Thursday, May23, 2019 L-36.com


Marine Weather and Tides
Dunes City, OR

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:43AMSunset 8:43PM Thursday May 23, 2019 10:06 AM PDT (17:06 UTC) Moonrise 12:00AMMoonset 8:51AM Illumination 78% Phase: Waning Gibbous; Moon at 19 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ310 Coos bay bar- coastal waters from cape blanco or to pt. St. George ca out 10 nm- waters from cape blanco or to pt. St. George ca from 10 to 60 nm- 134 pm pdt Wed may 29 2013 a long-duration moderate to strong north wind event is expected to last from this weekend into early next week. Winds should begin to increase Friday into Saturday...peaking Sunday with storm force wind gusts possible. Very steep and hazardous waves will accompany this wind event and mariners should prepare for dangerous conditions at sea. The strongest winds and highest seas will occur beyond 5 nm from shore.
PZZ300 837 Am Pdt Thu May 23 2019
Synopsis for the southern oregon coastal waters..Gusty north winds and steep to very steep wind-driven seas will continue through Friday night. Conditions will improve Saturday, then north winds are expected to return Sunday.


7 Day Forecast for Marine Location Near Dunes City, OR
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location: 43.93, -124.11     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 231629 cca
afdpqr
area forecast discussion
weather service portland or
928 am pdt Thu may 23 2019

Updated aviation section
Synopsis A ridge of high pressure off the coast will bring
warmer temperatures today, while low pressure to the east keeps a
chance for showers and thunderstorms, mainly for the cascades. On
Friday an upper level low pressure system will move down the british
columbia coast and over the pacific northwest, bringing cooler
temperatures and renewed chances for showers lasting through the
weekend.

Short term Today through Saturday... The upper low over the
desert southwest early this morning is expected to lift north
through utah today and into wyoming tonight. Cascades remain on the
northwest periphery of the closed low today, leaving the area open
to a chance for showers and thunderstorms. Areas further west
however are likely to remain dry today and tonight as a ridge of
high pressure aloft offshore presses closer to the coast and raises
heights aloft. This also expected to result in warmer temperatures
for much of the area today as 850 mb temperatures climb several
degrees.

Models agree on a shortwave moving south down the british columbia
and washington coast Friday, digging in for a closed low sinking
south over the region Friday night. A surface trough of low pressure
trailing the low to the north, brings enhanced low level onshore
flow to the region Friday. This brings a chance for showers back to
the entire region, but pops will be a bit on the conservative side
generally chance category except over terrain in the north, as
moisture is limited to just the very low elevations. A second low
follows the first one down the coastline on Saturday, maintaining a
showery cool air mass for the area.

Long term Saturday night through Wednesday... No changes.

Previous discussion follows. The models agree on the general trend
throughout the extended. A low will slowly track over the forecast
area through Sunday leaving a wake of shortwaves that will keep
chances of precipitation within the forecast through Monday night.

The euro is leaning more towards the wetter side as its low has a
more organized circulation and stronger frontal formation, this
results in more rain. The forecast however, is leaning more towards
the GFS which still shows precipitation but not as heavy. Both
models show heavier precipitation in the cascades Monday night.

A high pressure moving in from off-shore Tuesday will reduce
precipitation for the rest of the extended. A notable feature will be
the inversions that occur Sunday through Tuesday in the early
morning hours (around 5am); this will increase temperatures above
1500ft by roughly 5 degrees. -bphillips

Aviation A marine stratus surge has brought a mix of MVFR and
ifr conditions to the lowlands of SW washington and NW oregon
this morning. The coast is predominantly ifr currently, while
the interior is predominantly MVFR. Running a local stratus
breakout program with a couple of pireps from earlier this
morning suggests that the interior will see clouds break up
between 19z- 20z, withVFR then expected through the remainder of
the day and this evening. Chances for any significant
improvement at the coast do not look nearly as promising. There
may be a couple of hours ofVFR late this afternoon, but ifr or
low MVFR stratus should push quickly back in by early this
evening. The stratus should return to the interior lowlands
overnight, likely reaching most sites between 08z-12z.

