Tuesday, September26, 2017 L-36.com


Marine Weather and Tides
Ukiah, 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 7:04AMSunset 7:03PM Tuesday September 26, 2017 11:02 AM PDT (18:02 UTC) Moonrise 12:11PMMoonset 10:21PM Illumination 35% Phase: Waxing Crescent; Moon at 6 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- 826 Am Pdt Tue Sep 26 2017
Today..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 to 5 ft at 9 seconds.
Tonight..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 2 to 4 ft at 9 seconds.
Wed..NE winds 10 kt...becoming nw in the afternoon. Wind waves 3 to 4 ft. NW swell 3 to 4 ft at 10 seconds.
Wed night..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Thu..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Fri..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 to 4 ft.
Sat..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. NW swell 3 to 5 ft.
PZZ500 826 Am Pdt Tue Sep 26 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate northwesterly winds will continue into this afternoon over the northern outer waters. A thermal trough over california will shift towards the coast this afternoon decreasing winds across coastal the waters. Expect winds to pick up again heading into the weekend as an upper level trough approaches the pacific northwest Friday.

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 261121
afdeka
area forecast discussion
national weather service eureka ca
421 am pdt Tue sep 26 2017

Synopsis Above normal temperatures and dry conditions will
persist through Thursday with strong offshore winds through
Wednesday morning. Potential for rain showers near oregon border on
Friday. Another rain chance early next week.

Discussion We will have a few more days of dry and warm
conditions. The upper level ridge will still be the dominant weather
feature along the west coast through Wednesday night. Wednesday will
be the warmest day, with highs around 90 degrees for interior
locations. There will be slight cooling starting on Thursday as
cooler maritime air starts to filter into the region as we start to
feel the influence of the next upper level trough.

On Friday, models are hinting on a weak front passing through the
area. There will be potential for precipitation, primarily over del
norte county. Rainfall amount will be fairly light, at around one
tenth of an inch. Further south in mendocino county, this front is
unlikely to bring in precipitation. Highs on Friday will be near
normal, around 80 degrees inland, 60s along the coast.

For the weekend, looks to be mostly dry. High pressure will build
into the area behind the front. After the weekend, looks like we are
heading into a slightly wetter pattern. A zonal flow will set up
over NW california, with occasional weather frontal passages and
resultant precipitation.

Forecast confidence is below average starting on Friday, as models
start to struggle about the transition into a wetter pattern.

Aviation High pressure continues bring mainly clear skies and
dry conditions to the area this morning. There is only a very
small area of of stratus in the eel river valley. Offshore flow
is expected to keep it this way across most of the area this
morning. The stratus in the eel river valley may continue to
expand a bit more this morning, but it is not expected to make it
to kacv. This afternoon breezy winds are expected along the
coast, but they are expected to be lighter than yesterday. Tonight
some localized stratus is possible again, but models are
indicating offshore flow will continue so it is not expected to be
very widespread. Mkk

Marine High pressure over the area will bring one more day of
moderate northerly winds. It looks like the strongest winds and
seas will remain offshore so am not planning to issue small craft
advisories for the inner waters today. Tonight into Wednesday
morning models are in decent agreement on winds becoming fairly
light across the waters. These light winds will continue on
Thursday and into Friday morning. There is still some disagreement
on the direction, but there will likely be some southerly winds
for a period of time.

Models are still in decent agreement on high pressure building
back into the area Friday night into Saturday and bringing a
return to moderate northerly winds. After this models start to
diverge. The GFS shows an inside slider type system moving down
from the north. This brings near gale to gale force northerly
winds to the waters. The ECMWF has a much different solution to
this system bringing it onshore as an upper level trough. This
brings light to moderate southerly winds and rain to the area.

This is the first run with these southerly winds. Confidence is
low on a particular solution so have kept it mainly in line with
the gfs, but with slightly weaker winds. Mkk

Fire weather Red flag warning remains in effect for mendocino
and lake counties through early Wednesday morning due to low
relative humidity and gusty winds. Models continue to show that
there will be periods of gusty NE winds, 20 mph sustained with gusts
to 30 mph, over mendocino and lake counties. Strongest winds will be
over ridge top levels, as suggested by the strong 925 mb to 850 mb
level winds. As of early Tuesday morning, rh recoveries were to
around 30 to 40 percent. Do expect the diurnal heating will drop the
rh to 15 to 25 percent this afternoon. Do expect the combination of
low rh and gusty winds will produce critical fire weather conditions
for at least 8 hours for those areas. Thus, keep the red flag
warning as is. The gusty winds should subside starting on Wednesday.

Dry conditions will still persist through Thursday. There will be
increasing moisture starting on Friday, as the area starts to feel
the effect of more onshore flow. Dry conditions will return for the
weekend.

Eka watches warnings advisories
Ca... Red flag warning until 8 am pdt Wednesday for caz276-277.

Northwest california coastal waters... Small craft advisory until 9 am pdt Wednesday 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 mi45 min SW 2.9 G 4.1 62°F 52°F1012.5 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 41 mi33 min NNW 9.7 G 12 1012.7 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA1 mi67 minESE 310.00 miFair66°F46°F49%1012.6 hPa

Wind History from UKI (wind in knots)
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Last 24hr3CalmCalm3E3NW9
G15
NW113CalmCalmCalmCalmCalmCalmCalmCalmNW4SE3SE3NW3CalmCalmCalmE3
1 day agoCalmCalm4CalmSW3NW8W10
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3N8CalmCalmCalmE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3
2 days agoNW35W5NW63W7NW12
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3N5SW3CalmCalmCalmCalmCalmCalmCalmNW3CalmCalmCalmCalmCalmE3

Tide / Current Tables for Albion, California
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Albion
Click for Map
Tue -- 04:47 AM PDT     4.11 feet High Tide
Tue -- 07:06 AM PDT     Sunrise
Tue -- 09:58 AM PDT     2.90 feet Low Tide
Tue -- 01:13 PM PDT     Moonrise
Tue -- 03:47 PM PDT     5.01 feet High Tide
Tue -- 07:05 PM PDT     Sunset
Tue -- 10:51 PM PDT     0.97 feet Low Tide
Tue -- 11:23 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.72.43.13.744.13.93.63.332.933.43.94.54.954.74.13.32.41.61.11

Tide / Current Tables for Point Arena, California
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Point Arena
Click for Map
Tue -- 04:40 AM PDT     4.01 feet High Tide
Tue -- 07:06 AM PDT     Sunrise
Tue -- 09:38 AM PDT     2.67 feet Low Tide
Tue -- 01:12 PM PDT     Moonrise
Tue -- 03:41 PM PDT     4.86 feet High Tide
Tue -- 07:04 PM PDT     Sunset
Tue -- 10:58 PM PDT     0.94 feet Low Tide
Tue -- 11:24 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.62.333.63.943.83.432.72.72.93.43.94.44.84.84.643.22.41.61.10.9

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 (14,3,4,5)
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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.