Monday, August21, 2017 L-36.com


Marine Weather and Tides
Willapa, 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 6:19AMSunset 8:17PM Sunday August 20, 2017 9:23 PM PDT (04:23 UTC) Moonrise 3:59AMMoonset 6:47PM Illumination 1% Phase: Waning Crescent; 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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PZZ110 Grays harbor bar- 830 pm pdt Sun aug 20 2017 combined seas 4 or 5 ft, except building to 6 ft during the very strong ebb current Monday morning. Bar conditions light. The maximum ebb currents will occur around 445 am and 515 pm Monday. PZZ100 830 Pm Pdt Sun Aug 20 2017
Synopsis for the northern and central washington coastal and inland waters..Higher pres off the coast with lower pres east of the the cascades will maintain varying levels of onshore flow into western washington through late this week. A weak system moving into british columbia mid week will likely strengthen the onshore flow.

7 Day Forecast for Marine Location Near Willapa, WA
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location: 46.68, -123.67     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 210411 cca
afdpqr
area forecast discussion
national weather service portland or
901 pm pdt Sun aug 20 2017

Synopsis A weak upper level disturbance is departing the area,
with today's mid and high clouds on the decrease. High pressure
builds in on Monday and Tuesday, for warming temperatures and clear
skies inland, and occasional low clouds in northerly flow along the
coast. Another weak system will bring significant cooling to the
forecast area late Wednesday and Thursday, as well as more clouds and
a few light showers to the forecast area Wednesday night and
Thursday. Expect drying as temperatures warm back to above seasonal
normals levels next weekend.

Short term Tonight through Wednesday... Satellite imagery shows a
relatively narrow band of stratus just offshore, extending from
southwest wa through central oregon. Very little change in the wind
direction overnight along the coast, and based on the latest hrrr and
00z NAM low-level cloud, ceiling, and rh forecasts, expect this
stratus band to persist along the beaches and just offshore. Right
now, skies scattered to mostly clear over coastal ASOS sites, and
little change to the northerly winds will keep the stratus near the
coastline, with a push into the lower columbia river valley. This
evening's hrrr trends indicate a slightly better than even chance to
view the eclipse along coastal sites by mid morning. For a high
probability though, inland locations are a much better bet. In the
willamette valley, the flow above the surface veers to
north-northeasterly overnight with some drying above 950 mb. There
could be some patchy thin stratus far northern willamette valley and
cascade foothills before 16z, but overall should be minimal and
short-lived with clear skies thereafter. The remainder of the
forecast discussion is unchanged from previous afd. Drb
Monday afternoon will be sunny as the morning clouds clear
to a little ways off the coast under a building upper ridge. The air
mass will be warming, and coastal temperatures could reach the lower
70s in areas, with upper 80s and lowers 90s common inland except mid
80s near kelso.

The upper ridge starts to move off to the east Tuesday, but it is
still close enough for another warm day inland Tuesday with
temperatures in the mid 80s to around 90. We don't expect much in the
way of lower clouds inland on Tuesday, though the coast will see
increasing lower clouds that may persist or hug the coastline much of
the day.

Southwest flow aloft will continue to increase Tuesday night and
Wednesday as the upper ridge continues moving eastward and the next
system approaches. This will mean persistent cloud cover at the
coast, perhaps even some spotty drizzle, and more morning low clouds
inland with resultant cooler temps. Temperatures inland will likely
be close to or a bit below seasonal normals Wednesday.

Some convection late Tuesday spreading north from a weak low over
california might clip the willamette pass area, but southwest flow
aloft will limit any coverage and how far north it can reach in our
cascades as it mainly spreads into central and eastern oregon. The
approach of the system Wednesday is making any chance of convection
in that area looking less likely as the southwest flow aloft and the
low level onshore flow increases. Tolleson

Long term Wednesday night through Sunday... Models are in good
agreement a shortwave trough will slide eastward across british
columbia and washington Wednesday night and Thursday. This should
bring cooler temperatures, increased cloud cover and a chance of
light rain, particularly along the coast and across the cascade
foothills, but even portions of the willamette valley could see some
light rain. Shortwave ridging should then build over the pacific
northwest and bring a return to more sunshine and above average
temperatures towards next weekend. Neuman tolleson

Aviation A sliver of low clouds have developed along the
immediate coast. These clouds have not made it to the coastal
asos sites this evening, but web cameras and a few observations
at konp suggest the cloud layer is shallow with very low cigs
(200-500 ft agl). Expect ifr conditions to impact kast and konp
tonight through Monday morning. Light east winds along the
central oregon coast may clear the skies near konp late in the
morning. The winds should remain n-nw north of ktmk keeping
cloudy skies with CIGS lifting to MVFR late in the morning. Low
clouds will likely develop in the lower columbia river with MVFR
cigs for kspb and kkls for a few hours in the morning. Otherwise
vfr conditions for inland areas. Gusty north winds expected near
konp, kcvo, and keug Monday afternoon.

