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Marine Weather and Tides
Version 3.4 |
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. 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. |
| Sunrise 6:05AM | Sunset 8:13PM | Wednesday April 25, 2018 4:48 PM PDT (23:48 UTC) | Moonrise 2:29PM | Moonset 3:24AM | Illumination 81% |  |
Marine Forecasts
EDIT (on/off) Help| PZZ210 Columbia River Bar- 219 Pm Pdt Wed Apr 25 2018 In the main channel..Combined seas 2 to 4 through Thursday. However, seas will temporarily build to near 5 ft during the ebbs around 245 am and 315 pm Thursday. | PZZ200 219 Pm Pdt Wed Apr 25 2018 Synopsis for the southern washington and northern oregon coast.. Weak low pressure over the waters today. A stronger southerly push arrives tonight and Thu, along with possible gusty winds and fog or low clouds. A weak front is expected over the weekend. |
7 Day Forecast for Marine Location Near Cedar Mill, OR
Hourly EDIT Helplocation: 45.58, -122.77 debug
Area Discussion for - Portland, OR
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus66 kpqr 252145 afdpqr area forecast discussion national weather service portland or 245 pm pdt Wed apr 25 2018 Synopsis High pressure over the will slowly shift toward the rockies tonight and thu. At same time, upper low pres will slowly approach from the southwest. So, expect a gradual increase of onshore flow on thu, with much cooler air and clouds across the region late thu and Thu night. As the upper low shifts into the region, will see shower from time to time, with plenty of clouds and cooler air for the weekend. Does appear that will have return to drier air with mild temperatures early to middle of next week. Short term Tonight through Saturday... Not a lot of change in overall pattern tonight. High pres sitting over the region will maintain dry conditions into thu. Thermal low pres sitting just inland from the coast. This shows up well with the widespread marine stratus along the coast, where temperatures are some 20 to 30 deg cooler this afternoon than as seen on tue. Thermal trough will slowly shift to the interior tonight, but marine layer remains shallow enough that will have difficult time punching inland. Upper low will slowly approach the region from the southwest on thu. But due to its slowness, seems the thermal trough will sit over the interior lowlands into Thu afternoon. As such, will see westerly onshore begin increasing trough the drainages in the coast range from lane county in the morning, progressing northward as the day progresses. This will keep some offshore flow at portland vancouver metro into the afternoon, then will see winds at that area flip to south or southwest towards late afternoon. With this pattern, would expect to see wide range in temps, with upper 60s to lower 70s at corvallis and eugene, to near 80 around portland vancouver metro. Thermal trough will works its way up and over the cascades Thu night, allowing for deepening marine layer on the west side. This will result in much more clouds for Thu night int Fri am. Now, other twist in our forecast will be threat of showers as the upper low approaches. At moment, not all that impressed with the potential, owing to fairly dry air mass and weak instability initially. Still, with proximity of thermal trough and afternoon surface heating, probably be enough to pop afternoon cumulus over the cascades. Will go with 20 pct pops over the cascades from santiam pass southward later Thu afternoon. Upper flow appears bit more south to southeasterly for Thu night and fri. So, as showers pop up over southern oregon and the cascades, will have motion such that showers will continue drifting northwestward in the flow. Do not think will see thunderstorm threat on fri, as will have fairly deep marine layer by that time. However, would not be surprised to see a few thunderstorms over the cascades on Fri into Fri evening. Have not put |
in forecast yet, as would like to see how the next few runs of models shake out to get more confidence. Still cool and showery on Saturday as the upper low shifts into northern california and southern oregon. rockey. Long term Sat night through Tuesday... Models consistent in showing the upper low progressing slowly across the pac nw, augmented by another shortwave attaching to the low Sat night and sun. This will keep a decent chance of showers over the region into sun, which combined with the low level onshore flow keeps temps a little below seasonal normals. Sun night into Mon models in pretty good agreement that the upper trough shifts east as a ridge of high pres presses in from the west. This will allow temps to moderate some during the early next