Cape Lookout to Florence OR between 150 and 250 NM Offshore Forecast
| Today...S To Se Winds 30 To 40 Kt. Seas 14 To 24 Ft. Chance Of Rain. |
| Tonight...W To Sw Winds 25 To 35 Kt, Becoming 25 To 30 Kt. Seas 14 To 22 Ft. Scattered Showers. |
| Fri...W Winds 20 To 30 Kt. Seas 15 To 20 Ft. Scattered Showers. |
| Fri Night...W Winds 15 To 25 Kt. Seas 12 To 16 Ft. Scattered Showers. |
| Sat...W Winds 10 To 15 Kt, Becoming S To Sw 5 To 15 Kt. Seas 8 To 12 Ft. |
| Sat Night...S To Se Winds 10 To 15 Kt, Becoming Se 15 To 25 Kt. Seas 6 To 8 Ft. |
| Sun...Se Winds 15 To 25 Kt. Seas 6 To 9 Ft. |
| Sun Night...Sw Winds 20 To 30 Kt. Seas 8 To 11 Ft. |
| Mon...Sw Winds 15 To 25 Kt. Seas 10 To 12 Ft. |
| Mon Night...Sw Winds 10 To 20 Kt, Becoming Variable Less Than 10 Kt. Seas 10 To 13 Ft. |
|
Area Forecast Discussion National Weather Service Portland OR 330am PDT Thu Mar 27 2025 Synopsis Active weather will continue through Saturday, with cool, near normal temperatures and persistent showers across the forecast area. Saturday night into Sunday and brief break is expected in the precipitation. However, this will be short lived as a broad area of low pressure will bring a return of rain and light Cascade snow late Sunday night/Monday which will persist through the middle of the upcoming week. .SHORT TERM...Now through Saturday...Today is looking to be significantly calmer when compared to yesterday. Cool, near seasonal temperatures along with persistent showers will bring a very "spring like" feel across the CWA. The cause of the precipitation and cooler temperatures remains the low, which was the cause for all the "excitement" yesterday. This low will finally stop being the dominant synoptic feature by Saturday. However, before this low moves out of the region, it will send a few embedded shortwaves across the Pacific NW and these shortwaves will keep the region inundated with showery precipitation. A brief pattern change is on deck come late Saturday/Sunday as a shortwave ridge will bring drier conditions, will go into this more in the Long Term discussion below. Now, daytime highs today will be in the upper 50s to low 60s inland, with the coast, coast range and Cascades remaining in the 50s. Friday and Saturday, will be cooler as the back in of the low will usher in cooler 850 mb temperatures around -2C to 0C. This will result in daytime highs cooling off by about 5 to 10 degrees across the CWA. At this time, daily high records are in the upper 70s to low 80s. So, no current concern for any record-breaking heat through the weekend and into the start of next week. As mentioned above, precipitation today will be showery in nature and while CAMs (Convective Allowing Models) are showing CAPE values around 100-250 J/kg. CIN values around 8-12 J/kg is typically enough to quell thunderstorm development. However, will keep a slight chance of thunderstorms (10-20% probability) in the forecast. The reason for keeping a slight chance of thunderstorms in the forecast is that the favorable southerly flow pattern and intermittent cloud cover expected, could be just enough for some pop-corn thunderstorms to manifest this afternoon and could persist into the evening. This is also supported by model soundings that are showing some potential for relatively shallow convection along the Cascades and within the Willamette Valley. As the aforementioned low meanders northward, southerly gusts will increase across the CWA. However the overall probability of strong winds has decreased. with only a 10-30% probability for occasional southerly gusts up to 45 mph for areas from Salem southward through today. The coast has a 20-30% probability for southerly gusts up to 55 mph through today as well. We will continue to monitor the forecast. /42 Long Term Saturday night through Thursday... As mentioned above, a brief pattern change is on deck come late Saturday/Sunday as a shortwave ridge will bring drier conditions and slightly warmer conditions on Sunday. However, this will be very short-lived as a broad area of low pressure from the Gulf of Alaska and NE Pacific will bring another round of spring showers and seasonal temperatures to the region through the middle of the upcoming week. As for precipitation, expect rain for the lower elevations and light snow for the Cascades. /42 Marine There remains high confidence that a strong area of low pressure will bring much higher winds and seas across the waters today. Gale Force winds have been observed in the outer waters south of Cape Falcon since late Wednesday night, with a Gale Warning in effect. Storm force winds are likely to begin around 5-8am in this area, with wind gusts up to 50 kt expected. A Storm Warning is in effect through 5 PM. Elsewhere, including the Columbia River Bar, Gale Force gusts up to 40-45 kt are likely beginning around 5-8 AM. A Gale Warning is in effect through Friday afternoon. Seas will also rapidly increase today, becoming steep and hazardous with significant wave heigheights most likely peaking between 20-25 feet late this morning into early afternoon. Hazardous seas 15-20 feet will persist through Friday afternoon. Winds and seas are expected to fall for Saturday and Sunday with wind gusts below 20 kts and seas around 7-10 feet at 10-12 seconds. Another weather system is slated to move through the waters late Sunday into Monday with a 50-60% chance of Gale Force wind gusts once again. -HEC .BEACH HAZARDS...Beachgoers and those participating in the upcoming razor clam digs should be aware of a moderate risk of sneaker waves most of this week. Be sure to never turn your back to the ocean and keep a close eye on incoming waves, as sneaker waves can catch beachgoers by surprise, sometimes resulting in injury or death. Avoid jetties, large logs, and large rocks. Elevated surf conditions are expected Thursday into Friday with wave heigheights potentially exceeding 25 ft, however much of the surf energy will be directed along-shore given the southwesterly swell direction. This will limit surf impacts to area beaches. Forecast surf energy is currently below criteria for the issuance of a high surf advisory. Lastly, there is a chance of marginal tidal overflow flooding along the south WA coast around high tide Friday morning. As of right now, the total tide forecast at Toke Point, WA is forecast to reach 11.0 feet for one hour. Typically, flooding impacts do not occur unless the total tide exceeds 11 feet for a few hours. Therefore, have decided not to issue a coastal flood advisory, but this could change if the total tide forecast increases with future forecast updates. -TK/HEC NOAA Portland OR Office: Watches - Warnings - Advisories OR...None. WA...None. PZ...Gale Warning until 5pm PDT Friday for PZZ210-251-271. Gale Warning until 5pm PDT Friday for PZZ252-253. Gale Warning until 8am PDT this morning for PZZ272-273. Gale Warning from 5pm this afternoon to 5pm PDT Friday for PZZ272-273. Storm Warning from 8am this morning to 5pm PDT this afternoon for PZZ272-273. |
Portland OR Radar
Northwest Radar