Saturday, February29, 2020
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Marine Weather and Tides
Caspar, CA

Version 3.4
NOTICE
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 6:45AMSunset 6:05PM Friday February 28, 2020 9:53 PM PST (05:53 UTC) Moonrise 9:31AMMoonset 11:01PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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- 832 Pm Pst Fri Feb 28 2020
.small craft advisory in effect through late Saturday night...
.gale watch in effect from late Saturday night through late Sunday night...
Tonight..N winds 10 to 20 kt. Gusts up to 30 kt. Waves N building to 9 ft at 9 seconds...and nw 9 ft at 18 seconds. Slight chance of rain.
Sat..NW winds 15 to 25 kt. Waves N 9 ft at 9 seconds...and nw 10 ft at 17 seconds.
Sat night..N winds 15 to 25 kt. Waves N 10 ft at 9 seconds... And nw 10 ft at 16 seconds.
Sun..N winds 20 to 30 kt. Waves N 11 ft at 9 seconds...and nw 8 ft at 15 seconds.
Sun night..N winds 20 to 30 kt. Waves N 12 ft at 10 seconds... And nw 8 ft at 15 seconds.
Mon..N winds 15 to 25 kt. Waves N 9 ft at 9 seconds...and nw 6 ft at 13 seconds.
Tue..N winds 10 to 20 kt. Waves N 8 ft at 8 seconds...and nw 8 ft at 18 seconds.
Wed..N winds 10 to 20 kt. Waves N 5 ft at 7 seconds...and nw 5 ft at 14 seconds.
PZZ400 832 Pm Pst Fri Feb 28 2020
Synopsis for northern california waters..Fresh to strong northerlies will persist through Saturday night. A northwest swell will also move through the waters on Saturday. Northerlies will likely reach gale force on Sunday over portions of the waters...resulting in steep short-period seas.


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 282249 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 249 PM PST Fri Feb 28 2020

SYNOPSIS. A weak cold front will bring cooler and breezier conditions for the weekend. A few light rain showers or drizzle are possible for Humboldt and Del Norte county. A gradual warming trend is expected to resume Monday through Thursday, with no rain expected. There is a chance for some light rain late next week.

DISCUSSION. A weak frontal boundary is approaching the NW California coast this afternoon. So far this has increased the depth of the marine layer along the coast and is keeping temperatures cooler in the inland areas. High clouds have also spread across the area. Late tonight this frontal boundary is expected to bring some light rain to Del Norte county and some drizzle is possible along the coast. Rainfall amounts of up to a tenth of inch are possible in the mountains of Del Norte county. Once the front moves out of the area clearing skies are expected in the afternoon. This is expected to mix out the marine layer.

Saturday afternoon and evening the colder air moves overhead. There is the potential for a thunderstorm or two over the mountains of Del Norte county and over the waters. For now just have them over the mountains of Del Norte county. The lapse rates look good and there is some instability, but there may not be enough moisture to generate many showers.

Saturday night into Sunday showers will diminish and northerly winds will increase as the trough moves out of the area and high pressure builds in. Sunday morning will be chilly with the coldest air aloft, but the winds may keep temperatures from bottoming out too much. Still frost is expected along the coast and freezing temperatures are expected in Mendocino county. With the growing season starting in these areas we may need to issue frost advisories or freeze warnings. Sunday afternoon will be cool and breezy along the coast with highs only in the low 50s. Inland areas may not make it out of the 50s. Sunday night the airmass starts to warm, but winds will be lighter so it may be colder than Sunday morning. Monday through Thursday a warming trend is expected with highs returning to the 60s and low 70s in the inland areas by Tuesday.

Next Friday there is the potential for some light rain, but confidence is low on this. There are some indications we could be returning to more normal rainfall for next weekend and the following week, but confidence is lower than normal at this point. MKK

AVIATION. A robust marine layer remained persistent along the North Coast today with pockets of BINOVC (breaks in overcast) mainly south of Cape Mendocino. The marine stratus had a significant impact on the coastal terminals with conditions frequently reported in IFR and LIFR conditions. Mostly IFR Cigs and MVFR Vis prevailed in the afternoon. An approaching front may bring areas of lifting Cigs in the evening, and light drizzle/rain in the mid-latter evening . especially north of Trinidad. /TA

MARINE. Northerlies will increase in the wake of a passing cold front tonight/early Saturday. A tightening pressure gradient will allow northerlies to further increase to Gale Force in strength on Sunday, mostly over the outer waters. Short-period seas will build in response to the increasing northerlies. Small Craft conditions will be likely across all of the zones starting early on Saturday. Gale watches and Small Craft Advisories have been issued. Otherwise, a northwest swell will continue to decay as yet another northwest swell moves through the waters tonight and into Saturday.

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory from 7 AM Saturday to 3 AM PST Monday for PZZ450.

Gale Watch from Sunday afternoon through Sunday evening for PZZ470.

Small Craft Advisory from 7 AM Saturday to 1 PM PST Sunday for PZZ470.

Gale Watch from late Saturday night through late Sunday night for PZZ455-475.

Small Craft Advisory until 3 AM PST Monday for PZZ455.

Small Craft Advisory until 3 AM PST Sunday 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 mi33 min NW 21 G 29 51°F 52°F1020.5 hPa48°F
ANVC1 - 9416841 - Arena Cove, CA 31 mi53 min NW 5.1 G 11 49°F 50°F1020.8 hPa (-0.4)

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA36 mi2 hrsN 010.00 miFair56°F37°F49%1018.9 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm--Calm--3SE3W7NW8--W3S3CalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmE3CalmSE5NW3N5CalmN3Calm
2 days agoCalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN6NW3CalmCalmCalmCalm

Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Sat -- 02:09 AM PST     5.16 feet High Tide
Sat -- 06:48 AM PST     Sunrise
Sat -- 08:51 AM PST     1.40 feet Low Tide
Sat -- 09:58 AM PST     Moonrise
Sat -- 03:01 PM PST     3.77 feet High Tide
Sat -- 06:07 PM PST     Sunset
Sat -- 08:27 PM PST     2.33 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.24.95.254.53.72.821.51.41.62.12.73.23.63.83.73.42.92.62.42.42.73.2

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Sat -- 12:03 AM PST     0.62 knots Max Flood
Sat -- 03:01 AM PST     -0.00 knots Slack
Sat -- 06:10 AM PST     -0.93 knots Max Ebb
Sat -- 06:48 AM PST     Sunrise
Sat -- 09:58 AM PST     Moonrise
Sat -- 10:02 AM PST     0.00 knots Slack
Sat -- 12:50 PM PST     0.59 knots Max Flood
Sat -- 04:07 PM PST     -0.00 knots Slack
Sat -- 06:07 PM PST     Sunset
Sat -- 06:35 PM PST     -0.59 knots Max Ebb
Sat -- 09:39 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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0.60.50.30-0.4-0.7-0.9-0.8-0.6-0.3-00.30.50.60.50.30-0.3-0.5-0.6-0.4-0.10.10.3

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 (0,6,7,8)
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Ground Weather Radar Station Eureka, CA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.