Monday, March1, 2021
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Marine Weather and Tides
Cannon Beach, OR

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:48AMSunset 6:01PM Monday March 1, 2021 2:50 PM PST (22:50 UTC) Moonrise 9:16PMMoonset 8:26AM Illumination 89% Phase: Waning Gibbous; Moon at 18 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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PZZ250 Coastal Waters From Cape Shoalwater Wa To Cascade Head Or Out 10 Nm-coastal Waters From Cascade Head To Florence Or Out 10 Nm- 102 Pm Pst Mon Mar 1 2021
.small craft advisory from 10 pm this evening through Tue evening...
Tonight..W to sw wind 5 to 10 kt, becoming W to nw 10 kt overnight. Wind waves N 1 ft at 4 seconds. NW swell 8 to 9 ft at 14 seconds this evening, then 10 ft overnight.
Tue..NW wind 5 to 10 kt. Wind waves nw 1 ft at 4 seconds. NW swell 10 to 11 ft at 14 seconds.
Tue night..W wind to 5 kt, backing to se 5 kt after midnight. Wind waves W 1 ft at 4 seconds. NW swell 9 ft at 13 seconds.
Wed..SW wind 5 to 10 kt. Wind waves sw 1 ft at 4 seconds. NW swell 8 ft at 13 seconds.
Wed night..SW wind 10 kt, becoming S 15 to 20 kt after midnight. Wind waves S 2 ft at 4 seconds. NW swell 8 to 9 ft at 13 seconds.
Thu..S wind 25 to 30 kt, with gusts to 35 kt. Combined seas 12 to 15 ft. Rain.
Fri..S wind 25 to 35 kt. Combined seas 16 to 19 ft.
Sat..SW wind 10 to 15 kt. Wind waves 3 ft. W swell 11 ft.
PZZ200 102 Pm Pst Mon Mar 1 2021
Synopsis for the southern washington and northern oregon coast.. A weakening front well offshore will slowly push across the coastal waters tonight. High pres will build across the region later Tue, and hold through Wed. Then, a return to more active weather, with a strong front arriving later Thu. Unsettled weather continues into the weekend.


7 Day Forecast for Marine Location Near Cannon Beach, OR
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location: 45.83, -123.94     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 011711 AAA AFDPQR

Area Forecast Discussion UPDATED National Weather Service Portland OR 843 AM PST Mon Mar 1 2021

. Morning update: for aviation weather.

SYNOPSIS. Mild and mainly dry Spring-like weather will hold through early Thursday before a series of storm system bring a return to valley rain and mountain snow late in the week into next weekend.

SHORT TERM. Today through Wednesday . Water vapor satellite imagery early this morning reveals a pronounced, but elongating shortwave trough over the eastern Pacific. Large scale lift ahead of this trough is result in a considerable amount of mid to high level clouds streaming across the region. These clouds should thin this afternoon as the forcing weakens due to the splitting trough offshore. This should allow temperatures once again climb into the upper 50s and perhaps clip 60F in a few spots.

Meanwhile, a weak low level front is currently located near 130W. Models are in reasonable agreement the last gasps of this feature will most likely reach our northern coastal zones this evening/overnight. This could result in a few areas of light drizzle, but most locations should remain largely dry, particularly inland locations.

Cooler temperatures aloft will spread into the region Tuesday, which should result in most locations cooling several degrees relative to Monday. However, shortwave ridging will amplify Wednesday and result in warmer air aloft and more sunshine. This should allow temperatures to rebound with inland temperatures pushing 60F Wednesday afternoon. /Neuman

LONG TERM. Wednesday night through Sunday . The overall pattern will amplify further Thursday as a large shortwave trough settles into the eastern Pacific and shortwave ridging amplifies over the Rocky Mountain states. As the broad trough elongates offshore, a front and weak to moderate atmospheric river oriented from SSW-NNE will slowly approach the region on Thursday and stall very near or over the region Thursday night into Friday. Model and ensemble guidance seems to be increasingly coming around to the idea rain will reach our coast either Thursday afternoon or evening, but will likely hold off for most inland locations until later Thursday night or early Friday. As a result, it appears temperatures in the Willamette Valley and Columbia River Gorge should once again climb to near 60F on Thursday.

