Tuesday, May21, 2019 L-36.com


Marine Weather and Tides
Portland, 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 5:31AMSunset 8:42PM Tuesday May 21, 2019 4:19 PM PDT (23:19 UTC) Moonrise 10:44PMMoonset 6:52AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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
    EDIT      (on/off)   Help
PZZ210 Columbia River Bar- 230 Pm Pdt Tue May 21 2019
.small craft advisory for rough columbia river bar in effect from late tonight through Wednesday morning...
In the main channel.. - general seas...6 to 8 feet through Wednesday evening. - first ebb...around 745 pm this evening. Seas to 9 ft. - second ebb...strong ebb around 745 am Wednesday. Seas to 10 ft with breakers possible. - third ebb...around 830 pm Wednesday. Seas to 7 ft.
PZZ200 230 Pm Pdt Tue May 21 2019
Synopsis for the southern washington and northern oregon coast.. A low pressure center just west of heceta head early this afternoon will continue to weaken and slide southeast today. High pressure returns to the waters this evening and will hold through at least Friday. Another low pressure area drops south along the coast Friday and Friday night.


7 Day Forecast for Marine Location Near Portland, OR
   Hourly   EDIT   Help
location: 45.53, -122.68     debug


Area Discussion for - Portland, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kpqr 212229
afdpqr
area forecast discussion
national weather service portland or
316 pm pdt Tue may 21 2019

Synopsis Decreasing isolated showers in the north today with
scattered showers and isolated thunderstorms in the south willamette
valley, coast range and cascades this afternoon and evening.

Onshore flow will bring low clouds into the willamette valley
tonight and Wednesday. Gradual warming is expected Wednesday and
Thursday with the main threat for showers and isolated
thundershowers over the cascades in the afternoons.

Short term Today through Thursday... Upper low off southern oregon
coast will drift slowly southeast tonight and will be over southwest
oregon by Wednesday morning. As a result there are two areas of
light precipitation which have persisted through the day. One is
associated with wrap around deformation to the north of the low over
southwest washington and extreme northern oregon. This is producing
very light stratiform rain sprinkles and the second area of
precipitation this morning is over southwest oregon associated with
the instability near the upper low. In between these areas is some
breaks with not significant showers. Showers and a slight chance of
thunderstorms will continue along the cascades, foothills and mainly
southern south central willamette valley this evening until after
sunset. The cloud cover has limited the sunshine in the south
keeping temperatures at eugen well below normal.

On Wednesday the low will move southeast, but enough wrap around
moisture and instability will remain for a few showers over the
cascades and foothills and even a slight chance of a thunderstorm.

Thursday the low drops south and we are in more northwest flow with a
few week disturbances moving down toward oregon. This will keep the
threat of showers and isolated thunderstorms over the cascades but
the coast and valleys should be mostly dry. Schneider

Long term Friday night through Tuesday... Models are in agreement
that another shortwave will drop south in the northerly flow with a
cut off low developing over northwest oregon Friday for more showers
and isolated thunderstorms. That low moves slowly south Saturday,but
a trough remains around the area Sunday with the biggest
shower thunderstorm threat over the cascades. It appears that we will
remain in that pattern through early next week with mostly dry
conditions in the valleys and mountain showers. Schneider

Aviation GenerallyVFR across the forecast area early this
afternoon, but there have been brief period of MVFR associated
with shower activity. Surface low circulation just west of k6s2
at 20z. ExpectVFR to be the primary category through at least
06z wed. Models suggest the potential for MVFR stratus to settle
along the coast between 03z and 06z due to northwest to north
low-level flow. MVFR likely to spread to the inland sites between
10z and 12z. Improvement toVFR mid to late Wed morning.

Kpdx and approaches...VFR at the terminal and vicinity as of 20z,
but there are some localized CIGS around 020.VFR to prevail
through at least 10z wed. Models hint at MVFR marine stratus
developing at the terminal and east to kttd around 10z with cigs
015-025. Improvement toVFR late Wed morning. Weishaar

Marine Surface low was located about 50 nm west of heceta
head at 20z. The low is expected to move inland near CAPE blanco
late this afternoon. The 12z model runs in good agreement
showing the wind backing to the north as the low tracks southeast.

Small craft advisory level speeds develop mid to late afternoon.

