Wednesday, September20, 2017 L-36.com


Marine Weather and Tides
Packwood, WA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:46AMSunset 7:03PM Wednesday September 20, 2017 12:39 AM PDT (07:39 UTC) Moonrise 6:13AMMoonset 6:43PM 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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PZZ135 Puget Sound And Hood Canal- 900 Pm Pdt Tue Sep 19 2017
Tonight..N wind to 10 kt except sw wind to 10 kt south of seattle. Wind waves 1 ft. Showers in the evening then a chance of showers after midnight.
Wed..Light wind becoming nw to 10 kt in the afternoon. Wind waves 1 ft or less. A chance of showers.
Wed night..S wind to 10 kt. Wind waves 1 ft or less. A slight chance of showers.
Thu..S wind to 10 kt. Wind waves 1 ft or less.
Thu night..N wind to 10 kt. Wind waves 1 ft or less.
Fri through Sun..Light wind.
PZZ100 900 Pm Pdt Tue Sep 19 2017
Synopsis for the northern and central washington coastal and inland waters..A trough over the inland waters this evening will move east of the area overnight. Another trough will move into oregon on Wednesday. High pressure will build Friday and Saturday.

7 Day Forecast for Marine Location Near Packwood, WA
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location: 46.39, -121.57     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 200421
afdpqr
area forecast discussion
national weather service portland or
919 pm pdt Tue sep 19 2017

Synopsis Cool and unstable onshore flow maintains plenty of
showers and a few thunderstorms today, with some light snowfall in
the high cascades. Another low will another round of more steady rain
and some additional high cascade snow tonight into Wednesday, with
possibly a few in the northern interior. The primary upper trough
will linger over washington and oregon Thursday then slowly move east
by the weekend, with showers slowly decreasing. High pressure builds
in over the weekend and continues into early next week for some great
late september weather in store for the region, with cool nights with
patchy fog but mild sunny days.

Short term Tonight through Friday... Widespread showers and a few
lingering thunderstorms continue across much of the forecast area
this evening. The convective environment today was sufficient to
produce a few strong thunderstorms and two more noteworthy features:
a funnel cloud near molalla, or and a brief ef-0 tornado near lacomb,
or, the latter of which was confirmed by a storm survey team from the
office this evening. The leading edge of the more stratiform-like
precipitation is beginning to push into the southwestern corner of
the forecast area. This will bring steadier, and perhaps at times
heavy, rain as it pushes across the region.

Snow levels will rise to around 5500 feet this evening and early
tonight ahead of the approaching front, but some slight snow showers
may continue in the highest cascade elevations for a little new
accumulation. Models continue to converge in rather good agreement
with the upper level trough sweeping across the region late tonight
through early Wednesday with a phasing shortwave bringing the
potential for some rather heavy rainfall to much of the area.

Rainfall rates may be sufficient to create some localized impacts,
especially in and near burn scars in the columbia river gorge and the
cascades.

The remainder of Wednesday will see more showers spreading over the
area in onshore flow. Forecast models continue to indicate the
potential for some instability to produce some thunderstorms across
the region again tomorrow. SPC sseo indicates the potential across
much of the forecast area, so have continued to maintain a chance
mention of thunderstorms area-wide.

For Thursday and Friday, the upper trough shifts inland and east of
the cascades, bringing northerly flow aloft back in to the region.

There is the possibility of some showers - mostly across the eastern
zones - in the return flow around the upper low. However, expect that
Friday will be largely dry as the upper ridge over the eastern
pacific begins to move closer. Afternoon high temperatures will
gradually trend warmer for the end of the week but still remain near
or below seasonal normals. Cullen

Long term Friday night through Tuesday... Expect snow levels to
continue to rise as during the weekend and into early next week. With
ridging building over the area and lots of lingering low-level
moisture, expect morning fog Sunday morning. Weak offshore winds
will probably keep the coast mostly clear. However, temperatures
will also start warming back up near normal over the weekend and
into the start of next week. -bishop

Aviation Expect coverage of MVFR conditions, locally down to ifr
conditions, to increase overnight as a warm front approaches the
coast and spreads rain inland. Rain continues through the morning,
then changes back over to showers in the afternoon. Still mostly
MVFR conditions Wed afternoon, but with areas improving toVFR after
18z.

