Tuesday, December11, 2018 L-36.com

Marine Weather and Tides
Rouses Point, NY

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 7:23AMSunset 4:11PM Tuesday December 11, 2018 1:11 PM EST (18:11 UTC) Moonrise 11:40AMMoonset 9:12PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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 111129
area forecast discussion
national weather service portland or
328 am pst Tue dec 11 2018

Synopsis Today and tonight will be rainy as a warm front moves
across NW oregon this morning, followed by a cold front this evening.

The next warm front stalls over washington Wednesday and Thursday
keeping most of NW oregon dry, but maintaining light steady rain for
sw washington. A cold front will move across the region Friday and
Friday night. Another frontal system is expected for the weekend.

Short term Today through Friday... Light rain ahead of an
approaching warm front is moving into SW washington and NW oregon
early this morning. Snow levels will rapidly rise this morning as the
warm front gets closer to the coast. The astoria profiler shows the
snow level there increased around 1000 feet between midnight and 2
am. Will keep an eye on the snow levels on the troutdale profiler
when the rain reaches there in the next couple of hours to make sure
that the snow levels do indeed rise, and that the forecast reflects
the observed rises. The snow levels should rise to just above the
cascade passes as the rain reaches the cascades this morning, then to
6000-7000 feet late this morning. This rapid rise of the snow levels
will minimize snow impacts for the cascades. The snow levels will be
slightly lower for the south washington cascades this morning, and 1
to 3 inches of snow is possible at elevations near 4000 feet before
the warmest air arrives.

The warm front will move onshore late this morning. Gusty west winds
behind the front will help the rain become more orographic as the
trailing cold front spreads heavier rain into the region this
afternoon and evening. The coast, coast range, and the cascade
foothills will likely measure 1 to 3 inches of rain from this morning
through late tonight, with around 0.75 inch of rain expected for the
interior valleys. Do not foresee any hydrologic concerns, but areas
with poor drainage will likely have some ponding issues. Gusty s-sw
winds can be expected through this evening with gusts up to 45 mph
expected near the beaches and the higher terrain and gusts up to 35
mph for the lower elevations.

Cold air will fill in behind the cold front late tonight and the snow
levels will lower to 3000-3500 feet by sunrise Wednesday morning.

Post-frontal showers will likely result in 2 to 5 inches of snow for
the cascade passes Wednesday morning through early Wednesday
afternoon. Cool unstable air behind the cold front may provide enough
instability to support isolated thunderstorms near the coast late
tonight into early Wednesday morning. A building upper level ridge
will end showers quickly Wednesday afternoon, except for sw
washington where another approaching warm front will likely continue
rain through Thursday.

The upper ridge will keep most of this next front north of the
portland forecast area which is why the rain will be mostly limited
to SW washington Wednesday night and Thursday. Snow levels should be
above the cascade passes and limit snow concerns for the south
washington cascades. The front changes position very little Thursday
and rain chances will be confined to SW washington and the coast. The
warm front lifts north further into washington Thursday night for a
brief break in rain before the cold front arrives Friday morning.

Friday will be another wet day for the region as the cold front
spreads widespread rain across the region. Gusty winds are expected
with this front similar to what we could see with today's front. ~tj

Long term No changes. Previous discussion follows... Friday night
through Monday... The active weather pattern will continue well into
next week with a series of fronts moving across the region. There is
some uncertainty in the timing of frontal systems over the weekend
and into next week. At this point in time it looks like there will be
a relative break between systems early Saturday, then another front
moves through late Saturday night and Sunday. Yet another system
arrives sometime Monday into Tuesday bringing more valley rain and
high elevation snow. Tw tj

Aviation Broad atmospheric lifting, associated with an
approaching warm front, has returned conditions toVFR across
the region at this hour. Will see CIGS lower to MVFR beginning
shortly at the coast and closer to 18z inland. Will see cigs
deteriorate further as the affiliated cold front arrives. Expect
ifr CIGS at the coast around 20z and maybe make it inland,
however, vsbys inland may be more of the limiting factor as rain
rates increase. Additionally, southerly winds will increase today
with gusts 35 to 45 kt at the coast and around 25 kt later this
afternoon. Post-frontal showers will keep conditions in place for
much of the remaining 24 hour period with improvement most
likely to begin somewhere near 12 04z at the coast and 12 07z

Pdx and approaches...VFR CIGS will lower and likely begin to
affect visual approaches by the end of the boxer arrivals. The
bulk of the morning arrivals will likely require extra spacing,
both from sub 040 cigs, but also from increasing southerly winds
aloft. Warm front passes across pdx between 16z and 18z tue,
with flip to southerly winds with CIGS lowering further reaching
020 to 030. Periods of lowering vsbys under increasing rain rates
might bring 2-3 sm, but more likely will remain 3-5 sm through
12 03z as a cold front moves away. Conds appear to improve
further reachingVFR near 12 08z as showers decrease in coverage.


Marine Minor changes as models remain in decent agreement.

Generally, will see gusts in 30 to 40 kt range as a cold front
approaches today. Frequent post frontal wind gusts appear to
remain above gale criteria of 34 kt through a large part of
Wednesday so have extended the gale warning through then.

Exception looks to be the central inner waters, but even then,
convective gusts may prove too frequent there as well. Models
continue to show a strengthening 972 mb surface low moving
northeast, but well northwest of the waters on Thursday. It does,
however, bring a cold front with stronger gales and possible
storm force gusts across the waters on Friday. No long term
break in sight as additional systems line up across the pacific
well into next week.

Seas build reaching 14 to 17 ft tonight through Wed night.

Thereafter, details still need to be sorted out, but the overall
message is frequent and mixed swells will arrive to the waters
through early next week. The strong low on Thursday night Friday
seems to be a more potent swell generator with combined seas
around 25 feet very plausible. Another round is possible later in
the weekend and could bring seas a little higher. Finally, some
models are bringing the strongest storm and highest seas
approaching 30 feet this time next week. Again, fully expect
details to change between now and then, but do want to portray
the overall message of poor conditions for the next several days.


Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Gale warning until 4 am pst Wednesday for coastal waters from
cape shoalwater wa to cascade head or out 60 nm.Waters
from cascade head to florence or from 10 to 60 nm.

Gale warning until 4 pm pst this afternoon for coastal waters
from cascade head to florence or out 10 nm.

Small craft advisory for rough columbia river bar until 1 pm
pst Wednesday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 80 mi42 min 45°F1014.8 hPa

Wind History for Longview, WA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

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

Tide / Current Tables for Ellsworth, Washington - IGNORE HEIGHTS
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Portland, OR (13,3,4,5)
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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 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.