Cascade Head to Florence, OR out 10 NM Marine Forecast
| Tonight...N Wind 5 Kt. Wind Waves N 1 Ft At 4 Seconds. W Swell 3 Ft At 11 Seconds. Brief Light Showers. |
| Mon...Nw Wind 5 To 10 Kt, Rising To 10 To 15 Kt In The Afternoon. Wind Waves Nw 1 Ft At 4 Seconds. W Swell 3 Ft At 10 Seconds. |
| Mon Night...N Wind 10 To 15 Kt With Gusts To 20 Kt. Wind Waves N 3 Ft At 5 Seconds. W Swell 4 Ft At 10 Seconds. |
| Tue...N Wind 5 To 10 Kt. Gusts To 15 Kt In The Morning. Wind Waves N 1 Ft At 4 Seconds. W Swell 3 Ft At 9 Seconds. |
| Tue Night...N Wind 5 Kt, Backing To Sw After Midnight. Wind Waves N 1 Ft At 4 Seconds, Shifting To The Sw At 4 Seconds After Midnight. W Swell 2 Ft At 8 Seconds. |
| Wed...Sw Wind 5 Kt. Wind Waves 1 Ft. W Swell 3 Ft. |
| Wed Night...N Wind 5 To 10 Kt With Gusts To 15 Kt. Wind Waves 2 Ft. W Swell 5 Ft. |
| Thu...Sw Wind 10 To 15 Kt. Wind Waves 2 Ft. W Swell 4 Ft. |
| Fri...W Wind 5 To 10 Kt. Wind Waves 2 Ft. W Swell 5 Ft. |
| Area Forecast Discussion National Weather Service Portland OR 301pm PDT Sunday May 22 2022 Synopsis Weak system passing across region tonight, with some spotty sprinkles. But, mainly, the front will bring little cooler weather with bit more onshore flow for Monday and Tuesday. Best day of the week (for warm and sunny weather likers) will be Wednesday, with highs inland into the middle 70s. But, another front will push into the region on Thursday, with spotty rain later in the day into Thursday night. A bit cooler yet for Friday, with showers. Cool, unsettled weather continues into the coming holiday weekend. .SHORT TERM...(tonight through Wednesday)...Rather pleasant afternoon, with temperatures in the 50s to lower 60s along the coast, and lower 70s farther inland. Approaching front well offshore is pushing mid and high clouds into the region this afternoon. Clouds will continue to thicken this afternoon into the evening. Bulk of the precipitation with the front will be to our north across western Washington and southern British Columbia. But, with still close enough to warrant some minor Probability of Precipitation for the southwest WA and far north OR coast. Will keep 20 to 30 Probability of Precipitation for those areas. Otherwise, worst case appears to be some occasional sprinkles over rest of the area overnight, mainly along the coast, and inland north of Salem. Main effect from this system will be the enhanced onshore flow for Monday. As such, will see clouds hold on longer into the day, then gradually break up through the mid to late afternoon. Will be cooler, with highs staying in the 50s along the coast, and 60s for interior lowlands. Onshore pressure gradients will tighten, enough to bring breezy west to northwest winds to the higher ridges of the Cascades, Willapa Hills, Coast Range, and even through the Columbia Gorge. Gusts to east of Cascade Locks generally 25 to 35 mph in spots for Monday afternoon into the evening. Onshore flow weakens on Tuesday, but still enough to maintain areas of morning low clouds along the coast, and interior valleys. Still on cooler side, with 50s to lower 60s on coast, and mid to upper 60s well inland. But, best day of the week, at least for those that want mild sunny weather) looks to be Wednesday. High pressure ridge will push over the region, with increasing clouds later in the day. But, with light winds and good deal of sunshine, highs should reach back into the 60s on the coast, and mid 70s for the interior lowlands /Rockey Long Term (THURSDAY THROUGH MONDAY)... Mild weather continues into Thursday. But, will see a shift in the pattern as clouds will increase along the leading edge of a weakening front. The front will push across the region on Thursday, with some spotty rain possible - mainly pre-frontal showers. But, the big player in the long term arrives late Thursday into Friday. A closed low aloft, stemming from the Gulf of Alaska, will make its way southward extending a negatively tilted trough over the region. This low is wrapped in cooler air from the north and it will be advected over the region. As of late, models have come into better agreement, especially in regards to Quantitative Precipitation Forecast. The ECMWF (European Centre for Medium-Range Weather Forecasts) has backed off of the storm total Quantitative Precipitation Forecast while the GFS has increased. Because conditions are ever shifting, not settling on any numbers as of right now. This front is slower moving with a few shortwaves passing over the region sequentially. This means that we could see some showers and cooler than normal temperatures persisting through the coming Memorial Day weekend. MuesslRock Marine A series of weakening fronts will ride up and over the persistent high pressure offshore through mid week. This will result in generally light winds, however speeds should increase near advisory levels Monday late afternoon and early evening with the passage of one of the weakening fronts. A stronger front, agreed upon by ensemble members and the deterministic Canadian and GFS, will push in Thursday with southwesterly winds increasing, likely near or above Small Craft Advisory period. Seas will remain relatively tame through the next several days as a modest 3-5 ft W swell moves through the waters, with little short period contribution given the generally light winds. /Kriederman NOAA Portland OR Office: Watches - Warnings - Advisories OR...None. WA...None. PZ...None. |
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