Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Depoe Bay, OR

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:33AMSunset 8:46PM Wednesday May 24, 2017 9:54 PM PDT (04:54 UTC) Moonrise 4:16AMMoonset 6:32PM Illumination 0% Phase: New Moon; Moon at 29 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 Cape Shoalwater Wa To Cascade Head Or Out 10 Nm-coastal Waters From Cascade Head To Florence Or Out 10 Nm- 900 Pm Pdt Wed May 24 2017
.small craft advisory for winds in effect until 2 am pdt Thursday...
.small craft advisory for hazardous seas in effect until 5 am pdt Thursday...
Tonight..NW wind 15 to 20 kt with gusts to 25 kt...easing to 10 to 15 kt with gusts to 20 kt after midnight. Wind waves nw 6 ft at 5 seconds. NW swell 7 ft at 10 seconds.
Thu..N wind 5 to 10 kt with gusts to 15 kt...rising to 10 to 15 kt with gusts to 20 kt in the afternoon. Wind waves N 3 ft at 4 seconds. NW swell 8 ft at 10 seconds.
Thu night..N wind 10 to 15 kt with gusts to 20 kt. Wind waves N 3 ft at 5 seconds. NW swell 7 ft at 10 seconds.
Fri..N wind 10 to 15 kt with gusts to 20 kt. Wind waves N 2 ft at 5 seconds. NW swell 6 ft at 9 seconds.
Fri night..N wind 10 to 15 kt with gusts to 20 kt... Easing to to 5 kt after midnight. Wind waves N 2 ft at 5 seconds. NW swell 6 ft at 9 seconds.
Sat..NW wind to 5 kt. Wind waves 1 ft. NW swell 5 ft.
Sat night..NW wind to 5 kt. Wind waves 2 ft. NW swell 5 ft.
Sun..NW wind 5 to 10 kt. Wind waves 2 ft. NW swell 4 ft.
Mon..N wind 10 to 15 kt. Wind waves 3 ft. W swell 2 ft.
PZZ200 900 Pm Pdt Wed May 24 2017
Synopsis for southern washington and northern oregon coast.. High pres over the waters with low pres inland through early next week. Gusty winds continue through early Thursday with fresh swell choppy seas. Winds ease Thursday afternoon through the weekend with slightly longer period waves becoming dominant.

7 Day Forecast for Marine Location Near Depoe Bay, OR
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location: 44.8, -124.19     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 250440
afdpqr
area forecast discussion
national weather service portland or
940 pm pdt Wed may 24 2017

Synopsis An upper level trough will reside over the pacific
northwest through Thursday. There remains a slim threat of late day
thunderstorms Thursday over the higher north oregon and south
washington cascades. High pressure will return Friday for drier,
sunnier, and warmer weather. Warm and dry conditions continue through
the holiday weekend and early next week. There is a slim threat of
late-afternoon and evening thunderstorms over the higher cascades
Sunday through Tuesday. Stronger southwest to west flow aloft
Wednesday pushes the thunderstorm threat east of the cascades.

Short term Tonight through Saturday... A broad upper level trough
moved through the pac NW earlier today and is now over the rockies.

However, a shortwave on the backside of the trough is diving south
through the pac NW and will continue to influence our weather through
thu.

Onshore flow continues tonight, although not nearly as strong as we
experienced yesterday. Satellite imagery shows clouds over most of
the northern half of the cwa, with skies mainly clear over lane
county. The cloud fcst is a bit difficult overnight. Think that the
onshore flow into the cascades will again lead to clouds backbuilding
off the foothills into the northern valley. The fcst models also
suggest that clouds again form along most of the south wa and north
or coast. The southern portions of the fcst area may again stay
relatively cloud free overnight.

Although the main upper low will move east into the northern great
plains thu, the elongated trough axis on the backside of the low will
pinch off and hang back over the pac nw. The GFS shows channeled 500
mb vorticity through the interior valleys of washington and northern
oregon Thu in north flow aloft. Expect there will be quite a bit of
clouds around Thu morning, particularly over the northern half of the
cwa, but the clouds should break out by late morning and provide
everyone with some sunshine. The GFS and NAM hint at some light qpf
thu afternoon, primarily over the S washington cascades and N oregon
cascades, although the lane county cascades have a chance of a shower
as well. The GFS has surface based LI values of -2 to -4 c from
around mt. Hood northward in the afternoon, so left the slight chance
of thunderstorms in the fcst near the cascade crest. GFS indicates
850 mb temps warm about 5-8
deg c thu, which should result in mid to upper 70s inland. Nam
suggests much less low cloud cover Fri morning as the 975 mb flow
veers more N to ne. Believe any morning stratus will be brief, with
850 mb temps warming another 4-5c, for inland highs getting into the
lower to mid 80s.

Models, particularly the NAM and ECMWF show an interesting
development Fri night. The NAM shows a south stratus surge up the
coast beginning Fri evening and continuing into Sat morning. It
appears as though the stratus surge will stop somewhere near ktmk sat
morning. Adjusted the coastal sky grids to account for this trend.

Sat MAX temps look very similar to what is expected fri. Models agree
that the 500 mb ridge axis will be directly over the forecast area
sat afternoon. This provides a stable atmosphere with a mid-level
capping inversion. Pyle weishaar

Long term Saturday night through Wednesday. The models are in
general agreement through about Mon or Mon night, then start to
diverge at the end of the extended period. The ECMWF maintains a
strong 500 mb ridge over the area Sat night and sun, while the gfs
pushes the ridge axis east of the cascades by Sun afternoon.