week, while chances for showers diminish. Aviation Marine clouds will continue to produce areas of ifr conditions along the coast overnight. Offshore flow may try to develop along the south washington and north oregon coast, which could keep kastVFR overnight, but confidence is low. Farther south at konp, expect ifr conditions to gradually improve into MVFR thresholds as the marine layer deepens tonight and Thursday. There is a chance very high end ifr to MVFR stratus could work its way into keug towards 12-15z Thursday, but confidence is low. Expect marine clouds to spread across the rest of the forecast area after 00z Friday. Kpdx and approaches... Offshore flow will result inVFR conditions through 00z Friday. Marine clouds will likely spread over the terminal after 00z Friday. Neuman Marine Weak westerly winds this afternoon should return to a more southerly direction overnight, but should remain well less than 25 kt. Weak pressure gradients over the waters should keep winds generally below small craft advisory thresholds through the first half of the weekend. A weak front dropping southeastward across the waters on Sunday may result in small craft advisory level wind gusts of 25 kt across the waters Sunday and early Monday. These winds should result in seas climbing into the 9-12 ft range during this time. High pressure returning to the northeast pacific should result in winds and seas relaxing early next week. Neuman Pqr watches warnings advisories Or... None. Wa... None. Pz... None. 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 Temp | Water Temp | Waves | Pressure | DewPt |
| LOPW1 - 9440422 - Longview, WA | 38 mi | 49 min | 53°F | 1016.1 hPa (-1.4) | ||||
| TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR | 61 mi | 49 min | 57°F | |||||
| ASTO3 - 9439040 - Astoria, OR | 68 mi | 49 min | WSW 1.9 G 8.9 | 56°F | 55°F | 1017.1 hPa (-0.9) |
Wind History for Longview, WA
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
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| 2 days ago |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Pearson Airfield, WA | 6 mi | 56 min | W 5 | 10.00 mi | Fair | 81°F | 41°F | 24% | 1015.1 hPa |
| Portland, Portland International Airport, OR | 9 mi | 56 min | W 6 | 10.00 mi | A Few Clouds | 82°F | 37°F | 21% | 1015.4 hPa |
| Portland-Hillsboro Airport, OR | 10 mi | 56 min | N 0 | 10.00 mi | Fair | 84°F | 41°F | 22% | 1015.4 hPa |
| Scappoose Industrial Airpark, OR | 14 mi | 56 min | NE 6 | 10.00 mi | Fair | 81°F | 46°F | 29% | 1015.3 hPa |
| Portland, Portland-Troutdale Airport, OR | 20 mi | 56 min | NW 4 | 10.00 mi | Fair | 83°F | 39°F | 22% | 1015.3 hPa |
| Aurora State Airport, OR | 23 mi | 56 min | Var 4 | 10.00 mi | Fair | 84°F | 43°F | 24% | 1015.6 hPa |
Wind History from VUO (wind in knots)
| 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 | 3 PM | 4 PM | |
| Last 24hr | E G17 | E | E | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NW | W | W | SW | W | W | ||
| 1 day ago | E G23 | E G22 | E G22 | E G18 | E G16 | E G23 | E | E | E G21 | E G16 | E | E | E | Calm | Calm | E | E G20 | E G23 | E G20 | E G21 | E G18 | E G19 | E | NE G19 |
| 2 days ago | G18 | NW G17 | NW | NW G18 | NW | NW | W | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NW | W | SW | E G19 | E G22 | E G22 | E G22 | E G22 |
Tide / Current Tables for St. Johns, Willamette River, Oregon - IGNORE HEIGHTS
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| St. Johns Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the Wed -- 03:49 AM PDT 7.71 feet High Tide Wed -- 04:24 AM PDT Moonset Wed -- 06:08 AM PDT Sunrise Wed -- 12:03 PM PDT 2.25 feet Low Tide Wed -- 03:29 PM PDT Moonrise Wed -- 03:37 PM PDT 7.58 feet High Tide Wed -- 08:10 PM PDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 0.5 | 2.1 | 4.6 | 7 | 7.7 | 7.4 | 6.7 | 5.9 | 4.9 | 3.9 | 3.1 | 2.5 | 2.3 | 3.2 | 5.3 | 7.2 | 7.6 | 7.1 | 6.3 | 5.3 | 4.1 | 2.9 | 1.9 | 1 |
Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS
EDIT (on/off) Help One Week of Data| Vancouver Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the Wed -- 04:23 AM PDT Moonset Wed -- 04:27 AM PDT 7.71 feet High Tide Wed -- 06:07 AM PDT Sunrise Wed -- 12:15 PM PDT 2.25 feet Low Tide Wed -- 03:28 PM PDT Moonrise Wed -- 04:14 PM PDT 7.58 feet High Tide Wed -- 08:10 PM PDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 0.4 | 1.5 | 3.6 | 5.9 | 7.5 | 7.6 | 7.1 | 6.3 | 5.3 | 4.3 | 3.3 | 2.6 | 2.3 | 2.7 | 4.4 | 6.4 | 7.5 | 7.4 | 6.8 | 5.8 | 4.6 | 3.4 | 2.2 | 1.2 |
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Portland, OR (19,4,5,8)
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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. |