Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Grayland, 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 6:15AMSunset 8:22PM Thursday August 17, 2017 6:03 PM PDT (01:03 UTC) Moonrise 12:49AMMoonset 4:17PM Illumination 19% Phase: Waning Crescent; Moon at 25 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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PZZ110 Grays harbor bar- 258 pm pdt Thu aug 17 2017 combined seas 2 to 5 ft. Bar conditions light. The maximum ebb currents will occur around 2 am and 245 pm Friday. The early morning ebb current will be strong. PZZ100 258 Pm Pdt Thu Aug 17 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 higher pres offshore with lower pres east of the cascades.

7 Day Forecast for Marine Location Near Grayland, WA
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location: 46.86, -124.07     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 172142
afdpqr
area forecast discussion
national weather service portland or
242 pm pdt Thu aug 17 2017

Synopsis Persistent surface high pressure over the NE pacific
combined with low pressure east of the cascades will maintain onshore
winds the next several days. Slight variations of the upper level
pressure pattern will result in slight variations in how expansive
nighttime morning clouds will be through early next week. The clouds
should clear in the afternoons with temperatures remaining near the
seasonal normals. An upper level ridge is expected early next week
for less clouds and slightly warmer temperatures.

Short term This afternoon through Sunday... Morning clouds have
cleared from all but the most northern oregon coast and southern
washington coast. Even there, though, skies should become sunny by
late afternoon. Expect a quick return of marine stratus to the coast
late this evening with a little bit less inland penetration,
particularly south of about salem where skies may remain clear
tonight.

There will be little change in the weather Friday as another upper
level trough passes by to the north and low-level onshore winds
persist. The marine layer should deepen late Friday night and early
Saturday morning as an upper level trough develops over NW oregon for
a better chance for more widespread clouds Saturday morning.

Therefore the temperatures Saturday afternoon will be slightly
cooler. The pattern remains much the same Sunday, but 850 mb
temperatures warm a couple of degrees, so expect seasonable but
slightly warmer afternoon temperatures Sunday after morning clouds
dissipate. Bowen

Long term Sunday night through Thursday... First up, for your
eclipse forecast: thermal trough that develops along the northern
california coast may be the saving grace for eclipse viewers on
oregon's central coast. The ECMWF brings that trough north into
southwest oregon, which may turn flow offshore enough to keep clouds
out of the path of totality along the coast. We know eclipse viewers
are rooting for that solution. However, the evil GFS is keeping the
thermal trough farther south and flow more northerly which would
allow marine clouds to come onshore along oregon's central coast.

Really and truly we have two scenarios: one where the sky along the
coast remains overcast and another where the sky is clear and it's
about 50-50 right now which scenario will occur. Locations farther
north up near astoria have a higher chance of marine clouds sticking
around through the eclipse. For those inland, under northerly or
northeasterly flow we typically don't see marine clouds make it very
far inland, so locations from the coast range eastward have a very
good chance of clear skies for the eclipse Monday morning.

The approaching trough will make it to our area on Wednesday,
bringing a chance for drizzle or light rain to the north coast on
Wednesday and cloud cover for the rest of the area. As the trough
moves inland, there will be a slight chance for thunderstorms up in
the cascades Wednesday afternoon and evening. As the trough
continues to pass over the area, expect another slight chance of
thunderstorms in the cascades on Thursday. -mccoy

Aviation Dry and stable northwesterly flow aloft. Marine
stratus around astoria and northward into early this evening,
as well as pockets of stratus to north of kalama until around
23z. GenerallyVFR overnight with light flow aloft. But will see
coastal stratus return later tonight to the coast and inland
areas north of salem. But, like today, clouds will break up over
most areas between 18z and 20z.

Kpdx and approaches...VFR tonight with light northwesterly winds
through this evening. Will see MVFR stratus creep back into
region from the north after 11z, linger Fri am, then burn out
between 18z and 20z fri. rockey.

Marine Rather persistent pattern through Sunday, with high
pres over the pac, and thermal low pres over NW calif and sw
oregon. This will maintain northerly winds, with gustier winds
in afternoon evenings, primarily to south of newport.

Seas will generally 5 to 7 ft through the period, but may build
to around 8 ft at times to south of newport with the stronger
north winds. rockey

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds through late tonight on
coastal waters from cascade head to florence.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 4 mi87 min NW 11 G 13 60°F 58°F1023 hPa
46211 - Grays Harbor, WA (036) 9 mi33 min 56°F7 ft
TOKW1 - 9440910 - Toke Point, WA 12 mi45 min WNW 12 G 14 63°F 63°F1022.6 hPa
46243 - Clatsop Spit, OR - 162 45 mi33 min 61°F6 ft
46096 48 mi153 min NNW 9.7 G 12 57°F 60°F1023.9 hPa
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 48 mi73 min NW 5.8 G 7.8 60°F 61°F7 ft1023.3 hPa (-0.4)
ASTO3 - 9439040 - Astoria, OR 48 mi45 min NW 8 G 9.9 65°F 71°F1022.1 hPa
46100 48 mi193 min WNW 1.9 60°F 59°F1024 hPa

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from HQM (wind in knots)
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Last 24hrW5W7SW13SW13SW16SW14SW14SW12SW11SW8W9W8W8W4W5W8W7W9W9W6W7W5W5W8
1 day agoW5S7--W10W13W11W13W9W12
G18
W14W6W8W4W5W5W4CalmSW33SW3CalmCalmCalmW3
2 days agoW44S9SW12SW12W11W13W12W14W10W5NW6CalmCalmCalmCalmCalmNE4CalmCalmCalmNE3NE3Calm

Tide / Current Tables for Bay City, South Bay, Grays Harbor, Washington
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Bay City
Click for Map
Thu -- 01:49 AM PDT     Moonrise
Thu -- 03:32 AM PDT     -0.19 feet Low Tide
Thu -- 06:16 AM PDT     Sunrise
Thu -- 10:21 AM PDT     6.96 feet High Tide
Thu -- 03:19 PM PDT     3.18 feet Low Tide
Thu -- 05:17 PM PDT     Moonset
Thu -- 08:22 PM PDT     Sunset
Thu -- 09:53 PM PDT     9.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.231.1-0-0.10.723.65.16.36.96.8653.93.23.34.25.57.18.59.59.89.1

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Thu -- 01:00 AM PDT     -3.29 knots Max Ebb
Thu -- 01:49 AM PDT     Moonrise
Thu -- 04:30 AM PDT     0.00 knots Slack
Thu -- 06:16 AM PDT     Sunrise
Thu -- 08:01 AM PDT     1.77 knots Max Flood
Thu -- 10:33 AM PDT     -0.00 knots Slack
Thu -- 01:35 PM PDT     -1.87 knots Max Ebb
Thu -- 04:07 PM PDT     0.00 knots Slack
Thu -- 05:17 PM PDT     Moonset
Thu -- 07:12 PM PDT     1.75 knots Max Flood
Thu -- 08:22 PM PDT     Sunset
Thu -- 10:16 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-3-3.3-2.9-1.9-0.60.51.21.61.81.50.7-0.5-1.3-1.8-1.8-1.2-0.10.81.51.71.71.30.4-1.1

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 Portland, OR (21,6,7,8)
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Ground Weather Radar Station Portland, OR
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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.