Monday, March30, 2020
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Marine Weather and Tides
Dallas, 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.

Sunrise 6:53AMSunset 7:39PM Monday March 30, 2020 6:18 AM PDT (13:18 UTC) Moonrise 9:23AMMoonset 12:09AM Illumination 39% Phase: Waxing Crescent; Moon at 6 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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PZZ255 Coastal Waters From Cascade Head To Florence Or Out 10 Nm- Waters From Cascade Head To Florence Or From 10 To 60 Nm- 445 Am Pdt Mon Mar 30 2020
.small craft advisory in effect through late Tuesday night...
Rest of today..SW wind 20 to 25 kt with gusts to 30 kt. Wind waves sw 5 ft at 7 seconds. W swell 9 ft at 10 seconds. Chance of showers.
Tonight..W wind 15 to 20 kt with gusts to 25 kt. Wind waves W 4 ft at 6 seconds. NW swell 10 ft at 10 seconds. Showers.
Tue..W wind 15 to 20 kt with gusts to 25 kt, easing to 10 to 15 kt with gusts to 20 kt in the afternoon. Wind waves W 4 ft at 5 seconds. NW swell 11 ft at 12 seconds. Chance of showers.
Tue night..W wind 10 to 15 kt with gusts to 20 kt. Wind waves W 3 ft at 5 seconds. NW swell 10 ft at 12 seconds. Chance of showers.
Wed..NW wind 10 to 15 kt. Gusts to 20 kt in the morning. Wind waves nw 3 ft at 4 seconds. NW swell 8 ft at 11 seconds. Chance of showers.
Wed night..NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Wind waves nw 2 ft at 4 seconds. NW swell 7 ft at 10 seconds.
Thu..N wind 5 to 10 kt. Wind waves 1 ft. NW swell 5 ft.
Fri..SW wind 5 to 10 kt. Wind waves 2 ft. NW swell 5 ft.
PZZ200 445 Am Pdt Mon Mar 30 2020
Synopsis for the southern washington and northern oregon coast.. A strong cold front continues pushing inland this morning. A trailing westerly swell arrives late Monday afternoon keeping seas elevated through Tuesday. Somewhat benign conditions possible beginning Wednesday.


7 Day Forecast for Marine Location Near Dallas, OR
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location: 44.99, -123.35     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 301033 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 333 AM PDT Mon Mar 29 2020

SYNOPSIS. Another strong cold front will move inland across the region Monday morning which after a period of rain this morning will bring a cool and showery air mass lasting over the next few days. By Thursday showers are expected to decrease considerably with a bit milder temperatures, but a chance for rain returns at the end of the week as another trough of low pressure aloft drops down from the northwest.

SHORT TERM. Today through Wednesday . for the second day in a row, a cold front was approaching the coast early this morning. This front was a bit stronger however, with surface pressure gradients along the Oregon coastline likely to peak around 15 mb this morning, and already pushing gusts at some of the windiest locations to 60 kt. Coastal winds will peak as the front moves inland early this morning. Radar showed rain and Cascade snow had spread in ahead of the front across most of the area, and will continue through the morning until the front pushes through. Models generally showing the front crossing the Cascades by midday, with precipitation turning showery in the afternoon as cooler air aloft begins to push down into the northern part of the region. The main upper trough and coolest air aloft remains to the northwest of the forecast area today, but some models, Nam especially,suggests deep enough instability across the far north part of the forecast area to keep a slight chance of thunderstorms and small hail in the forecast this afternoon. Snow with the front, followed by orographically aided showers behind the front in a westerly flow peaking at 25 to 35 kt at 850 mb will combine to bring a sustained period of snowfall in the Cascades through tonight, so will keep the advisory for snow going there.

A weakened low level onshore flow continues Tuesday and Wednesday under a cyclonic flow aloft, which will help to sustain chances for showers each day. Model soundings broadly suggest that unstable layer would be deep enough to support a slight chance for thunderstorms each afternoon as the coolest air aloft moves across with the upper trough.

LONG TERM. Wednesday night through Saturday . Showers likely to drop off quickly Wednesday night into Thursday as the main upper trough axis is expected to move east, leaving the region with shortwave ridging aloft and a stabilizing air mass. The break is temporary though as models generally show a weak north Pacific cutoff low phasing with another shortwave dropping south out of the Yukon at the end of the week. There are some notable differences in the look, location and timing of this wave, but the general consensus in the models is that this wave will push in to the west coast around Friday, returning a better chance for rain to the region. Another shortwave appears poised to drop south into the region over the weekend.

