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 ...Corrected National Weather Service Portland OR 948pm PST Wednesday Jan 7 2026 Updated aviation and marine discussions. Synopsis Showery conditions expected to persist through Thursday afternoon. Heavy snow is expected in the Cascades with another 6 to 12 inches possible around pass levels. There is a 20-40% chance snow mixes in with rain overnight in the Willamette Valley. No accumulations or travel issues are expected given the warm ground conditions and lows in the mid 30s. Drying trend to end the week with potential for more mild temperatures early next week. .SHORT TERM...Wednesday afternoon through Thursday...An upper level trough continues to move over the region, supporting a cold front that passed through earlier today. Precipitation was moderate to heavy along the frontal boundary and has transitioned to showers behind the front. The environment behind the front is unstable as colder air aloft moves in from the northwest which is helping support a few taller cells capable of producing lightning. The best instability remains along the coast where models show CAPE values as high as 200-300 j/kg, more than enough to get a few rumbles of thunder and small hail. Storm chances decrease through the evening as the surface cools and instability wanes. Meanwhile, this system is bringing much needed heavy snow to the Cascades. A Winter Storm Warning remains in effect across the Cascades through 4pm Thursday. Several observation station in the higher terrain have reported over a foot of snow since Tuesday morning. Another 6 to 12 inches of snow is expected between 2000 and 4000 feet with totals closer to 18 to 24 inches along the highest peaks through Thursday afternoon. Snowfall rates of 0.5 to 1.0 inches will be possible at pass level through around midnight tonight. Travel through the Cascade passes will be impacted , make sure to pack an emergency supply kit and refer to ODOT/WSDOT for the latest travel restrictions. There is a 20-40% chance for snow to mix in with the rain showers overnight in the Willamette Valley as the cooler air moves in overhead. Not expecting any accumulations or travel issues given the warm ground temperatures and expected air temperatures in the mid 30s. Showers continue through much of Thursday with mainly light rainfall across the lowlands and heavy snow in the Cascades. Precipitation should taper off Thursday evening as high pressure build into the region. -19 Long Term Thursday Night through Wednesday...Dry weather returns on Friday as ensemble guidance is in agreement of an upper level ridge building over the Pacific Northwest. By the weekend, the majority of ensemble members are showing some light rain along the coast and southwest Washington as a weak shortwave moves in though will be non-impactful. Ensembles have come into better agreement with high pressure ridging. 500 mb heigheights shows good agreement within the ensembles regarding the consistency of the ridge. Ensembles are showing better agreement in the ridge building over the region early next week and supporting dry and mild conditions into the middle of the week. Could see a warm up into the upper 50s to low 60s by Tuesday areas west of the Cascades. -19/10 Marine As of 10pm PST Wednesday, onshore westerly winds expected to continue through Thursday night, though as high pressure off the northern California coast begins building north overnight, winds will begin to decrease. Current buoy observations indicate winds remain breezy with gusts up to 30 kt, but over the next few hours, winds will decrease quickly to gusts around 20-25 kts by 5am PST Thursday. Winds are expected to remain here through most of Thursday, decreasing in the afternoon to gusts below 20 kts. Seas at buoys 89, 29, and 50 were observed around 18-19 ft around 16 seconds as of 9pm PST. Guidance remains consistent that significant wave heigheights are likely to continue rising over the next few hours, peaking around 20 to 24 ft tonight, with a period of around 16 seconds. Seas will likely subside slowly, eventually falling into the mid- teens by Thursday evening. The Hazardous Seas Warning remains in effect through 10pm Thursday. Seas are not expected to fall below 10 ft until Friday afternoon. High pressure settles over the area on Friday while south to southeasterly winds develop across the waters. -DH/03 .BEACH HAZARDS...High surf conditions are expected through Thursday afternoon as a long-period northwesterly swell arrives, bringing breakers up to 25 to 27 ft within the surf zone. A High Surf Advisory has been issued to cover this threat. Destructive waves may wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Minor beach erosion may damage coastal properties and buildings. Higher than normal water run-up is expected on beaches and low-lying shoreline. Although high surf conditions ease Thursday night into Friday, a high threat of sneaker waves will remain a threat for several days thereafter. Waves may run further up the beach than normal. These waves can easily catch people off guard. Never turn your back to the ocean. Razor clammers should use extra caution. -10/23 NOAA Portland OR Office: Watches - Warnings - Advisories OR...High Surf Advisory until 4pm PST Thursday for ORZ101>103. Winter Storm Warning until 4pm PST Thursday for ORZ126>128. WA...High Surf Advisory until 4pm PST Thursday for WAZ201. Winter Storm Warning until 4pm PST Thursday for WAZ211. PZ...Hazardous Seas Warning until 4pm PST Thursday for PZZ210. Hazardous Seas Warning until 10pm PST Thursday for PZZ251>253- 271>273. |
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