Monday, May21, 2018 L-36.com


Marine Weather and Tides
Cannon Beach, OR

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:32AMSunset 8:45PM Monday May 21, 2018 7:22 PM PDT (02:22 UTC) Moonrise 11:14AMMoonset 12:58AM Illumination 47% Phase: First Quarter Moon; Moon at 7 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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PZZ250 Coastal Waters From Cape Shoalwater Wa To Cascade Head Or Out 10 Nm- Waters From Cape Shoalwater Wa To Cascade Head Or From 10 To 60 Nm- 215 Pm Pdt Mon May 21 2018
Tonight..N wind 10 to 15 kt. Gusts to 20 kt until early morning. Wind waves N 3 ft at 4 seconds. W swell 4 ft at 9 seconds.
Tue..N wind 10 to 15 kt with gusts to 20 kt, rising to 15 to 20 kt with gusts to 25 kt in the afternoon. Wind waves N 3 ft at 5 seconds. W swell 3 ft at 9 seconds.
Tue night..N wind 15 to 20 kt. Gusts to 25 kt in the evening. Wind waves N 3 ft at 6 seconds. W swell 5 ft at 10 seconds. Patchy drizzle and fog after midnight.
Wed..NW wind 10 to 15 kt. Gusts to 20 kt in the morning. Wind waves nw 2 ft at 4 seconds. W swell 6 ft at 11 seconds. Patchy drizzle and fog.
Wed night..NW wind 5 to 10 kt with gusts to 15 kt. Wind waves nw 2 ft at 4 seconds. W swell 6 ft at 12 seconds.
Thu..NW wind 10 kt with gusts to 15 kt. Wind waves 3 ft. W swell 6 ft.
Thu night..NW wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. W swell 5 ft.
Fri..NW wind 10 to 15 kt. Wind waves 4 ft. W swell 4 ft.
Sat..W wind 5 to 10 kt. Wind waves 2 ft. W swell 4 ft.
PZZ200 215 Pm Pdt Mon May 21 2018
Synopsis for the southern washington and northern oregon coast.. High pressure over the northeast pacific and thermal low pressure northern california and the great basin will lead to a summer-like northerly wind pattern for the remainder of the work week.

7 Day Forecast for Marine Location Near Cannon Beach, OR
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location: 45.83, -123.94     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 212153
afdpqr
area forecast discussion
national weather service portland or
254 pm pdt Mon may 21 2018

Synopsis Warm and dry through Tue days, as region stays under high
pressure. But, as a low over nevada drifts northeastward to the
northern rockies late Tue and wed, will see a chance of showers and
even a thunderstorm over the oregon cascades, mainly to south of
santiam pass. Another weather system will approach from the southwest
later in the week, with increasing southerly flow aloft. This will
bring cooler temperatures, along with increasing chance of showers
and perhaps a few thunderstorms. Though will see decreasing chance of
showers on Saturday and Sun under mostly cloudy skies, does appear
may be able to salvage the last part of holiday weekend with a dry
and mild Monday.

Short term Tonight through Thursday... Surface high pressure over
washington will maintain dry northerly flow across region tonight and
tue. Will be a great late spring afternoon evening across region,
with clear skies. Though may see some patchy stratus reform along the
washington coast this evening, possibly as far south as astoria or
tillamook.

Not a lot of change in the pattern tonight and tue, as high pres will
dominate our weather. Will see some patchy low clouds later tonight
into early Tue am, but any clouds inland will be very brief, and
likely confined to the lower columbia river, from kelso westward, and
in the south willamette valley. Think will have areas of low clouds
along the coast.

Now, the pesky upper low that has been parked over the great basin
will drift slowly northeastward towards idaho Tue and wed. As it
does, will see moisture wrapping around the low into eastern oregon,
and possibly up against the oregon cascades. Have kept a minor chance
of showers thunderstorms over the high cascades for Tue evening and
again on wed. Elsewhere, onshore flow will gradually increase tue
night and wed, with marine stratus spreading back along most of the
coast. Will add patchy drizzle or fog at that time for the coast and
river valleys into the western slopes of coast mtns. With the
increasing onshore flow, think will see areas of low clouds form
inland later Tue night into Wed am, primarily from eugene northward
to around salem or woodburn.

Rather warm for tue, with temperatures into the lower 80s for many
inland areas. Bit cooler on wed, as deepening marine layer will keep
highs only to around 70 in south willamette valley such as eugene and
corvallis. But, may still get into the mid and upper 70s around
portland vancouver metro where will start the day with less clouds.

