775 FXUS66 KPQR 020334 AAA AFDPQR Area Forecast Discussion Weather Service Portland OR 825 PM PDT Sat Jun 1 2019 .SYNOPSIS...High pressure building over the region means fewer clouds and warm weather. Expect gradually increasing morning clouds and cooler temperatures next week, and a chance for rain returning later next week. && .SHORT TERM...Tonight through Tuesday...The isolated convection over the Lane County Cascades has completely dissipated. Otherwise, there are marine clouds hugging the coastal strip and western portions of the Columbia River lowlands, and scattered-to-broken high clouds moving from north to south over the area. The seasonal early June weather will continue through the weekend, with no changes in the forecast. The remainder of the short and long term discussions are unchanged. DRB Overnight tonight into Sunday morning expect a similar surge of marine clouds into the Coast Range and down the Columbia River into Portland like we saw this morning. Everywhere else inland should stay clear. Tomorrow, high pressure will solidly be in place over NW Oregon and SW Washington. With higher pressure on the west side of the Cascades and relatively lower pressure east of the Cascades, we will see greater onshore flow starting tomorrow which should keep high temperatures a couple degrees cooler. Monday, a shortwave trough rides overtop the ridge over the region, flattening the ridge somewhat, increasing morning cloud cover and cooling high temperatures a few degrees more on Monday. The ridge remains flat through Tuesday, but the surface high should be positioned for weak offshore flow, decreasing morning cloud cover along the central coast. Temperatures remain cooler due to stronger onshore flow persisting into Tuesday. .LONG TERM...Tuesday night through Saturday: Pretty good agreement in the medium range mode runs covering through the end of the forecast period. Broad ridging under SW flow aloft will start to give way to a more persistent trough over the region beginning Wednesday. Each day will have a chance of showers, but no period seems to bring anything close to a soaking rain event. Additionally, persistent onshore flow and the cooler air aloft will result in daytime temperatures running 3-7 degrees below normal. Overall, decided to give the National Blend of Models (NBM) a chance at this forecast since the synoptic pattern doesn't vary much and this time range still quite a ways out for the details to shake out. /JBonk && .AVIATION...Inland areas should be VFR next 24 hours with the exception of the KPDX area where MVFR ceilings are likely to redevelop and then dissipate again between 12Z and 18Z Sunday. On the coast, stratus is expected to be rather persistent next 24 hours, with ceilings remaining in the IFR to low end MVFR range. There is a chance however for temporary VFR conditions on the coast at most any time, with the central Oregon coast having the best chances for seeing the clouds break up at times. KPDX AND APPROACHES...VFR next 24 hours, except a period of MVFR ceilings becomes likely around 13Z Sunday morning as status redevelops, and then dissipates again quickly around 18Z. && .MARINE...Not a lot of change over the next few days as high pressure remains over the NE Pacific and a trough of low pressure along the northern California and southern Oregon coast drives gusty northerly winds over the coastal waters. Winds gusting 20 to 30 kt Saturday evening are expected to gradually weaken through Sunday morning. Winds will not be quite as strong on Sunday as a weak front approaches, weakening the NE Pac high and decreasing the pressure gradient, although models continue to show some gusts above 20 kt. Will extend the small craft advisory for winds a few more hours into Sunday morning for the southern waters, but then keep it cut off as confidence remains low for seeing many gusts over 20 kt Sunday afternoon and evening. This general pattern will persist through the early part of next week, with winds becoming gusty during the afternoon and evening hours. A couple of weak low pressure systems may move through the waters during the second half of next week. The gusty northern winds will generate locally steep wind waves of 5 to 7 feet through tonight. Seas will generally remain in the 5 to 7 ft range through the first half of next week, and are likely to be rather steep during times of gustier winds. && .PQR WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. PZ...Small Craft Advisory for winds until 1 AM PDT Sunday for Coastal Waters from Cape Shoalwater WA to Cascade Head OR out 60 NM. Small Craft Advisory for winds until 10 AM PDT Sunday for Coastal Waters from Cascade Head OR to Florence OR out 60 NM. && $$ Interact with us via social media: www.facebook.com/NWSPortland www.twitter.com/NWSPortland This discussion is for Northwest Oregon and Southwest Washington from the Cascade crest to 60 nautical miles offshore. This area is commonly referred to as the forecast area.