Kpdx and approaches... MVFR stratus to persist through this
morning. Expect breakout toVFR conditions between 19z-20z, with
vfr then continuing through this afternoon and evening. MVFR
stratus will return tonight, likely arriving between 08z-12z. Pyle

Marine Latest buoy obs show winds below 20 kt and they were
marginal earlier even at buoy 89, so have dropped current small
craft advisory for winds. However, it does look like winds will
pick up again out of the northwest behind the current system over
the waters beyond about 15 nm offshore, so added a new small
craft advisory for winds starting 5 pm pdt Thursday.

This northerly wind pattern continues through at the weekend.

It appears winds weaken over the weekend. Meanwhile, seas have
dropped some to 8 to 9 ft at 8 to 10 seconds. Have kept the small
craft advisory for hazardous seas in place as it, but will not
extend as seas will continue to drop a little bit with dominant
wave period remaining around 9 seconds.

Model guidance shows seas exceeding 10 ft again Friday night as
the next low pressure area along the british columbia coast drops
south. Latest spectral guidance has seas peaking around 14 ft in
the northern outer waters. Seas then fall just below 10 ft
Saturday and look to continue falling through Sunday to around 4
to 5 feet. Bowen

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds from 5 pm this afternoon to 5 am
pdt Friday for waters from CAPE shoalwater wa to florence
or from 10 to 60 nm.

Small craft advisory for hazardous seas until 11 am pdt this
morning for coastal waters from CAPE shoalwater wa to
florence or out 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46229 - UMPQUA OFFSHORE, OR (139) 26 mi36 min 54°F8 ft
CHAO3 - 9432780 - Charleston, OR 42 mi90 min N 5.1 G 8 53°F1018.3 hPa
NWPO3 - Newport, OR 47 mi66 min N 12 G 13 53°F

Wind History for Charleston, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Oregon Regional Airport, OR35 mi70 minNNW 910.00 miOvercast54°F53°F97%1018.3 hPa

Wind History from OTH (wind in knots)
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Last 24hrNW10N10NW10NW9NW11NW11N11N11N11NW9NW9N11N8NW7N8N8N9N9N8N10N11N8N9N10
1 day agoW10SW9W13W9W9W9NW7N10N11N12N8N6N9N12--N12N8N9N9N9N10N10N9NW9
2 days agoW8SW17
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Tide / Current Tables for Florence, Siuslaw River, Oregon
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Florence
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Thu -- 12:32 AM PDT     Moonrise
Thu -- 03:56 AM PDT     5.89 feet High Tide
Thu -- 05:42 AM PDT     Sunrise
Thu -- 09:51 AM PDT     Moonset
Thu -- 11:18 AM PDT     -0.47 feet Low Tide
Thu -- 06:10 PM PDT     4.95 feet High Tide
Thu -- 08:44 PM PDT     Sunset
Thu -- 11:21 PM PDT     2.68 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.13.94.95.65.95.64.83.62.310-0.4-0.30.41.52.73.94.64.94.84.33.632.7

Tide / Current Tables for Entrance, Siuslaw River, Oregon
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Entrance
Click for Map
Thu -- 12:32 AM PDT     Moonrise
Thu -- 03:06 AM PDT     6.57 feet High Tide
Thu -- 05:42 AM PDT     Sunrise
Thu -- 09:51 AM PDT     Moonset
Thu -- 10:23 AM PDT     -0.57 feet Low Tide
Thu -- 05:20 PM PDT     5.52 feet High Tide
Thu -- 08:44 PM PDT     Sunset
Thu -- 10:26 PM PDT     3.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.45.46.26.66.35.54.22.71.20.1-0.5-0.40.31.52.94.15.15.55.44.94.33.63.33.3

Weather Map and Satellite Images
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GOES 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 (13,3,4,5)
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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.