Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
Ferndale, 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 7:02AMSunset 5:58PM Wednesday February 20, 2019 1:11 PM PST (21:11 UTC) Moonrise 7:35PMMoonset 8:02AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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 913 Am Pst Wed Feb 20 2019
Synopsis for northern california waters..Moderate to strong northerly breezes and steep seas will persist through Friday. Seas will peak tonight into Thursday as winds intensify and a moderate northwesterly swell accompanies the short-period waves.


7 Day Forecast for Marine Location Near Ferndale, CA
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location: 40.43, -124.42     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 201317
afdeka
area forecast discussion
national weather service eureka ca
517 am pst Wed feb 20 2019

Synopsis A cold front associated with a weak area of low
pressure will pass through northern california today. Showers will
impact most of our area, especially north of mendocino county.

Light snow accumulations will make for slick travel across some of
the mountain passes. Cool and dry conditions with frosty mornings
are expected Thursday and Friday, before another round of rain and
mountain snow arrives this weekend.

Discussion Rain and mountain snow showers will impact much of
northwest california today, before tapering off this evening. Weak
low pressure passing across the interior will push a cold front
southward, which will result in snow levels falling later today
and tonight. The current winter weather advisory above 2500 feet
in del norte, humboldt, and northern trinity county still looks on
track, though some areas around 2500 feet are still seeing rain. It
is tough to get a handle on the exact snow levels early this
morning, but it appears to be generally around 2500 to 3000 feet
based on the available web cams and other observational data. Snow
levels will lower closer to 2000 feet this evening, but by then
most of the showers will be quickly tapering off and shifting
offshore, as stability increases and drier air filters in. Berry
summit will be the most critical highway pass to see impacts, with
2 to 4 inches of snow possible by this evening. Scott mountain
summit and rural roadways above 2500 feet such as bald hills road
may see several inches or more. Lower areas closer to 2000 feet,
and areas farther south in mendocino county, and to the east in
trinity county, will see only very minor accumulations. As far as
rainfall amounts go, expect around a half inch possible from
eureka to crescent city, which is a bit more than models were
projecting yesterday. Much lighter amounts of a tenth of an inch
or less will be occur over mendocino county and eastern trinity.

Skies will begin to clear late tonight as high pressure builds in,
with the last of the shower activity near CAPE mendocino or near
siskiyou county tapering off by Thursday morning. Expect mostly
sunny skies with another cool day, as highs will run several
degrees below seasonal averages. Friday will start off frosty,
similar to Monday or Tuesday morning, but probably not quite as
cold. Clouds will begin to increase in the afternoon as the next
weak cold front approaches. Models are still not in total
agreement with the weather this weekend into early next week, but
are trending toward a more substantial series of storm systems
impacting our region from Sunday through Tuesday. Potential
mountain snow and periods of heavier rainfall appear to be the
main impacts, as there will likely be a better connection to
deeper pacific moisture compared to the past few weather systems.

Snow levels may end up higher than most highway passes with a bit
more warm air involved, but details like that are subject to
change as we refine the forecast over the next few days. Aad

Aviation Intermittent light rain will continue for most of the
day along the redwood coast, producing predominantly MVFR ceilings
at cec and acv. Conditions may occasionally improve toVFR or
briefly deteriorate to ifr at times over the course of the day.

Gusty northwest winds will also persist at the coastal terminals.

Meanwhile, uki will also see the potential for light rain at times
during the morning but is generally expected to remainVFR. Rain is
expected to clear the area by approximately 06z, yielding widespread
vfr conditions into the overnight hours. Cb

Marine Persistent moderate to strong northerly breezes and steep
short period seas will combine with a building mid period swell to
produce potentially hazardous conditions over the coastal waters
through late in the week. Opted to begin the small craft advisory
for the southern nearshore waters early as short period seas around
8 feet and gusts to 25 mph have already been observed and are
expected to continue through the day. Advisory conditions are also
expected to spread back into the northern nearshore waters this
evening if not sooner. The worst conditions are expected tonight
into Thursday as winds continue to increase and the NW swell builds
to around 12 feet at 14 seconds, producing combined seas on the
order of 15 to 17 feet. Have upgraded the gale watch to a warning
for the southern outer waters as gusts to around 40 kt develop by
late this evening. Winds will begin to trend downward late Thursday
as the swell also begins to decay, yielding improving conditions
through the day on Friday and into the weekend as seas gradually
subside. Cb

Eka watches warnings advisories
Ca... Winter weather advisory until 8 pm pst this evening for caz102-
105>107.

Northwest california coastal waters... Small craft advisory from
6 pm this evening to 9 pm pst Thursday
for pzz450.

Small craft advisory until 9 pm pst Thursday for pzz455-470.

Small craft advisory until 9 pm pst this evening for pzz475.

Gale warning from 9 pm this evening to 9 pm pst Thursday for
pzz475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46213 - Cape Mendocino, CA (094) 19 mi42 min 53°F10 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 20 mi52 min NE 12 G 16 52°F1017 hPa
HBYC1 - 9418767 - North Spit, CA 26 mi96 min N 12 G 16 43°F 52°F1017 hPa
46244 - Humboldt Bay, North Spit, CA 32 mi42 min 52°F10 ft

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fortuna Rohnerville Airport, CA17 mi77 minWNW 82.50 miPartly Cloudy41°F41°F100%1016.6 hPa

Wind History from FOT (wind in knots)
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N13N14N7CalmNW3CalmSW3CalmSW3S3SE3E5CalmN3N10NW9
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W10NW11NW7NW4CalmCalmSW3SE5SE6SE7SE5SE5SE7SE7SE5SE7SE6SE6SE3W6N12
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2 days agoNW10NW8NW11W11NW9NW10N5CalmNW3S4S5SE6SE7SE6SE6SE6SE5SE6S5SE5SE4CalmNW10NW10
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Tide / Current Tables for Cape Mendocino, California
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Cape Mendocino
Click for Map
Wed -- 05:30 AM PST     1.60 feet Low Tide
Wed -- 07:04 AM PST     Sunrise
Wed -- 08:02 AM PST     Moonset
Wed -- 11:15 AM PST     6.65 feet High Tide
Wed -- 05:58 PM PST     Sunset
Wed -- 06:07 PM PST     -0.85 feet Low Tide
Wed -- 07:35 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.65.24.33.22.21.71.72.43.64.966.66.55.64.12.40.7-0.4-0.8-0.50.51.93.44.8

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
Click for Map
Wed -- 12:20 AM PST     -0.00 knots Slack
Wed -- 02:50 AM PST     -1.09 knots Max Ebb
Wed -- 06:06 AM PST     0.00 knots Slack
Wed -- 07:04 AM PST     Sunrise
Wed -- 08:01 AM PST     Moonset
Wed -- 09:01 AM PST     1.16 knots Max Flood
Wed -- 11:58 AM PST     -0.00 knots Slack
Wed -- 03:06 PM PST     -1.65 knots Max Ebb
Wed -- 05:58 PM PST     Sunset
Wed -- 06:50 PM PST     0.00 knots Slack
Wed -- 07:34 PM PST     Moonrise
Wed -- 09:48 PM PST     1.33 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0.5-1-1.1-0.9-0.5-0.10.511.210.6-0-0.8-1.4-1.6-1.5-1.1-0.60.10.81.21.31.1

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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Wind Forecast for Eureka, CA (16,3,4,5)
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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.