AVIATION. Cold front, currently located just onshore, will continue moving across the region this morning. Expect MVFR cigs to continue at the coast this morning trending toward VFR by afternoon. Should see a few hours of MVFR cigs 015-025 inland this morning as the front crosses the region but otherwise VFR today. Southerly wind gusts 25 to 30 kt with the front will ease to around 20 kt for the rest of the day. Showers prevail today with thunderstorms possible north of rough KTMK- KCZK line. Deeper convection should ease by 31/03Z. Am seeing mixed message regarding potential MVFR Cigs tonight after the convection ends. Will plan on including MVFR Cigs 020-025 for most areas to continue through much of the remaining period.

PDX AND APPROACHES . Main initial impact will be southerly wind gusts 25-30 kt as a cold front approaches the field. Front appears it will clear the operations area by 15Z. Also expect MVFR cigs 017-023. Embedded moderate rain showers may lower vsbys as well through 15Z. Then expect cigs to lift to 035-045 with continued showers through 31/03Z. Thunderstorms will also be possible over the approaches and at the field through 31/03Z. The greatest threat will be to flights operating north of the Columbia River. After 31/03Z, it appears likely that MVFR cigs around 015 will set up in the area and remain through the night. /JBonk

MARINE. Gales should just about be exiting the waters and onshore at this hour. Will leave the Gale Warning in place through 5 AM to capture any lingering convective gusts above 34 kt. Have issued a SCA for the following 48 hours as frequent wind gusts and seas will likely exceed 21 kts and 10 ft respectively. COnditions becoming more uncertain from Wednesday and thereafter. High pressure still appears to build over the northeastern Pacific, however the axis is drifting further west. This opens up potential for a low pressure system to drop south along the BC coast Wednesday. Models are conspicuously showing a developing low undercut the ridge and approach from the west on Friday. This may clip our waters, but appears to just stay south at this time. /JBonk

PQR WATCHES/WARNINGS/ADVISORIES. OR . Winter Weather Advisory until 11 AM PDT Tuesday for Cascades in Lane County-Northern Oregon Cascades.

WA . Winter Weather Advisory until 11 AM PDT Tuesday for South Washington Cascades.

PZ . Small Craft Advisory until 5 AM PDT Wednesday for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Gale Warning until 5 AM PDT early this morning for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory from 7 AM this morning to noon PDT today for Columbia River Bar.

Small Craft Advisory from 8 PM this evening to 1 AM PDT Tuesday for Columbia River Bar.

Interact with us via social media: www.facebook.com/NWSPortland www.twitter.com/NWSPortland

This discussion is for Northwest oregon and Southwest Washington from the Cascade crest to 60 nm offshore. This area is commonly referred to as the forecast area.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBEO3 - 9435380 - South Beach, OR 45 mi49 min W 15 G 18 47°F 50°F1010.9 hPa
NWPO3 - Newport, OR 46 mi19 min SW 16 G 19 47°F
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 49 mi49 min 49°F1009.4 hPa

Wind History for South Beach, Yaquina River, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
McMinnville, McMinnville Municipal Airport, OR18 mi26 minSW 910.00 miOvercast45°F42°F90%1009 hPa
Salem - McNary Field, OR18 mi23 minSSW 9 G 1710.00 miLight Rain48°F44°F86%1009.4 hPa

Link to 5 minute data for KSLE

Wind History from SLE (wind in knots)
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2 days agoS9S9S10S12S9S12S10S12S10S9S9S6S6S6S6S5S7S6S6S7S6S8S5S6

Tide / Current Tables for Nestucca Bay entrance, Oregon
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Nestucca Bay entrance
Click for Map
Mon -- 01:12 AM PDT     Moonset
Mon -- 04:23 AM PDT     6.83 feet High Tide
Mon -- 06:58 AM PDT     Sunrise
Mon -- 10:24 AM PDT     Moonrise
Mon -- 11:53 AM PDT     0.55 feet Low Tide
Mon -- 06:20 PM PDT     5.01 feet High Tide
Mon -- 07:41 PM PDT     Sunset
Mon -- 11:17 PM PDT     2.99 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.24.15.26.26.86.76.25.13.92.61.50.80.60.91.72.83.94.654.94.53.93.33

Tide / Current Tables for Kernville, Siletz River, Oregon
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Kernville
Click for Map
Mon -- 01:11 AM PDT     Moonset
Mon -- 04:52 AM PDT     5.34 feet High Tide
Mon -- 06:59 AM PDT     Sunrise
Mon -- 10:25 AM PDT     Moonrise
Mon -- 12:34 PM PDT     0.40 feet Low Tide
Mon -- 06:49 PM PDT     3.92 feet High Tide
Mon -- 07:42 PM PDT     Sunset
Mon -- 11:58 PM PDT     2.18 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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22.63.54.45.15.35.14.53.62.61.60.90.50.40.91.72.53.33.83.93.73.22.72.3

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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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.