Friday, February23, 2018 L-36.com


Marine Weather and Tides
Puget Island, 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 6:57AMSunset 5:52PM Friday February 23, 2018 12:39 PM PST (20:39 UTC) Moonrise 11:25AMMoonset 1:29AM Illumination 61% Phase: Waxing Gibbous; Moon at 8 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- 843 Am Pst Fri Feb 23 2018
.small craft advisory for rough columbia river bar in effect until 1 pm pst this afternoon...
.small craft advisory for rough columbia river bar in effect from this evening through Saturday afternoon...
In the main channel..Combined seas 7 ft today, 8 ft tonight building to 9 to 11 ft late tonight. However, seas will temporarily build to near 10 ft during the ebb around 1015 am this morning, and to near 10 ft during the ebb around 1030 pm tonight.
PZZ200 843 Am Pst Fri Feb 23 2018
Synopsis for southern washington and northern oregon coast.. Higher pres will remain over the ne pac. The next low and associated front will move S into the waters today and tonight, with another disturbance moving through Sat. Small craft advisory winds are likely at times through this weekend, with gales likely in the N waters late tonight and Sat morning and again late Sat night and Sun morning. The series of systems this weekend will result in seas building into at least the mid teens.

7 Day Forecast for Marine Location Near Puget Island, WA
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location: 46.16, -123.41     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 231813
afdpqr
area forecast discussion...

national weather service portland or
1013 am pst Fri feb 23 2018

Synopsis Chilly air mass will remain entrenched over the region
today into early next week. Another disturbance over the gulf of
alaska will spread precipitation across the region later today and
tonight, with snow levels still rather low. But, much stronger system
arrives on Sunday, with rain for the lowlands, and very heavy snow
and winds in the cascades. This cool and active weather continues
next week.

Short term Today through Sunday... Skies did finally clear out last
night, which combined with the very cold airmass in place, allowed
overnight temps to plummet to some of the coldest that we have seen
so far this winter. The interior lowlands were mainly in the low 20s,
and some outlying areas and the gorge and upper hood river valley got
down into the teens. Temperatures in the cascades were well down into
the single digits earlier this morning. The area saw several daily
low temperature records set or tied.

We will remain mainly dry through early this afternoon. However, high
and mid level clouds will be thickening up ahead of our next system
approaching from the northwest. This, combined with cold start to the
morning, will tap down our high temperature potential. Suspect most
areas will see inland afternoon temperatures in the mid 30s, but
lower 40s along the coast. Models have indicated some minor boost of
southerly winds across the region in advance of incoming system. But,
not all that strong of a gradient, and seems may be too southeasterly
to get much warmth. So, would not expect much of a temperature boost
from the winds.

Now, precipitation will spread into region from the northwest this
afternoon. Should be cold enough to support precipitation falling as
snow over much of the interior lowlands to start the event. Overall
1000 to 700 mb thicknesses not all that impressive, and suggest snow
levels will be slow to rise today pdx vancouver metro area northward.

Areas to the south will get a minor boost in the freezing level, with
snow level rising to 1000 to 1500 feet. But, temperatures will be
key to whether or not snow accumulates. Current thought is that may
see minor accumulations on below 500 feet to valley floor, but best
chance of such accumulations will be farther north, such as the
cowlitz river valley, where temps will be cool due to clouds will
thicken earlier.

Bottom line: precipitation will begin as snow. But due to light
nature in precipitation, think only minor accumulations (a dusting up
to an inch for the lowest elevations), with the best chances over the
northern tier of the fcst area. Slightly higher amounts possible for
the lowlands areas above 500 ft. A winter weather advisory was issued
at the end of the midnight shift for the interior lowlands from the
central willamette valley northward for late this afternoon through
the first half of the overnight period.

Winter weather advisories are also in effect for the willapa hills
and north coast range above 700 feet, as well as the cascades and
cascade foothills, starting later this afternoon. Total snowfall in
the coast range and willapa hills of 2 to 5 inches tonight through
sat, with the highest amounts above 1500 ft. Cascades will see
heavier snowfall, with 4 to 10 inches tonight, and again on Saturday.

Not much change overnight into Sat am, as showers will continue in
the northwesterly flow. Snow levels may dip down from time to time,
with spotty brief accumulations below the main snow level not out of
the question with any heavier shower. But overall, snow levels
gradually rise on Saturday, generally up to 1000 to 2000 feet.

