Saturday, August19, 2017 L-36.com


Marine Weather and Tides
Ocean City, 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 6:18AMSunset 8:19PM Saturday August 19, 2017 11:45 AM PDT (18:45 UTC) Moonrise 2:50AMMoonset 6:07PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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PZZ156 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- 848 Am Pdt Sat Aug 19 2017
Today..NW wind 5 to 15 kt. Wind waves 1 to 2 ft. W swell 6 ft at 9 seconds.
Tonight..NW wind 10 to 20 kt becoming 5 to 15 kt after midnight. Wind waves 1 to 3 ft. W swell 6 ft at 9 seconds.
Sun..NW wind 5 to 15 kt. Wind waves 2 ft or less. W swell 5 ft at 10 seconds.
Sun night..NW wind 5 to 15 kt. Wind waves 2 ft or less. W swell 4 ft at 9 seconds.
Mon..NW wind 5 to 15 kt. Wind waves 2 ft or less. W swell 4 ft at 9 seconds.
Mon night..NW wind 5 to 15 kt. Wind waves 1 to 2 ft. W swell 5 ft at 9 seconds.
Tue..NW wind 5 to 15 kt. Wind waves 2 ft or less. W swell 4 ft.
Wed..NW wind 5 to 15 kt. Wind waves 2 ft or less. W swell 4 ft.
PZZ100 848 Am Pdt Sat Aug 19 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.

7 Day Forecast for Marine Location Near Ocean City, WA
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location: 47.09, -124.17     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 191525
afdsew
area forecast discussion
national weather service seattle wa
825 am pdt Sat aug 19 2017

Synopsis Light onshore flow caused by weak systems passing to the
north will provide some late night and morning clouds and
slightly cooler temperatures through Sunday. High pressure
offshore will shift eastward and across the area Monday and
Tuesday giving warmer temperatures and dry conditions; morning
low clouds will be confined to the coast. A low pressure trough
will bring a chance of showers late Wednesday and Thursday, along
with cooler high temperatures. High pressure will build over the
area Friday through next weekend for a return to dry and warmer
weather.

Short term Morning satellite imagery shows areas of stratus in
the interior and on the north coast. These clouds will gradually
erode midday resulting in mostly sunny skies this afternoon.

Rather deep marine air is in place over western washington this
morning, so high temperatures today will be held to near or
slightly below normal for this time of year today.

Latest short term models show the next weak system upstream weaker
and a bit farther north than what was shown on earlier solutions.

With this change, forecasts were updated to cut back a bit on
cloud cover for Sunday and to remove any chance of precipitation
from the forecast for the northwestern portion of the olympic
peninsula. There will still be some scattered mid level clouds on
Sunday, but they will have little impact on weather conditions.

High temperatures on Sunday will likely be a degree or two higher
than today, still around normal for late august.

A ridge of high pressure will build offshore Sunday night then
will move east across the region Monday and Monday night then to
western montana by Tuesday afternoon. With the incoming ridge, sky
cover for the solar eclipse on Monday morning is expected to be
minimal, with any low clouds confined to the immediate pacific
coastline. Temperatures on Monday will be near 80 from seattle
southward, held down a couple of degrees by the decrease in
insolation from the morning eclipse. Albrecht

Long term From the previous long term discussion: high
pressure will prevail into Tuesday with dry weather above average
temperatures. The pattern will begin to break down by Wednesday as
models indicate an upper trough will approach the region. 500 mb
heights will fall and onshore flow will start to increase,
resulting in cooling high temperatures. There are some timing
differences between the ECMWF and GFS so the arrival of showers is
a bit uncertain. The GFS would bring showers to the coast and
possibly some north interior areas by late Wednesday or Wednesday
night. Most the showers shown by the ECMWF would occur on
Thursday. Models are in pretty good agreement that precipitation
will be rather light and spotty but mostly spots have a good
chance of measuring. The coast and mountains will almost certainly
get measurable precipitation. Thursday should be the coolest day
as the main trough axis shifts across. Highs will top out in the
low 70s, and possible a bit cooler depending on the depth of the
trough. By Friday, the air mass should begin to dry out with
temperatures warming into the weekended. Mercer

Aviation Northwest flow aloft over western washington this
morning will continue through tonight, as an upper ridge remains
over the offshore waters. At the surface, onshore flow will
continue with high pressure offshore and lower pressure east of
the cascades. The air mass is somewhat moist below 7000 ft this
morning; it will gradually dry today, with limited low level
moisture tonight.

