Saturday, August17, 2019 L-36.com


Marine Weather and Tides
Black Diamond, WA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:05AMSunset 8:18PM Saturday August 17, 2019 7:12 AM PDT (14:12 UTC) Moonrise 8:39PMMoonset 7:05AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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- 315 Am Pdt Sat Aug 17 2019
Today..S wind to 10 kt. Wind waves 1 ft or less.
Tonight..Variable wind 5 to 10 kt becoming S to 10 kt after midnight. Wind waves 1 ft or less.
Sun..S wind to 10 kt. Wind waves 1 ft or less.
Sun night..NW wind to 10 kt becoming S after midnight. Wind waves 1 ft or less.
Mon..Light wind. Wind waves less than 1 ft.
Mon night..N wind to 10 kt. Wind waves 1 ft or less.
Tue..Variable wind to 10 kt becoming sw. Wind waves 1 ft or less.
Wed..S wind to 10 kt becoming sw 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 315 Am Pdt Sat Aug 17 2019
Synopsis for the northern and central washington coastal and inland waters..Weak onshore flow will continue through the weekend. Surface flow becoming light Monday and Tuesday with a weakening front on Wednesday.


7 Day Forecast for Marine Location Near Black Diamond, WA
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location: 47.3, -122     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 171022
afdsew
area forecast discussion
national weather service seattle wa
322 am pdt Sat aug 17 2019

Synopsis Onshore flow will continue this weekend as a weak
weather system passes mostly to the north of the region. The
onshore flow will weaken early next week as ridging strengthens
for warmer temperatures and more sun. A weak front is expected
around the middle of next week for a chance of showers and
somewhat cooler temperatures.

Short term today through Monday Onshore flow continues this
morning with several layers of clouds covering most of western
washington. Upper ridging from earlier in the week has retrograded
offshore as a weak weather system passes mostly to our north and
east. Apart from stubborn cloud cover and slightly below normal
temperatures, weak troughing over the region won't generate much
weather for us. There may be a few pockets of morning drizzle near
the coast and some weak convergence north of seattle this
afternoon, but that's about it.

The flow aloft will back from northwesterly to westerly on Sunday
as another weather system passes mostly to our north. Much like
today, the sensible weather conditions will be virtually the same
with perhaps a little better chance of some late afternoon or
evening clearing. Upper ridging builds over the area on Monday in
response to a deepening trough offshore. The low level flow will
turn weakly offshore by later in the day. This will spell earlier
afternoon clearing and high temperatures closer to normal.

Long term Tuesday through Friday
Upper ridging continues to strengthen into Tuesday as an upper
trough lifts northeastward well offshore. Light offshore flow will
turn rather quickly onshore by later in the day, but not before
much of the interior sees what will probably be the warmest day
of the week with areas from about everett southward getting into
the 80s.

Whatever is left of a weak front will move onshore on Wednesday.

The 00z model runs have backed off with pops for the midweek front
compared to their 12z predecessors. Given the model inconsistencies,
not much was changed with the midweek forecast. For the rest of
the extended period, zonal flow aloft and typical summertime low
level onshore flow make climo temps and dry conditions a safe bet.

27

Aviation Weak low level onshore flow continuing through the
weekend. Northwesterly flow aloft becoming westerly on Sunday.

A couple of cloud layers over the area this morning. One a
scattered to broken layer around 2500 feet and the other a broken
to overcast layer in the 5000-6000 foot range. Lower layer will
become more consolidated and lower down to 1500 to 2000 feet by
15z. The lower layer will scatter out 18z-20z with the higher
layer remaining intact throughout the day. With the low level flow
remaining light onshore lower layer reforming in the 1000-2000
foot range early Sunday morning.

Ksea... Ceilings around 3000 feet lowering down to 1500-2000 feet
by 15z. This layer will scatter out around 19z with ceilings
around 5000 feet for most of the afternoon into the evening hours.

Ceilings lowering back down to near 1500 feet early Sunday
morning. Winds southwesterly 4 to 8 knots. Felton

Marine Weak onshore flow will continue through the
weekend. Surface flow becoming light Monday and Tuesday with a
weakening front on Wednesday. Small craft advisory winds possible
over the coastal waters as the front reaches the area.

Hydrology The daily hydrology discussion has ended until the
start of the next rainy season; it will only be updated as needed
until then.

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 22 mi60 min NNW 4.1 G 4.1
TCNW1 - 9446484 - Tacoma, WA 22 mi60 min 62°F 57°F1016.6 hPa
WPOW1 - West Point, WA 34 mi72 min SSE 6 G 6 59°F 1016.3 hPa (+0.0)56°F
46120 38 mi36 min S 1.9 59°F 1014.9 hPa56°F
46121 39 mi41 min 61°F 1015.9 hPa57°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA18 mi19 minSE 34.00 miOvercast62°F55°F80%1016.5 hPa
Seattle, Seattle-Tacoma International Airport, WA19 mi19 minS 410.00 miOvercast60°F54°F80%1016.7 hPa
Pierce County-Thun Field, WA20 mi37 minN 010.00 miOvercast57°F57°F100%1016.6 hPa
Boeing Field - King County International Airport, WA22 mi19 minSW 410.00 miOvercast61°F54°F78%1016 hPa

Link to 5 minute data for KRNT

Wind History from RNT (wind in knots)
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Last 24hrS6S6S5S66S5SW5W5S5S7SW8S6SW5CalmCalmCalmS3CalmCalmS3SE3S3CalmSE3
1 day agoS5S5S3S46S5S7CalmW8SW6W5SW3S4CalmSW3SW4S7S6S7S6S4S7S5S6
2 days agoS3CalmN3NW6NW7NW6N6NW7N5N6NW6NW7NW6NW8NW8N6N54N4NW3CalmS4SE3S4

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Sat -- 01:07 AM PDT     5.17 feet Low Tide
Sat -- 06:08 AM PDT     Sunrise
Sat -- 06:15 AM PDT     9.91 feet High Tide
Sat -- 08:06 AM PDT     Moonset
Sat -- 12:58 PM PDT     0.03 feet Low Tide
Sat -- 07:52 PM PDT     11.62 feet High Tide
Sat -- 08:17 PM PDT     Sunset
Sat -- 09:40 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.85.25.56.689.29.99.78.66.84.62.40.600.72.557.69.811.211.6119.77.9

Tide / Current Tables for Tacoma, Commencement Bay, Washington
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Tacoma
Click for Map
Sat -- 01:07 AM PDT     5.17 feet Low Tide
Sat -- 06:08 AM PDT     Sunrise
Sat -- 06:17 AM PDT     10.01 feet High Tide
Sat -- 08:07 AM PDT     Moonset
Sat -- 12:58 PM PDT     0.03 feet Low Tide
Sat -- 07:54 PM PDT     11.73 feet High Tide
Sat -- 08:17 PM PDT     Sunset
Sat -- 09:40 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.85.25.56.689.3109.88.76.94.72.40.700.72.557.69.911.311.711.29.87.9

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (10,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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.