Wednesday, August5, 2020
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Marine Weather and Tides
Grayland, WA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:59AMSunset 8:43PM Wednesday August 5, 2020 6:31 AM PDT (13:31 UTC) Moonrise 9:12PMMoonset 6:58AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 232 am pdt Wed aug 5 2020 combined seas 3 to 4 feet. Bar conditions light. Maximum ebb currents will occur around 615 am and 7 pm today. The morning ebb will be strong.
PZZ100 232 Am Pdt Wed Aug 5 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will continue this week with the strongest onshore push on Thursday as a cold front moves inland.


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 051010 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 231 AM PDT Wed Aug 5 2020

SYNOPSIS. Expect a mixture of morning clouds and afternoon sunshine with temperatures near average for much of the next week. The main exception to this will be Wednesday night into Thursday when cooler temperatures and light rain should spread northwest to southeast across the area.

SHORT TERM. Today through Friday . Water vapor satellite imagery early this morning reveals a shortwave trough over the northeast Pacific dropping southeastward towards the Pacific Northwest. Shortwave ridging is shifting eastward into the Rocky Mountain states, but lingering 850mb temperatures of 14-16C should still allow temperatures to climb into the 80s in the Willamette Valley and Columbia River Gorge this afternoon. Onshore pressure gradients will increase rather dramatically this afternoon and support particularly gusty winds (at least relative to normal) through the typical Coast Range gaps and Columbia River Gorge this evening.

Models and their ensembles are in good agreement the aforementioned shortwave trough will swing eastward across Washington and far northern Oregon late tonight into Thursday morning. This should result in a weakening front sliding southeastward across the area and result in a period of light rain spreading across the region. Best rain chances and highest QPF will be in the Willapa Hills/N OR Coast Range, where some locations should pick up a 0.25-0.50". Coastal locations should generally receive 0.10-0.25" of rain from this system, while most of the Willamette Valley will likely struggle to achieve a tenth of an inch. With that said, the latest GEFS and EPS data suggests a tenth of an inch may not be quite as hard to achieve as earlier model guidance suggested, particularly for Portland and points northward. As daytime heating turns over the lower atmosphere behind the main band of rain, some low level instability will likely generate a few additional showers that will linger across the interior lowlands and points eastward into Thursday evening. Given the much cooler temperatures aloft and increased cloud cover, high temperatures should end up 5-10F below average on Thursday.

Low level onshore flow under weak upper level troughing will persist into Friday. Nonetheless, temperatures aloft should warm sufficiently enough to support high temperatures just a couple degrees below average on Friday. /Neuman

LONG TERM. Saturday through Tuesday . Models and their ensembles suggest varying degrees of onshore flow will persist over the weekend and into early next week. There are still variations as to how much influence a low amplitude shortwave ridge or a shortwave trough will have on the region early next week. As a result, opted for a middle of the road scenario, which generally keeps temperatures within 5F of average throughout the extended forecast. With that said, there is definitely some potential for the forecast to trend warmer or cooler by quite a bit if some of the more extreme scenarios pan out. /Neuman

AVIATION. Marine stratus generally continues along the coast and in the coastal valleys early this morning resulting in a mix of conditions from low MVFR to LIFR. Expect stratus to expand up the lower Columbia to about KSPB, with some stratus also forming along the Cascade foothills around sunrise. Low MVFR or IFR cigs should make it into the south Willamette Valley by 12Z resulting in a few hours of reduced flight conditions for KEUG. Otherwise, most interior TAF sites will remain VFR with mostly clear skies and diurnal winds. Expect inland stratus to clear by 18Z. Coastal area will take a few hours longer to clear, but KONP may only see little improvements this afternoon. A deeper marine layer should result in higher cigs this evening as a weak front approaches the coast.

KPDX and APPROACHES . Aside from a few hours of MVFR stratus in the vicinity between 12-18Z expect conditions to remain mainly VFR with mostly clear skies and diurnal winds increasing during the afternoon/evening hours.

