Monday, April19, 2021
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Marine Weather and Tides
Caspar, CA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:27AMSunset 7:55PM Monday April 19, 2021 2:54 PM PDT (21:54 UTC) Moonrise 10:41AMMoonset 1:20AM Illumination 55% Phase: First Quarter Moon; Moon at 8 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- 224 Pm Pdt Mon Apr 19 2021
.small craft advisory in effect through Tuesday morning...
.gale warning in effect from Tuesday morning through Tuesday evening...
Tonight..NW winds 15 to 25 kt with localized gusts to around 35 kt. Waves nw 7 ft at 7 seconds...and W 3 ft at 11 seconds. Patchy fog.
Tue..NW winds 20 to 30 kt with gusts to around 40 kt. Waves nw 9 ft at 8 seconds...and W 4 ft at 13 seconds. Patchy fog.
Tue night..NW winds 20 to 30 kt. Waves nw 10 ft at 9 seconds...and W 4 ft at 12 seconds.
Wed..NW winds 15 to 25 kt. Waves N 10 ft at 9 seconds.
Wed night..N winds 10 to 20 kt. Waves N 9 ft at 9 seconds... And nw 3 ft at 11 seconds.
Thu..NW winds 10 to 20 kt. Waves N 7 ft at 8 seconds...and nw 3 ft at 18 seconds.
Fri..NW winds 5 to 15 kt. Waves N 6 ft at 6 seconds.
Sat..S winds 5 to 10 kt. Waves W 4 ft at 10 seconds...and S 3 ft at 19 seconds.
PZZ400 224 Pm Pdt Mon Apr 19 2021
Synopsis for northern california waters..Small craft northerlies will expand from south of cape mendocino to all waters by this evening. Winds will strengthen further across the outer waters and southern inners to gale force during Tuesday, with gusty north winds and steep hazardous seas persisting through mid week.


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 191109 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 409 AM PDT Mon Apr 19 2021

SYNOPSIS. Cool and cloudy conditions will persist along the coast for the next few days. Interior locations will remain sunny and warm, although slightly cooler than in recent days. A passing disturbance will bring patchy drizzle to coastal areas tonight into Tuesday morning, with a few showers possible inland through Tuesday afternoon.

DISCUSSION. Extensive marine stratus and patchy fog are once again present along much of the West Coast this morning as the upper level ridge axis remains directly overhead. Stratus has pushed a little farther up the coastal river valleys of northwest California compared to previous mornings as the marine layer begins to deepen, per current profiler data. The ridge will flatten out later today as it is temporarily bisected by an approaching shortwave trough poised to move over the CA/OR border region tonight. Sensible weather impacts from this development will initially be somewhat negligible as coastal areas remain cool and cloudy while interior locations stay sunny and warm, albeit 5 to 10 degrees cooler than Sunday in most locations. However, the approaching trough will serve to continue to deepen the marine layer over time as flow shifts back onshore. This will allow the marine influence to penetrate farther inland and quell the recent fire weather concerns given slightly cooler temperatures and higher humidity values than recent days. A deeper marine layer coupled with orographically induced lift on the windward side of the King Range plus weak forcing from the approaching trough will create an ideal setup for drizzle later this evening through Tuesday morning, which may be enough to squeeze out a few hundredths of an inch of precipitation along the Humboldt Coast tonight. Elsewhere, the passing shortwave will also be capable of supporting a few showers over the higher terrain of Trinity and eastern Mendocino County through Tuesday afternoon, but models have substantially backed off of thunder potential as most of the forcing looks to pass through earlier in the day on Tuesday.

