Friday, April20, 2018 L-36.com


Marine Weather and Tides
Ashford, WA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:08AMSunset 8:07PM Friday April 20, 2018 11:30 AM PDT (18:30 UTC) Moonrise 8:48AMMoonset 12:00AM Illumination 29% Phase: Waxing Crescent; Moon at 5 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- 820 Am Pdt Fri Apr 20 2018
.small craft advisory in effect from this evening through late tonight...
Today..S wind to 10 kt. Wind waves 1 ft or less. A slight chance of rain in the afternoon.
Tonight..SW wind to 10 kt becoming S 15 to 25 kt after midnight. Wind waves 1 ft or less building to 2 to 4 ft after midnight. A slight chance of rain in the evening then rain after midnight.
Sat..SW wind 5 to 15 kt easing to variable in the afternoon. Wind waves 2 ft or less. A chance of showers in the morning then a slight chance of showers in the afternoon.
Sat night..NW wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Sun..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Sun night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Mon..Light wind becoming N to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Tue..Light wind becoming nw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 820 Am Pdt Fri Apr 20 2018
Synopsis for the northern and central washington coastal and inland waters..A cold front will move through western washington tonight. High pressure will build into the region over the weekend. Thermal low pressure will set up along the oregon coast Monday and Tuesday as an upper ridge shifts over the pacific northwest.

7 Day Forecast for Marine Location Near Ashford, WA
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location: 46.81, -122.06     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 201548
afdsew
area forecast discussion
national weather service seattle wa
848 am pdt Fri apr 20 2018

Synopsis High pressure will shift east of the area this
morning. A warm front will brush by late this afternoon into the
early evening hours. The trailing cold front will move through
overnight. Upper level trough crossing western washington Saturday
morning with a dry upper level trough moving through Sunday
morning. An upper level ridge will build in Sunday night and
remain over western washington through most of next week
producing the longest dry spell of the month.

Short term An upper ridge over the area will shift inland
today. It will be dry for most of the area. Highs will be near
normal. A weak warm front could bring some spotty light rain to
the coast and olympics late in the afternoon. The warm front will
move through the area this evening with spotty light rain -
mainly coast and northwest interior. A trailing cold front will
bring a quick shot of rain to most of the area later tonight.

Showers behind the front will quickly become mostly confined to
the mountains Saturday. Moderate onshore flow will produce breezy
to locally windy conditions behind the cold front. It will be a
few degrees cooler but still close to normal. A puget sound
convergence zone will likely form during the day and linger into
Saturday night.

Sunday is looking dry with decreasing clouds. A weak upper trough
will cross the area in the morning with an upper upper ridge
building in from the west later in the day. Highs will once again
be near normal. Schneider

Long term Previous discussion... Extended models in much better
agreement tonight with the front for Wednesday that was in the
00z april 19th GFS run nowhere in sight on the current 00z run.

Upper level ridge moving over the area on Monday and remaining in
place through Thursday. Temperatures aloft warming during the
period with model 850 mb temperatures in the plus 2 to 4c range on
Monday warming to the plus 10 to 14c range by Wednesday and
Thursday. Surface gradients never turn strongly offshore but with
the warming temperatures aloft and a decrease in onshore flow high
temperatures will climb into the lower 70s in the warmer
locations by Tuesday and remain there into Thursday. Expect the
remainder of the area to have highs in the 60s. This looks to be
the warmest stretch of april weather since the record breaking 4
straight days of 80s in seattle april 17-20, 2016. Seattle did not
have a 70 degree plus day in april 2017. Felton

Aviation The air is dry and stable this morning, but clouds will
increase through this evening as a weak warm front clips the area.

Some areas of light rain will develop on the coast this afternoon,
but that should mostly dry up as it moves across the interior of
western washington this evening. Then, the cold front will arrive
and rain will increase tonight as the cold front moves ashore. Rain
will turn to showers Saturday morning, and a pscz should form too.