Given the weaker nature of the atmospheric river, only modest frontogentic forcing anticipated along the front and the best large scale lift likely bypassing the region to our north and south Thursday night into Friday, it appears precipitation intensity should remain modest. So despite the slow moving nature of the moisture plume, QPF should remain light enough and spread out enough over time to prevent too many hydrology concerns.

Models and their ensembles continue to suggest additional shortwave troughs will swing into the Pacific Northwest over the weekend. This will keep temperatures near to slightly below average and keep precipitation chances elevated. /Neuman

AVIATION. High clouds continue to increase inland this am, as a front well offshore slowly approaches. Along the coast, will see mostly mid/high clouds into early afternoon, with only a few pockets of IFR/MVFR. But, will see increasing lower MVFR along the coast later today into this evening. The front will have a difficult time moving inland, and will nearly stall along the coast overnight. Will see occasional drizzle or light rain along the coast this evening.

Farther inland, stays VFR with mix of mid and high clouds today through this evening. But, am not expecting anything to impact TAF sites until later tonight into early Tue am, when may see patchy fog or low stratus in spots.

For detailed regional Pac NW aviation weather information, go online to: https://weather.gov/zse

KPDX AND APPROACHES . VFR with variable high clouds today into this evening, and still VFR tonight, though will have mix of mid/high clouds. Can not rule out patchy fog in/around PDX 10Z to 16Z Tue. /Rockey

MARINE. A decaying front will brush the area on today which could bring a brief period of increased northwest winds, especially in the northern waters west of 30NM. Mon night into Tue the surface ridge axis builds north of the waters bringing northwest winds to the waters. By midweek the high pressure weakens a the next systems approach the region. Models are in overall agreement with a low around 993 to 1000 mb approaching 130W by Thu morning, then quickly replaced by another low on a similar southwest to northeast track Thu afternoon. The details for the coastal waters are less clear, but it looks like a solid Small Craft Advisory, though gale force winds are possible especially if a coastal jet develops.

Similarly, seas will be impacted by a secondary fresh swell that happens to be the more energetic of the two. Recent models have begun to lower both the primary and secondary swells associated with this system; although wind waves remain elevated. Combined seas are trending to 15 to 18 ft range. /mh -Muessle

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory from 4 PM this afternoon to 8 PM PST Tuesday for coastal waters from Cape Shoalwater WA to Florence OR from 10 to 60 NM.

Small Craft Advisory from 10 PM this evening to 8 PM PST Tuesday for coastal waters from Cape Shoalwater WA to Florence OR out 10 NM.

Small Craft Advisory from 5 PM this afternoon to 10 PM PST this evening for Columbia River Bar.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 19 mi50 min 1019.9 hPa (+0.0)
46243 - Clatsop Spit, OR - 162 28 mi54 min 48°F7 ft
ASTO3 - 9439040 - Astoria, OR 28 mi50 min NNW 1.9 G 1.9 47°F 44°F1018.8 hPa (-0.3)
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi30 min SSW 5.8 G 9.7 48°F
46248 - Astoria Canyon, OR (179) 43 mi54 min 48°F8 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi55 minWSW 610.00 miFair53°F43°F69%1018.7 hPa

Link to 5 minute data for KAST

Wind History from AST (wind in knots)
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Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
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Mon -- 02:15 AM PST     7.31 feet High Tide
Mon -- 06:53 AM PST     Sunrise
Mon -- 08:26 AM PST     Moonset
Mon -- 08:51 AM PST     0.87 feet Low Tide
Mon -- 02:11 PM PST     7.35 feet High Tide
Mon -- 06:02 PM PST     Sunset
Mon -- 09:08 PM PST     0.10 feet Low Tide
Mon -- 09:15 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.86.57.37.16.24.93.421.10.91.63.156.67.37.16.24.83.21.70.60.10.51.9

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
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Mon -- 01:49 AM PST     8.02 feet High Tide
Mon -- 06:53 AM PST     Sunrise
Mon -- 07:49 AM PST     1.16 feet Low Tide
Mon -- 08:26 AM PST     Moonset
Mon -- 01:45 PM PST     8.06 feet High Tide
Mon -- 06:03 PM PST     Sunset
Mon -- 08:06 PM PST     0.13 feet Low Tide
Mon -- 09:15 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.47.787.464.22.61.51.21.83.256.77.887.35.942.10.70.10.51.83.7

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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