National Weather Service Area Forecast Discussion for Long Beach, WA USA
879 fxus66 kpqr 142148 cca afdpqr Area Forecast Discussion National Weather Service Portland, OR or 248 pm pdt wed may 14 2025 .synopsis...a progressive weather pattern will bring periods of light rain through the weekend, and possibly into early next week. expect temperatures to remain slightly below average as well. dry conditions expected tonight through thursday morning, followed by light, steady rain as a weak front moves across the area later thursday. rain showers increase late friday night through saturday, along with a 10-20% chance of thunderstorms sat afternoon. lingering showers into sunday, though most areas likely drier. && .discussion...tonight through wednesday...cool and cloudy weather continues over the next week as the progressive weather pattern persists across the pacific northwest. a few lingering showers over the cascades this evening will dissipate as high pressure briefly builds as a transient shortwave ridge moves over the region tonight. overnight temperatures expected to cool into the lower 40s, with a few rural locations falling into the upper 30s. dry weather will likely persist through thursday morning, before a weak front brings more steady, albeit light, rain to the area into thursday night. rainfall amounts generally expected to be around a tenth of an inch or less. onshore flow persists into friday with mostly cloudy skies expected to maintain below average temperatures for mid-may, with afternoon highs mainly warming into the lower to mid-60s inland, and mid to upper 50s along the coast. later friday, an upper level jet over the north pacific will nose onshore somewhere along the northern california/southern oregon coast. an associated shortwave trough will likely bring another round of showers to the area late friday through saturday, along with a 10-20% chance of thunderstorms saturday afternoon. another upper level disturbance drops south across the region late saturday, reinvigorating showers within the northwest flow aloft, and eventually becoming a closed low over the great basin late sunday. weekend rainfall amounts are expected to be be a bit more substantial, but will largely depend on where the strongest showers set up. latest guidance does suggest around a 25-45% chance for exceeding 0.25 inch across many lowland areas, while across the higher terrain, especially the western slopes of the cascades, are showing around a 50% chance of exceeding a half an inch of rain. ensemble clusters are in relatively good agreement that upper level ridging noses back into the pacific northwest by late sunday into monday. but, the strength of the ridge remains uncertain, with about a 50/50 chance of more zonal flow as upper level troughing rides more flattish ridging into the pacific nw. so, will maintain a chance of rain across the area through early next week. there is some indication of temperatures creeping back up to near normal toward the middle of next week. but, uncertainty looms on into the long range. /dh && .aviation...low vfr overcast deck remains in place around 5000-6000 ft agl, with continued clearing to a scattered vfr deck over the rest of wednesday afternoon. coastal terminals continue to see passing marine stratus, with 20-40% chance of occasional mvfr throughout the rest of wednesday afternoon. northwesterly flow continues, with gusts up to 15-20 kts possible at all terminals this afternoon. winds ease going into wednesday evening, and coastal terminals see around a 50-60% chance of mvfr conditions redeveloping over wednesday night around 11z thu. pdx and approaches...vfr conditions throughout the period, with a low vfr deck clearing to scattered clouds over the rest of wednesday afternoon. winds generally northwesterly, with occasional gusts to 15 kt possible throughout wednesday afternoon. winds ease going into wednesday evening. /jliu && .marine...seas currently around 7 feet at 9 seconds, and will continue falling going into thursday down to 5-7 ft. winds have fallen below small craft advisory criteria, and will continue to fall to around 10 kts by the end of wednesday night. winds turn southerly around 10-15 kts by thursday, continuing through the workweek. a reinvigorated northwest swell arrives with a frontal system on friday. southwest flow ahead of the front will will turn again out of the northwest in its wake, with a 20-40% chance of gale-force gusts beyond 30 nm through the weekend. -picard/jliu && .pqr watches/warnings/advisories... or...none. wa...none. pz...none. && $$ www.weather.gov/portland interact with us via social media: www.facebook.com/nwsportland x.com/nwsportland
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