Friday, December15, 2017 L-36.com


Marine Weather and Tides
Scotia, 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 7:33AMSunset 4:51PM Friday December 15, 2017 3:48 PM PST (23:48 UTC) Moonrise 5:00AMMoonset 3:37PM Illumination 6% Phase: Waning Crescent; Moon at 27 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ410 754 Am Pdt Thu Sep 7 2017
.a strong Thunderstorm over the waters... The areas affected include... Coastal waters from pt. St. George to cape mendocino ca out to 50... At 751 am pdt...doppler radar indicated Thunderstorms... Capable of producing local winds to around 30 knots and small hail. These storms are moving to the northwest at 25 knots. These Thunderstorms will continue through at least mid morning. Precautionary/preparedness actions... 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 4174 12417 4160 12410 4114 12416 4104 12412 4077 12423 4076 12423 4081 12418 4081 12417 4069 12422 4071 12426 4065 12431 4063 12428 4062 12426 4061 12433 4045 12441 4052 12578 4178 12499 4178 12426
PZZ400 214 Pm Pst Fri Dec 15 2017
Synopsis for northern california waters..Northerly winds will continue to increase this afternoon with gale force winds expected for tonight. The strongest gusts will occur across the outer waters and over the southern inner waters. Northwest swells will continue to impact the waters in addition to large, steep wind waves for the weekend.

7 Day Forecast for Marine Location Near Scotia, CA
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location: 40.25, -124.37     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 152250
afdeka
area forecast discussion
national weather service eureka ca
250 pm pst Fri dec 15 2017

Synopsis After a few light sprinkles this evening, windy, cool
and dry conditions are expected overnight and Saturday. Dry
conditions are expected Sunday through Tuesday, with the first
accumulating rain in nearly two weeks expected Tuesday night and
Wednesday.

Discussion A mostly dry cold front is currently approaching
northwest california this evening, which will bring with it the
first mildly notable change in weather the region has seen in
quite a while thanks to a stagnant dry pattern. While a few
sprinkles will be possible this evening and overnight as the front
passes, no significant precipitation is expected. Instead, this
feature will usher in brisk northerly to northeasterly winds to
area ridges and immediate coastal areas, winds which will
generallylast from late tonight through Saturday afternoon
before gradually weakening. While these will be the strongest
winds the region has seen in several days, wind speeds are not
expected to rise to advisory levels and will likely only pose
minor inconveniences even in the windiest areas. These winds will
also be accompanied by a cooler and very dry airmass, which will
have fire weather implications across parts of the region. More
details on fire weather concerns are detailed in the fire weather
discussion below. Winds will gradually weaken late Saturday and
Sunday, and will remain generally light Monday and Tuesday.

Temperatures are expected to be noticeably lower Saturday, likely
with struggling to reach the low 50s across even the lower
elevations during the afternoon. A gradual warming trend can then
be expected Sunday through Tuesday, as a ridge of high pressure
will quickly build back into the region. Overnight temperatures
will continue to be cool in valley locations, especially Saturday
night and beyond.

Confidence continues to increase that late Tuesday and Wednesday
will feature the first notable accumulating rainfall the region
has seen in almost two weeks... A rarity for december. Still, even
through chances are increasing, precipitation totals will be
generally light and may only reach a little over an inch in the
wettest areas of del norte county. Some places in southern
mendocino county may not see any rain at all. Not only this, but a
blocking ridge of high pressure will quickly return Thursday and
beyond, resulting in another extended dry period that will carry
through likely at least christmas and possibly beyond. All this
means that this december will almost certainly fall well short of
average precipitation totals.

This wave of rain late Tuesday and Wednesday will be quickly
followed by a surge of cold air, and this may result in some light
snow reaching a few interior highway passes. Any snow that does
reach the passes will likely be very light, and will not last very
long. Brc

Aviation Low CIGS and vis straddled the north
coast... Especially at fot eka acv where conditions remained ifr
through morning. At 12:00 noon, vis satellite indicated a fairly
weak frontal boundary still offshore. The associated clouds were
already moving across the cec air terminal... And will continue to
spread over the north coast through afternoon. These CIGS were
averaging about 6000 feet and there was occasional haze
obstruction. 2 pm radar image also indicated that virga was
associated with the mid clouds. The approaching system is somewhat
fast with little dynamics. Therefore, any rain will be brief,
have low QPF and will be mostly in the far north... In the cec del
norte confines with a few sprinkles possible as far south as acv
and the humboldt bay area. Ta
portions of previous discussion: ceilings should scatter out
behind the front tonight with mostlyVFR conditions expected.