Showers decreasing later Saturday afternoon and Sat evening. But next
system will be arriving later Sat night into early sun, with rain, or
snow above 1500 feet, increasing early Sun am. This system will be
packing more of a punch, with modest shot of precipitation along with
rather gusty winds over higher terrain. Current models showing fair
degree of consistency, so confidence in solutions fairly good. Should
see rain for lower elevations, but snow above about 2000 feet. And a
lot of it. Strong potential of life threatening winter conditions in
the cascades, with 1 to 2 feet, yes feet, of snow on sun. With the
snow will come gusty westerly winds, with gusts 45 to 60 mph,
resulting in near blizzard conditions at times on sun. Have posted
winter storm watch for the cascades for Sun and Sun evening.

If planning travel into or over the cascades this weekend, continue
to monitor weather forecasts, and think about your safety. Before you
go, ask yourself if you are prepared for winter driving conditions,
or being stuck or stranded on roadside. Pyle rockey

Long term No changes. Previous discussion follows...

Sunday night through Thursday... Fairly active pattern
expected will continue through the long range. GFS ensembles for 12z
mon indicate cold upper level troughing to remain over southwest
washington and northwest oregon. Operational runs of the GFS and
ecmwf in good agreement showing 500 mb north flow over the area,
with the upper trough axis extending from NE washington to extreme
nw california. The bulk of the dynamics will have shifted to
southwest and south central oregon by that time. Model 1000-500 mb
thickness values Sun night forecast to be near 520 dm amd 850 mb
temps still -6 to -8c. This translates to continued low snow levels.

Going with near the surface in the central columbia gorge and upper
hood river valley to around 500 ft in the north willamette valley
and clark county in SW washington. Snow levels to gradually rise the
south of the aforementioned areas rise to around 1000 ft.

Substantial snowfall is likely for the cascades and foothills and
higher elevations of the oregon coast range and also SW washington
willapa hills through Mon morning.

North flow aloft continues Mon and will push the upper trough axis
well to the south. A few of the GFS ensemble members want to close
off a 500 mb low near the central california coast mon. Maintained
climo or slightly above climo pops Mon due to the potential for weak
short-waves within the north flow aloft to migrate through the
forecast area. The ECMWF appears to be slightly faster with the next
short-wave Mon night and tue. Over-running warm-frontal precip
expected to slide south into SW washington and far NW oregon
sometime tue. GFS indicates slight moderation in 850 mb temps tue,
but still around -5c. Snow levels Mon night and Tue hover in the 750
to 1500 ft range. Models then show another upper level trough
carving out over the NE pac Wed through thu. Details differ, but the
general gist is for continued below normal daytime temperatures,
relatively low snow levels and unsettled conditions. This pattern
will bring additional snow to the cascades, which will continue
the trend of building snowpack. Weishaar

Aviation A cold and dry airmass currently in place will give
way to an incoming front and attendant band of precipitation late
this afternoon and evening. This will result inVFR conditions
deteriorating into MVFR tonight and Saturday, possibly even
locally ifr. Precipitation inland will likely start as flurries
this afternoon, with snow increasing this evening, turning to
rain by Saturday morning. Coastal locations may see a rain snow
mix this afternoon and evening before changing to rain. Best
chance of snow accumulations tonight will be ksle northward.

Pdx and approaches...VFR conditions today, though clouds will be
increasing withVFR CIGS this afternoon and possibly some
flurries. The snow will increase this evening with 1-2 inches
possible before changing to rain by sunrise Saturday. Conditions
will lower to MVFR and possibly ifr tonight. Pt

Marine The next system will be dropping southward from the
north across the waters during the day today. The main low
pressure area stays north of the waters near vancouver island
today through Saturday with small craft advisory threshold winds
over our waters, except gales in the northern waters late tonight
and Saturday morning, especially over the outer waters. There is
a bit of a lull in the winds later Saturday and Saturday evening
before another system drops south and brings more small craft
advisory threshold winds Sunday except gales are again pretty
likely over the northern waters later Saturday night and Sunday
morning.

This series of systems from today through the weekend produces a
nice northwesterly fetch off the b.C. Coast that will likely lead
to seas in our coastal waters being well up in the teens through
the weekend. Pt

Pqr watches warnings advisories
Or... Winter weather advisory from 4 pm this afternoon to 8 am pst
Saturday for central columbia river gorge-western columbia
river gorge.

Winter weather advisory from 3 pm this afternoon to 4 pm pst
Saturday for northern oregon cascade foothills.

Winter weather advisory from 6 pm this evening to 4 am pst
Sunday for cascades in lane county-northern oregon
cascades.

Winter storm watch from late Saturday night through Sunday
evening for cascades in lane county-northern oregon
cascades.