Beyond Tuesday, ridging will gradually build back in over the latter half of the week and support continued dry conditions, with warmer than normal temperatures across the interior while the marine layer continues to keep coastal locations cool and cloudy. Ensemble guidance and cluster analysis continue to point to an increasing probability of large scale troughing developing over the West Coast towards the weekend, lending hope for some late season beneficial wetting rain across NW California even as details remain elusive. /CB

AVIATION. Solid LIFR ceilings were observed along much of the coast early Monday morning, but visibilities were in the VFR category, and are expected to remain so during the rest of the morning. Short-term model guidance indicates ceilings may rise slightly this afternoon, and perhaps become broken for an hour or two. However, a deep saturated marine layer is forecast to spread inland this evening/tonight across coastal Humboldt/Del Norte Counties as well as portions of Mendocino County. Locally strong ascent due to strengthening low-level northwesterly flow near and upwind from the King Range will also favor drizzle across much of the Humboldt Bay area tonight, including KACV. Farther south at KUKI, the marine layer is forecast to be sufficiently deep to spread east across the coastal hills/ridges, such that IFR/LIFR ceilings may develop across Ukiah toward 12Z/20th.

Garner

MARINE. Little change in the marine forecast is expected. Surface high pressure over the NERN PAC is on track to strengthen during the next 24 hours. The pressure gradient will tighten in the vicinity of coastal NWRN CA and aid in the development of small craft northerlies across all coastal waters by Monday evening. Winds are forecast to strengthen further to gale force over the outer waters by Tuesday afternoon. Gusty north winds and steep hazardous seas will persist through Wednesday. Winds and seas are then forecast to weaken during the second half of the week.

Garner

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory from 2 AM Tuesday to 11 PM PDT Wednesday for PZZ450.

Small Craft Advisory from 5 PM this afternoon to 11 AM PDT Tuesday for PZZ470.

Gale Warning from 11 AM Tuesday to 11 PM PDT Wednesday for PZZ470.

Small Craft Advisory from 11 AM this morning to 11 PM PDT Wednesday for PZZ455.

Small Craft Advisory until 5 AM PDT Tuesday for PZZ475.

Gale Warning from 5 AM Tuesday to 11 PM PDT Wednesday 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 11 mi34 min 14 G 18 1021.2 hPa
ANVC1 - 9416841 - Arena Cove, CA 31 mi54 min WNW 6 G 9.9 53°F 1020.6 hPa (-1.1)

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA36 mi58 minNNW 710.00 miFair80°F39°F23%1016.8 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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N9CalmCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW125N8N7
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NW9NW7NE4CalmCalmCalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW10
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N10NE5SW4CalmW3CalmCalmCalmNW3CalmCalmCalmCalmCalmCalmCalmSE346

Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Mon -- 02:19 AM PDT     Moonset
Mon -- 03:49 AM PDT     4.68 feet High Tide
Mon -- 06:31 AM PDT     Sunrise
Mon -- 11:25 AM PDT     0.20 feet Low Tide
Mon -- 11:40 AM PDT     Moonrise
Mon -- 07:23 PM PDT     4.00 feet High Tide
Mon -- 07:57 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.94.34.64.74.53.93.12.11.20.60.20.30.61.21.92.63.33.8443.83.63.4

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Mon -- 02:19 AM PDT     Moonset
Mon -- 02:21 AM PDT     0.31 knots Max Flood
Mon -- 04:41 AM PDT     -0.00 knots Slack
Mon -- 06:31 AM PDT     Sunrise
Mon -- 08:34 AM PDT     -0.96 knots Max Ebb
Mon -- 11:40 AM PDT     Moonrise
Mon -- 12:48 PM PDT     0.00 knots Slack
Mon -- 04:00 PM PDT     0.69 knots Max Flood
Mon -- 07:34 PM PDT     -0.00 knots Slack
Mon -- 07:57 PM PDT     Sunset
Mon -- 09:28 PM PDT     -0.36 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.20.30.30.1-0.1-0.3-0.7-0.9-0.9-0.7-0.5-0.20.10.40.60.70.60.50.2-0.1-0.3-0.3-0.2

Weather Map
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GEOS Local Image of CentralWestCoast    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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