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Sorry, no winner this week. Here is my weekly weather quiz question for the last time. What is the “Pacific Decadal Oscillation?” Here is the correct answer. “(Abbrev. PDO) The Pacific Decadal Oscillation – a recently described pattern of climate variation similar to ENSO though on a timescale of decades and not seasons. It is characterized by SST anomalies of one sign in the north-central Pacific and SST anomalies of another sign to the north and east near the Aleutians and the Gulf of Alaska. It primarily affects weather patterns and sea surface temperatures in the Pacific Northwest, Alaska, and northern Pacific Islands.” I’ll have another weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!
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Cold high pressure (shaded “Arch” shape) moves toward the Pacific Northwest. That ridge aloft along with high pressure (Blue “H”) at the surface will keep storm systems away from the Pacific Northwest for a while.
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Advisories: A FREEZE WARNING IS IN EFFECT FROM 1 AM UNTIL 9 AM SUNDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A FROST ADVISORY IS IN EFFECT FROM 1 AM UNTIL 9 AM SUNDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy this evening, mostly cloudy with patchy fog and freezing fog late tonight and Sunday AM, partly cloudy in the afternoon and evening, mostly cloudy with patchy fog and freezing fog Sunday night and Monday AM, partly cloudy in the afternoon and and evening, mostly cloudy with patchy fog and freezing fog late Monday night and Tuesday AM, partly cloudy in the afternoon, then mostly clear Tuesday night lows 20-28 highs 46-48 cooling to 46 Tuesday. Mostly cloudy with patchy AM fog and freezing fog, partly cloudy Wednesday afternoon, mostly clear at night and Thursday AM with fog and freezing fog again, mostly sunny Thursday afternoon, partly cloudy at night with patchy fog and freezing fog late and Friday AM, then just partly cloudy Friday afternoon through Saturday highs near 48 lows 30-35. (seasonal averages high 47 low 34)
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Forecast for the Umpqua Basin including Roseburg: Partly cloudy with patchy fog and freezing fog late tonight and Sunday AM, partly cloudy in the afternoon, partly cloudy with areas of patchy fog and freezing fog late Sunday night and Monday AM, mostly sunny Monday afternoon with patchy lingering fog, mostly clear with areas of patchy fog and freezing fog late Monday night and Tuesday AM, sunny in the afternoon with some lingering patchy fog, mostly clear with areas of patchy fog and freezing fog late Tuesday night lows 25-22 warming to 30 Tuesday night highs 39-48. AM fog and freezing fog, sunny with lingering patchy fog Wednesday afternoon and evening, clear with areas of patchy fog and freezing fog late at night and Thursday AM, mostly sunny with patchy lingering fog in the afternoon, lingering evening fog, mostly clear with patchy fog and freezing fog late Thursday night and early Friday AM, partly cloudy Friday with lingering patchy fog in the afternoon and evening, areas of fog and freezing fog again late Friday night and Saturday AM, then partly cloudy with patchy lingering fog Saturday afternoon highs 48-52 cooling to 48 Saturday lows 28-32. (seasonal averages high 49 low 36)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy at the shore this evening with clearing tonight while mostly cloudy inland, sunny Sunday AM, partly cloudy Sunday afternoon through Monday evening, mostly clear late Monday night, mostly sunny Tuesday, then mostly clear Tuesday night lows 29-38 cooling to 35 Tuesday night highs 45-52. Sunny Tuesday, Wednesday, and Thursday, then partly cloudy Thursday night through Saturday highs 54-50 lows near 36. (seasonal averages high 51 low 40)
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Forecast for the Cascades of Lane County: Partly cloudy tonight through Tuesday AM, mostly sunny in the afternoon, then mostly clear Tuesday night free air freezing level at the surface tonight through Monday AM rising to 3,500 ft. in the afternoon, 4,000 ft. Monday night, 8,000 ft. Tuesday, then 10,000 ft. Tuesday night lows 13-25 highs 26-42. Mostly sunny Wednesday, Thursday, and Friday, and Saturday with mostly clear to partly cloudy skies each night free air freezing level 10,000 ft. Wednesday through Thursday night, then 9,000 ft. Friday through Saturday highs 45-40 lows 25-22.
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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.
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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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