Friday, March5, 2021
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Marine Weather and Tides
Ukiah, 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 6:37AMSunset 6:11PM Friday March 5, 2021 11:23 AM PST (19:23 UTC) Moonrise 12:48AMMoonset 10:42AM Illumination 54% Phase: Third Quarter Moon; Moon at 22 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 Expires:202101271200;;557945 Fzus76 Kmtr 270624 Mwsmtr Marine Weather Statement National Weather Service San Francisco Ca 1024 Pm Pst Tue Jan 26 2021 Pzz530-531-535-540-545-560-565-570-571-575-576-271200- San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- San Francisco Bay South Of The Bay Bridge-monterey Bay- Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- Coastal Waters From Point Pinos To Point Piedras Blancas California Out To 10 Nm-waters From Point Arena To Point Reyes 10- 60 Nm-waters From Point Reyes To Pigeon Point 10-60 Nm- Waters From Pigeon Point To Point Pinos 10-60 Nm- Waters From Point Pinos To Point Piedras Blancas 10-60 Nm- 1024 Pm Pst Tue Jan 26 2021
.an atmospheric river will drive heavy rain, very steep seas, strong winds, and isolated Thunderstorms through early Wednesday... An atmospheric river will continue to move from north to south over the waters through the coming days and will result in extremely steep fresh southerly seas, storm force gusts in excess of 55kt, and isolated Thunderstorms. The strongest winds will be ahead of and with the frontal passage and heaviest rain will all peak overnight. Winds will subside behind the front on Wednesday but remain locally breezy to gusty, especially for the southern waters. The high winds and rough seas will be capable of causing damage to vessels and loss of life and mariners should avoid these conditions or remain in safe harbor until conditions improve. Any Thunderstorms that form will be capable of producing strong cross winds, dangerous lightning, heavy rainfall with reduced visibility.
PZZ500 841 Am Pst Fri Mar 5 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A cold front continues to approach the coastal waters from the west. Ahead of the front light to moderate southerly winds will prevail. Winds will continue to be strongest over the offshore waters north of point reyes. Rain will accompany the frontal boundary tonight and winds will become northerly by Saturday morning in wake of its passage. Moderate northwest swell will also continue to result in hazardous conditions for small craft through Saturday before subsiding on Sunday. Another low pressure system approaching from the northwest will bring more rain and larger swell early to mid next week.


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 051253 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 453 AM PST Fri Mar 5 2021

SYNOPSIS. A front will spread precipitation across the area this morning. Moderate to heavy rain will be possible with the frontal passage this afternoon and tonight. Snow levels will fall to around 2,000 feet late this afternoon and tonight. A period of relatively drier weather is expected much of Saturday, followed by more rain Saturday night through early next week.

DISCUSSION. This morning water vapor satellite shows a strong upper level trough and associated frontal boundary slowly approaching the area. This has brought strong winds to much of the area overnight. The strongest winds were in Humboldt and Del Norte counties along the ridges and on exposed headlands. These winds will continue through early this morning start to diminish by mid to late morning as the front moves onshore. Meanwhile rain is expected to spread across the area this morning starting in Del Norte county and spreading south and east through the afternoon and reaching Lake county by late afternoon. Early this morning rain may be slow to start in the Humboldt Bay region and Eel river delta due to the strong winds downsloping off the mtns to the south. The heaviest rain will start early in the afternoon on the north coast and spread inland in the late afternoon evening. Rainfall totals are still expected to be around 1 to 2 inches with local amounts over 3 inches in the favored areas of coastal Mendocino, Humboldt and Del Norte counties. Farther south and east amounts will drop off rapidly to less than a half inch.

The NAM model soundings are showing an isothermal layer right around 0C late in the afternoon. The strong dynamics with this front will likely drive snow levels down well below expected levels. Current forecast is for them to drop to 1,500 to 2,000 feet in Humboldt and Del Norte counties. Confidence is low on exactly how quickly these snow levels will come down and how quickly it will accumulate due to the warm ground. For now expect 2 to 6 inches above 2,000 feet in Humboldt and Del Norte counties. Have added Southwest Humboldt to the winter weather advisory for snow above 2,000 feet. The front will continue to weaken as it moves inland and snow amounts will be lower in Trinity county and snow levels may be slightly higher.

Saturday there may be a few showers lingering in the morning, but little to no accumulation is expected. Saturday night the next system moves onto the north coast. Up to a half inch of rain is possible in Del Norte county, but amounts will fall off sharply to the south. Northern Humboldt may see a quarter of an inch with little to no rain in southern Humboldt. Snow levels are generally expected to be around 2,000 to 2,500 feet with this precipitation. Snow amounts of 2 to 4 inches are possible in Del Norte county and may impact Hwy 199 near the collier tunnel. Trinity, Mendocino and Lake counties are expected to see mainly dry weather on Sunday. Depending on the amount of cloud cover there is the potential for frost or freezing conditions. This system quickly moves out of the area on Sunday afternoon and most areas will see a dry afternoon. Trinity, Mendocino and Lake counties are expected to see mainly dry weather on Sunday.