Kpdx and approaches...VFR conditions tonight and Monday. Marine
stratus will push part way up the columbia river tonight to
around kls with MVFR or even ifr cigs. May get some low clouds
near kpdx, but likely just a scattered layer for a couple of
hours, 12-16z time frame. ~tj

Marine A persistent weather pattern will result in little
change in the marine weather the next several days. High
pressure holds over the NE pacific while a thermal trough builds
along the south oregon coast. The thermal trough strengthens
each afternoon such that the north winds will increase and become
gusty each afternoon. The winds south of cascade head have gusted
to around 25 kt the past couple of afternoons and evenings and
will continue to do so through Monday, supporting the current
small craft advisory for winds. These winds have been most
noticeable within 10 nm, but can not rule out the possibility for
increased winds further out so will continue to have the advisory
for out to 60 nm south of cascade head.

The seas are locally generated from the winds and will generally
remain 4 to 6 ft with periods of 9 to 10 seconds. The seas will
be choppier in the southern waters for the afternoons with
dominant periods possibly around 8 seconds. ~tj

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 11 pm pdt Monday for
coastal waters from cascade head or to florence or out 60
nm.

Small craft advisory for rough columbia river bar from 3 am to
7 am pdt Monday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TOKW1 - 9440910 - Toke Point, WA 16 mi54 min NNW 7 G 11 61°F 64°F1020.4 hPa
WPTW1 - 9441102 - Westport, WA 28 mi54 min NNW 9.9 G 14 56°F 57°F1020.2 hPa
ASTO3 - 9439040 - Astoria, OR 33 mi54 min N 8.9 G 13 64°F 71°F1019.7 hPa
46211 - Grays Harbor, WA (036) 33 mi54 min 56°F5 ft
46243 - Clatsop Spit, OR - 162 40 mi54 min 57°F4 ft
46096 43 mi114 min N 9.7 G 9.7 54°F 59°F1020.6 hPa

Wind History for Toke Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hoquiam, Bowerman Airport, WA26 mi31 minW 610.00 miFair61°F57°F90%1020.6 hPa

Wind History from HQM (wind in knots)
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Last 24hrW3W5NW3SW4CalmCalmCalmCalmCalmCalmCalmSE3SE4S5S5W9W11W16W12
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1 day agoW9W9W8W6NW4NW4Calm3CalmCalmSW6W7W8W6W11W13W16W18W16
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2 days ago------------------------SW10SW10SW9SW10SW12SW12SW13W12W12W10W10W10

Tide / Current Tables for Willapa City, Willapa River, Washington
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Willapa City
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Mon -- 01:53 AM PDT     10.72 feet High Tide
Mon -- 06:10 AM PDT     Moonrise
Mon -- 06:20 AM PDT     Sunrise
Mon -- 07:53 AM PDT     -2.11 feet Low Tide
Mon -- 11:31 AM PDT     New Moon
Mon -- 02:58 PM PDT     9.50 feet High Tide
Mon -- 08:06 PM PDT     0.82 feet Low Tide
Mon -- 08:13 PM PDT     Sunset
Mon -- 08:23 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
910.310.79.87.74.91.6-1.2-2.1-1.20.735.47.599.58.874.72.10.81.43.15.2

Tide / Current Tables for South Bend, Willapa River, Willapa Bay, Washington
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South Bend
Click for Map
Mon -- 01:10 AM PDT     11.30 feet High Tide
Mon -- 06:11 AM PDT     Moonrise
Mon -- 06:21 AM PDT     Sunrise
Mon -- 07:36 AM PDT     -1.53 feet Low Tide
Mon -- 11:31 AM PDT     New Moon
Mon -- 02:10 PM PDT     9.87 feet High Tide
Mon -- 07:47 PM PDT     1.36 feet Low Tide
Mon -- 08:14 PM PDT     Sunset
Mon -- 08:23 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.411.310.89.16.63.70.8-1.2-1.4-0.124.5799.99.58.16.13.81.91.42.54.56.7

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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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.