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Marine Weather and Tides Rainier, OR 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.

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Sunrise 5:55AM

Sunset 8:40PM

Monday August 3, 2020 10:46 PM PDT (05:46 UTC)

Moonrise 8:12PM

Moonset 4:40AM

Illumination 100%

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.

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7 Day Forecast for Marine Location Near Rainier, OR

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Area Discussion for - Portland, OR

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FXUS66 KPQR 040432 AAA AFDPQR

Area Forecast Discussion . UPDATED National Weather Service Portland OR 932 PM PDT Mon Aug 3 2020

Updated Aviation discussion

SYNOPSIS. A mixture of morning clouds and afternoon sunshine with temperatures near to slightly above average for the next several days. Widespread light rain is expected to start late Wednesday night and persist through Thursday. Friday look for breezy conditions with temperatures close to average.

SHORT TERM. Tonight through Wednesday . The morning marine clouds along the coast will continue to recede into the evening hours as shortwave ridging will build through tonight. This pattern will maintain rather clear skies inland but, expect the coast to maintain some clouds as moist onshore flow will persist. On Tuesday, expect breezy conditions across the CWA as a thermally induced trough briefly develops within the Willamette Valley, along with gusty conditions within the central and eastern part of the Columbia River Gorge and gaps along the Cascades. /42

LONG TERM. Wednesday night through Monday . Models and ensembles continue to remain in overall agreement that the next system will start to slide southeast along the British-Columbia Coast starting Wednesday night. This distended trough will extend down towards the CWA and looks to provide a fair chance for rain starting Thursday. There is remains a fair amount of uncertainty between the model families as to the exact timing and amount of the precipitation but, they all do agree that there is a chance for precipitation on Thursday across the CWA.

Friday and into the weekend the forecast becomes a lot less cohesive as model families start to diverge significantly in the overall pattern. GEFS models have shortwave troughing developing Friday and persisting through Monday. While EPS models have shortwave ridging developing for the weekend and becoming more zonal by the start of next week. CMCE models develop a zonal pattern for the weekend followed by a shortwave trough for the start of next week. Taking all of this into account have chosen to go with a blend of models which has very little change if any from the NBM . Overall, what can be expected is onshore flow to persist from Friday through Monday along with closer to seasonal temperatures for the CWA. /42

AVIATION. VFR continues across the area except for the coastal strip where patches of IFR to LIFR cigs are developing. Currently from about KONP to KOTH cigs are below 1000 ft. Models show this will expand along the coast overnight and should dissipate 18-21Z Tue.

HREF model has clouds inland possibly back building off the Cascade foothills into the valley, or simply forming in the valley Tue morning. GFS BUFR soundings indicate possibly a SCT layer near 1000 ft 12-16Z Tue. The NAM BUFR was over doing it yesterday and appear so again tonight as it shows BKN-OVC during the same time period.

KPDX and APPROACHES . VFR at the terminal and vicinity. Latest HREF models indicates clouds forming along the Columbia river to near KSPB, and as mentioned above possible back building of the Cascade foothills. For now will keep PDX VFR with a SCT layer around 1000 ft, but have KTTD with a BKN layer at that level. Whatever clouds develop, should see it dissipate 18-19Z Tue. /mh

MARINE. Surface high pressure over the waters will be the dominant feature through Wed. Thermally-induced surface low pressure builds over the far south Oregon coast Wed afternoon, which will enhance the prevailing northerlies. The 12Z model guidance indicates 20-25 kt boundary layer wind speeds generally south of Cascade Head late Tue afternoon through Tue evening. At this time, will hold off on issuing an advisory. Gradients weaken Wed as a frontal system approaches the waters. Guidance indicates a narrow ribbon of 20-25 kt northwest wind gusts 12Z Thu behind the front, but looks to be short-lived. Typical summertime northerlies return Fri into the weekend for a much higher likelihood of small craft advisory level wind.

Seas are currently around 3-5 ft and will remain in this range through Wednesday. Seas look to then build to around 5-7 ft by Thursday then to around 6-8 ft later this week. Longer range guidance shows sub-10 ft seas Friday through the weekend. Weishaar

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 Temp	Water Temp	Waves	Pressure	DewPt
LOPW1 - 9440422 - Longview, WA	0 mi	47 min			72°F		1020 hPa (+0.4)
ASTO3 - 9439040 - Astoria, OR	44 mi	47 min	SSE 1.9 G 2.9	64°F	72°F		1020.7 hPa (-0.3)
46243 - Clatsop Spit, OR - 162	63 mi	51 min			59°F	3 ft

Wind History for Longview, WA

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Last 24hr

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Southwest Washington Regional Airport, WA	3 mi	51 min	N 0	mi	Fair	68°F	60°F	76%	1020.5 hPa
Scappoose Industrial Airpark, OR	23 mi	54 min	N 4	10.00 mi	Fair	71°F	57°F	61%	1018.7 hPa

Link to 5 minute data for KKLS

Wind History from KLS (wind in knots)

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Tide / Current Tables for Knappa, Knappa Slough, Columbia River, Oregon

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Tide / Current Tables for Vancouver, Columbia River, Washington (dubious accuracy)

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Weather Map

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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

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Wind Forecast for Portland, OR (1,6,7,8)

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Ground Weather Radar Station Portland, OR

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