Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Ukiah, 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 6:56AMSunset 7:36PM Thursday March 30, 2017 1:25 PM PDT (20:25 UTC) Moonrise 7:58AMMoonset 9:52PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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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PZZ540 Point Arena To Point Reyes To 10 Nm- 829 Am Pdt Thu Mar 30 2017
.small craft advisory in effect until 5 pm pdt this afternoon...
.gale warning in effect from 5 pm pdt this afternoon through late tonight...
.small craft advisory in effect from Friday morning through Friday afternoon...
Today..NW winds 20 to 30 kt. Wind waves 3 to 5 ft. W swell 10 to 13 ft at 14 seconds.
Tonight..NW winds 20 to 30 kt with occasional gusts to 45 kt. Wind waves 4 to 6 ft. NW swell 7 to 9 ft at 13 seconds.
Fri..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 8 to 10 ft at 12 seconds.
Fri night..NW winds 20 to 30 kt. Wind waves 3 to 5 ft. NW swell 11 to 14 ft at 14 seconds.
Sat..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 9 to 11 ft at 16 seconds.
Sun..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 10 to 13 ft...increasing to 14 to 17 ft.
Mon..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 11 to 14 ft...decreasing to 6 to 8 ft.
PZZ500 829 Am Pdt Thu Mar 30 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will remain strong and gusty in wake of a frontal passage earlier this morning. Surface high pressure will build over far northern california resulting in gale force winds over the coastal waters through at least Friday. Northwest swell will level off while swell periods steadily decrease today. Large and very long period northwesterly swell will return to the coastal waters late Saturday night that will last through the weekend.

7 Day Forecast for Marine Location Near Ukiah, CA
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location: 39.15, -123.21     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 301243 cca
afdeka
area forecast discussion... Corrected
national weather service eureka ca
543 am pdt Thu mar 30 2017

Synopsis High pressure will build toward the coast today
resulting in dry weather conditions that will last through
Saturday.

Discussion Robust northwesterly flow has developed in the
wake of vigorous mid level shortwave trough progressing eastward
over the sierra-cascade range as of 5am. Moist northwesterly
onshore flow in the lowest 5kft of the atmosphere may continue to
produce spotty light showers til mid morning primarily out toward
the coast and over the coastal mountains. Otherwise it shaping up
to be dry (no rain) today. The brisk northwesterly winds should
lay down by daybreak, then ramp up again this afternoon as the
land mass heats up and surface high pressure builds toward the
coast. The arw has high boundary layer humidities advecting
onto the north coast through the day and high based low cloud
cover will probably reform as the winds increase and a high but
weak inversion develops. Winds will become northeasterly to
easterly late tonight, scouring or pushing away the low clouds.

Friday should be sunny and pleasant, except for the afternoon
sea breezes which may get locally strong for a few hours right at
the ocean-land interface.

We hoisted another frost advisory for interior mendocino county
where late night/early morning temperatures are expected to dip
into the mid 30s. Winds will also be a factor that will keep
temperatures from rapidly falling into the mid 30s this evening.

Only a few hours of early morning readings in the mid 30s are
expected in the coldest valleys. The air mass will warm up
Friday night and another frost advisory probably will not be
necessary, though a few sites may still be close to 35f early
Saturday morning. Afternoon temperatures will warm up nicely on
Saturday in the interior. Readings should top out in the mid 70s
to lower 80s. The nice weather should continue on Sunday. There
is one fly-in-the-ointment though. The ECMWF and GFS continue to
depict a mid level shortwave trough moving into the pacific
northwest and then clipping northeast trinity county with some
shower potential. The models have been inconsistent and all over
the place. Confidence is low there will be any showers. The
latest ECMWF still shows a slight possibility for Sunday. Other
than that one minor ripple on Sunday, dry and fine weather
conditions will hold into the early portion of next week as upper
level ridging remains firmly entrenched over the region. The rain
we had coming in for mid week is not looking very promising and
the chances have been cut-back. It may be another fine and warm
day for the interior on Wed as well. It does look like coastal
stratus will be making a come back early to mid next week. The
northerly flow should eventually die down and become southerly.

