Saturday, September21, 2019 L-36.com


Marine Weather and Tides
Eugene, OR

Version 3.4
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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 6:57AMSunset 7:13PM Saturday September 21, 2019 4:41 PM PDT (23:41 UTC) Moonrise 10:41PMMoonset 1:23PM Illumination 46% Phase: Third Quarter Moon; Moon at 23 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- 257 Pm Pdt Sat Sep 21 2019
Tonight..N wind 5 to 10 kt, becoming sw after midnight. Wind waves N 1 ft at 4 seconds, shifting to the sw at 4 seconds after midnight. NW swell 5 ft at 12 seconds. Patchy fog after midnight.
Sun..S wind 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves sw 2 ft at 4 seconds. NW swell 6 ft at 11 seconds. Showers and a slight chance of tstms.
Sun night..N wind 10 to 15 kt. Gusts to 20 kt. Wind waves N 2 ft at 4 seconds. W swell 8 ft at 10 seconds. Patchy fog after midnight.
Mon..N wind 5 kt. Wind waves N 1 ft at 4 seconds. W swell 7 ft at 9 seconds. Patchy fog.
Mon night..NW wind 5 kt, backing to S to 5 kt after midnight. Wind waves nw 1 ft at 4 seconds, shifting to the S at 4 seconds after midnight. NW swell 6 ft at 10 seconds. Chance of rain.
Tue..SW wind 5 kt. Wind waves 1 ft. NW swell 7 ft.
Tue night..N wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. NW swell 8 ft.
Wed..N wind 10 to 15 kt. Wind waves 3 ft. NW swell 10 ft.
Thu..NW wind 10 to 15 kt. Wind waves 3 ft. NW swell 9 ft.
PZZ200 257 Pm Pdt Sat Sep 21 2019
Synopsis for the southern washington and northern oregon coast.. Higher pressure will move onshore this evening. A cold front will move east across the coastal waters Sunday. High pressure returns to the waters by Sunday night. Another front moves through Monday night. Active weather continues through next week.


7 Day Forecast for Marine Location Near Eugene, OR
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location: 44.06, -123.17     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 212212
afdpqr
area forecast discussion
national weather service portland or
311 pm pdt Sat sep 21 2019

Synopsis Brief high pressure will bring clearing skies this
afternoon. However, clouds will be on the increase again tonight
ahead of a cold front bringing rain and post-frontal showers
thunderstorms across the forecast area Sunday. Sunday night may be
the coolest night so far this season followed by dry and mild
weather Monday. Additional low pressure systems may bring more wet
weather Tuesday and again later in the week. Temperatures remain a
little cooler than typical for late september with the first hint of
snow across the high cascades appearing possible by next weekend.

Short term Tonight through Tuesday... Marine influenced clouds are
holding strong west of i-5 at this hour while areas east are largely
sunny. Should see some of the western cloud cover dissipate for a
short time as the Sun sets and the atmosphere stabilizes. This looks
like it would allow for some fog to develop across the area, but it
may end up being very patchy at best depending on the arrival of
higher clouds overnight.

Cold front is now located from around 130w offshore vancouver island
to roughly 136w off the or ca coast. The parent upper trough will
deepen a little overnight which is further removing the upper jet
and thus slowing the eastward by a little bit. Thus the front may be
a bit slower the arrive tomorrow morning, but perhaps by only an
hour or two. Additionally, this will also help keep a pw MAX of
around 1.50" from phasing in with the front. When the front does
arrive, precip is taking on a bit of a hybrid structure where some
pockets of the north coast and coast range could pick up closer to
0.50-0.75" by the end of the day while the inland areas may see
closer to 0.50" at best up north and around 0.10" from eugene and
southward. This will, of course, all remain dependent on if and
where thunderstorms may develop behind the front tomorrow afternoon.

Am not terribly excited by the coverage potential as most of the
instability will be chewed up by the front, but cannot completely
rule out stray cells developing for a few hours behind the cold
frontal passage.

Clearing skies Sunday night will set the stage for good radiational
cooling but would like to see the winds drop off further than the
forecasted 5-10 mph. Thus have retained a broad brush patchy fog
coverage but suspect winds will largely block the deeper cooling
potential and also elevate fog into a low stratus layer.

Ridging builds Monday and will be centered will offshore. Morning
clouds will be slower to clear but should bring a fairly pleasant
afternoon with fair weather cumulus lingering. What little high
pressure that is over the area, gets flattened by a shortwave
crossing in to british columbia Monday evening. The weakening cold
front will drag across the area and bring light rain to much of the
northern terrain Tuesday morning. Jbonk

Long term Tuesday night through Saturday... A flat ridge over the
pacific northwest looks to be the dominant feature through
Wednesday. Models currently are in agreement on a deep trough that
will become the dominant feature Thursday through Saturday.

A leading cold front will bring the first round of precipitation
Wednesday night. This will keep temperatures in the low to mid 60s
along the coast and mid to high 60s inland. Thursday a deeper trough
will bring the next round of moisture and cooler temperatures to the
area. Temperatures could dip into the upper 50s along the coast and
lower 60s inland. Models start to diverge the latter part of next
week as a low is expected to develop as it drops southward across
the pacific nw. The models are in agreement that cooler temperatures
along with more precipitation will occur, but are in disagreement as
to the track of the low. The GFS has the low tracking from the NW to
the SE across our cwa, while the ecwmf has the low hugging the wa
and or coast line before moving inland along the northern ca coast.