MARINE. Surface high pressure over the waters will weaken later today as the next frontal system approaches the region. The front will move across the waters tonight into Thursday resulting in a brief period of southwesterly winds. Another frontal system looks to brush by the northern waters on Friday. Summertime northerlies then return late Friday and continue through the weekend and into early next week for a higher likelihood of advisory winds.

Seas look to remain in the 3-5 ft range Thursday. Slightly higher wave heights move into the waters late Thursday behind the front, but remain below 10 ft. Seas of 6-9 ft occur late in the weekend, primarily due to building fresh northwest swell.

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . None.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPTW1 - 9441102 - Westport, WA 4 mi56 min NW 8 G 9.9 56°F 57°F1015.8 hPa
46211 - Grays Harbor, WA (036) 9 mi36 min 56°F3 ft
TOKW1 - 9440910 - Toke Point, WA 12 mi44 min NNW 5.1 G 8 58°F 62°F1016.1 hPa
46099 28 mi102 min NNW 7.8 58°F 56°F1015.4 hPa
46243 - Clatsop Spit, OR - 162 45 mi36 min 58°F3 ft
46100 48 mi102 min NNW 9.7 35°F 63°F1015.6 hPa
ASTO3 - 9439040 - Astoria, OR 48 mi44 min SSE 1.9 G 4.1 58°F 69°F1015.9 hPa
46041 - CAPE ELIZABETH- 45NM Northwest of Aberdeen, WA 49 mi22 min NNW 9.7 G 12 59°F 60°F1015.7 hPa56°F

Wind History for Westport, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA10 mi39 minW 510.00 miA Few Clouds55°F53°F93%1016.1 hPa

Link to 5 minute data for KHQM

Wind History from HQM (wind in knots)
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Last 24hrCalmSE3S3S3CalmW6W10W13W13W11W8W8W12W7W6W5W5W4W5W4CalmW4W3W5
1 day agoCalmS3S3SW5SW3W5W7W7W8W11W9W10W8W6W5W5W3W7W3W4W3CalmCalmCalm
2 days agoE3CalmW4CalmW3W6W8W10W12W10SW10W9W9W6W5SW4SW3SW6SW3SW3CalmSW3CalmS3

Tide / Current Tables for Bay City, Tillamook Bay, Oregon
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Bay City
Click for Map
Wed -- 02:24 AM PDT     7.31 feet High Tide
Wed -- 06:01 AM PDT     Sunrise
Wed -- 07:57 AM PDT     Moonset
Wed -- 09:43 AM PDT     -0.48 feet Low Tide
Wed -- 03:52 PM PDT     6.21 feet High Tide
Wed -- 08:41 PM PDT     Sunset
Wed -- 09:44 PM PDT     2.06 feet Low Tide
Wed -- 10:11 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.16.47.27.26.55.23.61.90.6-0.3-0.40.21.63.34.95.96.25.853.92.92.22.12.7

Tide / Current Tables for Grays Harbor Entrance, Washington Current
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Grays Harbor Entrance
Click for Map
Wed -- 02:39 AM PDT     -0.01 knots Slack
Wed -- 06:01 AM PDT     Sunrise
Wed -- 06:19 AM PDT     -3.63 knots Max Ebb
Wed -- 07:58 AM PDT     Moonset
Wed -- 09:38 AM PDT     0.01 knots Slack
Wed -- 01:02 PM PDT     2.42 knots Max Flood
Wed -- 03:50 PM PDT     -0.00 knots Slack
Wed -- 06:52 PM PDT     -2.38 knots Max Ebb
Wed -- 08:42 PM PDT     Sunset
Wed -- 09:38 PM PDT     0.00 knots Slack
Wed -- 10:12 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.60.9-0.5-2-3.1-3.6-3.4-2.4-0.90.51.62.22.42.21.2-0.2-1.4-2.1-2.4-1.9-0.80.41.3

Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Portland, OR (9,2,3,4)
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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 numerous 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.