Ksea... High clouds increase, a mid level deck and some sprinkles
this evening, then rain develops with lowering CIGS overnight.

Showers and a pscz are likely Saturday. The pscz could stay over the
city for sometime through the middle part of the day with lingering
showers.

Marine A warm front will clip the area this afternoon and evening
and then a stronger cold front will push through the area overnight.

Small craft advisories will be up for the waters tonight through
Saturday morning. High pressure will build into the area behind the
front and into Sunday. A thermal trough will set up along the oregon
coast Monday and Tuesday, so we will probably see northerly breezes
develop over western washington Monday and Tuesday--perhaps stronger
than the current forecast and better for afternoon sailing than the
current forecast indicates.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 11 am pdt Saturday for coastal waters
from CAPE flattery to james island 10 to 60 nm-coastal
waters from james island to point grenville 10 to 60 nm-
coastal waters from point grenville to CAPE shoalwater 10
to 60 nm.

Small craft advisory from 5 pm this afternoon to 11 am pdt
Saturday for coastal waters from CAPE flattery to james
island out 10 nm-coastal waters from james island to point
grenville out 10 nm-coastal waters from point grenville to
cape shoalwater out 10 nm.

Small craft advisory from 11 pm this evening to 5 pm pdt
Saturday for central u.S. Waters strait of juan de fuca-
east entrance u.S. Waters strait of juan de fuca-west
entrance u.S. Waters strait of juan de fuca.

Small craft advisory from 11 pm this evening to 11 am pdt
Saturday for northern inland waters including the san juan
islands.

Small craft advisory from 11 pm this evening to 5 am pdt
Saturday for admiralty inlet-puget sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 37 mi49 min 54°F 48°F1024.5 hPa
TCMW1 - 9446482 - Tacoma Met, WA 37 mi49 min NNW 5.1 G 5.1
46121 48 mi34 min 50°F 1024.3 hPa41°F
EBSW1 - 9447130 - Seattle, WA 57 mi43 min NW 5.1 G 5.1 51°F 47°F1024.7 hPa

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pierce County-Thun Field, WA24 mi36 minN 010.00 miFair57°F39°F51%1024 hPa

Wind History from PLU (wind in knots)
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Last 24hrNW344CalmNW64CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3
1 day agoN5Calm44563CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoSW6
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SW95S7S10S6CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm43

Tide / Current Tables for Tacoma, Commencement Bay, Washington
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Tacoma
Click for Map
Fri -- 12:29 AM PDT     Moonset
Fri -- 02:49 AM PDT     5.94 feet Low Tide
Fri -- 06:12 AM PDT     Sunrise
Fri -- 07:58 AM PDT     11.04 feet High Tide
Fri -- 09:48 AM PDT     Moonrise
Fri -- 03:06 PM PDT     -1.36 feet Low Tide
Fri -- 08:05 PM PDT     Sunset
Fri -- 10:23 PM PDT     11.76 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.17.56.366.67.99.410.61110.58.96.741.5-0.5-1.4-0.813.56.48.910.811.711.6

Tide / Current Tables for Tacoma, Commencement Bay, Sitcum Waterway, Puget Sound, Washington (sub)
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Tacoma
Click for Map
Fri -- 12:29 AM PDT     Moonset
Fri -- 02:48 AM PDT     6.05 feet Low Tide
Fri -- 06:11 AM PDT     Sunrise
Fri -- 08:04 AM PDT     10.99 feet High Tide
Fri -- 09:47 AM PDT     Moonrise
Fri -- 03:02 PM PDT     -1.53 feet Low Tide
Fri -- 08:05 PM PDT     Sunset
Fri -- 10:13 PM PDT     11.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
97.56.46.16.77.99.310.51110.59.16.84.11.4-0.7-1.5-0.81.246.89.310.911.611.4

Weather Map and Satellite Images
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wmap_P
GOES Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Seattle, WA (14,3,4,5)
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Ground Weather Radar Station Portland, OR
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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.