Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Chinook, 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 7:27AMSunset 4:35PM Tuesday November 21, 2017 2:18 AM PST (10:18 UTC) Moonrise 10:05AMMoonset 7:23PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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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PZZ210 Columbia River Bar- 849 Pm Pst Mon Nov 20 2017
.small craft advisory for rough columbia river bar in effect from Tuesday afternoon through Tuesday evening...
In the main channel..Combined seas around 7 ft, but building to around 10 ft Tue afternoon. However, seas will temporarily build to near 9 ft during the ebb around 615 am Tue. Seas to 10 ft, with breakers likely, can be expected during the ebb around 615 pm Tuesday evening.
PZZ200 849 Pm Pst Mon Nov 20 2017
Synopsis for southern washington and northern oregon coast.. A frontal boundary over the south oregon waters will lift north overnight through Tuesday morning. Expect gale force wind over the outer waters overnight and then into the inner waters by late Tuesday morning. Additional weather systems move through the waters Wednesday and Thursday for possible gales.

7 Day Forecast for Marine Location Near Chinook, WA
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location: 46.27, -123.95     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 210455
afdpqr
area forecast discussion
national weather service portland or
855 pm pst Mon nov 20 2017

Synopsis Wet and unsettled weather will continue this week. A
warm front will lift north tonight and Tuesday with more rain and
some windy conditions near the coast. A weak cold front then drops
south across the forecast area Tuesday night and Wednesday for more
rain. Another cold front sweeps south on thanksgiving with snow
levels cascade snow levels approaching the passes Friday. Lingering
showers Friday before the next system arrives on the weekend.

Short term Tonight through Thursday... Main item of interest for
the shift was tracking the grays river in SW washington. It fell
below flood stage earlier this evening and was able to cancel the
warning. The frontal boundary drifted south enough such that there
was a few hour break in the precipitation across most of the area.

It, however, has begun drifting back north under the building ridge
with rain (and snow levels above 9000 feet) returning to the roughly
salem and southward. Amounts have been rather light over the last
couple hours but do expect rates to progressively increase as the
primary moisture stream is pushed north along with the subtropical
jet. Most areas will see another round of moderate and occasionally
heavy rain over the course of later tonight and tomorrow. Am
concerned the rain rates across the grays river headwaters may
become heavy enough to push the river back over flood tomorrow
evening, but QPF updates made earlier this evening only brought it
slightly above bankfull during the 4-10 pm block tomorrow evening.

Additionally, many areas have already reached forecasted low
temperatures for tonight, likely a result of the previous cold front
sagging just a bit further south and allowing clouds to greatly
thin. Did lower the forecast a few degrees or so closer to the
observed dew points, but don't expect much more cooling than that as
the warmer air mass lifts northward tonight.

Updated forecast will be available shortly. Jbonk
remainder of the previous discussion follows: the frontal boundary
continues to be forecast to lift back to the north tonight and
Tuesday as a significant warm front. This warm front will have a
good dose of rain with it, maintain the high snow levels in the
cascades, increase east winds through the columbia river gorge, and
increase south to southeast winds along the coast.

This is not a great pattern to get strong winds inland, though it
could get pretty windy near the beaches and headlands during the day
on Tuesday behind or south of the warm front. High winds are marginal
but possible. Looking at the vertical structure and magnitude of the
winds suggests that the best chance of seeing significant winds along
the coast will be 18z tue-00z wed.

While the warm front will tend to hang around near or just to our
north Tuesday night and Wednesday, a trailing cold frontal boundary
will then hang around the area Tuesday night and Wednesday for some
rain continuing. The models indicate that the amounts will be
heaviest over the northern mountains on Tuesday night, otherwise the
amounts will tend to be less than last night and those expected
through Tuesday. Snow levels will remain high.

The next cold front will approach the coast later Wednesday night and
move through southwest washington and northwest oregon on
thanksgiving, pushing this whole mild moist air mass eastward in the
afternoon. Look for the precipitation to turn to showers from the
west Thursday afternoon with a dip in the snow levels Thursday
afternoon and evening, though snow levels will probably stay above
the passes thanksgiving.

Total rainfall amounts through Thursday could reach 4-6 inches at the
coast and the mountains (heaviest north) and 0.67-1.50 in the
valleys. The grays river at rosburg did reach flood stage early this
morning and has crested and will need to be watched this week, but no
other rivers are expected to reach flood stage. In general, the
rainfall through the next few days is not expected to cause flooding
other than some possible localized urban flooding should leaves clog
storm drains, though area rivers and streams will likely continue to
see some sharp rises at times this week. Tolleson

Long term Thursday night through Monday... We will be transitioning
to showers by Thursday night, which will be diminishing Friday. The
models keep speeding up the next system, which may arrive by
Saturday, and then may linger into Sunday. The next system is
expected Monday. After a brief drop in snow levels Friday mainly in
the north part of the forecast area, snow levels rise gain
significantly Saturday before dropping a bit again Sunday. May get a
brief rise in snow levels again Sunday night into early Monday at the
leading edge of the next system. Overall, the unsettled weather
pattern continues. Bishop tolleson

Aviation Vfr across much of the area as of 04z. Some isolated
pockets of ifr to lifr have developed in the interior valleys,
but expect this to be short-lived as clouds thicken and
offshore low-level flow develops. Stalled frontal boundary across
southern oregon this evening will work its way north overnight
and Tue morning as a warm front. This will result in mainly ifr
to MVFR conditions across the area. These conditions will
persist through at least Tuesday afternoon.

