Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.
|Sunrise 5:26AM||Sunset 8:49PM||Tuesday May 26, 2020 8:30 PM PDT (03:30 UTC)||Moonrise 7:42AM||Moonset 11:44PM||Illumination 25%|
7 Day Forecast for Marine Location Near Minnehaha, WAHourly EDIT Help
Area Discussion for - Portland, OR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS66 KPQR 270302 AFDPQR
Area Forecast Discussion National Weather Service Portland OR 802 PM PDT Tue May 26 2020
SYNOPSIS. A ridge of high pressure will build in over the Pacific Northwest for the latter half of the work week, bringing dry weather and warmer temperatures. Low pressure moving up from the southwest will bring increasing chances for showers and thunderstorms Friday night and Saturday, followed by a return to cooler more seasonable temperatures.
SHORT TERM. This afternoon through Friday . No changes. Previous discussion follows. Visible satellite imagery shows a mix of sun and clouds across the forecast area this afternoon, with some fair weather cumulus and thin cirrus above. Temperatures are generally up 5-10 deg F versus Monday, except right along the coast where the afternoon sea breeze is keeping temps in the upper 50s to mid 60s. With dewpoints generally in the 50s, expect a mild evening with a slightly muggy feel to it. Patchy valley fog is possible later tonight into Wednesday morning.
The long-advertised warming trend is expected to continue into Wednesday and Thursday, as high pressure keeps the region dry with occasional high clouds. With plenty of sunshine and 850 mb temps warming from +8 deg C today to +14 or +15 deg C Wednesday afternoon, it seems reasonable to expect temps to reach into the 80s for the inland valleys Wednesday. While somewhat weak, onshore flow will maintain cooler temps along the coast, and marine stratus may become more widespread as marine inversions strengthen due to the warming aloft.
Temperatures should warm further Thursday, with most 12z/18z guidance suggesting 850 mb temps continuing to warm to +16 to +18 deg C depending on one's choice of model. Cannot completely rule out a couple inland spots reaching 90 deg F Thursday afternoon, but we held temperatures below that given the potential for high clouds and a weakly onshore pressure gradient.
Flow aloft backs from southwesterly to southerly Friday as upper level ridging strengthens over the western United States. This may allow enough moisture to fuel an isolated thunderstorm or two along the Lane County Cascades Friday afternoon, but there may still be a capping inversion in place from our departing ridge. Shower and thunderstorm chances will increase Friday night into Saturday as an upper low lifts northward into the region from the California coastal waters, potentially turning the flow southeasterly aloft. Models show a healthy amount of moisture involved in this system, so any showers Fri night/Sat could be efficient rain producers. Weagle
LONG TERM. Friday night through Tuesday . No changes. Previous discussion follows. As mentioned above, models show reasonable agreement that an upper low off the California coast will lift northward into Oregon Friday night and Saturday. This is a fairly classic thunderstorm pattern for us, with deep moisture and southeasterly flow aloft bringing the chance of thunder to anyone in our forecast area. Any surface-based thunderstorms Friday afternoon should diminish during the evening, but increasing instability aloft and the approaching upper low bring the chance for nocturnal high- based convection later Friday night into Saturday morning. Model QPF is rather impressive Fri night/Sat, bolstered by total precipitable water values on the order of 1.25 to 1.50 inch. This upper low will likely initiate a strong marine push at the low levels, resulting in a substantial cooldown Saturday. More seasonable temperatures can be expected Sunday into early next week, along with decreasing showers. Weagle
AVIATION. Generally VFR conditions continuing for the next 24 hours. Patchy shallow valley fog is possible 10Z-17Z, but the fog is unlikely to impact flight conditions at main airports.
KPDX AND APPROACHES . VFR conditions next 24 hours.
MARINE. A typical summer-time north-northwesterly wind pattern has will continue through the rest of the week as high pressure dominates the northeast Pacific and thermal-induced low pressure sets up near the north California and south Oregon coast. Winds generally peaking around 15 to 20 kt during the late afternoon and evening hours each day. The strongest winds will be over the central Oregon waters, where gusts will approach 25 kt.
In general, seas should hold in the 4 to 5 ft range through early Thursday. Significant wave heights will be mainly driven by wind waves during this time, as the background westerly swell will be weak, as suggested by the latest ENP/NWPS model guidance. Seas should begin to build Thursday afternoon and evening as prominent northerly flow continues and a more notable west- northwest swell develops. By Thursday night, combined seas should approach 10 ft and remain elevated into the weekend. -TK
PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory until 3 AM PDT Wednesday for coastal waters from Cascade Head OR to Florence OR out 60 NM.
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This discussion is for Northwest oregon and Southwest Washington from the Cascade crest to 60 nm offshore. This area is commonly referred to as the forecast area.
Weather Reporting StationsEDIT (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||37 mi||48 min||57°F||1019.6 hPa|
|TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR||66 mi||42 min||58°F||1019.8 hPa|
|ASTO3 - 9439040 - Astoria, OR||71 mi||42 min||Calm G 1.9||62°F||58°F||1020.4 hPa|
Wind History for Longview, WA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Pearson Airfield, WA||1 mi||37 min||NNW 7||10.00 mi||Fair||68°F||50°F||53%||1018.8 hPa|
|Portland, Portland International Airport, OR||4 mi||37 min||NW 8||10.00 mi||Partly Cloudy||66°F||52°F||61%||1018.9 hPa|
|Scappoose Industrial Airpark, OR||14 mi||37 min||NNW 6||10.00 mi||Fair||66°F||52°F||61%||1018.8 hPa|
|Portland, Portland-Troutdale Airport, OR||15 mi||37 min||WSW 3||10.00 mi||Fair||67°F||51°F||57%||1018.4 hPa|
|Portland-Hillsboro Airport, OR||16 mi||37 min||NE 6||10.00 mi||Fair||66°F||52°F||61%||1018.7 hPa|
Link to 5 minute data for KVUO
Wind History from VUO (wind in knots)
|1 day ago||N||N||Calm||W||Calm||Calm||Calm||Calm||NW||NW||Calm||W||Calm||Calm||Calm||Calm||E||Calm||SE||NW|
|2 days ago||Calm||Calm||W||Calm||Calm||SE||Calm||E||Calm||Calm||E||SE||Calm||SW||W||SW||SW||SW||SW||NW||N|
EDIT Weekend mode (on/off) (on/off)  Help One Week of Data
EDIT (on/off)  Help One Week of Data
Weather Map(on/off)  Help Weather Map
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 (23,6,7,8)(on/off)  Help
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