The path of the low will determine where the heaviest precipitation
will fall. With this in mind have kept pops above climatology
through Saturday.

An important observation with this system is the potential for some
snow at elevations above 4,000 to 5,000 from Thursday though
Saturday. The GFS along with its ensemble members and ecwmf are all
suggesting 850mb temperatures around 0c to 1c (32f to 34f). 42

Aviation Lingering low clouds will continue to scatter this
afternoon, but expect increasing mid and high clouds to start to
move across the forecast area this evening ahead of an incoming
front. This front is expected to bring light rain to the north
coast by early Sunday morning, with rain spreading inland and
south through the morning hours. Rain looks to transition to
showers by Sunday afternoon, with isolated thunderstorms possible
west of the cascades through Sunday evening. Expect conditions in
the interior to beVFR through tonight, with an increasing chance
for MVFR conditions after 12z Sunday. Conditions along the coast
should remain mainlyVFR through this evening, then settle into
the MVFR range overnight, with local ifr possible late tonight.

Brief periods of ifr conditions will be possible Sunday morning
as the front moves across the region. Conditions should become
vfr behind the front Sunday afternoon evening, but heavier
showers could bring some occasional ifr MVFR conditions.

Kpdx and approaches...VFR conditions expected through tonight
with variable mid and high clouds. MVFR CIGS under light rain
likely after 12z Sunday, with brief periods of ifr conditions
possible along the front. Conditions should improve toVFR by
Sunday afternoon under scattered showers, with reduced flight
conditions possible with some of the heavier showers. 64

Marine Transient higher pressure over the waters will continue
to shift inland this evening. A modest front is expected to move
across the waters tonight and ashore Sunday morning, with high
pressure building over the waters Sunday afternoon. Small craft
advisory conditions are expected to develop over the northern
waters ahead of the front, with gusts to 25 kt and seas building
to around 9 to 10 feet. Advisory gusts look to persist over the
northern outer waters as high pressure builds behind the front.

The central outer waters could also see some advisory gusts
behind the front Sunday afternoon evening, but don't think they
are widespread enough to justify issuing another advisory at the
moment. Nonetheless, isolated gusts to 25 kt are possible beyond
20 nm south of cascade head. The next front looks to impact the
waters later Monday, with a brief period of advisory gusts to
25 kt possible over the northern outer waters as the front
brushes by. High pressure rebuilds across the waters Tuesday and
could bring some northerly advisory gusts to the central waters
Tuesday afternoon evening. A stronger front is then expected
Thursday with gusts to 30 kt possible.

Seas are currently around 4 to 6 feet this afternoon, but will
quickly build to around 8 to 10 ft with the front later tonight.

A persistent west to northwesterly swell will generally keep seas
in the 7 to 9 ft range through most of next week, with seas likely
building into the lower teens by Thursday. 64

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory from 3 am to 11 pm pdt Sunday for waters
from CAPE shoalwater wa to cascade head or from 10 to 60
nm.

Small craft advisory from 3 am to 1 pm pdt Sunday for coastal
waters from CAPE shoalwater wa to cascade head or out 10
nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBEO3 - 9435380 - South Beach, OR 61 mi59 min NW 8.9 G 13 64°F 64°F1018.5 hPa
NWPO3 - Newport, OR 61 mi41 min NW 11 G 12 63°F
46229 - UMPQUA OFFSHORE, OR (139) 76 mi41 min 65°F5 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, OR5 mi47 minN 910.00 miA Few Clouds73°F54°F51%1017.9 hPa

Link to 5 minute data for KEUG

Wind History from EUG (wind in knots)
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Last 24hrCalmW3W3W6CalmCalmSE3S3CalmCalmCalmS4SE33S5S4CalmCalmCalmN3NE45N6N9
1 day ago3NW4W3NW4CalmSW4S3W3CalmS4S3S4S3S3S4S3S4S4SW4W5CalmCalmS3Calm
2 days agoS3N5NW3CalmW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3N5NE5NE8NE6

Tide / Current Tables for Florence, Siuslaw River, Oregon
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Florence
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Sat -- 12:36 AM PDT     0.80 feet Low Tide
Sat -- 07:02 AM PDT     Sunrise
Sat -- 07:07 AM PDT     4.59 feet High Tide
Sat -- 12:07 PM PDT     2.78 feet Low Tide
Sat -- 02:27 PM PDT     Moonset
Sat -- 06:09 PM PDT     5.97 feet High Tide
Sat -- 07:15 PM PDT     Sunset
Sat -- 07:43 PM PDT     Last Quarter
Sat -- 11:45 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.81.322.93.84.44.64.443.532.82.93.44.255.765.85.34.43.32.2

Tide / Current Tables for Drift Creek, Alsea River, Oregon
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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.
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Wind Forecast for Portland, OR (19,4,5,8)
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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 numerious 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.