Thursday could be more interesting. Another upper low will be
approaching california, with upper flow over oregon becoming more
southerly Wed night into thu. Start getting better divergence aloft
with getting more south to southeasterly 700 mb flow as the day
progresses. This will bring increasing chance of showers for Thu over
the oregon cascades and perhaps over good part of lane county. But,
still some question as to how much mid-level moisture is around for
the developing showers thunderstorms during the day. Either way, will
continue to evaluate this over next several shifts. Rockey.

Long term Thursday night through Sunday... Models starting to have
a bit more agreement, but still enough differences in run to run
consistency to make no major chances. Will see the california low
lift into the great basin Fri and sat. Seems highest chance of
showers and even a few thunderstorms will be on fri, when have better
flow aloft over region. But, as the low passes farther eastward on
sat, will generally see decreasing chance of showers. Will be tad
cooler, with coastal areas in the 50s and 60s to possibly lower 70s
inland. Mainly due to plenty of clouds on the onshore flow. Think
will be between systems on Sunday as ridging starts. This will make
for a mostly dry day Sun with slow burn out of clouds. But, can not
rule out a few showers along the coast north of lincoln city, and
over the foothills and cascades. Seems more likely now that Mon will
be dry, with mild conditions over the region. rockey.

Aviation A northwesterly onshore flow pattern under building
high pressure aloft should result in high end ifr to low end MVFR
stratus returning to at least the north oregon and south
washington coasts overnight. It could sneak up the columbia river
to portland, but latest model guidance is rather pessimistic
towards this idea.

Kpdx and approaches... A northwesterly onshore flow pattern under
building high pressure aloft should result in predominantlyVFR
conditions through 00z Wednesday. There is a small chance of high
end ifr to low end MVFR CIGS developing around 14-15z Tuesday.

Neuman

Marine High pressure over the northeast pacific and thermal
low pressure over northern california and or the great basin will
more or less continue for much of the next week and result in a
summer-like northerly wind pattern. Northerly winds look to be
strongest during the afternoon and evening on Tuesday and
possibly peaking again late Friday. An incoming front may begin
to shift winds around to a more southerly direction next
weekend, but confidence in details are low at this point. Expect
seas to hover between 3 and 7 feet through the weekend. Neuman

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 3 am pdt Tuesday for
coastal waters from cascade head or to florence or out 60
nm.

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds from 4 pm this afternoon to 3 am
pdt Tuesday for coastal waters from cascade head or to
florence or out 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 19 mi53 min 52°F1015.6 hPa
ASTO3 - 9439040 - Astoria, OR 28 mi53 min E 1 G 2.9 63°F 60°F1015.9 hPa
46243 - Clatsop Spit, OR - 162 28 mi53 min 58°F4 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi93 min N 16 G 18 55°F 59°F3 ft1017 hPa (-1.7)49°F
46248 - Astoria Canyon, OR (179) 43 mi58 min 59°F4 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi28 minNW 13 G 1910.00 miFair60°F50°F70%1015.8 hPa

Wind History from AST (wind in knots)
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Last 24hrNW10NW9NW8N8N8N6N6N6CalmCalmN5N4CalmNW7N4N5N6N6N10NW14NW16NW13
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1 day agoW5W5W4W4W4W4W4SW3SW4CalmSW3W4NW6NW5NW8N9NW10NW8NW13NW13NW12NW12NW12NW12
2 days agoW5NW3NW4CalmCalmCalmCalmCalmS3CalmCalmCalmCalmCalmCalmW3W7W8W9W9W10NW7W7W7

Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
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Mon -- 12:47 AM PDT     2.06 feet Low Tide
Mon -- 01:57 AM PDT     Moonset
Mon -- 05:37 AM PDT     Sunrise
Mon -- 05:48 AM PDT     6.35 feet High Tide
Mon -- 12:13 PM PDT     Moonrise
Mon -- 01:30 PM PDT     -0.51 feet Low Tide
Mon -- 07:49 PM PDT     6.01 feet High Tide
Mon -- 08:47 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.22.12.63.75.16.16.365.13.92.51.20.1-0.4-0.40.41.83.44.95.865.64.93.9

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
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Mon -- 01:57 AM PDT     Moonset
Mon -- 05:24 AM PDT     6.96 feet High Tide
Mon -- 05:38 AM PDT     Sunrise
Mon -- 12:13 PM PDT     Moonrise
Mon -- 12:30 PM PDT     -0.69 feet Low Tide
Mon -- 07:25 PM PDT     6.59 feet High Tide
Mon -- 08:47 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.73.24.15.26.36.96.86.14.83.21.50.2-0.6-0.60.21.53.14.75.96.56.55.84.83.7

Weather Map and Satellite Images
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wmap_P
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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Wind Forecast for Portland, OR (22,6,7,8)
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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.