Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Cliffdell, WA

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 6:06AMSunset 8:04PM Sunday August 20, 2017 4:38 AM PDT (11:38 UTC) Moonrise 3:48AMMoonset 6:37PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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PZZ135 Puget Sound And Hood Canal- 249 Am Pdt Sun Aug 20 2017
Today..N wind to 10 kt. Wind waves 1 ft or less.
Tonight..NE wind to 10 kt. Wind waves 1 ft or less.
Mon..N wind to 10 kt. Wind waves 1 ft or less.
Mon night..N wind to 10 kt. Wind waves 1 ft or less.
Tue..Light wind becoming nw to 10 kt in the afternoon. Wind waves 1 ft or less.
Tue night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Wed..Light wind becoming N to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Thu..SE wind to 10 kt becoming nw. Wind waves 1 ft or less.
PZZ100 249 Am Pdt Sun Aug 20 2017
Synopsis for the northern and central washington coastal and inland waters..A typical august pattern will prevail through the middle of next week. Expect onshore flow of varying strength to persist due to high pres offshore and lower pres east of the cascades. A weak system will approach the coastal waters on Wednesday and move inland Thursday.

7 Day Forecast for Marine Location Near Cliffdell, WA
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location: 46.92, -121.24     debug


Area Discussion for - Pendleton, OR
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Fxus66 kpdt 200958
afdpdt
area forecast discussion
national weather service pendleton or
258 am pdt Sun aug 20 2017

Short term Today through Tuesday... A ridge of high pressure
building along the coast will keep a dry and stable northwest flow
aloft over the CWA today and Monday. This will provide mostly clear
skies and light winds. There will be some high clouds as a weak
disturbance moves across the CWA late this afternoon and overnight
tonight. The main effects will just be some mid and high clouds.

This disturbance will move east of the forecast area early Monday
morning with mostly clear skies behind it just in time for the total
eclipse Monday morning. Temperatures today will be very similar to
Sunday... With lower elevation maximum temperatures in the 80s... And
70s in the mountains. Then a warming trend will begin on Monday with
afternoon MAX temperatures climbing back into the upper 80s to lower
90s. On Tuesday the upper ridge axis will move to the east and a
southwest flow will develop over the cwa. This will result in a
continued warming trend, but also some moisture and instability
moving into southern and central oregon. Thus there could be a stray
thunderstorm over central oregon Tuesday afternoon and will include
a slight chance for Tuesday afternoon's forecast in central oregon.

There will be some smoke over the southwest corner of the CWA each
day due to nearby wildfires. Winds will be light through on
Tuesday as well. 88

Long term Tuesday night through Sunday... The extended period
starts off with a weak upper level low situated off the central ca
coast... Along with another, much deeper, closed low in the gulf of
alaska. A weak disturbance will rotate up from the south Tuesday
evening around the central ca low. This will combine with gradually
increasing moisture and atmospheric instability to provide a slight
chance of t'storms over central oregon Tuesday evening. The slight
chance of t'storms will then spread slowly north, and linger into
Tuesday night. The previously mentioned deep upper low trough will
then approach the CWA through the day Wednesday. Heights will begin
to fall and moisture will continue to increase in a south southwest
flow regime. As an area of enhance lift vorticity moves north, there
could even be a few showers t'storms Wednesday morning from the blue
mtns, south and east. Instability increases further Wednesday
aftn eve out ahead of the approaching frontal boundary. The latest
gfs indicates some negative lis along with sfc based CAPE values up
to 500 j kg. Dynamic forcing and lift will further increase as the
strong trough and associated jet move onshore. Therefore, continued
to indicate an expansive area with a chance of showers and slight
chance t'storms Wednesday pm, along and east of a line from about
sisters or to lexington or and dayton wa. Further north and west,
locations in the columbia gorge, yakima and kittitas valley are
forecast to remain dry. A band of showers, with perhaps a few
embedded t'storms could make it as far west as condon--boardman and
prosser late Wednesday evening as the actual front moves through.

