Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Scotia, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:14AMSunset 8:13PM Saturday April 29, 2017 10:39 AM PDT (17:39 UTC) Moonrise 8:15AMMoonset 11:05PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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 1227 pm pdt Wed apr 19 2017 a marine weather statement has been issued for the following areas... Coastal waters from cape mendocino to pt. Arena ca out 10 nm... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... Waters from cape mendocino to pt. Arena ca from 10 to 60 nm... Waters from pt. St. George to cape mendocino ca from 10 to 60 nm... Scattered Thunderstorms will continue to develop through 3 pm. The main storm hazards will be dangerous cloud to water lightnig...wind gusts to 40 knots or more...small hail...and waterspouts. 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.ground 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 4156 12410 4150 12398 4153 12407 4154 12408 4089 12413 4076 12423 4087 12414 4085 12409 4083 12408 4065 12431 4060 12416 4051 12413 4063 12432 4043 12441 4044 12581 4129 12555 4168 12568 4178 12579
PZZ400 905 Am Pdt Sat Apr 29 2017
Synopsis for northern california waters..A weak front will approach from the nw resulting in a decrease in northerly winds and subsiding short period seas today through tonight north of cape mendocino. Northerly winds south of the cape will remain strong enough to warrant an advisory through Sun.

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 291010
afdeka
area forecast discussion
national weather service eureka ca
310 am pdt Sat apr 29 2017

Synopsis A weakening frontal boundary will impact far
northwestern california during Sunday morning, resulting in minor
rain chances for locations north of eureka. Dry weather and
moderating temperatures will then prevail over much of the region
during the new work week.

Discussion A highly amplified upper flow pattern was present
over the wrn CONUS Saturday morning, with a ridge present offshore
over the pacific, and a deep trough located across the rockies. A
minor upper impulse is forecast to move through the top of the
ridge Saturday night into Sunday morning, which will drive a
weakening surface front southward toward far nwrn ca. Light
showers will be possible as a result. Thereafter, model guidance
shows the upper ridge gradually shifting ewd through the middle of
the upcoming week... Eventually becoming positioned over the great
basin by 00z Friday. Several processes are forecast to occur as
the ridge shifts east. First, low-level temperatures will
progressively moderate, such that values at 850 mb reach 18 c on
Wednesday. This will support moderating high temperatures Tuesday,
Wednesday, and Thursday... Which was depicted well in the
inherited forecast. Second, the airmass will be more prone to
destabilization as a subsident regime exits east, and nwrn ca
becomes exposed to embedded wswly upper disturbances. This could
yield deep moist convection over the mountainous terrain of
trinity county. Thus, a slight chance of thunderstorms was
introduced for Thursday and Friday afternoon/evening.

Aviation Other than a patch of MVFR clouds over eureka and in
the eel delta,VFR conditions will prevail at all terminals today.

This patch of cloud may reach kacv by daybreak, producing brief
MVFR ceilings. This patch of low cloud will dissipate with daytime
heating and mixing by mid morning. Surface and boundary layer
humidities will ramp up substantially tonight. Bufkit profiles,
nam/arw as well as the GFS boundary layer fields indicate a weak
front passing to our north tonight. This front will produce a
shallow push of moist air by early Sunday. MVFR or ifr conditions
are expected at both kacv and kcec late tonight into Sunday
morning. Confidence is not high on the specifics, however
conditions will likely deteriorate at the coastal terminals
tonight.

Marine Light to moderate northerlies will prevail through the
forecast period. Northerly winds will ease up today as a weak
front approaches from the nw. Seas will gradually subside as well.

Winds and seas in the southern waters will remain at or near
small craft advisory level through the weekend, however.

North winds will likely increase some late Sunday afternoon into
Sunday night and Monday as the offshore ridge strengthens.

Advisories for waters other than pzz475 appear marginal at the
moment. Thus will let the going headlines run their course.

The northerly flow pattern is forecast to persist through next
week as high pressure remains firmly entrenched offshore. Periodic
fronts will disrupt the strength of the northerlies north of cape
mendocino. South of the cape, winds will remain strong enough to
generate steep and hazardous seas through the week.

Eka watches/warnings/advisories
Ca... None.

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

Small craft advisory until 9 am pdt this morning for pzz470.

Small craft advisory until 5 am pdt Wednesday 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 mi47 min 53°F7 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 34 mi49 min N 7.8 G 9.7 52°F 53°F6 ft1024.9 hPa (+1.7)49°F
HBYC1 - 9418767 - North Spit, CA 37 mi63 min NNE 5.1 G 6 48°F 55°F1025.3 hPa
46244 - Humboldt Bay, North Spit, CA 44 mi48 min 54°F6 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 mi44 minW 410.00 miFair54°F48°F82%1024.7 hPa

Wind History from FOT (wind in knots)
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1 day agoNW12NW9NW11NW10NW14
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NW7NW7NW7NW6NW9NW6NW5NW5N5NW5NW6W5NW6N13NW15
2 days agoCalmNW7NW11NW9NW9NW9N9N12NW7NW5NW6NW6N7NW4NW6NW5N3W5NW4NW5NW4N7NW6NW8

Tide / Current Tables for Cape Mendocino, California
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Cape Mendocino
Click for Map
Sat -- 01:23 AM PDT     6.20 feet High Tide
Sat -- 06:18 AM PDT     Sunrise
Sat -- 08:29 AM PDT     -1.27 feet Low Tide
Sat -- 09:15 AM PDT     Moonrise
Sat -- 03:14 PM PDT     4.75 feet High Tide
Sat -- 08:11 PM PDT     Sunset
Sat -- 08:32 PM PDT     2.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.56.16.15.44.12.40.7-0.5-1.2-1.2-0.50.723.24.34.74.64.13.32.72.22.22.83.6

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
Click for Map
Sat -- 01:58 AM PDT     -0.00 knots Slack
Sat -- 05:20 AM PDT     -1.62 knots Max Ebb
Sat -- 06:19 AM PDT     Sunrise
Sat -- 09:09 AM PDT     0.00 knots Slack
Sat -- 09:16 AM PDT     Moonrise
Sat -- 12:12 PM PDT     1.25 knots Max Flood
Sat -- 03:42 PM PDT     -0.00 knots Slack
Sat -- 05:58 PM PDT     -0.82 knots Max Ebb
Sat -- 08:11 PM PDT     Sunset
Sat -- 09:10 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.5-0-0.6-1.3-1.6-1.5-1.2-0.7-0.10.511.21.20.90.4-0.2-0.7-0.8-0.7-0.4-0.10.30.7

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 (13,3,4,5)
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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.