Friday, February23, 2018 L-36.com


Marine Weather and Tides
Calpella, 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 6:50AMSunset 6:01PM Friday February 23, 2018 12:33 PM PST (20:33 UTC) Moonrise 11:42AMMoonset 1:12AM Illumination 61% Phase: Waxing Gibbous; 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 Point Arena To Point Reyes To 10 Nm- 815 Am Pst Fri Feb 23 2018
.small craft advisory in effect through Saturday morning...
Today..NW winds 15 to 25 kt. Wind waves 5 to 7 ft. W swell 4 to 5 ft at 17 seconds.
Tonight..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 4 to 5 ft at 16 seconds.
Sat..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 4 to 5 ft at 15 seconds. Slight chance of showers in the afternoon.
Sat night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 3 to 5 ft at 15 seconds.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft at 15 seconds. Slight chance of showers.
Mon..NW winds 20 to 30 kt. Wind waves 5 to 7 ft. NW swell 7 to 9 ft. Chance of showers, then slight chance of showers.
Tue..NW winds 20 to 30 kt. Wind waves 5 to 7 ft. NW swell 8 to 10 ft. Slight chance of showers.
PZZ500 815 Am Pst Fri Feb 23 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gale-force northerly winds over the outer waters will subside later this morning. High pressure over the eastern pacific will continue to produce moderate to strong winds over the coastal waters into the weekend.

7 Day Forecast for Marine Location Near Calpella, CA
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location: 39.21, -123.35     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 231246
afdeka
area forecast discussion
national weather service eureka ca
446 am pst Fri feb 23 2018

Synopsis Temperatures will remain slightly below normal during
the next 7 days as a series of storm systems move south across the
region. Showers will be likely with each system, and mountain snow
may accumulate at highway pass level Sunday night into Monday.

Discussion Friday morning surface observations show winds
weakening in the vicinity of eureka arcata, which is allowing
temperatures to fall toward hard freeze values. Similar conditions
were observed near crescent city north to smith river. Elsewhere,
interior valley temperatures were in the teens and 20s. After
sunrise, abundant sunshine will aid in temperatures moderating
into the 40s and 50s.

The next upper disturbance to impact the region is forecast to
arrive on Saturday. This feature will aid in generating showers,
first across the coast during Saturday morning, and then interior
areas during midday into early afternoon. The greatest precip
amounts from 0.05-0.3 inches, will occur from central humboldt
northward across del norte county. Elsewhere, precip totals will
be less than 0.05 inch. In addition, snow levels are forecast to
rise to around 2500 feet by afternoon. Thus, impactful snow
accumulations are not expected due to the combination of light qpf
and rising freezing levels.

A stronger storm system, characterized by 700 mb temperatures
near -17c, and 500 mb temperatures at or below -30c, will dig
south across NRN ca Sunday night into Monday. Snow levels near
2000 feet will be probable as a result, and could fall as low as
1000 feet. In addition, model guidance shows the digging trough
yielding a substantial amount of deep-layer upward vertical
motion augmented by a convective environment and westerly upslope
flow. Thus, the potential for impactful snowfall affecting
mountain travel corridors exists. In addition, forecast soundings
and model hail guidance supports small hail along the coast.

Beyond Monday... Multi-model consensus supports continued troughing
over the WRN conus. However, timing position differences in trough
evolution become large by Friday day 7, which yields low forecast
confidence.

Aviation Skies are clear at the major terminals this morning.

There are some lingering low clouds over portions of the interior.

More low clouds are evident in the strong N flow over the outer
coastal waters. Winds through Thursday evening remained fairly
strong, but they have dropped off and decoupled over the past
several hours. Winds will continue to gradually subside in the
lower levels, and low-level wind shear was not included in the
latest TAF package. Clouds will begin to enter the area from the
nw late in the afternoon and during the evening as the next front
approaches the area. Have included light rain in the forecast for
kcec and kacv by late evening.VFR conditions are expected to
continue at kuki. Sec

Marine N winds will continue to diminish today, but advisory
level winds will continue over the S waters through the day. After
a period of sub-advisory winds this weekend (albeit just barely
in some areas), N winds are forecast to increase again on Monday
with gales possible over the S outer waters by Monday night.

Combined seas will build up to 17 feet in the outer waters during
this time period.

A small NW swell at around an 18 second period this morning will
gradually decay through the day on Sunday. A more substantial nw
swell will impact the area through the forecast timeframe, with
periods 8 to 10 seconds through Saturday, then 12 to 14 seconds on
Sunday into next week. Sec

Eka watches warnings advisories
Ca... Hard freeze warning until 9 am pst this morning for caz101-103-
109.

Northwest california coastal waters... Small craft advisory until 9
am pst this morning for pzz450-470.

Hazardous seas warning until 6 am pst early this morning for
pzz450-455.

Small craft advisory until 6 pm pst this evening for pzz455.

Gale warning until 6 am pst early this morning for pzz475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 28 mi45 min WNW 8.9 G 15 46°F 48°F1030.9 hPa
46263 32 mi93 min 50°F8 ft
46014 - PT ARENA - 19NM North of Point Arena, CA 33 mi33 min NNW 14 G 18 1031.3 hPa (+0.0)

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA9 mi37 minNNE 610.00 miFair49°F19°F31%1029 hPa

Wind History from UKI (wind in knots)
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Last 24hr5NW8NW8NW12NW11
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NE5CalmCalmCalmCalmNW3CalmCalmN6NE6
1 day agoCalmW6NW6W7W6CalmN8
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N7CalmCalmCalmCalmNW3CalmNW4N5NW11N6NE3CalmNE5N6NW11
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2 days agoCalm4NW85NW63E3CalmCalmCalmCalmCalmCalmNW4CalmCalmCalmCalmCalmE3N3CalmSE33

Tide / Current Tables for Albion, California
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Albion
Click for Map
Fri -- 12:09 AM PST     First Quarter
Fri -- 01:13 AM PST     Moonset
Fri -- 04:15 AM PST     5.69 feet High Tide
Fri -- 06:56 AM PST     Sunrise
Fri -- 11:21 AM PST     0.59 feet Low Tide
Fri -- 11:43 AM PST     Moonrise
Fri -- 06:01 PM PST     Sunset
Fri -- 06:21 PM PST     3.90 feet High Tide
Fri -- 11:00 PM PST     2.68 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.23.94.75.35.75.6542.91.810.60.71.11.72.43.13.63.93.83.63.22.82.7

Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Fri -- 12:09 AM PST     First Quarter
Fri -- 01:14 AM PST     Moonset
Fri -- 04:12 AM PST     5.90 feet High Tide
Fri -- 06:56 AM PST     Sunrise
Fri -- 11:29 AM PST     0.75 feet Low Tide
Fri -- 11:43 AM PST     Moonrise
Fri -- 06:01 PM PST     Sunset
Fri -- 06:06 PM PST     3.91 feet High Tide
Fri -- 10:35 PM PST     2.68 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.34.155.65.95.85.24.23.12.11.20.80.81.21.82.63.33.73.93.83.432.72.7

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 (15,3,4,5)
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Ground Weather Radar Station Beal AFB, 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.