 AM PST     Moonset
Sun -- 07:22 AM PST     Sunrise
Sun -- 07:56 AM PST     5.71 feet High Tide
Sun -- 02:55 PM PST     0.51 feet Low Tide
Sun -- 03:01 PM PST     Moonrise
Sun -- 04:51 PM PST     Sunset
Sun -- 09:14 PM PST     4.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.421.92.333.94.85.55.75.44.73.62.41.40.70.50.81.42.33.13.84.24.13.6

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Sun -- 02:48 AM PST     0.00 knots Slack
Sun -- 03:39 AM PST     Moonset
Sun -- 05:43 AM PST     0.80 knots Max Flood
Sun -- 07:22 AM PST     Sunrise
Sun -- 08:42 AM PST     -0.00 knots Slack
Sun -- 11:43 AM PST     -1.15 knots Max Ebb
Sun -- 03:01 PM PST     Moonrise
Sun -- 03:45 PM PST     0.00 knots Slack
Sun -- 04:51 PM PST     Sunset
Sun -- 06:40 PM PST     0.87 knots Max Flood
Sun -- 09:44 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.7-0.5-0.30.10.50.70.80.70.3-0.2-0.7-1.1-1.1-1-0.7-0.40.10.60.80.90.70.4-0.1-0.5

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 (16,3,4,5)
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Ground Weather Radar Station Eureka, CA
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