Although some pockets of lower ceilings may develop along the
coast tonight bringing MVFR possible ifr. Otherwise expectedVFR
to prevail. Some llws will be possible this evening as a weak cold
front passes, particularly at uki. Kml brc

Marine There have been some slight changes to the forecast
this afternoon as models continue to show increasing northerly
winds due to a building offshore ridge. As a result gale warnings
now span across the outer waters and southern inner waters (zones
470, 475, and 455). The small craft advisory remains in effect for
the northern inner waters starting this afternoon, but may need
to be upgraded to a gale warning if winds come in stronger than
expected. If gale force winds were to occur in the northern inner
waters they'd likely stay around the CAPE mendocino area.

Northwest swells will continue to impact the waters through the
weekend in addition to steep waves building in response the
gales. Winds and seas will begin to settle on Sunday into early
next week as the pressure gradient relaxes across the coastal
waters. Kml kr

Fire weather A mostly dry cold front will pass through the
region this evening, and will usher in gusty northeast ridgetop
winds along with a cool, dry airmass overnight tonight and
Saturday afternoon. Meanwhile, an extended period of cool but very
dry conditions has caused local dead fuel moisture to drop,
reaching near all-time low levels for this time of year.

Fortunately, live fuels throughout the region have begun the
winter green-up process after a near to slightly above-normal
rainfall month during november. This greenup will likely prevent
fire weather conditions from reaching critical levels across the
vast majority of northwest california.

However, some possible exceptions to this may occur across the
far southeastern corner of mendocino county, along with parts of
lake county, where november precipitation was not quite as
abundant and fuels not quite as green. This will occur only a
limited area of these counties, with more widespread critical
conditions expected farther to the south and east. Brc

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory until 3 am pst Sunday for pzz450.

Small craft advisory until 9 pm pst this evening for pzz470-475.

Gale warning from 9 pm this evening to 3 am pst Sunday for
pzz470.

Small craft advisory until 10 pm pst this evening for pzz455.

Gale warning from 10 pm this evening to 8 am pst Saturday for
pzz455.

Gale warning from 9 pm this evening to 9 am pst Sunday 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 mi57 min 54°F9 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 34 mi59 min N 16 G 18 54°F 54°F8 ft1022.8 hPa (-0.8)50°F
HBYC1 - 9418767 - North Spit, CA 37 mi73 min N 7 G 8 51°F 52°F1023.7 hPa
46244 - Humboldt Bay, North Spit, CA 45 mi49 min 56°F8 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, CA24 mi74 minNW 69.00 miA Few Clouds50°F48°F94%1023 hPa

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Last 24hrW6CalmSE8N3CalmSE4SE3SE4SE7SE4S3SE3N3S4SE4SE5E5SE3S3NW4W4NW7W3NW8
1 day agoNW5NW3CalmSE3S3S5SE7SE8SE6SE9S7SE5SE6SE8SE8SE10SE4SE4CalmCalmCalmNW6CalmNW9
2 days agoCalmW6SE4SE6SE9SE9SE7SE6SE5SE9SE8SE7SE8S7SE9S8SE9SE8SE5SE3N3CalmW4NW9

Tide / Current Tables for Cape Mendocino, California
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Cape Mendocino
Click for Map
Fri -- 02:54 AM PST     2.23 feet Low Tide
Fri -- 05:00 AM PST     Moonrise
Fri -- 07:33 AM PST     Sunrise
Fri -- 08:48 AM PST     6.08 feet High Tide
Fri -- 03:37 PM PST     Moonset
Fri -- 04:00 PM PST     -0.18 feet Low Tide
Fri -- 04:52 PM PST     Sunset
Fri -- 10:29 PM PST     4.51 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.52.82.42.22.53.34.25.25.96.15.74.83.52.10.90.1-0.20.10.81.82.93.94.44.5

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
Click for Map
Fri -- 12:23 AM PST     -0.67 knots Max Ebb
Fri -- 03:38 AM PST     0.00 knots Slack
Fri -- 04:59 AM PST     Moonrise
Fri -- 06:33 AM PST     0.84 knots Max Flood
Fri -- 07:33 AM PST     Sunrise
Fri -- 09:21 AM PST     -0.00 knots Slack
Fri -- 12:34 PM PST     -1.29 knots Max Ebb
Fri -- 03:37 PM PST     Moonset
Fri -- 04:32 PM PST     0.00 knots Slack
Fri -- 04:52 PM PST     Sunset
Fri -- 07:40 PM PST     1.03 knots Max Flood
Fri -- 10:41 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-0.7-0.5-0.30.20.60.80.80.60.2-0.4-1-1.2-1.3-1.1-0.8-0.30.30.7110.80.4-0.2

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 (18,4,5,8)
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Ground Weather Radar Station Eureka, 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.