Monday a closed upper level low starts to approach the west coast and slowly meander its way south and east into central or southern CA. The majority of the ensembles are in agreement on this general pattern. This is generally expected to bring rain and snow showers, as well as cool temperatures to the area for Monday and Tuesday. These will likely be fairly intermittent and dependent on individual shortwaves moving around the low. Snow levels are generally expected to be around 2,000 to 3,000 feet. There is also the potential for thunder and small hail below the snow level with this system. Wednesday and even Thursday may see additional showers depending on how quickly this moves out of the area. The ensemble solutions start to diverge on this point and there are some scenarios where showers linger into Friday. MKK

AVIATION. Flying conditions will rapidly deteriorate at the coastal terminals this morning as a strong front moves onshore accompanied by rain and strong southerly winds. This will bring significant LLWS concerns to KCEC and KACV through about 18z before winds rapidly diminish in the wake of the front. VFR conditions are expected to persist through much of the morning as the lower levels of the atmosphere take some time to become saturated, but increasing precipitation intensity will yield widespread MVFR conditions during the afternoon, lasting well into the evening across most of the area. Rain will be much slower to push into the southern half of the area, likely not reaching KUKI until around 00z. Rain will then taper off relatively quickly across the area between 06 and 12z Saturday, bring a return of VFR conditions to the terminals by daybreak. /CB

MARINE. Ongoing strong southerly winds associated with the advancing front are resulting in treacherous conditions across the coastal waters this morning, with widespread gales across all marine zones and even some embedded storm force gusts in the outer waters north of Cape Mendocino. This is driving steep short period seas to go along with a large westerly swell, yielding large and chaotic seas in the 18 to 21 ft range. Passage of the front later this morning will bring improving conditions as winds quickly weaken to light to gentle breezes by the afternoon, with short period seas responding accordingly. Tonight and much of Saturday will thus be characterized by lighter winds and a lingering large westerly swell in the 10-12 ft range, which will likely be sufficient to maintain Small Craft Advisory conditions through the weekend. Winds will begin to increase again later on Saturday ahead of another weaker front, with seas also building as a fresh swell arrives at around 18 ft at 16 seconds on Sunday. Intermittent periods of stronger southerlies will continue to impact the waters into the early part of next week as large scale troughing remains focused over the West Coast. /CB

EKA WATCHES/WARNINGS/ADVISORIES. CA . Winter Weather Advisory from 4 PM this afternoon to 4 AM PST Saturday for CAZ102-104>108.

Wind Advisory until 10 AM PST this morning for CAZ101-102- 104>106.

NORTHWEST CALIFORNIA COASTAL WATERS . Storm Warning until 8 AM PST this morning for PZZ470.

Gale Warning until 9 AM PST this morning for PZZ455-475.

Gale Warning until 6 AM PST early this morning for PZZ450.



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 mi54 min ESE 9.9 G 16 56°F 1020.6 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 41 mi34 min SSE 21 G 27 13 ft1019.8 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA1 mi28 minSE 1010.00 miOvercast56°F43°F62%1021.4 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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S6S7S6S8S5S8S6S5S3NW3N4N5CalmCalmCalm3SE10
1 day agoCalmNW3N94W7NW8NW7CalmCalmE3CalmCalmS4S5N3N3CalmSE4CalmN3CalmN3SE4SE7
2 days agoCalmSE3S4--S7S6N3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3CalmCalmSE3CalmCalmCalm

Tide / Current Tables for Albion, California
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Albion
Click for Map
Fri -- 12:50 AM PST     Moonrise
Fri -- 03:18 AM PST     5.92 feet High Tide
Fri -- 06:41 AM PST     Sunrise
Fri -- 10:24 AM PST     0.18 feet Low Tide
Fri -- 10:43 AM PST     Moonset
Fri -- 05:26 PM PST     3.95 feet High Tide
Fri -- 05:32 PM PST     Last Quarter
Fri -- 06:12 PM PST     Sunset
Fri -- 10:01 PM PST     2.81 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.94.85.55.95.85.24.12.81.60.60.20.30.71.42.233.63.93.93.63.32.92.83

Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Fri -- 12:49 AM PST     Moonrise
Fri -- 03:09 AM PST     6.02 feet High Tide
Fri -- 06:40 AM PST     Sunrise
Fri -- 10:26 AM PST     0.19 feet Low Tide
Fri -- 10:44 AM PST     Moonset
Fri -- 05:17 PM PST     4.05 feet High Tide
Fri -- 05:32 PM PST     Last Quarter
Fri -- 06:12 PM PST     Sunset
Fri -- 10:03 PM PST     2.92 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.155.765.85.24.12.81.60.70.20.30.71.52.33.13.7443.73.43.12.93.1

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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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