Winter weather advisory from 6 pm this evening to 4 pm pst
Saturday for cascade foothills in lane county.

Winter weather advisory from 4 pm this afternoon to 4 am pst
Saturday for greater portland metro area.

Winter weather advisory from 2 pm this afternoon to 4 am pst
Saturday for lower columbia.

Winter weather advisory from 3 pm this afternoon to noon pst
Saturday for coast range of northwest oregon.

Winter weather advisory from 6 pm this evening to 4 am pst
Saturday for central willamette valley.

Wa... Winter weather advisory from 4 pm this afternoon to 8 am pst
Saturday for central columbia river gorge-western columbia
river gorge.

Winter weather advisory from 3 pm this afternoon to 4 pm pst
Saturday for south washington cascade foothills.

Winter weather advisory from 6 pm this evening to 4 am pst
Sunday for south washington cascades.

Winter storm watch from late Saturday night through Sunday
evening for south washington cascades.

Winter weather advisory from 4 pm this afternoon to 4 am pst
Saturday for greater vancouver area.

Winter weather advisory from 2 pm this afternoon to 4 am pst
Saturday for i-5 corridor in cowlitz county.

Winter weather advisory from 3 pm this afternoon to noon pst
Saturday for willapa hills.

Pz... Small craft advisory for winds from noon today to 1 am pst
Saturday for waters from CAPE shoalwater wa to cascade
head or from 10 to 60 nm.

Gale warning from 1 am to 10 am pst Saturday for waters from
cape shoalwater wa to cascade head or from 10 to 60 nm.

Small craft advisory for winds from 2 pm this afternoon to 3 pm
pst Saturday for coastal waters from cascade head or to
florence or out 60 nm.

Small craft advisory for hazardous seas from 1 am to 3 pm pst
Saturday for coastal waters from CAPE shoalwater wa to
cascade head or out 10 nm-coastal waters from cascade head
or to florence or out 60 nm.

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

Small craft advisory for rough columbia river bar from 9 pm
this evening to 3 pm pst Saturday.

Small craft advisory for winds from noon today to 3 pm pst
Saturday for coastal waters from CAPE shoalwater wa to
cascade head or out 10 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 19 mi52 min S 2.9 G 6 34°F 40°F1029.8 hPa
LOPW1 - 9440422 - Longview, WA 24 mi52 min 40°F1032 hPa
46243 - Clatsop Spit, OR - 162 38 mi40 min 46°F6 ft
TOKW1 - 9440910 - Toke Point, WA 48 mi52 min S 13 G 16 37°F 42°F1029.4 hPa

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR25 mi45 minE 910.00 miOvercast36°F27°F70%1029.5 hPa

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Last 24hrNE8N6NW4N5N3N7CalmSE4SE4CalmSE4SE3SE3CalmSE3CalmCalmCalmCalmSE4E3NE3E5E9
1 day agoSE4N5E6SE5S4E6E3CalmS4E6E6CalmNE3E8NE8E9NE16
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2 days agoNE6E8NE13NE5E5NE7E9NE10E8E8E10E5SE3E7E5SW4E8E7E4SE4CalmE5E6E5

Tide / Current Tables for Wauna, Columbia River, Oregon
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Wauna
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Fri -- 12:09 AM PST     First Quarter
Fri -- 01:21 AM PST     0.82 feet Low Tide
Fri -- 01:28 AM PST     Moonset
Fri -- 07:03 AM PST     Sunrise
Fri -- 07:17 AM PST     6.57 feet High Tide
Fri -- 11:25 AM PST     Moonrise
Fri -- 03:29 PM PST     0.31 feet Low Tide
Fri -- 05:51 PM PST     Sunset
Fri -- 08:59 PM PST     4.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.30.90.91.62.84.55.96.56.45.54.22.91.91.20.70.40.412.23.44.24.54.23.4

Tide / Current Tables for Skamokawa, Steamboat Slough, Columbia River, Washington
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Skamokawa
Click for Map
Fri -- 12:09 AM PST     First Quarter
Fri -- 01:04 AM PST     1.26 feet Low Tide
Fri -- 01:28 AM PST     Moonset
Fri -- 06:59 AM PST     7.20 feet High Tide
Fri -- 07:03 AM PST     Sunrise
Fri -- 11:24 AM PST     Moonrise
Fri -- 03:04 PM PST     0.57 feet Low Tide
Fri -- 05:51 PM PST     Sunset
Fri -- 08:42 PM PST     5.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.31.52.43.95.66.87.26.85.84.43.12.11.40.80.60.91.83.14.24.95.14.63.7

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 (15,3,4,5)
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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.