Friday, December13, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Minnehaha, WA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:41AMSunset 4:28PM Friday December 13, 2019 5:37 AM PST (13:37 UTC) Moonrise 6:04PMMoonset 9:09AM Illumination 97% 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
    EDIT      (on/off)   Help
PZZ210 Columbia River Bar- 240 Am Pst Fri Dec 13 2019
.small craft advisory in effect through Saturday afternoon...
In the main channel.. - general seas...16 to 18 ft this morning gradually decreasing to 10 to 12 ft by midday Saturday. - first ebb...around 515 am Friday. Seas near 21 ft with breakers. - second ebb...very strong. Around 515 pm Friday. Seas near 17 ft with breakers. - third ebb...around 6 am Saturday. Seas near 14 ft with breakers possible.
PZZ200 240 Am Pst Fri Dec 13 2019
Synopsis for the southern washington and northern oregon coast.. A weak surface low pressure will move southeastward towards california Saturday before weak high pressure shifts across the waters on Sunday. Offshore flow will likely develop early next week before a front brings increasing winds and seas again late next week.


7 Day Forecast for Marine Location Near Minnehaha, WA
   Hourly   EDIT   Help
location: 45.62, -122.67     debug


Area Discussion for - Portland, OR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KPQR 131119 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 318 AM PST Fri Dec 13 2019

SYNOPSIS. An active weather pattern will continue today as a strong jet stream remains directed at Oregon. Northwest flow aloft this weekend will maintain low chances for showers. High pressure returns early next week and then weakens by mid-week.

SHORT TERM. Friday through Sunday . Satellite loop shows a broad arching jet over Oregon that extends toward the Hawaiian Islands. The forecast area split by two weather environments. North of the jet a cool and unstable air mass supporting showers. To the south lay a west to east front southern Oregon. A low will move west to east along the front today bringing more stratiform precipitation. Snow for the Lane county Cascades will pick up again as the low slides inland this morning. Model QPF indicating probably enough for another 6 to 10 inches above 5000 ft with a few inches down to about 4000 ft. The north Oregon and south Washington Cascades will be in snow showers and accumulation are expected to be less. The snow level will continue to drop, reaching around 2500 ft by Sat morning. By then precipitation chances have diminished.

Thunderstorm chances continue today for the north Oregon/south Washington coastal waters and inland as far as the coast range and Willapa Hills. Forecast soundings for Astoria show thin CAPE through the afternoon up to the -20C level. SREF 12 hr calibrated thunderstorm probability indicates best chance for thunderstorm will be this morning. So far no lightning strikes detected over the last 6 hours or so. Other guidance like the HREF 4 hour calibrated thunderstorm probability is lower and more over WA than Oregon.

Cyclonic northwest flow aloft Saturday will maintain unsettled conditions over the area, but model QPF is is low. Coastal areas and mountains stand the best chance for showers. On Sunday and upper ridge builds offshore but enough cyclonic northwest flow aloft remains over the area for some mention of precip. /mh

LONG TERM. Sunday night through Thursday . Operational models and respective ensembles are in good agreement showing the upper ridge gradually drifting east early next week. The 500 mb cluster analysis based off the 00Z model runs valid 00Z Tue show good agreement with the ridge axis just off the coastline. Will likely need to consider air quality issues early next week, but this does not look like an extended ridging pattern. The ECMWF ensembles suggest the upper level ridge will shift east Wed as an upper level low approaches the north California coast. This results in a return to a split-flow pattern. However, it appears a more consolidated upper level flow returns late next week. Weishaar

AVIATION. A weak low pressure making landfall near the California/Oregon border around midday today will bring light rain and some IFR and MVFR flight restrictions to our southern taf sites today. Elsewhere, partial clearing and decreasing winds this morning will result in a mix of VFR, MVFR and IFR conditions as fog and low clouds try to develop between 12-18z Friday. Temperatures aloft will continue to remain cold so instability should limit how long fog and low clouds stick around after 18-20z Friday. Nonetheless, expect conditions to deteriorate once again beginning between 00-06z Friday.

KPDX AND APPROACHES . An unstable showery weather pattern will lead to primarily VFR conditions with occasional MVFR conditions through 00z Saturday. There is a chance IFR conditions will temporarily develop between 12-18z Saturday. Winds may be weak enough and there may be enough clearing that fog and low clouds try to develop and produce more a mix of MVFR and IFR conditions beginning between 00-06z Saturday and continuing through 18z Saturday. /Neuman

MARINE. A weak surface low pressure will make landfall along the Oregon/California border today. This will decrease pressure gradients across the area and result in decreasing winds. Another weak low pressure will then drop southeastward towards the Oregon/California border on Saturday. This track should keep winds below advisory thresholds.

A weak front will then push towards the region late Sunday into early Monday, but impacts look to be limited. High pressure will then build over the Inland Northwest and likely result in offshore flow developing during the first half of next week. A stronger front looks to push towards the waters on Thursday. A developing surface low pressure in its wake could bring a period of stronger winds and higher seas late next week.

A large westerly swell of 16 to 18 ft with a dominant period of 15 to 16 seconds will slowly ease this afternoon and evening. Expect seas to drop down below 10 ft Saturday afternoon or evening. Seas should then hover a few feet on either side of 10 ft for much of next week. However, higher seas could happen if the stronger scenarios with the developing low pressure pan out. /Neuman

PQR WATCHES/WARNINGS/ADVISORIES. OR . Winter Storm Warning until noon PST today for Cascades in Lane County.

WA . None. PZ . Small Craft Advisory until 4 PM PST Saturday for coastal waters from Cape Shoalwater WA to Florence OR out 10 NM.Columbia River Bar-coastal waters from Cape Shoalwater WA to Florence OR from 10 to 60 NM.




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 37 mi61 min 45°F1021.3 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 66 mi61 min 49°F1020.9 hPa
ASTO3 - 9439040 - Astoria, OR 71 mi49 min NNW 1.9 G 4.1 45°F 46°F1019.6 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. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pearson Airfield, WA1 mi44 minESE 310.00 miPartly Cloudy43°F39°F89%1021 hPa
Portland, Portland International Airport, OR4 mi44 minVar 310.00 miMostly Cloudy45°F41°F86%1021.2 hPa
Scappoose Industrial Airpark, OR14 mi44 minNNW 68.00 miOvercast40°F37°F93%1021.2 hPa
Portland, Portland-Troutdale Airport, OR15 mi44 minN 010.00 miPartly Cloudy44°F41°F89%1021 hPa
Portland-Hillsboro Airport, OR16 mi44 minN 00.50 miFog36°F36°F100%1021 hPa

Link to 5 minute data for KVUO

Wind History from VUO (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
Last 24hr45E5E9E7SE4NW5NW7SE7E5SW93S6S33W6SW7E34S3E4E3CalmE3
1 day ago4E7E76E9E9E7E7E5E7E8E86E11E9E7E8E7E6------4E4
2 days ago4E9SE4--CalmCalm564SE36E8E75E65E746545E74

Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Kelley Point, Oregon - IGNORE HEIGHTS
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS 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 (8,2,3,4)
      (on/off)   Help

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

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.