Moisture in the lower part of the atmosphere is giving sct-
bkn020 bkn050-060 over much of western washington at 8 am, with
local stratus ovc010-015 mainly in the south puget sound area and
southwest interior. These clouds will gradually become scattered
during the next few hours. Marine layer stratus tonight and Sunday
morning should be more limited.

Ksea... Northeast wind 6-12 kt becoming northwest late morning,
then northeast 4-10 kt after sunset. The clouds below 7000 ft
should become scattered by late morning. A stratus ceiling looks
unlikely tonight or Sunday morning. Mcdonnal

Marine A typical august pattern will prevail through the
middle of next week. Onshore flow of varying strength will
persist due to high pressure offshore and lower pressure east of
the cascades. Small craft advisory westerlies are likely in the
central and eastern strait of juan de fuca in the evening and
early morning hours tonight through Tuesday night. A weak front
will approach the coastal waters Wednesday. Mcdonnal

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 6 pm this evening to 5 am pdt Sunday
for central u.S. Waters strait of juan de fuca-east
entrance u.S. Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 13 mi69 min NNW 17 G 19 59°F 58°F1023.9 hPa
46211 - Grays Harbor, WA (036) 17 mi75 min 55°F5 ft
TOKW1 - 9440910 - Toke Point, WA 29 mi45 min NW 9.9 G 15 62°F 61°F1024 hPa (+0.4)
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 33 mi55 min N 9.7 G 12 59°F 60°F6 ft1024.1 hPa (+0.5)
DESW1 - Destruction Island, WA 44 mi45 min NW 8.9 G 9.9 56°F 1024.2 hPa (+0.4)
46100 46 mi175 min NNW 9.7 60°F 57°F1023.8 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA13 mi52 minW 66.00 miOvercast with Haze65°F53°F66%1024 hPa

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Last 24hrSW9SW10SW12SW12SW13W12W12W10W10W10W9W9W8W6NW4NW4Calm3CalmCalmSW6W7W8W6
1 day ago--------------------------------------------SW10SW10
2 days agoSW13SW13SW16SW14SW14SW12SW11SW8W9W8W8W4W5W8W7W9W9W6W7W5W5W8----

Tide / Current Tables for Point Brown, Grays Harbor, Washington
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Point Brown
Click for Map
Sat -- 03:50 AM PDT     Moonrise
Sat -- 05:34 AM PDT     -1.33 feet Low Tide
Sat -- 06:19 AM PDT     Sunrise
Sat -- 12:16 PM PDT     7.76 feet High Tide
Sat -- 05:33 PM PDT     2.24 feet Low Tide
Sat -- 07:06 PM PDT     Moonset
Sat -- 08:19 PM PDT     Sunset
Sat -- 11:46 PM PDT     10.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
97.352.50.3-1.1-1.2-0.31.53.55.577.77.56.553.52.42.33.24.86.78.59.7

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Sat -- 03:02 AM PDT     -3.84 knots Max Ebb
Sat -- 03:50 AM PDT     Moonrise
Sat -- 06:19 AM PDT     Sunrise
Sat -- 06:30 AM PDT     0.00 knots Slack
Sat -- 09:59 AM PDT     2.53 knots Max Flood
Sat -- 12:37 PM PDT     -0.00 knots Slack
Sat -- 03:36 PM PDT     -2.43 knots Max Ebb
Sat -- 06:19 PM PDT     0.00 knots Slack
Sat -- 07:06 PM PDT     Moonset
Sat -- 08:19 PM PDT     Sunset
Sat -- 09:41 PM PDT     2.15 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
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-1.1-2.5-3.4-3.8-3.4-2.2-0.70.61.62.32.52.10.9-0.5-1.6-2.3-2.4-1.6-0.40.81.62.12.11.7

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 Seattle, WA (14,3,4,5)
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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.