Thursday, October28, 2021
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Marine Weather and Tides
Boonville, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 7:35AMSunset 6:17PM Thursday October 28, 2021 2:04 PM PDT (21:04 UTC) Moonrise 11:29PMMoonset 1:45PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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- 936 Am Pdt Thu Oct 28 2021
.small craft advisory in effect through Friday morning...
Today..NW winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Wind waves 3 to 4 ft. NW swell 9 to 11 ft at 16 seconds.
Tonight..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 7 to 9 ft at 15 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 5 to 7 ft at 13 seconds.
Fri night..NW winds 10 to 15 kt. Wind waves around 2 ft. W swell 6 to 8 ft at 12 seconds.
Sat..NW winds around 5 kt. Wind waves 1 ft. NW swell 6 to 8 ft at 11 seconds.
Sat night..W winds around 5 kt. Wind waves 1 ft. NW swell 4 to 6 ft at 12 seconds. Patchy fog.
Sun..SE winds 10 to 15 kt. Wind waves 1 ft. NW swell 3 to 5 ft and nw 2 to 3 ft. Rain likely.
Mon..SE winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 3 to 5 ft and W 4 to 6 ft. Rain likely.
PZZ500 936 Am Pdt Thu Oct 28 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A moderately large, longer period northwest swell has arrived and is outperforming model data by a few feet, with swell heights of 10 to 14 feet at roughly 15 to 17 seconds. This wave energy will bring hazardous conditions for small craft vessels, particularly in the surf zone, near shoals, and at harbor entrances with breakers of 15 to 20 feet. This wave energy will gradually subside later today and into tomorrow. Breezy to locally gusty northwest winds will persist during the day over in our outer waters and occasionally along some of our inner water zones.


7 Day Forecast for Marine Location Near Boonville, CA
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location: 38.89, -123.38     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 281224 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 524 AM PDT Thu Oct 28 2021

SYNOPSIS. Warm and dry conditions are expected across the area today today. Showers will spread into the area from the north late tonight and Friday with a few thunderstorms across the interior Friday afternoon into Saturday morning. Thereafter, a series of frontal systems are forecast to impact the area Monday and again Wednesday, bringing more light to moderate rain.

DISCUSSION. Low clouds and patchy fog cover many inland valleys and portions of the coastal plain this morning. This cloudiness is expected to gradually erode after sunrise, giving way to partly to mostly sunny skies across most of the area by afternoon. Temperatures will be running around 5 degrees above normal today, leading to a very nice late October day across most of the area.

An upper disturbance and associated frontal system will drop into the area from the NW on Friday and Saturday. This feature will bring scattered showers to the N portion of the area. In addition, cooling temperatures aloft and modest dynamic forcing will bring the threat for isolated thunderstorms across portions of E Del Norte, E Humboldt, and Trinity counties Friday afternoon through Saturday morning. While rainfall amounts are expected to be generally light with this activity, higher rainfall rates are likely in any thunderstorms, especially with the fairly slow storm motions expected beneath the upper low. This may be a localized concern in and near burn scars.

Lingering shower activity on Saturday will likely dissipate quickly as large-scale subsidence occurs behind the departing upper disturbance. Mostly dry weather is anticipated Saturday afternoon through Sunday afternoon beneath an upper ridge. Another upper trough is forecast to move across the NE Pacific Sunday night into Monday. Frontal precipitation will spread eastward across the area and bring another round of beneficial rainfall. Height rises and ridging may occur once again on Tuesday resulting in dry weather, followed by another wet frontal passage during the middle of next week. This highly progressive regime will lead to increasing rainfall timing uncertainties later in the forecast period. /SEC

AVIATION. Low clouds and radiational fog have developed overnight across the interior valleys and coastal plain. Prevailing LIFR conditions with visibility in fog at KCEC an KUKI this morning, while IFR/MVFR with visibility in mist at KACV. Low ceilings will mostly burn off by late morning/early afternoon with the daytime heating and mixing. Otherwise, cloudiness is expected to increase during the evening ahead of a shortwave trough will drop SE into the northern California on Friday. Expect IFR/LIFR in fog and mist to return to the coastal terminals by evening, while conditions at KUKI will likely drop to IFR/MVFR with visibility in mist or fog late tonight into Friday morning. Winds remains relatively light and variable.

MARINE. A mid to long-period west swell around 10 to 13 feet is moving across the waters. Elevated seas will persist through much of the day today followed by a slowly decay by evening through Saturday. A cold front will enter the waters on Friday. The potential for strong northerlies and large, steep waves will increase over the northern waters late Friday afternoon and into Friday evening. Short period wind waves will build across the outer waters in response of the increasing winds, mainly north of Cape Mendocino. Otherwise, unsettled weather conditions on Friday may last into Saturday. Another front will approach late in the weekend, bringing a new round of southerly winds, followed by westerly swell around 10 feet by Monday.

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 6 PM this evening for PZZ450-455-470-475.

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
ANVC1 - 9416841 - Arena Cove, CA 18 mi65 min W 1.9G1.9 60°F 1021.3 hPa (-0.8)
46014 - PT ARENA - 19NM North of Point Arena, CA 39 mi35 min WNW 3.9G5.8 58°F 57°F1021.5 hPa58°F
BDXC1 43 mi119 min 58°F

Wind History for Arena Cove, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA20 mi69 minNW 310.00 miFair71°F54°F55%1020.4 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrN30NW6NW60000000000NW400000000NW3
1 day agoSE6S8S8S7S5S6S5S5SE3S3000000000000N50
2 days ago0SW4
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W94W4000000000000000000SE6

Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Thu -- 07:02 AM PDT     4.43 feet High Tide
Thu -- 07:38 AM PDT     Sunrise
Thu -- 12:05 PM PDT     3.68 feet Low Tide
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:46 PM PDT     Moonset
Thu -- 04:39 PM PDT     4.72 feet High Tide
Thu -- 06:18 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Thu -- 12:31 AM PDT     0.00 knots Slack
Thu -- 03:39 AM PDT     0.73 knots Max Flood
Thu -- 07:15 AM PDT     -0.00 knots Slack
Thu -- 07:38 AM PDT     Sunrise
Thu -- 09:13 AM PDT     -0.41 knots Max Ebb
Thu -- 12:51 PM PDT     0.00 knots Slack
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:46 PM PDT     Moonset
Thu -- 03:17 PM PDT     0.36 knots Max Flood
Thu -- 05:47 PM PDT     -0.00 knots Slack
Thu -- 06:18 PM PDT     Sunset
Thu -- 09:20 PM PDT     -0.98 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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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