Monday, November20, 2017 L-36.com


Marine Weather and Tides
Caspar, 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 7:01AMSunset 4:55PM Monday November 20, 2017 5:35 AM PST (13:35 UTC) Moonrise 8:53AMMoonset 6:57PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 240 Am Pst Mon Nov 20 2017
.small craft advisory in effect through this afternoon...
Today..SE winds 10 to 20 kt with gusts to around 30 kt. Waves S 6 ft at 7 seconds...and nw 5 ft at 10 seconds. Rain.
Tonight..SE winds 10 to 15 kt. Waves S 5 ft at 6 seconds... And nw 5 ft at 10 seconds. Chance of rain.
Tue..SE winds 10 to 15 kt. Waves S 5 ft at 6 seconds...and W 4 ft at 11 seconds. Slight chance of rain.
Tue night..SE winds 5 to 15 kt. Waves S 4 ft at 7 seconds... And W 7 ft at 11 seconds.
Wed..SE winds 5 to 10 kt. Waves S 3 ft at 6 seconds...and sw 8 ft at 12 seconds.
Thu..SW winds up to 5 kt. Waves sw 2 ft at 5 seconds...and sw 8 ft at 11 seconds.
Fri..N winds up to 5 kt. Waves W 7 ft at 12 seconds.
PZZ400 240 Am Pst Mon Nov 20 2017
Synopsis for northern california waters..Fresh to strong south winds will hold over the area today. NEar gale force gusts will last through the morning for the northern outer waters and around and north of cape mendocino. Steepening seas will continue build in response to these winds. Winds and seas will remain elevated through mid week.

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 201240
afdeka
area forecast discussion
national weather service eureka ca
440 am pst Mon nov 20 2017

Synopsis Periods of moderate to heavy rain area expected
across the area today. Rain will diminish tonight and become light
by Tuesday. However, the potential for wet and unsettled weather
will likely continue through late week.

Discussion A moderate atmospheric river is bringing moderate to
heavy rain to much of the area this morning. Satellite estimates
are showing a plume of moisture with origins in the tropics aimed
at the coast. Pwats in this plume are 1.5 to 2 inches. This is a
very warm airmass with freezing levels rising to over 10,000 feet.

A wave moved onshore in del norte and northern humboldt county
early this morning bringing 1.25 to 1.75 inches of rain over the
higher terrain. This will slowly drift south and weaken this
morning. This is expected to bring a short break in the heavier
rain this morning along the humboldt and del norte coast. This
afternoon heavier rain is expected again as the next wave moves
onshore.

Tonight models are in good agreement on the main plume of moisture
drifting to the north of the area. A very warm and moist airmass
is expected to persist over the area on Tuesday. This will keep
clouds and some occasional rain around as a couple of weak
shortwaves move through the moist southwest flow. Rainfall amounts
will be fairly light. Clouds are expected to persist and fog is
possible as well. If one of these shortwaves move slightly farther
south or is stronger than expected there could be quite a bit more
rain than currently expected.

Wednesday and Thursday the pattern looks to remain fairly
consistent with a warm moist airmass over the area. There will be
some weak shortwaves moving through. These are expected to bring
periods of light rain or drizzle to much of the area. This will
keep surface temperatures warm and there may patchy fog in some
locations.

Thursday night into Friday morning it looks like a frontal
boundary will push through. This is expected to bring an
additional round of rain, although it looks like it will mainly be
focused on humboldt and del norte counties. Behind this boundary
there is decent agreement that Friday will generally dry across
the area, at least in the afternoon. There may be some sunshine as
well.

Another round of rain is expected at some point on the weekend.

The models currently have stronger system moving north into
british columbia with only the trailing front reaching northern
ca. This would bring moderate rainfall amounts to the area.

Confidence is low on the exact evolution of this system due to
model differences. Mkk

Aviation The storm system has arrived this morning and with it we
have seen the TAF sites report MVFR conditions with pockets of ifr
when heavier showers have rolled through. Look for these conditions
to continue through the morning and into the early afternoon hours
with chances waning slighlty for the evening and overnight hours.

There is some uncertainty as to how dry or wet we'll be tonight and
into Tuesday as models show additional waves of moisture. Current
thinking is that if we get light to moderate rain, we'll likely see
MVFR conditions prevail. Additionally, the TAF package will continue
to carry low level wind shear for the sites.

Marine Fresh to strong southerly winds are forecast for today
with near gale force gusts expected for the northern outer waters.

This will allow for steep southerly wind driven waves, which
combined with a west-northwesterly swell, will yield a confused sea
state. These southerly winds and steep seas will continue through
the middle of the week with weaker winds and lower seas expected
beyond then.

Eka watches warnings advisories
Ca... Flood watch through this evening for caz102-104>108.

Northwest california coastal waters...

small craft advisory until 4 pm pst Wednesday for pzz470.

Small craft advisory from 4 am early this morning to 4 pm pst
this afternoon for pzz450-455.

Small craft advisory until 4 am pst Wednesday for pzz475.

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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 mi35 min SSE 21 G 25 1015.1 hPa (-1.0)
ANVC1 - 9416841 - Arena Cove, CA 31 mi47 min ESE 11 G 19 57°F 56°F1016.7 hPa

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, CA36 mi1.7 hrsESE 33.00 miLight Rain Fog/Mist49°F46°F93%1017 hPa

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmNE4Calm3S3SW4S3CalmCalmCalmCalmCalmCalmNW5NW3CalmCalmSE4SE3SE4
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmN3W4W4CalmCalmCalmCalmCalmCalmCalmCalmNW3CalmCalmCalmCalm
2 days agoCalmCalmCalmN3CalmN44N3CalmCalmW6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Mon -- 12:37 AM PST     4.54 feet High Tide
Mon -- 05:22 AM PST     2.67 feet Low Tide
Mon -- 07:04 AM PST     Sunrise
Mon -- 08:52 AM PST     Moonrise
Mon -- 11:18 AM PST     5.78 feet High Tide
Mon -- 04:56 PM PST     Sunset
Mon -- 06:24 PM PST     -0.25 feet Low Tide
Mon -- 06:57 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.54.54.23.632.72.83.23.94.75.45.85.653.92.61.30.3-0.2-0.20.41.32.43.4

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Mon -- 01:09 AM PST     -0.00 knots Slack
Mon -- 03:19 AM PST     -0.67 knots Max Ebb
Mon -- 06:41 AM PST     0.00 knots Slack
Mon -- 07:05 AM PST     Sunrise
Mon -- 08:52 AM PST     Moonrise
Mon -- 09:23 AM PST     0.68 knots Max Flood
Mon -- 12:09 PM PST     -0.00 knots Slack
Mon -- 03:26 PM PST     -1.31 knots Max Ebb
Mon -- 04:56 PM PST     Sunset
Mon -- 06:57 PM PST     Moonset
Mon -- 07:25 PM PST     0.00 knots Slack
Mon -- 10:26 PM PST     0.99 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.1-0.4-0.7-0.6-0.4-0.20.10.40.70.60.40.1-0.4-1-1.3-1.3-1-0.6-0.20.30.711

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

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Eureka, CA (8,2,3,4)
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Ground Weather Radar Station Eureka, CA
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weather_mapweather_map weather_map

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Disclaimer:
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 numerious 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.