Thursday, May23, 2019 L-36.com


Marine Weather and Tides
Bayview, 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 5:50AMSunset 8:35PM Thursday May 23, 2019 10:17 AM PDT (17:17 UTC) Moonrise 12:00AMMoonset 9:02AM Illumination 78% Phase: Waning Gibbous; Moon at 19 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 227 pm pst Fri feb 15 2019 a marine weather statement has been issued for the following areas... Waters from pt. St. George to cape mendocino ca out 60 nm... Humboldt bay bar... At 222 pm pst, doppler radar indicated lines of showers and isolated Thunderstorms over the waters north of cape mendocino, capable of producing winds to around 30 knots and small hail. This activity was moving east-northeast at 30 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. && lat...lon 4174 12417 4154 12405 4153 12405 4154 12408 4124 12410 4114 12416 4089 12413 4084 12418 4086 12410 4082 12410 4065 12431 4060 12418 4062 12424 4063 12432 4045 12440 4047 12579 4129 12555 4168 12568 4178 12579
PZZ400 847 Am Pdt Thu May 23 2019
Synopsis for northern california waters..Gale force northerly winds and large steep seas will continue through tonight. Winds will ease briefly on Fri, and then quickly strengthen back to gale Fri night and Sat. Winds will start to trend down on Sun, however seas will remain hazardous. Ocean conditions will improve much more significantly Mon and Tue next week.


7 Day Forecast for Marine Location Near Bayview, CA
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location: 40.78, -124.2     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 231230
afdeka
area forecast discussion
national weather service eureka ca
530 am pdt Thu may 23 2019

Synopsis Mild and dry conditions can be expected throughout the
interior today, with cool and breezy conditions along the coast.

Chances for interior showers will gradually increase Friday
through Monday, with isolated thunderstorms possible at times. A
cooling trend is expected over the weekend, with a return to
warmer but near-normal temperatures toward the middle of the week.

Discussion Northwestern california remains within a regime of
northerly flow as a broad cutoff low pressure system continues to
spin across the great basin. While unsettled and showery conditions
are expected today to our east, more specifically along the
sierras and southern cascades, this pattern is expected to yield
another dry and breezy day across the coast and klamath ranges.

Stubborn marine stratus associated with a deep marine layer will
likely keep some coastal areas of humboldt county socked in with
clouds and cool most of the day, but otherwise most interior
areas should see plenty of Sun and mild temperatures. Breezy north
winds can also be expected along the coast and along coastal
ridges.

While in a broad sense this northerly flow pattern will continue
into the weekend, subtle changes will bring about cooler and more
unsettled weather for the region. The first hint of this
transition will occur Friday afternoon, as an approaching
shortwave from the north combined with marginally increased
instability may yield a few showers and perhaps an isolated
thunderstorm or two across the mountain ranges of eastern trinity
and eastern mendocino counties. However, most other areas will
see very little change from today, with breezy northerly winds and
nearly identical temperatures expected to continue. Saturday will
begin a modest but perceptible cooling trend, with perhaps
another round of isolated mountain showers possible in the
afternoon. During the evening and overnight Saturday, a more
potent and fast-moving cutoff low pressure system will quickly
pass through the area from north to south, likely bringing more
widespread shower activity to the region and in particular to the
interior mountains. While this system will hastily exit the region
to the southeast, lingering moisture and instability may result
in another round of mountain showers Monday afternoon as well.

A modest warming trend is expected to begin Tuesday through at
least mid week as the previously mentioned system drifts farther
away and heights increase. Still, this warming trend will be far
from a heatwave, as long term ensemble mean temperature anomalies
remain within one standard deviation of normal through the end of
the weak. Meanwhile, the upper flow pattern will remain unsettled
enough that additional episodes of interior mountain showers and
even perhaps a few weak cold fronts cant be ruled out through the
end of next week. Brc

Aviation Ceilings around 1000 feet at kacv this morning will
turn over and becomeVFR this afternoon as robust northerly winds
aloft mix down to mean sea level. Confidence ceilings will return
this evening at acv is low. Ceilings at cec have been mostly non-
existent with a report of a brief cloud deck near 600 ft. Winds
have been quite robust at kcec through the night. So far, it has
not decoupled with gusts to 25 to 30 kt. If any decoupling occurs,
expect winds to quickly mix down to mean sea level by mid
morning. Kuki will be fine today with clear skies and winds 10kt
or less.

Marine Gale force northerly winds and large steep seas will
continue today through this evening. Peak wind gusts around 40 kts
are forecast through this evening. Steep seas from 13 to 15 ft
are expected for the southern waters, while seas north of cape
mendo are forecast to be around 10 to 12 ft. Winds and seas will
ease on Friday, however wind from 15 to 25 kt and seas around 9 ft
north of CAPE mendo and around 11 ft south will warrant more
advisories for small craft. Granted near shore winds will be
light, ranging from calm to 10 kt. This break in strong
northerlies will be short-lived. Expect winds to ramp up quickly
Friday night and remain near gale, gusts to 35 kt and 40 kt,
through Sat evening. Steep seas this weekend will also rebuild and
be very similar to today, with wave heights from 13 to 15 ft
south of CAPE mendo and 10 to 12 ft north. Seas will take the
better part of Sunday to quite down and at this point do not
expect any significant improvement in ocean conditions until
Monday and Tuesday of next week.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory until 3 am pdt Friday for pzz450-455.

Gale warning until midnight pdt tonight for pzz470-475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 1 mi41 min 55°F1013.3 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 18 mi17 min NNW 25 G 37 1013.7 hPa (-0.7)
46213 - Cape Mendocino, CA (094) 44 mi47 min 53°F14 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, CA15 mi24 minNNE 1010.00 miFair61°F52°F72%1013.1 hPa
Fortuna Rohnerville Airport, CA16 mi42 minNW 10 G 149.00 miOvercast54°F50°F88%1013.2 hPa

Wind History from ACV (wind in knots)
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Tide / Current Tables for Bucksport, Humboldt Bay, California
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Bucksport
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Thu -- 12:22 AM PDT     Moonrise
Thu -- 03:03 AM PDT     6.72 feet High Tide
Thu -- 05:52 AM PDT     Sunrise
Thu -- 10:01 AM PDT     Moonset
Thu -- 10:13 AM PDT     -0.29 feet Low Tide
Thu -- 05:29 PM PDT     5.50 feet High Tide
Thu -- 08:34 PM PDT     Sunset
Thu -- 10:08 PM PDT     3.72 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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55.86.56.76.55.74.42.91.40.2-0.3-0.10.71.83.14.255.55.45.14.543.73.9

Tide / Current Tables for Hookton Slough, Humboldt Bay, California
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Hookton Slough
Click for Map
Thu -- 12:22 AM PDT     Moonrise
Thu -- 03:03 AM PDT     6.46 feet High Tide
Thu -- 05:53 AM PDT     Sunrise
Thu -- 10:02 AM PDT     Moonset
Thu -- 10:30 AM PDT     -0.28 feet Low Tide
Thu -- 05:30 PM PDT     5.25 feet High Tide
Thu -- 08:34 PM PDT     Sunset
Thu -- 10:25 PM PDT     3.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.75.56.26.56.25.54.431.60.4-0.2-0.20.41.52.73.94.75.25.24.94.43.93.63.7

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 (13,3,4,5)
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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.