Thursday, September24, 2020
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Marine Weather and Tides
Anchor Bay, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:01AMSunset 7:07PM Thursday September 24, 2020 4:05 PM PDT (23:05 UTC) Moonrise 2:21PMMoonset 11:50PM Illumination 52% 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 208 Pm Pdt Thu Sep 24 2020
.small craft advisory in effect through late Friday night...
Rest of today..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 10 to 12 ft at 16 seconds and S around 2 ft at 11 seconds.
Tonight..NW winds 15 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. W swell 11 to 12 ft at 16 seconds and S around 2 ft at 17 seconds.
Fri..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. NW swell 10 to 12 ft at 15 seconds and S around 2 ft at 18 seconds.
Fri night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 5 ft. NW swell 9 to 11 ft at 14 seconds and S around 2 ft at 18 seconds.
Sat..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 4 to 5 ft. NW swell 7 to 9 ft at 13 seconds and sw around 2 ft at 17 seconds.
Sat night..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 6 to 7 ft. NW swell 7 to 9 ft at 11 seconds and sw around 2 ft at 16 seconds.
Sun..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 1 to 2 ft. NW swell 6 to 7 ft and sw around 2 ft.
Mon..NW winds up to 10 kt. Wind waves 1 ft. NW swell 6 to 7 ft and sw around 2 ft.
PZZ500 208 Pm Pdt Thu Sep 24 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light northwest winds the rest of the afternoon as a weak frontal system moves through. Locally stronger winds are expected along the big sur coast south of point sur. Winds will then increase across the waters tonight and tomorrow in the post frontal environment with the strongest winds still forecast along the big sur coast. A larger long period northwest swell will continue through tomorrow with swell heights of 9 to 12 feet at periods of 14 to 17 seconds through tomorrow. SWell heights and periods then expected to quickly diminish.


7 Day Forecast for Marine Location Near Anchor Bay, CA
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location: 38.82, -123.68     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 242220 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 320 PM PDT Thu Sep 24 2020

SYNOPSIS. Tonight will be dry with only patchy coastal clouds developing. Another weak front will bring increasing clouds and some showers north of Cape Mendocino later Friday and Friday night. A strong ridge of high pressure will result in building inland heat and fire weather concerns this weekend, with very warm temperatures extending to the coast early next week.

DISCUSSION. In the wake of last night's cold front, showers tapered off fairly quickly this morning, with just a few lingering over the mountainous terrain of interior Humboldt, Del Norte, and northwestern Trinity Counties. Cumulus has lingered there this afternoon with daytime heating, but elsewhere skies have cleared, with just some localized patches of marine stratus. This stratus may try to expand a bit overnight, but light offshore winds may limit development, allowing for some partial sunshine for the coast tomorrow morning. However, a weak cold front will approach from the northwest, with increasing clouds and some showers pushing onshore over Del Norte and northern Humboldt County by the late afternoon and evening hours. Rainfall amounts with this front might reach from a tenth to a half inch north of Trinidad, with amounts dropping off quickly to the south and east. Showers should taper off by Saturday morning.

All our attention will then shift toward hot temperatures and fire weather concerns as we head through the weekend into early next week. Surface high pressure will build across the Pacific Northwest through the weekend, while a strong upper-level ridge shifts eastward from the Pacific toward the West Coast. Meanwhile a thermal trough will develop toward the coast. This pattern will favor a shot of northerly winds pushing down the northern Sacramento Valley and out across the North Bay Hills on Saturday night, which will likely clip Lake County. As the flow continues to veer to a more easterly direction on Sunday, some gusty winds will expand northward across our interior ridgetops, carrying increasingly dry air through Monday morning. Winds will then ease off on Monday, as the thermal trough pushes offshore. 100 degree temperatures are likely for many of the interior valleys as the heat peaks on Monday and Tuesday, and some spots may approach that on Sunday as well. The daily record high of 104 in Ukiah on Monday may be in jeopardy.

