Friday, March22, 2019 L-36.com


Marine Weather and Tides
Cannon Beach, OR

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:09AMSunset 7:28PM Friday March 22, 2019 5:09 PM PDT (00:09 UTC) Moonrise 8:50PMMoonset 7:32AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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-coastal Waters From Cascade Head To Florence Or Out 10 Nm- 256 Pm Pdt Fri Mar 22 2019
.small craft advisory for winds in effect until 5 pm pdt this afternoon...
.small craft advisory for hazardous seas in effect through Saturday evening...
Tonight..S wind 20 to 25 kt with gusts to 30 kt, easing to 5 to 10 kt with gusts to 15 kt after midnight. Combined seas 12 ft with a dominant period of 16 seconds. Rain before dark, then showers likely.
Sat..S wind 5 to 10 kt. Wind waves S 2 ft at 4 seconds. W swell 12 ft at 15 seconds. A chance of showers and a slight chance of tstms in the morning.
Sat night..S wind 5 to 10 kt. Wind waves S 1 ft at 4 seconds. W swell 11 ft at 15 seconds.
Sun..E wind 5 to 10 kt. Wind waves E 1 ft at 4 seconds. W swell 8 ft at 14 seconds.
Sun night..NE wind 5 to 10 kt. Gusts to 15 kt after midnight. Wind waves ne 2 ft at 4 seconds. W swell 8 ft at 13 seconds.
Mon..SE wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. W swell 9 ft. Rain.
Mon night..S wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. W swell 9 ft. Showers likely.
Tue..SE wind 5 to 10 kt. Wind waves 2 ft. W swell 7 ft.
Wed..NE wind 5 to 10 kt. Wind waves 2 ft. SW swell 4 ft.
PZZ200 256 Pm Pdt Fri Mar 22 2019
Synopsis for the southern washington and northern oregon coast.. A cold front is moving onshore this afternoon. High pres will rebuild over the pac nw this weekend. Unsettled weather returns next week, with another front arriving Sunday night into Monday.


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 222150
afdpqr
area forecast discussion
national weather service portland or
249 pm pdt Fri mar 22 2019

Synopsis A cold front will continue to move northeast across the
forecast area this afternoon bringing a period of rain followed by
some showers tonight and Saturday. Dry conditions are expected
Sunday, before another series of frontal systems brings more rain
next week.

Short term Rest of today through Monday... Radar imagery shows a
narrow cold front moving across the region this afternoon, with the
back edge of the front starting to move into southwest oregon. This
front has generally brought up to 0.20 inches of rain to southern
portions of the forecast area and is expected to bring up to an
additional 0.10 inches to northern portions of the area. Snow levels
are currently above 5000 feet this afternoon so not expecting to see
accumulating snow at pass level today.

Models continues to show the cold front moving northeast across the
pacific northwest this evening ushering in a moist and unstable air
mass as the base of the upper level trough approaches the northern
california coast. This upper level trough will then move inland on
Saturday. Guidance continues to show a decent cold pool accompanying
the upper level trough, with modest mid level instability and weak
surface based instability aided by a weak shortwave disturbance and
daytime heating. Will continue to keep thunderstorms in the forecast
for Saturday. Snow levels are expected to lower to around 3000 feet
on Saturday, with another couple of inches of new snow possible in
the cascades but don't think we will reach advisory criteria. Also,
given the lowering snow levels can't rule out the chance that some of
the stronger showers may produce some small hail
shower chances will come to an end late Saturday as the upper level
trough moves east of the cascades and upper level ridging approaches
the region. Given a stabilizing air mass, residual surface moisture,
and light winds suspect most areas in the interior will see some
patchy fog develop Saturday night and linger into Sunday morning.

Otherwise, expect a rather pleasant Sunday with sunshine returning
for the afternoon and evening and temperatures climbing back into the
60s.

Rain chances will start to increase late Sunday as another cold front
approaches the region from the south. This front is expected to
approach the coast by Monday morning and move inland through the day
bringing another round of valley rain and a couple of inches of new
snow for the high cascades. 64

Long term Monday night through Friday... Active weather next week,
as a large upper-level trough sits off the coast of washington and
oregon most of the week, sending shortwaves into the pacific
northwest. Used the national blend of models primarily for
precipitation chances through next week because deterministic
guidance doesn't reflect the uncertainty in the timing of these
shortwaves that is reflected in more of a probabilistic forecast
produced by the nbm.

Monday night we will have lingering post-frontal showers from the
first of these shortwaves. Deterministic models (gfs and ecmwf) show
us drying out on Tuesday as we are between systems. The nbm,
however, keeps a chance of a few showers suggesting a the
possibility of weaker, unresolved shortwaves generating a few
showers on Tuesday. Have left a chance of showers in the forecast on
Tuesday. Wednesday, deterministic models show another shortwave
moving in, and this is supported by an increase in chance for rain
in the nbm. Therefore, have likely pops in the forecast for
Wednesday. Thursday, the trough that has been sitting offshore all
week finally starts to weaken and move onshore. This will keep
showers over our area through Thursday. There is greater uncertainty
on Friday, with some guidance showing the development of an upper-
level ridge starting Friday into next weekend, which would dry us
out, or the pattern turning to more zonal flow which could keep a
chance for showers on Friday. For that reason, the nbm keeps a
chance for showers on Friday. The nbm does show a trend toward lower
pops, however, suggesting most of the ensemble members are leaning
toward drier conditions Friday going into next weekend. -mccoy

Aviation A cold front is currently approaching the coast,
resulting in light rain spreading in across the region.