Kpdx and approaches...VFR conditions at the terminal but lifr at
kttd as of 04z. At 04z the kttd-kdls gradient was -0.1 mb and
this will get stronger overnight. Thus, do not expect lifr
conditions to last very long at kttd. Rain returns around 09z
overnight, bringing CIGS and or vis down to predominantly MVFR,
continuing through much of Tuesday. Weishaar
-mccoy

Marine Have made some adjustments to the current forecast. Had
to re-issue a small craft advisory for hazardous seas earlier
this evening as wave heights were still close to 10 ft and
periods were 9 to 10 seconds. Enp guidance appeared to lower seas
a little too fast. 00z model guidance in reasonable agreement
showing gale force wind gusts returning to pzz275 overnight and
spreading to pzz270 by 12z. Will maintain the small craft
advisories for wind valid in pzz250 and pzz255, but then convert
those to gale warnings starting 18z Tue for pzz250 and 20z for
pzz255. Small craft advisories for hazardous seas have also been
issued for those zones beginning at 08z for pzz255 and 11z for
pzz250 and valid until the gale warning start time.

Seas are expected to build into the mid to upper teens by tue
afternoon or early evening and peaking by 08z wed. The forecast
area will remain in an unsettled pattern Wed and Thu with a
series of systems moving south to north over the offshore waters.

These will give the potential for renewed gales beyond 10 nm
from the coast and keep seas into the lower to mid teens.

Weishaar

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Gale warning from 4 am Tuesday to 3 am pst Wednesday for waters
from CAPE shoalwater wa to cascade head or from 10 to 60
nm.

Small craft advisory for winds from 2 am to 10 am pst Tuesday
for coastal waters from CAPE shoalwater wa to cascade head
or out 10 nm.

Gale warning from 10 am Tuesday to midnight pst Tuesday night
for coastal waters from CAPE shoalwater wa to cascade head
or out 10 nm.

Small craft advisory for hazardous seas from 3 am to 10 am pst
Tuesday for coastal waters from CAPE shoalwater wa to
cascade head or out 10 nm.

Gale warning from midnight tonight to 3 am pst Wednesday for
waters from cascade head to florence or from 10 to 60 nm.

Small craft advisory for winds from midnight tonight to noon
pst Tuesday for coastal waters from cascade head to
florence or out 10 nm.

Gale warning from noon to 10 pm pst Tuesday for coastal waters
from cascade head to florence or out 10 nm.

Small craft advisory for hazardous seas from midnight tonight
to noon pst Tuesday for coastal waters from cascade head
to florence or out 10 nm.

Small craft advisory for rough columbia river bar from 4 pm to
8 pm pst Tuesday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46243 - Clatsop Spit, OR - 162 10 mi49 min 52°F6 ft
ASTO3 - 9439040 - Astoria, OR 11 mi49 min N 9.9 G 13 47°F 50°F1013.1 hPa
TOKW1 - 9440910 - Toke Point, WA 30 mi49 min E 13 G 16 46°F 50°F1014 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 30 mi89 min E 18 G 19 51°F 53°F7 ft1012.5 hPa (-2.4)47°F
46T29 34 mi29 min E 16 G 19 51°F 53°F1012.4 hPa47°F
46248 - Astoria Canyon, OR (179) 38 mi54 min 53°F7 ft
46211 - Grays Harbor, WA (036) 44 mi49 min 51°F5 ft
WPTW1 - 9441102 - Westport, WA 45 mi49 min ESE 15 G 20 43°F 51°F1014.2 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 49 mi49 min 52°F1013.3 hPa

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR8 mi24 minE 710.00 miLight Rain47°F45°F93%1013.1 hPa

Wind History from AST (wind in knots)
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Last 24hrS22
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NW10NW3CalmW4W4NW6W4NW10NW3CalmE4E3CalmE5E4E5E6E6E7
1 day agoSE3SE3SE4SE4E6SE4E7E6E5SE7S8S12
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2 days agoE4E5CalmCalmE5NE4CalmCalmE6E6NE6NE6W4SW6CalmS3CalmSE3SE4SE3SE3SE3SE3S3

Tide / Current Tables for Chinook, Baker Bay, Washington
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Chinook
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Tue -- 02:49 AM PST     7.19 feet High Tide
Tue -- 07:25 AM PST     Sunrise
Tue -- 07:51 AM PST     3.58 feet Low Tide
Tue -- 10:04 AM PST     Moonrise
Tue -- 01:48 PM PST     8.28 feet High Tide
Tue -- 04:37 PM PST     Sunset
Tue -- 07:23 PM PST     Moonset
Tue -- 08:34 PM PST     0.00 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.566.97.26.65.64.63.83.644.96.27.38.18.37.66.14.22.410.10.10.72

Tide / Current Tables for Columbia River entrance (N. Jetty), Washington
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Columbia River entrance (N. Jetty)
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Tue -- 02:35 AM PST     6.57 feet High Tide
Tue -- 07:26 AM PST     Sunrise
Tue -- 07:43 AM PST     3.29 feet Low Tide
Tue -- 10:04 AM PST     Moonrise
Tue -- 01:34 PM PST     7.72 feet High Tide
Tue -- 04:37 PM PST     Sunset
Tue -- 07:23 PM PST     Moonset
Tue -- 08:26 PM PST     0.10 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.55.76.46.55.954.13.43.33.84.8677.67.66.95.43.720.80.20.20.92.2

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

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Portland, OR (5,6,7,8)
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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.