While this hot, dry, and locally breezy weather will likely result in more active fires and an increased potential for new fire starts, the temperatures and winds will not be extreme like the event earlier this month. Light offshore flow Monday and Tuesday may push any smoke back toward the west, perhaps affecting some coastal areas. Temperatures along the coast may push 80 degrees in some spots Monday or Tuesday. Winds will likely begin to turn back onshore mid to late week, with gradually lowering temperatures, especially near the coast. However, inland temperatures may remain above normal with dry weather continuing through next weekend. The blocking upper level ridge may break down or shift eastward around the first full week of October, but confidence in any rain or substantially cooler temperatures is low at this time. /AAD

AVIATION. Clouds have generally decreased across the area today, with just some scattered to occasionally broken cumulus cloud across the N interior and some patches of low clouds along portions of the coast. Interior clouds should gradually wane overnight, but MVFR conditions in low clouds and local fog can be expected along the coast. /SEC

MARINE. Winds are presently light across the area. Large W to NW swell will be peaking in height this evening, then gradually subsiding on Friday. Winds will become southerly again later tonight and on Friday in advance of another, weaker frontal system. Near gale force northerly winds will be possible this weekend, primarily over the outer waters and the normally wind prone areas across the inner waters such as downwind of Cape Mendocino and around Pt St George. /SEC

BEACH HAZARDS. The large, early season swell will be peaking in height this evening with surf heights up to 18 feet along W and NW facing beaches. The waves may have more run-up than normal due the summer beach bathymetry. Have continued the Beach Hazards Statement addressing this as well as shoaling potential. Surf will gradually subside on Friday. /SEC

FIRE WEATHER. While some light rain will give a tenth to a quarter inch to northern Humboldt and Del Norte later Friday and Friday night, the focus will be on increasingly hot and dry weather later this weekend and early next week. A push of dry northerly winds will spread down the northern Sacramento Valley as high pressure builds in from Oregon Saturday night. These winds may clip portions of Lake County Saturday night. It is now looking like easterly winds should also develop farther north in northeast Mendocino, Trinity, and portions of interior Humboldt county on Sunday, with afternoon humidity dropping into the teens. The combination of locally gusty ridgetop winds, low humidity, and dry fuels may result in locally critical fire weather conditions, mainly across the exposed ridgetops. There is still some question regarding the strength and coverage of these winds, but we do not expect this event to be close to the magnitude of the the fire weather event around September 7th through 9th. Winds will ease on Monday, but hot and dry conditions will persist for much of northwest California, with no rain in sight through the next weekend. /AAD

EKA WATCHES/WARNINGS/ADVISORIES. CA . Beach Hazards Statement through late tonight for CAZ101-103-104- 109.

Fire Weather Watch from late Saturday night through Monday morning for CAZ212-277-283.

Fire Weather Watch from Saturday evening through Monday morning for CAZ264.

NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 6 AM PDT Saturday for PZZ450-470.

Small Craft Advisory until 6 PM PDT Friday 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
ANVC1 - 9416841 - Arena Cove, CA 7 mi48 min WNW 8 G 14 66°F 54°F1017.8 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 32 mi26 min NNW 14 G 18 64°F1017.5 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 44 mi26 min WNW 16 G 19 59°F 55°F1016.4 hPa59°F

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA34 mi10 minNW 11 G 1810.00 miFair79°F48°F34%1014.8 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrN9N9N8NW10NW5NW8NW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm4N9N6NW7
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1 day agoN96N10N5N8CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm34N9W10W6
2 days ago65
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N9N5N7CalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalm4N10N10N9

Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Thu -- 06:52 AM PDT     4.57 feet High Tide
Thu -- 07:04 AM PDT     Sunrise
Thu -- 11:53 AM PDT     3.22 feet Low Tide
Thu -- 03:21 PM PDT     Moonrise
Thu -- 05:28 PM PDT     5.74 feet High Tide
Thu -- 07:07 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.41.1233.84.44.64.443.63.33.23.43.94.65.35.75.75.24.33.11.90.9

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Thu -- 12:47 AM PDT     0.00 knots Slack
Thu -- 03:59 AM PDT     0.93 knots Max Flood
Thu -- 07:05 AM PDT     Sunrise
Thu -- 07:19 AM PDT     -0.00 knots Slack
Thu -- 09:26 AM PDT     -0.48 knots Max Ebb
Thu -- 12:53 PM PDT     0.00 knots Slack
Thu -- 03:21 PM PDT     Moonrise
Thu -- 03:35 PM PDT     0.56 knots Max Flood
Thu -- 06:20 PM PDT     -0.00 knots Slack
Thu -- 07:07 PM PDT     Sunset
Thu -- 09:41 PM PDT     -1.16 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.40.10.60.80.90.80.60.1-0.3-0.5-0.5-0.4-0.200.30.50.50.40.1-0.3-0.8-1.1-1.2-1

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
Ground Weather Radar Station Sacramento, CA
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