A front is expected to bring some rain late in the forecast
period, as late as Thu night. Confidence in the models that far
out, especially during spring, is not high. See no reason to
get bullish and overly confident with rain chances this early in
the game.

Beach hazard and surf... There is a slight concern for sneaker
waves on Saturday as a long period westerly swell around 20
seconds hits 4 to 6 feet by Saturday evening. The greatest threat
appears to be Saturday evening. The one mitigating factor will be
shorter period wave energy from both wind waves and a mid period
west swell around 13 seconds. The swell will continue to build on
Sunday resulting in breakers possibly reaching 19 feet. For now
we have highlighted the threat in our hazardous weather outlook.

A beach hazard advisory may be necessary.

Aviation Vfr to MVFR conditions and moderate to moderate
and gusty winds will continue at kcec and kacv through this
morning. The lower conditions will be due to reduced ceilings
and/or visibilities.VFR conditions and moderate and gusty winds
will prevail at kcec and kacv this afternoon with light winds and
vfr conditions occurring overnight tonight.VFR to MVFR conditions
will continue at kuki early this morning with light winds to calm
conditions occurring.VFR conditions and moderate and gusty winds
will occur at kuki this afternoon and evening.

Marine A weak cold front moved across the waters early this
morning. Moderate and gusty northerly winds increased behind the
frontal boundary this morning. A high pressure ridge will build
across the region today in the wake of the front. Small craft
advisories will continue in effect across the outer waters through
Friday afternoon. Small craft advisories will continue across the
near shore waters through early this morning. Another weak cold
front will move across the waters late Saturday and early Sunday.

Small craft advisories are likely across the waters this weekend
through Monday due to elevated winds and/or seas.

Eka watches/warnings/advisories
Ca... Frost advisory from 3 am to 8 am pdt Friday for caz110>113.

Northwest california coastal waters...

small craft advisory until 9 am pdt this morning for pzz450-455.

Small craft advisory until 3 pm pdt Friday for pzz470-475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 31 mi38 min W 9.9 G 16 54°F 52°F1023 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 41 mi26 min NNW 21 G 27 53°F 1023.3 hPa (-0.4)46°F

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah, Ukiah Municipal Airport, CA1 mi30 minNNW 13 G 1910.00 miFair61°F35°F38%1020.4 hPa

Wind History from UKI (wind in knots)
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Last 24hrNW7CalmNW11
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N8N9NE6N4N6N9NW4CalmCalmNW11
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1 day agoNW12
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NE5N6N5CalmCalmCalmCalmCalmCalmNW3CalmE3CalmN4NW3N34N10N8
2 days agoNW9
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W12W14W9
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N5N5N3CalmCalmCalmNW3CalmSW3CalmCalmCalmCalmNW4N3CalmCalmCalmW13
G18

Tide / Current Tables for Albion, California
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Albion
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Thu -- 01:10 AM PDT     5.99 feet High Tide
Thu -- 07:02 AM PDT     Sunrise
Thu -- 07:31 AM PDT     -0.26 feet Low Tide
Thu -- 09:00 AM PDT     Moonrise
Thu -- 02:05 PM PDT     5.03 feet High Tide
Thu -- 07:37 PM PDT     1.28 feet Low Tide
Thu -- 07:37 PM PDT     Sunset
Thu -- 10:54 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.565.74.83.41.90.6-0.2-0.20.51.52.73.84.754.84321.41.31.92.83.9

Tide / Current Tables for Point Arena, California
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Point Arena
Click for Map
Thu -- 01:04 AM PDT     6.05 feet High Tide
Thu -- 07:02 AM PDT     Sunrise
Thu -- 07:36 AM PDT     -0.21 feet Low Tide
Thu -- 09:00 AM PDT     Moonrise
Thu -- 01:55 PM PDT     4.98 feet High Tide
Thu -- 07:32 PM PDT     1.19 feet Low Tide
Thu -- 07:37 PM PDT     Sunset
Thu -- 10:53 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.76.15.74.83.41.90.7-0.1-0.20.41.52.73.94.754.63.82.81.81.31.31.82.84

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 (16,3,4,5)
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Ground Weather Radar Station Beal AFB, 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.