Tuesday, October16, 2018 L-36.com


Marine Weather and Tides
Myrtle, 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 7:28AMSunset 6:35PM Tuesday October 16, 2018 12:31 PM PDT (19:31 UTC) Moonrise 1:39PMMoonset 11:28PM Illumination 48% Phase: First Quarter Moon; Moon at 7 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 828 Am Pdt Tue Oct 16 2018
Synopsis for northern california waters..Winds will generally be light and out of the north during the work week. A long period northwesterly swell will continue to build across the waters this week. In addition, a long period southerly swell will also be present across the waters.


7 Day Forecast for Marine Location Near Myrtle, CA
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location: 40.8, -124.14     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 161130
afdeka
area forecast discussion
national weather service eureka ca
430 am pdt Tue oct 16 2018

Synopsis Mild and dry conditions will continue through the end
of the week, with patchy frost possible in low elevations. Chances
for rain will return early next week.

Discussion High pressure and weak offshore flow are keeping
skies across the area mostly clear this morning. Temperatures in
the valleys and along the coast are chilly, many areas are seeing
mid to upper 30s. Areas slightly higher in elevation and areas
seeing some light winds are staying much warmer, for example
kneeland is in the 60s this morning. The offshore flow has been
strong enough to keep the stratus off the coast, however it is not
very far off the coast. Confidence is low on when it will come
onshore. This afternoon as the sea breeze develops this stratus
and cooler marine air is expected to move onshore. Current
forecast is that this will hold off until late afternoon, but it
could be earlier. The temperatures could stay in the 50s if it
comes onshore earlier than expected.

Tonight models are indicating that the offshore flow will
continue to weaken. This should allow the stratus to stay in
place tonight. If this occurs the coast areas will likely not see
frost tonight. Areas farther inland that saw frost this morning
will likely see it again Wednesday morning. Wednesday afternoon
the stratus should push back to the coast, but temperatures may
remain cooler than today.

Thursday into the weekend the weather pattern remains very
persistent with high pressure in place. Inland temperatures are
expected to warm slightly through the period. It appears some
stratus will return to the coast, however confidence is low on the
timing and extent of the stratus. Confidence is higher that the
marine layer will remain shallow and the higher elevations will
remain out of the marine layer. Areas that remain clear in the
valleys will likely continue to see chilly temperatures with frost
possible.

Current model runs keep Monday dry as well with a system bringing
some rain to the area on Tuesday. The GFS and ECMWF are in decent
agreement on this, but it may continue to slow this down due to
the strong ridge. There are indications that we will see a wetter
pattern in the next week to 10 days. Mkk

Aviation Aviation sites across the region have been reporting
vfr conditions this morning. While some patchy ground fog had been
impacting locations right around humboldt bay this morning the
fog has since dissipated and visibilities have greatly improved.

Widespread coastal stratus remains intact just offshore. Stratus
has been moving closer to the coast this morning however it is
still unclear how soon and which coastal terminals it will impact
as some light offshore flow is still being reported along the
north coast. If the stratus does make it onshore this morning,
stratus may very well stick with us throughout the day. Stronger
northwesterly flow will develop along the coast later this
afternoon so it would seem logical that stratus would become much
more prevalent along the entire coast by this afternoon and
evening. Most high resolution model guidance indicates stratus
moving back over coastal terminals no later than 5 pm tonight.