Strongest wind will be beyond 20 nm, with gusts to 30 kt likely
this evening through wed. Small craft advisory conditions likely
to persist over the outer zones through wed. Speeds expected to
fall just below criteria for the inner zones wed. Have adjusted
the small craft advisories to show a longer duration for the
outer waters and ending it for the inner waters 12z wed. This
northerly wind pattern continues through at least fri, with small
craft advisory conditions to persist over the outer zones.

Seas will be in the 11 to 13 foot range through this evening and
then ease to 10 to 11 ft overnight. Seas hold at or near 10 ft
wed. Guidance shows seas exceeding 10 ft again Fri as the next
low pressure area along the british columbia coast drops south.

Seas then fall just below 10 ft Sat and then to around 5 ft sun.

Weishaar

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 5 pm pdt Wednesday for
waters from CAPE shoalwater wa to florence or from 10 to
60 nm.

Small craft advisory for hazardous seas until 9 am pdt
Wednesday for coastal waters from CAPE shoalwater wa to
florence or out 60 nm.

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

Small craft advisory for rough columbia river bar from 5 am to
9 am pdt Wednesday.

Interact with us via social media:


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 42 mi38 min 57°F1007.5 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 66 mi38 min 56°F1007.7 hPa
ASTO3 - 9439040 - Astoria, OR 74 mi38 min WNW 4.1 G 6 60°F 59°F1007.9 hPa

Wind History for Longview, WA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pearson Airfield, WA6 mi2.4 hrsNW 910.00 miFair63°F42°F47%1006.4 hPa
Portland, Portland International Airport, OR7 mi2.4 hrsWNW 910.00 miMostly Cloudy63°F42°F47%1006.4 hPa
Portland-Hillsboro Airport, OR14 mi2.4 hrsNNW 710.00 miPartly Cloudy62°F46°F58%1006.3 hPa
Portland, Portland-Troutdale Airport, OR15 mi2.4 hrsW 410.00 miFair63°F46°F54%1006 hPa
Scappoose Industrial Airpark, OR19 mi2.4 hrsN 610.00 miA Few Clouds65°F43°F45%1006.4 hPa
Aurora State Airport, OR20 mi2.4 hrsNNW 510.00 miMostly Cloudy64°F46°F54%1006.3 hPa

Wind History from VUO (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrSE4E8E11E10E8E5N3CalmSW5CalmCalmCalmCalmE3CalmCalmCalmCalmW3W5W6NW7NW6NW9
1 day agoN6W6NW7NW5NW6W5NW3NW5NW4NW4CalmNW3CalmCalmCalmW3CalmSE3CalmSE65SE4S5S4
2 days agoE9NE7
G16
E14
G22
SE11
G19
W5CalmNE5W6NW6NW3CalmSW7SE4SE5SE6E4CalmCalmCalmW3SW4W6NW55

Tide / Current Tables for Vancouver, Columbia River, Washington (dubious accuracy)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Vancouver
Click for Map
Tue -- 04:59 AM PDT     0.50 feet Low Tide
Tue -- 05:33 AM PDT     Sunrise
Tue -- 07:52 AM PDT     Moonset
Tue -- 09:15 AM PDT     1.93 feet High Tide
Tue -- 05:39 PM PDT     -0.31 feet Low Tide
Tue -- 08:41 PM PDT     Sunset
Tue -- 10:22 PM PDT     1.38 feet High Tide
Tue -- 11:44 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.11.110.90.60.50.71.11.61.91.81.51.10.80.60.40.1-0.2-0.300.61.11.41.3

Tide / Current Tables for Tillamook, Hoquarten Slough, Oregon
   EDIT      (on/off)   Help   One Week of Data
Tillamook
Click for Map
Tue -- 03:09 AM PDT     6.61 feet High Tide
Tue -- 05:38 AM PDT     Sunrise
Tue -- 07:57 AM PDT     Moonset
Tue -- 11:35 AM PDT     -0.75 feet Low Tide
Tue -- 04:59 PM PDT     5.17 feet High Tide
Tue -- 08:45 PM PDT     Sunset
Tue -- 11:25 PM PDT     1.60 feet Low Tide
Tue -- 11:48 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.44.15.76.66.45.84.83.52.10.9-0.1-0.7-0.70.31.93.54.85.24.94.33.52.721.6

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Portland, OR (19,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Portland, OR
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.