Saturday, January19, 2019 L-36.com


Marine Weather and Tides
Samoa, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:35AMSunset 5:19PM Saturday January 19, 2019 7:02 PM PST (03:02 UTC) Moonrise 3:55PMMoonset 6:08AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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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PZZ410 730 pm pdt Tue mar 13 2018 a marine weather statement has been issued for the following areas... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... At 729 pm pdt, doppler radar indicated a shower, capable of producing winds to around 30 knots. This shower was located 9 nm north of cape mendocino, moving northeast at 20 knots. Precautionary/preparedness actions... Water spouts are possible along with stronger Thunderstorms...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. Mariners can expect gusty winds to around 30 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4080 12411 4080 12418 4075 12419 4073 12423 4070 12421 4068 12422 4070 12427 4071 12427 4065 12431 4063 12429 4063 12424 4062 12426 4063 12432 4047 12439 4057 12459 4095 12437 4086 12417 4076 12423 4085 12416 4082 12409
PZZ400 252 Pm Pst Sat Jan 19 2019
Synopsis for northern california waters..A nearly stationary front over the nw portion of the area will begin to move se tonight and Sunday. Winds will shift to nw to N behind the front as high pressure builds over the region. However, lingering W swell will keep combined seas elevated into early next week.


7 Day Forecast for Marine Location Near Samoa, CA
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location: 40.81, -124.19     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 192321
afdeka
area forecast discussion
national weather service eureka ca
321 pm pst Sat jan 19 2019

Synopsis Moderate to locally heavy rain will continue across
portions of northwest california through late tonight, followed
by showers and a few thunderstorms Sunday afternoon and evening.

Showers will dissipate during Monday, and dry mild weather will be
likely during mid to late next week.

Discussion Widespread rain continues across northwest
california this afternoon. The heaviest precipitation remains
focused along a quasi-stationary frontal boundary from northern
portions of humboldt county into del norte county, with lighter
rain falling at points southward into mendocino county. The axis
of the heaviest rainfall will pivot from a ne-sw orientation to
more north-south this evening as a fast moving upper level
disturbance arrives along the coast and begins to displace the
frontal boundary eastward. This will allow moderate to heavy rain
to continue across much of the area into tonight, with a flood
advisory remaining in effect through 12z 4am Sunday.

The eastward movement of the front will usher in a colder and
more unstable air mass for Sunday as an upper level trough
currently amplifying over the eastern pacific moves overhead. This
will signal a shift to a much more showery regime by Sunday
morning. Temperatures aloft will cool to around -30 degrees c at
500 mb and 0 to -2 degrees c at 850 mb by Sunday afternoon, thus
steepening mid level lapse rates and increasing the potential for
a few thunderstorms through Sunday evening. Any storms that do
develop will carry the potential to produce some small hail along
the coast given the cooler temperatures aloft.

Shower activity will begin to taper off Sunday night and linger
through Monday morning before coming to an end Monday afternoon
as the trough departs to the east. This will allow a large upper
level ridge to build over the west coast for the remainder of the
week, likely ushering in a prolonged period of dry conditions and
warmer temperatures lasting through the end of the work week. Cb

Aviation Widespread rains have been persistent over the NW 1 3 of
the area, mainly affecting kcec and at times kacv. The rains have
been the heaviest at kcec. Patchier rains have affected kuki
through the day. Ceilings and visibilities have been quite
variable through the day. Lower ceilings and visibilities have
recently been affecting kacv with denser fog along with the rain.

The latest high resolution guidance indicates heavier rains
impacting the redwood coast including kacv later tonight. Surface
winds have diminished across the area. Models are indicating that
winds above the surface will increase again briefly late tonight,
and have included more wind shear at redwood coast terminals
during that time frame. Sec

Marine A nearly stationary front over the NW portion of the
coastal waters will begin to move SE tonight and become diffuse.

Southerly winds ahead of this feature will gradually diminish before
being replaced by increasing SW to W winds on Sunday. These winds
will increase to small craft advisory criteria over mainly the s
outer waters by late in the day Sunday. Have allowed all small craft
advisories to drop off by mid-morning Sunday except for the S outer
waters. There, winds and seas may briefly drop below advisory
criteria, but feel it will not be enough time to warrant ending the
advisory there. Westerly swell will continue through much of the
period, with periods generally ranging from 12 to 15 seconds. Sec

Hydrology Steady moderate to locally heavy rainfall is forecast
to continue through tonight, and will aid in rises on the smith,
klamath, trinity, redwood creek and mad rivers. No mainstem river
flooding is expected at this time. However, localized flooding of
small streams, creeks, and ponding of water on roadways will be
possible, in addition to mud and rock slides due to periodic heavy
rain. Reference the latest flood watch statement for more
information.

Coastal flooding High astronomical high tides (king tides)
will continue through early next week. Tidal anomalies will
likely aid in minor coastal flooding during the daily late morning
and early afternoon high tides, with the highest astronomical
tides expected on Monday.

Eka watches warnings advisories
Ca... Flood watch through late tonight for caz101>103-105.

Northwest california coastal waters... Small craft advisory until 4
pm pst Monday for pzz450-455-470- 475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 3 mi86 min S 7 G 9.9 56°F 53°F1020.3 hPa
46244 - Humboldt Bay, North Spit, CA 11 mi32 min 54°F10 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 19 mi32 min S 23 G 31 54°F1020 hPa
46213 - Cape Mendocino, CA (094) 46 mi32 min 54°F11 ft

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Arcata / Eureka, Arcata Airport, CA13 mi69 minS 58.00 miLight Rain58°F57°F97%1020.3 hPa
Fortuna Rohnerville Airport, CA18 mi67 minN 03.00 miOvercast55°F55°F100%1020.7 hPa

Wind History from ACV (wind in knots)
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Last 24hrSE11SE14
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Tide / Current Tables for Eureka, Humboldt Bay, California
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Eureka
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Sat -- 03:51 AM PST     2.75 feet Low Tide
Sat -- 06:07 AM PST     Moonset
Sat -- 07:36 AM PST     Sunrise
Sat -- 10:03 AM PST     8.29 feet High Tide
Sat -- 03:55 PM PST     Moonrise
Sat -- 04:59 PM PST     -1.47 feet Low Tide
Sat -- 05:18 PM PST     Sunset
Sat -- 11:43 PM PST     6.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.34.63.832.83.34.55.877.98.37.96.64.72.60.6-0.9-1.5-0.90.31.93.54.95.9

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
Click for Map
Sat -- 03:34 AM PST     2.97 feet Low Tide
Sat -- 06:07 AM PST     Moonset
Sat -- 07:36 AM PST     Sunrise
Sat -- 09:35 AM PST     7.94 feet High Tide
Sat -- 03:55 PM PST     Moonrise
Sat -- 04:55 PM PST     -1.51 feet Low Tide
Sat -- 05:18 PM PST     Sunset
Sat -- 11:38 PM PST     5.62 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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54.33.63.133.64.65.97.17.87.97.25.841.90.1-1.1-1.5-10.21.83.44.75.5

Weather Map and Satellite Images
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wmap_P
GOES 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Eureka, CA (22,6,7,8)
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Ground Weather Radar Station Eureka, CA
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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.