Saturday, November18, 2017

Marine Weather and Tides
Shelter Cove, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:07AMSunset 4:56PM Saturday November 18, 2017 11:25 AM PST (19:25 UTC) Moonrise 7:05AMMoonset 5:36PM Illumination 0% Phase: New Moon; Moon at 29 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- 801 Am Pst Sat Nov 18 2017
Today..W winds up to 5 kt. Waves nw 4 ft at 10 seconds.
Tonight..E winds up to 5 kt. Waves nw 4 ft at 11 seconds.
Sun..SE winds up to 5 kt...becoming S 5 to 15 kt. Waves nw 4 ft at 11 seconds.
Sun night..SE winds 10 to 15 kt. Waves S 4 ft at 5 seconds... And nw 3 ft at 12 seconds.
Mon..SE winds 10 to 15 kt. Waves S 5 ft at 7 seconds...and nw 6 ft at 11 seconds.
Tue..SE winds 10 to 15 kt. Waves sw 9 ft at 11 seconds.
Wed..SE winds 5 to 15 kt. Waves se 3 ft at 6 seconds...and sw 8 ft at 12 seconds.
PZZ400 801 Am Pst Sat Nov 18 2017
Synopsis for northern california waters..Generally low seas and light to moderate winds will linger through the weekend. Winds will become southerly late tonight and into Sunday as a storm system approaches the area. This system is expected to bring near gale force winds and steepening seas Sunday night into Monday.

7 Day Forecast for Marine Location Near Shelter Cove, CA
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location: 40.03, -124.07     debug

Area Discussion for - Eureka, CA
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Fxus66 keka 181157
area forecast discussion
national weather service eureka ca
357 am pst Sat nov 18 2017

Synopsis A cool and dry air mass will remain over the area
today with high pressure in place across the area. A front will
will bring moderate rain and strong winds Sunday night and
Monday. Wet and unsettled weather will likely continue through the
middle of next week.

Discussion High pressure remains over the west coast this
morning. Temperature are chilly with most areas seeing
temperatures in the 30s. Added the del norte coast to the frost
advisory. The crescent city airport may not see temperatures drop
to 36 degrees, but protected areas farther inland will likely see
some frost. Fog and low clouds have formed in many of the valleys
keeping temperatures slightly warmer than expected. The exception
to this is parts of trinity county where temperatures have
dropped into the upper 20s. This afternoon sunny skies and mild
temperatures are expected. Tonight there is the potential for
frost again in some areas, although it looks like it will be
slightly warmer than this morning.

Sunday afternoon the next frontal boundary starts to approach the
area. High clouds will start to steam into the area in the
afternoon. Rain is expected to start after midnight Sunday night
in the north and spread south as a warm frontal boundary moves
onshore. The 06z GFS and the 00z ECMWF keep the heaviest rain a
bit farther north. This brings less rain to southern mendocino
county, but more to humboldt and del norte counties. There are
some indications that the models are trending toward this
solution, but there is still model differences location of the
heaviest precip. Trended the QPF up towards the wpc forecast,
although numbers are still below what they have. Due to the amount
of moisture transport shown in the models expect the higher qpf
amounts are likely. There could initially be some low snow levels
in eastern trinity county, but these will likely rise quickly as
this is a very warm system.

Tuesday through Thursday the flow pattern remains out of the
southwest. Overall it looks like there will be periods of rain
with this fairly moist flow in place. There continues to be models
differences in the details of this system. It does look like
these systems will be fairly warm keeping snow levels above most
passes through the week. There is some model agreement that the
area will start to dry out on Friday. Mkk

Aviation The forecast has been tricky this morning for kuki
as the site has been reporting a variety of visibilities due to
shallow fog formation. Luckily temperatures have not fallen below
freezing there but with several more hours of darkness and cooling
it is possible that kuki and other interior terminals along river
valleys could see patches of freezing fog. These areas of fog will
be short lived though as the Sun rises and erodes it. Once that
occurs, all of northwest california will seeVFR conditions.

Saturday night's forecast looks like it should be similar to the
previous night. Kuki and other valley terminals can expect to see
conditions bounce betweenVFR to lifr due to patchy shallow fog

Marine Low seas and light to moderate northerly winds are
forecast for today as we await the arrival of the next storm system.

Winds will start to shift to the south later tonight and into Sunday
morning as the storm system advances towards the pacific northwest.

Near gale force gusts are expected for the northern outer waters by
late Sunday night while other zones experience winds just below gale
threshold. Steep seas will be generated from these winds which
combined with another fresh northwesterly swell will allow for a
chaotic sea state.

Beyond Monday models have been struggling with the forecast. The
latest guidance suggests that southerly winds and steep seas will
remain in the forecast through Wednesday or Thursday.

Eka watches warnings advisories
Ca... Frost advisory until 8 am pst this morning for caz101>106-109-

Freeze warning until 8 am pst this morning for caz102-104>106-

Northwest california coastal waters... None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46213 - Cape Mendocino, CA (094) 40 mi34 min 57°F6 ft
46263 47 mi86 min 56°F5 ft

Wind History for North Spit, Humboldt Bay, CA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fortuna Rohnerville Airport, CA36 mi51 minSSE 710.00 miFair46°F41°F82%1024.4 hPa

Wind History from FOT (wind in knots)
1 day ago------E5E5SE4SE4SE5SE4SE4SE5SE5SE4S4SE3CalmSE4S4SE6SE6SE6SE4S4NW3
2 days agoSE14SE19

Tide / Current Tables for Shelter Cove, California
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Shelter Cove
Click for Map
Sat -- 03:42 AM PST     New Moon
Sat -- 04:15 AM PST     2.38 feet Low Tide
Sat -- 07:04 AM PST     Moonrise
Sat -- 07:05 AM PST     Sunrise
Sat -- 10:16 AM PST     6.37 feet High Tide
Sat -- 04:57 PM PST     Sunset
Sat -- 05:16 PM PST     -0.32 feet Low Tide
Sat -- 05:35 PM PST     Moonset
Sat -- 11:53 PM PST     4.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
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Sat -- 02:03 AM PST     -0.76 knots Max Ebb
Sat -- 03:42 AM PST     New Moon
Sat -- 05:28 AM PST     0.00 knots Slack
Sat -- 07:06 AM PST     Moonrise
Sat -- 07:07 AM PST     Sunrise
Sat -- 08:13 AM PST     0.82 knots Max Flood
Sat -- 11:04 AM PST     -0.00 knots Slack
Sat -- 02:11 PM PST     -1.34 knots Max Ebb
Sat -- 04:57 PM PST     Sunset
Sat -- 05:36 PM PST     Moonset
Sat -- 06:10 PM PST     0.00 knots Slack
Sat -- 09:12 PM PST     1.07 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of CentralWestCoast    EDIT

Wind Forecast for Eureka, CA (14,3,4,5)
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Ground Weather Radar Station Eureka, CA
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weather_mapweather_map weather_map

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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 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 numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at 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.