There will be a continued chance of showers and a slight chance of
t'storms Wednesday night along the hwy 395 corridor (seneca--
pendleton--connell) and points east. By midday Thursday the frontal
boundary will be exiting our forecast area to the east. There could
be a lingering shower t'storm over wallowa county, otherwise
conditions will dry out, with clearing skies in the lower columbia
basin and surrounding areas. Strong cold air advection, tightening
pressure gradients and increasing winds aloft will develop Thursday
afternoon. Forecast soundings indicate dry mid level air advecting
into the region, and conditions appear prime for wind energy aloft
to effectively mix down toward the surface. At this time, westerly
winds of 15-25 mph, with higher gusts are forecast west of the blue
mtns Thursday afternoon. This will cause a few issues... One being
fire weather concerns, as rh values hover between 17-27 percent in
most areas. The other concern will be for patchy blowing dust to
develop in association with the gusty winds... Mainly over the lower
columbia basin and into the blue mtn foothills. Temperatures will be
much cooler Thursday afternoon (about 10 degrees compared to
Wednesday)... With highs only reaching the upper 70s to mid-
80s... Except lower to mid-70s mountains. Friday will feature a dry
northwest flow over the area with continued cooler temperatures.

Friday and Saturday morning will be particularly cool, under mostly
clear skies. Low temperatures are forecast to fall into the 40s and
lower 50s... Except 30s mountains. By next weekend, the latest model
guidance is in fairly good agreement that an upper level ridge will
build over the pacific northwest. This will keep conditions dry,
under mostly clear skies with warming temperatures. Highs will be
back to near average levels Saturday, and 5-10 degrees above average
by next Sunday. 77

Aviation 12z tafs...VFR conditions are forecast to prevail at all
taf sites over the next 24 hours. Sct to bkn high level clouds are
expected to move over the forecast area later today and continue
through the early evening hours. This high cloud deck will be mainly
between 20k - 35k ft agl. These clouds will move off to the
southeast and out of the area after 21 06z... Giving way to clear
skies. Winds will be light through the period... AOB 12 kts for all
terminals... Except perhaps up to 15 kts at times this afternoon at
kdls. 77

Preliminary point temps pops
Pdt 84 53 89 56 0 0 0 0
alw 85 58 92 61 0 0 0 0
psc 88 56 93 58 0 0 0 0
ykm 87 56 93 59 0 0 0 0
hri 87 55 92 57 0 0 0 0
eln 84 54 91 57 0 0 0 0
rdm 84 46 90 49 0 0 0 0
lgd 82 47 88 50 0 0 0 0
gcd 84 51 89 55 0 0 0 0
dls 86 62 92 64 0 0 0 0

Pdt watches warnings advisories
Or... None.

Wa... None.

88 77 77


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 67 mi50 min 60°F 54°F1021.3 hPa
TCMW1 - 9446482 - Tacoma Met, WA 67 mi50 min N 1.9 G 4.1
EBSW1 - 9447130 - Seattle, WA 75 mi50 min N 1 G 2.9 59°F 56°F1021.5 hPa

Wind History for Tacoma MET, WA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA26 mi1.7 hrsVar 510.00 miFair48°F42°F80%1021 hPa

Wind History from SMP (wind in knots)
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Last 24hr5W6335456SW64546
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1 day agoSW5SW64SW4SW66555W76W75
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2 days ago4353665SW7665W7SW7
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Tide / Current Tables for Des Moines, Washington
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Des Moines
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Sun -- 03:28 AM PDT     11.07 feet High Tide
Sun -- 04:51 AM PDT     Moonrise
Sun -- 06:12 AM PDT     Sunrise
Sun -- 10:34 AM PDT     -1.78 feet Low Tide
Sun -- 05:43 PM PDT     12.15 feet High Tide
Sun -- 07:42 PM PDT     Moonset
Sun -- 08:11 PM PDT     Sunset
Sun -- 11:13 PM PDT     5.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.18.5101110.99.985.42.5-0-1.5-1.6-0.42.15.18.210.511.912.111.39.77.76.15.3

Tide / Current Tables for Tacoma, Commencement Bay, Sitcum Waterway, Puget Sound, Washington (sub)
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Tacoma
Click for Map
Sun -- 03:34 AM PDT     11.35 feet High Tide
Sun -- 04:52 AM PDT     Moonrise
Sun -- 06:13 AM PDT     Sunrise
Sun -- 10:25 AM PDT     -1.88 feet Low Tide
Sun -- 05:41 PM PDT     12.01 feet High Tide
Sun -- 07:42 PM PDT     Moonset
Sun -- 08:11 PM PDT     Sunset
Sun -- 11:14 PM PDT     5.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.98.510.111.211.210.28.25.42.3-0.3-1.7-1.6-02.65.68.510.611.81211.29.77.765.2

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Pendleton, OR (7,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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.