Conditions have deteriorated to predominantly MVFR along the
coast, with mainlyVFR prevailing inland. Expect CIGS to lower
to a mix of MVFR and lowVFR over the interior lowlands over the
next couple of hours as the front begins to push onshore. Rain
will taper to showers behind the front later this afternoon and
this evening. Expect occasional showers tonight and much of sat.

Conditions should remain mainlyVFR in the post-frontal airmass,
with occasional MVFR in heavier showers. It is possible that some
patchy fog could form overnight into early Sat in the more fog
prone spots.

Kpdx and approaches... A cold front is spreading light rain
onshore this afternoon. Conditions are currentlyVFR, but may
deteriorate to MVFR for a few hours later in the afternoon. Rain
will taper to showers behind the frontal passage between 00z-02z
sat. Expect occasional showers tonight and sat, with
predominantlyVFR conditions. Pyle

Marine A cold front is moving through the waters this
afternoon, resulting in gale force s-se winds over the outer
waters and small craft advisory winds closer to shore. The front
will be onshore by late afternoon. Winds will become
southwesterly behind the front and drop off rapidly. Will allow
the gale warning to expire for the outer waters at 3 pm, and
winds should generally be 20 kt or less across all the waters by
5-6 pm. A showery post-frontal air mass will remain over the
waters tonight and sat, with a slight chance of thunderstorms
over the waters during this time. Winds will remain fairly quiet
through the weekend. An occluded front will approach the waters
sun night into mon. The front is modeled to be weakening as it
moves in, but it will still bring the potential for another round
of small craft advisory winds. Unsettled weather looks to
continue through much of next week, but no significant storms
are anticipated at this time.

A longer period westerly swell train is arriving this afternoon.

Seas have now built into the low teens, with a dominant period of
around 16 seconds. Seas will be peaking at around 12 to 14 ft
later this afternoon and tonight. Seas are likely to remain
above 10 ft well into Sat night, before subsiding early sun. Seas
should then remain below 10 ft for most of next week, although
they may briefly near 10 ft again with this system on Monday.

Pyle

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for hazardous seas until 11 pm pdt
Saturday for coastal waters from CAPE shoalwater wa to
florence or out 60 nm.

Small craft advisory for winds until 5 pm pdt this afternoon
for coastal waters from CAPE shoalwater wa to florence or
out 10 nm.

Small craft advisory for rough columbia river bar until 11 pm
pdt Saturday.

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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 mi40 min 51°F1015.6 hPa
46243 - Clatsop Spit, OR - 162 28 mi40 min 50°F10 ft
ASTO3 - 9439040 - Astoria, OR 28 mi40 min 51°F 45°F1014.1 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi80 min SSW 16 G 18 51°F 49°F12 ft1013.5 hPa (+3.0)47°F
46248 - Astoria Canyon, OR (179) 43 mi40 min 50°F12 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi75 minSSW 10 G 1910.00 miOvercast51°F48°F92%1014 hPa

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Last 24hr--SW3CalmCalmE3CalmCalmSE3CalmSE4CalmE3E3E3CalmE6SE3SE6SE5E5S9S13SW10
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S4E3E4SE4Calm3S64CalmE5E3CalmNE3E4N5N4S6SW11SW9SW12SW11
2 days agoE11E8E3E43NW3N7CalmW7N5W4CalmSW7CalmCalmCalmW4SW3E9SE11SE10SE9W10SW14
G24

Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
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Fri -- 02:30 AM PDT     7.66 feet High Tide
Fri -- 07:15 AM PDT     Sunrise
Fri -- 08:31 AM PDT     Moonset
Fri -- 09:21 AM PDT     0.02 feet Low Tide
Fri -- 02:50 PM PDT     7.31 feet High Tide
Fri -- 07:30 PM PDT     Sunset
Fri -- 09:35 PM PDT     0.17 feet Low Tide
Fri -- 09:49 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.46.37.57.66.85.43.720.70.10.31.53.55.56.97.36.85.64.12.51.10.30.31.3

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
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Fri -- 02:05 AM PDT     8.41 feet High Tide
Fri -- 07:15 AM PDT     Sunrise
Fri -- 08:19 AM PDT     0.03 feet Low Tide
Fri -- 08:31 AM PDT     Moonset
Fri -- 02:24 PM PDT     8.02 feet High Tide
Fri -- 07:30 PM PDT     Sunset
Fri -- 08:33 PM PDT     0.22 feet Low Tide
Fri -- 09:49 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.27.88.486.64.62.60.90.10.31.53.35.377.97.86.85.13.11.40.40.31.33

Weather Map and Satellite Images
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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 (20,4,5,8)
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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.