Above-normal daytime temperatures can be expected inland Sun and
memorial day. The ECMWF hints at a slim threat of convection over
willamette and mckenzie passes Sun afternoon. Will leave this mention
in for now, but believe a mid-level cap will remain in place. Mon may
have a slightly better risk of cascade convection as the mid-level
flow shows a little more south component. The ECMWF would actually
suggest a slight se-s 700 mb flow, which is more favorable for
convection.

Models start to diverge Mon night and tue. The GFS shows a short-wave
disturbance reaching the area late Mon night and tue. This would
bring a deeper marine layer and result in a more stable air mass. The
ecmwf holds the 500 mb trough axis over the area tue, for a continued
slim threat of cascade thunderstorms. For now have shown a threat of
thunderstorms south of mt. Jefferson tue. Big differences in the
operational runs of the GFS and ECMWF wed, with the GFS depicting a
cooler and stable air mass. The ECMWF shows much stronger ridging.

Weishaar

Aviation Widespread stratocumulus over the waters and the
coast from near kast to konp as well as the coastal mountains.

Also residual moisture in the onshore flow maintaining
stratocumulus over the cascades north of mt. Jefferson. Areas
south of ksle are mostly clear. Cloud deck is around 4500-6000
ft. The onshore flow weakens overnight as high pressure builds.

Also subsidence from building 500 mb heights should lower the
cloud deck. So late tonight and Thu morning should see cigs
closer to 2500 ft, and the more pessimistic model (nam) sounding
shows CIGS near 1500 ft. As far as coverage inland, areas near
the lower columbia river look most vulnerable to the MVFR cigs.

The north oregon coast will probably see MVFR CIGS develop
overnight. Where MVFR CIGS develop expect clouds to
lift dissipate around midday thu.

Kpdx and approaches...VFR through around 12z-14z Thu then 70
percent chance of MVFR CIGS around 2500 ft through 18z. Mostly
clear skies thereafter. Mh

Marine Pattern continues with high pressure over the ne
pacific and low pressure inland combining to continue SCA wind
gusts through early Thursday. Will first see winds within 10 nm
of the coast drop below SCA criteria later tonight, and then
across the entire waters Thursday morning. Benign conditions look
to reign Thursday afternoon through this weekend as the pressure
gradient remains relatively week across the waters.

Steep seas continue at 8-10 ft with dominant wave periods around
7 to 9 seconds. Expect seas to back down a bit this morning
before building back up near 10 ft this evening. Extended the sca
for seas as short periods under wind wave driven fresh swell
conditions dominate. Longer period seas will start prevailing
Thursday as the winds ease with little threat of notable winds or
seas
affecting the waters until perhaps early next week. Jbonk

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 8 am pdt Thursday for
waters from CAPE shoalwater wa to florence or from 10 to
60 nm.

Small craft advisory for hazardous seas until 5 am pdt Thursday
for coastal waters from CAPE shoalwater wa to florence or
out 60 nm.

Small craft advisory for winds until 2 am pdt Thursday for
coastal waters from CAPE shoalwater wa to florence or out
10 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46097 13 mi184 min N 14 53°F 1015.7 hPa
SBEO3 - 9435380 - South Beach, OR 14 mi54 min NNW 8.9 G 14 53°F 52°F1015.5 hPa (-0.9)
NWPO3 - Newport, OR 14 mi54 min N 11 G 13 51°F 1015.7 hPa (-0.9)
46050 - STONEWALL BANKS - 20NM West of Newport, OR 19 mi64 min N 16 G 18 54°F8 ft1015.2 hPa (-1.4)

Wind History for South Beach, Yaquina River, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Newport, Newport Municipal Airport, OR17 mi59 minN 75.00 miFog/Mist50°F46°F88%1016.6 hPa

Wind History from ONP (wind in knots)
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1 day agoCalmN7CalmN8N6N8CalmN6N6N6NW14N17
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2 days agoN8CalmCalmN6NE4CalmCalmE3NE3CalmE3N5N7N10NW8N6N12N12N15
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Tide / Current Tables for Depoe Bay, Oregon
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Depoe Bay
Click for Map
Thu -- 05:37 AM PDT     Sunrise
Thu -- 05:58 AM PDT     Moonrise
Thu -- 06:31 AM PDT     -2.17 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 12:58 PM PDT     7.40 feet High Tide
Thu -- 06:24 PM PDT     1.58 feet Low Tide
Thu -- 08:46 PM PDT     Moonset
Thu -- 08:49 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.38.46.541.3-0.8-2-2-0.913.45.56.97.46.95.642.51.71.82.84.66.68.4

Tide / Current Tables for Kernville, Siletz River, Oregon
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Kernville
Click for Map
Thu -- 12:34 AM PDT     6.74 feet High Tide
Thu -- 05:37 AM PDT     Sunrise
Thu -- 05:57 AM PDT     Moonrise
Thu -- 07:55 AM PDT     -1.13 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 01:54 PM PDT     5.20 feet High Tide
Thu -- 07:44 PM PDT     1.10 feet Low Tide
Thu -- 08:46 PM PDT     Moonset
Thu -- 08:49 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.66.76.14.83.31.60.1-0.8-1.1-0.60.72.33.84.95.24.842.91.91.31.11.83.14.7

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Portland, OR (0,6,7,8)
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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 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.