Sunday, November18, 2018 L-36.com


Marine Weather and Tides
Hood River, 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 7:12AMSunset 4:37PM Sunday November 18, 2018 8:43 AM PST (16:43 UTC) Moonrise 2:47PMMoonset 1:50AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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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7 Day Forecast for Marine Location Near Hood River, OR
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location: 45.71, -121.53     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 181425 cca
afdpqr
area forecast discussion... Correction
national weather service portland or
615 am pst Sun nov 18 2018
corrected typo

Synopsis Dry weather with mild days and cool nights will continue
through Tuesday as high pressure east of the cascades brings offshore
flow. A return to a wet pattern will begin Wednesday as frontal
systems move into the region from the pacific. This pattern will
bring valley rain and mountain snow to the area for the thanksgiving
weekend. Snow levels will be near pass levels Thursday though
Saturday.

Short term Today through Tuesday... Dry, offshore flow will
continue through Tuesday as a strong ridge of high pressure slowly
moves across the region. The persistent surface high pressure over
the columbia basin will continue to maintain a fairly strong offshore
flow, with pdx-dls pressure gradient on the order of -8mb, which is
a bit weaker than the gradient we had with the east wind event last
week.

The dry offshore flow will tend to limit fog potential the next
few nights and mornings despite having clear skies and light winds
(away from the gorge). The easterly flow will cause stratus to pile
up on the east side of the cascades and move into the hood river
valley the next couple days. Overall, quite pleasant weather for
november. Tw

Long term No changes. Previous discussion follows... Tuesday night
through Saturday... The upper level ridge is expected to continue to
shift east Tue night and Wed as a weak weather system approaches
the coast. In general, models suggest some splitting of the system
as it slowly approaches, but relatively deep moisture for increasing
pops on wed. Similar to a system last week, cannot rule out a low
probability of some light freezing rain in and around the hood river
valley Wed morning as moisture begins to overrun the cooler low
level air trapped under the inversion. A considerably stronger
system potentially arrives Thu or Thu night. Timing and strength of
the system are called into question however as models begin to show
increasing variance in solutions. All models look promising for
rain Thu or Thu night, with the possibility for strong winds along
the coast when the cold front arrives. After post frontal showers
thu night and fri, models diverge sharply in key features Sat with
the ec at one extreme showing a ridge returning to the coast, and
gfs at the other with a deep trough approaching the coast. A good
case for blending model pops with some climatology.

Aviation Dry and breezy easterly winds will continue to keep
most of our area under clear skies andVFR conditions in place
today through tonight. Still watching eug for the potential for
some fog or low stratus this morning, which is the only location
of concern. Satellite shows some fog or low stratus creeping
northward into the south willamette valley, which may lower cigs
and or vis to lifr over the next couple hours. Models have not
been showing this, so confidence isn't high on the exact timing
this will clear, but appears likely once northerly winds kick
back in, conditions should clear withVFR conditions returning
by 18z today. Once fog or low stratus clears, expectVFR
conditions through the rest of today and tonight at eug. Farther
north, near the west end of the columbia river gorge, east winds
will continue to gust up to 35 to 45 kt today.

Pdx and approaches...VFR conditions through at least the next 24
hours. East winds weaker today, but may occasionally see gusts
up to 20 kt after 18z through this afternoon. -mccoy

Marine Winds are gradually dropping over our northern waters,
and are on track to drop below 20 kt by 12z. Winds will continue
to gradually diminish through the day today. Weather remains
fairly benign through the first half of this week as large-scale
high pressure remains over our waters. This pattern starts to
really change late Tuesday into Wednesday, as the first system
moves through in a much more active weather pattern setting up
for later next week. Models predict this first system will bring
high-end small craft winds, with gusts mostly up to 30 kt, but a
few gusts up to 35 kt appear possible. Seas will build up with
this system, rising to around 9 to 10 feet. This system will be
the primer, setting us up for a stronger system later next week.

Both the GFS and the ecmwf, our two longer range forecast models,
are predicting a 970-975 mb low center near vancouver island by
00z Friday. This is fairly good agreement for this far out in the
forecast period, increasing confidence. Still, there will
probably continue to be refinement in the exact track of this
low, which will impact wind forecasts up until the day of the
event. With the track and intensity of this low, solid gales seem
likely, with storm-force gusts not out of the question. Seas with
this system again will greatly depend on the track of this low.

Have put 15 to 18 ft seas in the forecast for Thursday night into
early Friday during the period of strongest winds as the front
moves onshore. This may end up being too low, but playing it a
little conservative right now. If we end up with storm-force
winds, and a slightly more southern track of this low, we could
easily see seas jump up into the 20 to 25 ft range during this
period.

Conditions settle back down later on Friday into Saturday, but
models really start to diverge going into next weekend. -mccoy

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 4 am pst early this
morning for coastal waters from CAPE shoalwater wa to
cascade head or out 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 80 mi44 min 51°F1022.7 hPa (+0.3)

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Dalles Municipal Airport, WA21 mi51 minN 010.00 miPartly Cloudy27°F23°F85%1028.8 hPa

Wind History from CZK (wind in knots)
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Last 24hr24------------------------SW12
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1 day ago53------------------------322SW632SE2E21S2
2 days ago----------------------------1214334434

Tide / Current Tables for Vancouver, Columbia River, Washington (dubious accuracy)
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Vancouver
Click for Map
Sun -- 01:54 AM PST     Moonset
Sun -- 02:33 AM PST     1.38 feet High Tide
Sun -- 06:12 AM PST     0.81 feet Low Tide
Sun -- 07:14 AM PST     Sunrise
Sun -- 07:31 AM PST     0.85 feet High Tide
Sun -- 10:56 AM PST     0.28 feet Low Tide
Sun -- 02:51 PM PST     Moonrise
Sun -- 03:20 PM PST     1.59 feet High Tide
Sun -- 04:36 PM PST     Sunset
Sun -- 11:33 PM PST     0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.71.11.31.41.20.90.80.80.80.70.40.30.50.91.31.61.51.41.21.11.110.60.3

Tide / Current Tables for
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Weather Map and Satellite Images
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wmap_P
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 (11,2,3,4)
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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.