Cascade Head to Florence OR from 10 to 60 NM Marine Forecast
| Rest Of Today...S Wind To 5 Kt. Wind Waves S 1 Ft At 4 Seconds. Nw Swell 3 Ft At 9 Seconds. Widespread Dense Fog In The Morning. Areas Of Dense Fog In The Afternoon. |
| Tonight...N Wind To 5 Kt. Wind Waves N 1 Ft At 4 Seconds. Nw Swell 3 Ft At 9 Seconds. Areas Of Dense Fog In The Evening. Patchy Dense Fog After Midnight. |
| Wed...Ne Wind 5 Kt, Backing To Nw To 5 Kt In The Afternoon. Wind Waves Ne 1 Ft At 4 Seconds, Shifting To The Nw At 4 Seconds In The Afternoon. Nw Swell 3 Ft At 9 Seconds. Patchy Dense Fog In The Morning. |
| Wed Night...Nw Wind 5 Kt, Backing To Se After Midnight. Wind Waves Nw 1 Ft At 4 Seconds, Shifting To The Se At 4 Seconds After Midnight. Nw Swell 3 Ft At 9 Seconds. |
| Thu...S Wind 5 Kt. Wind Waves S 1 Ft At 4 Seconds. Nw Swell 3 Ft At 10 Seconds. |
| Thu Night...N Wind 5 To 10 Kt. Wind Waves N 2 Ft At 4 Seconds. Nw Swell 3 Ft At 10 Seconds. |
| Fri...N Wind 5 To 10 Kt. Wind Waves 2 Ft. Nw Swell 4 Ft. |
| Sat...Nw Wind 5 To 10 Kt. Wind Waves 2 Ft. Nw Swell 4 Ft. |
| Area Forecast Discussion National Weather Service Portland OR 420pm PDT Sunday August 16 2026 Updated aviation discussion. Synopsis Seasonably warm and dry conditions expected through much of the week with morning clouds and afternoon clearing. Winds generally out of the west to northwest, strongest in the afternoon and along the Central Columbia River Gorge and Upper Hood River Valley. Next best chances for light rainfall arrive Friday into next weekend. Now through Saturday...Seasonably dry and warm conditions continue through the week with minimal weather impacts. The large-scale pattern remains fairly stagnant through the period, with broad and relatively flat upper-level ridging over the majority of CONUS and a weak, positively-tilted upper- level troughing over the northeast Pacific. This pattern will support continued onshore flow, maintaining near-normal daily high temperatures in the 80s within inland valleys and 60s along the coast, and overnight lows in the 50s across the region. Mornings will be characterized by clouds, especially along the coast, which will tend to clear by the afternoon. Light west to northwest winds will, peaking each afternoon. The strongest winds are likely to be along the Central Columbia River Gorge and Hood River Valley, but impacts are not anticipated. The majority of ensemble members are in agreement that upper- level ridging over the Rockies and Great Basin will build late in the workweek, which would favor a brief warm-up on Thursday. However, ensemble guidance shows the upper-level trough over the northeast Pacific shifting onshore Friday into the weekend, resulting in slightly cooler temperatures and winds coming from the west to southwest. Chances for precipitation also increase to 10-30% across the region during this time, however, there is still high uncertainty in the timing and potential rain amounts. A weaker front at the end of the week would have a hard time counteracting the dry airmass in place and make accumulating rainfall unlikely. -10/36 Marine A largely stagnant pattern continues through much of the week with high pressure offshore supporting northerly to northwesterly winds of 8-15 kt and afternoon gusts up to 20 kt. Weak low pressure moving over the northeast Pacific Friday into next weekend will shift winds out of the west to southwest across the waters, but chances for gusts exceeding 21 kt remain low, only 5-10%. Benign seas of 3-6 ft persist through the period. -10/36 NOAA Portland OR Office: Watches - Warnings - Advisories OR...None. WA...None. PZ...None. |
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