While the exact timing is still in question it appears reasonable
that ifr to lifr ceilings and visibilities will develop for both
cec and acv. Across the interior, sunny skies and light winds will
prevail through this TAF cycle. Wci

Marine Northerly winds will return to the coastal waters
today with speeds around 5-15 kts. Winds will remain northerly
through the end of the weekend and generally remain below 15 kts
during this entire period. A long period northwesterly swell will
begin to build across the waters today peaking at 6-8 feet at around
15 seconds on Thursday and then gradually subsiding as we go through
the weekend. In addition, a southwesterly swell up to 3 feet at 14-
18 seconds will persist through early this weekend. Short period
northerly wind waves around 4 feet will also help to enlarge the
total wave heights observed by mariners this week. Wci

Beach hazards Hazardous beach conditions will be possible
Wednesday morning through early Thursday morning with the arrival of
a long period northwesterly swell. Surf heights from 9 to 12 feet
will be possible for west-northwest facing beaches. In addition, the
threat for sneaker waves will be elevated, especially for steep
beaches. Beach goers should stay further away from the ocean and
never turn their back to the ocean as hazardous waves can wash
farther up the beach at any time. Wci

Fire weather High pressure remains in place across the area
this morning with very poor rh recoveries and warm temperatures at
the higher elevations. These are expected to improved slightly
over the next several days, but generally these conditions will
persist. Fortunately wind speeds appear to be relatively weak
during this time frame and driven by local terrain effects and the
diurnal onshore offshore cycle, although some local areas may see
occasional breezy upslope winds where the terrain favors it.

Mkk brc

Eka watches warnings advisories
Ca... Frost advisory until 9 am pdt this morning for caz103>106-
109>112.

Beach hazards statement from Wednesday morning through Wednesday
evening for caz101-103-104-109.

Northwest california coastal waters... None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 5 mi56 min N 8 G 8.9 48°F 52°F1021.5 hPa
46244 - Humboldt Bay, North Spit, CA 13 mi32 min 52°F3 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 21 mi22 min NNE 9.7 G 14 50°F 52°F1021.5 hPa50°F
46213 - Cape Mendocino, CA (094) 47 mi32 min 54°F5 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 mi39 minWNW 510.00 miFair55°F48°F80%1021.3 hPa
Fortuna Rohnerville Airport, CA17 mi57 minNW 410.00 miFair61°F39°F45%1021 hPa

Wind History from ACV (wind in knots)
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Last 24hrNW4NW6NW6NW5NW4W4CalmE4CalmCalmSE3CalmE4E4E4CalmCalmE5CalmE3CalmW3W5NW5
1 day agoSW5W7SW5W5SW3SW4CalmCalmCalmCalmCalmCalmCalmCalmE3SE3CalmCalmSE4--CalmCalmCalmCalm
2 days agoW4CalmSW4SW55SW4S5S5SE4E5E5E3E3E3E4E3NE3E3CalmCalmS4W3W4W4

Tide / Current Tables for Eureka Slough Bridge, Humboldt Bay, California
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Eureka Slough Bridge
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Tue -- 12:04 AM PDT     0.70 feet Low Tide
Tue -- 07:29 AM PDT     Sunrise
Tue -- 07:41 AM PDT     5.51 feet High Tide
Tue -- 11:02 AM PDT     First Quarter
Tue -- 12:06 PM PDT     3.67 feet Low Tide
Tue -- 02:38 PM PDT     Moonrise
Tue -- 06:09 PM PDT     6.16 feet High Tide
Tue -- 06:34 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.91.52.43.44.355.45.55.14.53.93.73.84.24.95.55.96.265.54.53.32.1

Tide / Current Tables for Humboldt Bay (south jetty), California (expired 1984-12-31)
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Humboldt Bay (south jetty)
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Tue -- 12:12 AM PDT     0.57 feet Low Tide
Tue -- 07:25 AM PDT     4.62 feet High Tide
Tue -- 07:29 AM PDT     Sunrise
Tue -- 11:02 AM PDT     First Quarter
Tue -- 12:15 PM PDT     3.38 feet Low Tide
Tue -- 02:38 PM PDT     Moonrise
Tue -- 05:44 PM PDT     5.28 feet High Tide
Tue -- 06:34 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.71.32.133.84.34.64.64.343.63.43.53.84.34.85.25.354.53.62.71.8

Weather Map and Satellite Images
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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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Wind Forecast for Eureka, CA (15,3,4,5)
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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.