Kpdx and approaches...VFR conditions deteriorating to MVFR after 07z
to 11z. MVFR prevails wed, but there is a chance for returning
toVFR conditions after 18z.

Marine Winds will pick up late tonight and early Wed as a
weak low pressure system moves across the northern part of the
coastal waters, and moves inland Wed morning near the mouth of the
columbia. This will bring wind gusts up to around 25 kt Wed morning,
before dropping off again in the afternoon. Another weak low tracks
down off the washington coast Wed night and thu, but winds appear
likely to remain below small craft criteria.

Swell of 12 to 14 ft Tue evening is expected to subside overnight to
a little under 10 ft wed. Seas then expected to remain in the range
of 7 to 9 ft through the rest of the week.

A quieter weather pattern expected over the weekend with winds and
seas remaining below small craft criteria.

Pqr watches warnings advisories
Or... Flash flood watch through Wednesday morning for cascades in
lane county-central columbia river gorge-northern oregon
cascades-western columbia river gorge.

Wa... None.

Pz... Small craft advisory for winds from 5 am to 2 pm pdt Wednesday
for coastal waters from CAPE shoalwater wa to cascade head
or out 10 nm-coastal waters from cascade head to florence
or out 10 nm-waters from CAPE shoalwater wa to cascade
head or from 10 to 60 nm-waters from cascade head to
florence or from 10 to 60 nm.

Small craft advisory for hazardous seas until 3 am pdt
Wednesday for coastal waters from CAPE shoalwater wa to
cascade head or out 10 nm-coastal waters from cascade head
to florence or out 10 nm-waters from CAPE shoalwater wa to
cascade head or from 10 to 60 nm-waters from cascade head
to florence or from 10 to 60 nm.

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

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 75 mi57 min 55°F1006.5 hPa
TCMW1 - 9446482 - Tacoma Met, WA 76 mi51 min ESE 2.9 G 4.1
LOPW1 - 9440422 - Longview, WA 76 mi51 min 66°F1006.7 hPa

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from CZK (wind in knots)
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Last 24hr24------------------------SW12
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SW6W6----SW65SW5
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1 day ago53------------------------322SW632SE2E21S2
2 days ago----------------------------1214334434

Tide / Current Tables for Kalama, Washington - IGNORE HEIGHTS
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Kalama
Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the

Wed -- 12:51 AM PDT     0.39 feet Low Tide
Wed -- 04:47 AM PDT     8.36 feet High Tide
Wed -- 06:56 AM PDT     Sunrise
Wed -- 07:18 AM PDT     Moonrise
Wed -- 01:14 PM PDT     -0.45 feet Low Tide
Wed -- 05:22 PM PDT     8.41 feet High Tide
Wed -- 07:12 PM PDT     Sunset
Wed -- 07:48 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.4257.68.37.96.95.53.92.41.10.1-0.40.336.28.28.37.66.44.93.42

Tide / Current Tables for Saint Helens, Columbia River, Oregon
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Saint Helens
Click for Map
Wed -- 12:24 AM PDT     -0.64 feet Low Tide
Wed -- 05:06 AM PDT     2.09 feet High Tide
Wed -- 06:56 AM PDT     Sunrise
Wed -- 07:18 AM PDT     Moonrise
Wed -- 12:53 PM PDT     -1.06 feet Low Tide
Wed -- 05:42 PM PDT     2.24 feet High Tide
Wed -- 07:12 PM PDT     Sunset
Wed -- 07:48 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-0.50.111.82.11.91.61.20.70.2-0.3-0.8-1.1-0.60.31.42.12.21.91.51.10.60.2

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 (3,6,7,8)
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Ground Weather Radar Station Portland, OR
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weather_mapweather_map weather_map

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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.