Wednesday, August5, 2020
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Marine Weather and Tides
Springfield, 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 6:04AMSunset 8:32PM Wednesday August 5, 2020 9:56 AM PDT (16:56 UTC) Moonrise 9:03PMMoonset 6:59AM Illumination 97% 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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PZZ255 Expires:202008060000;;964586 Fzus56 Kpqr 050934 Cwfpqr Coastal Waters Forecast National Weather Service Portland Or 234 Am Pdt Wed Aug 5 2020 Coastal Waters From Cape Shoalwater Washington To Florence Oregon And Westward 60 Nm Pzz250-255-060000- Coastal Waters From Cape Shoalwater Wa To Cascade Head Or Out 10 Nm-coastal Waters From Cascade Head To Florence Or Out 10 Nm- 234 Am Pdt Wed Aug 5 2020
Today..N wind 10 to 15 kt, becoming nw 5 to 10 kt with gusts to 15 kt. Wind waves nw 2 ft at 4 seconds. W swell 3 ft at 9 seconds. Patchy fog.
Tonight..W wind to 5 kt, becoming S after midnight. Wind waves sw 1 ft at 4 seconds. W swell 3 ft at 9 seconds. Patchy fog in the evening, then chance of rain after midnight.
Thu..NW wind 5 to 10 kt. Gusts to 15 kt in the morning. Wind waves nw 2 ft at 4 seconds. W swell 4 ft at 9 seconds. Chance of rain in the morning.
Thu night..NW wind 5 to 10 kt. Wind waves nw 1 ft at 4 seconds. NW swell 5 ft at 10 seconds.
Fri..N wind 5 kt, becoming nw 10 to 15 kt in the afternoon. Wind waves nw 1 ft at 4 seconds. NW swell 6 ft at 11 seconds.
Fri night..NW wind 10 to 15 kt with gusts to 20 kt, becoming N 5 to 10 kt after midnight. Wind waves N 2 ft at 4 seconds. NW swell 5 ft at 10 seconds.
Sat..N wind 10 to 15 kt. Wind waves 4 ft. NW swell 6 ft.
Sun..N wind 10 to 15 kt. Wind waves 3 ft. NW swell 7 ft.
PZZ200 234 Am Pdt Wed Aug 5 2020
Synopsis for the southern washington and northern oregon coast.. High pressure over the northeast pacific will weaken later today. A frontal system will move across the waters late tonight into Thursday morning. Another frontal system looks to brush by the northern waters on Friday. High pressure returns late Friday which will bring gusty afternoon and evening northerly wind through the weekend.


7 Day Forecast for Marine Location Near Springfield, OR
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location: 44.05, -122.96     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 051619 AAA AFDPQR

Area Forecast Discussion . UPDATED National Weather Service Portland OR 919 AM PDT Wed Aug 5 2020

Update for morning aviation section.

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 tonight 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. Dry southerly flow aloft today, maintaining clear skies for most areas. The exception is the marine layer stratus, which is well established along the coast, as well inland to north of Portland, and against the lower slopes of the Cascades to east of Salem extending southward throughout the south Willamette Valley down and across the Umpqua Valley. Most of this stratus will breakup and dissipate through 20Z. But, stratus along the coast will break up, but generally will stay in scattered to broken nature.

A front well offshore will be approaching tonight, and will push widespread lower clouds back across the coast tonight, with increasing mid-level clouds over all the area as well. At this time, looks like spotty light rain will spread to the coast after 07Z, with rain increasing and spreading inland later tonight. Overall, will see MVFR on the coast and lower VFR inland for late tonight into Thu am.

KPDX and APPROACHES . Mostly clear today into this evening. Will have bit of MVFR stratus off to the northeast of the airport until 17Z. Increasing mid-level clouds later tonight, with occasional light rain towards 10Z or bit later on Thu. /Rockey

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 to 9 ft later this coming 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
SBEO3 - 9435380 - South Beach, OR 70 mi63 min WSW 2.9 G 5.1 56°F 58°F1017 hPa
NWPO3 - Newport, OR 70 mi57 min NNW 1 G 1.9 55°F
46229 - UMPQUA OFFSHORE, OR (139) 86 mi61 min 57°F4 ft

Wind History for South Beach, Yaquina River, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eugene, Mahlon Sweet Field, OR15 mi63 minS 610.00 miMostly Cloudy63°F55°F78%1016.1 hPa

Link to 5 minute data for KEUG

Wind History from EUG (wind in knots)
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N12NE10NE10N10NW9CalmCalmSW6SW5SW3SW5SW5SW5S4S6S4W5S6
1 day agoNW4CalmN7N7N7N9
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NE7N8N13N10NW7CalmNE3CalmN3CalmCalmCalmCalmCalmCalmCalmN4
2 days agoS44S5W8SW6SW94SW13W14W11W8SW8W9SW5SW7SW6SW5CalmCalmCalmCalmCalmS4Calm

Tide / Current Tables for Florence, Siuslaw River, Oregon
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Florence
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Wed -- 02:10 AM PDT     6.81 feet High Tide
Wed -- 06:09 AM PDT     Sunrise
Wed -- 08:04 AM PDT     Moonset
Wed -- 09:11 AM PDT     -0.48 feet Low Tide
Wed -- 03:38 PM PDT     5.78 feet High Tide
Wed -- 08:33 PM PDT     Sunset
Wed -- 09:12 PM PDT     2.06 feet Low Tide
Wed -- 10:07 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.26.36.86.65.74.32.71.20-0.5-0.20.72.13.64.95.75.75.24.33.32.52.12.33

Tide / Current Tables for Entrance, Siuslaw River, Oregon
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Entrance
Click for Map
Wed -- 01:20 AM PDT     7.59 feet High Tide
Wed -- 06:09 AM PDT     Sunrise
Wed -- 08:04 AM PDT     Moonset
Wed -- 08:16 AM PDT     -0.58 feet Low Tide
Wed -- 02:48 PM PDT     6.45 feet High Tide
Wed -- 08:17 PM PDT     2.48 feet Low Tide
Wed -- 08:34 PM PDT     Sunset
Wed -- 10:07 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.97.57.46.553.21.40.1-0.5-0.40.62.13.85.36.26.4653.932.52.73.44.6

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Portland, OR (12,3,4,5)
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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.