Here is my weekly weather quiz question for the last time. What are “Iridescent Clouds? Here is the correct answer. Iridescent Clouds are clouds that exhibit brilliant bright spots, bands, or borders of colors, usually red and green, observed up to about 30 degrees from the sun. The coloration is due to the diffraction with small cloud particles producing the effect. It is usually seen in thin cirrostratus, cirrocumulus, and altocumulus clouds.

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The Upper Level Airflow is sending moisture west to east straight into the Pacific Northwest. The graphics for days 1-3 show the next frontal system headed our way tonight and Monday.  The graphics for days 3-7 show more complex frontal systems moving our way Wednesday through next Sunday giving us more chances of getting wet.

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Air Quality Index:

Eugene/Springfield: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 53 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 27 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

NOTE: Outdoor burning season has now officially opened. The ban has been lifted.

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ADVISORIES:

• None at This Time.

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with evening rain likely (70%), a good (50%) chance of late evening rain, rain late tonight (0.50 in. of rain possible),
• Mostly cloudy with rain and a bit cooler Monday (1.00 in. of rain possible), evening rain likely (70%), partly cloudy a good (50%) chance of rain and snow and colder Monday night (0.10 in. rain possible, little or no snow accumulation expected),
• Mostly cloudy with a good (50%) chance of AM rain and snow (no snow accumulation expected), a good (50%) chance of rain and a bit cooler Tuesday afternoon (under 0.10 in. of rain possible), a good (50%) chance of rain Tuesday night, (under 0.10 in. of rain possible, no snow accumulation expected),
• Clouds and sun with a good (50%) chance of AM rain and snow (snow level 1,500 ft.), a mix of clouds and sun and a bit warmer with a good (50%) of rain Wednesday afternoon, then just partly cloudy Wednesday night.
• lows 44- 30 warming to 33 Tuesday night cooling to 28 Wednesday night highs 52-47 warming to 50 Wednesday.
• Partly cloudy and a bit warmer Thursday and Thursday night,
• Mostly cloudy with slight (20%) chance of AM rain, a bit cooler with a (40%) chance of showers Friday, a good (50%) chance of rain Friday night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain Saturday, rain likely (70%) Saturday night,
• Then mostly cloudy and a bit cooler with rain Sunday.
• highs 58-55 warming to 57 Saturday cooling to 52 Sunday lows 32-40. (seasonal averages high 56 low 37)

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Home Wood Heating Advisory:

Posted Daily

Eugene-Springfield: GREEN– Burning is Allowed.

Oakridge: GREEN– Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPAz

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Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with a good (50%) chance of evening rain, late evening rain likely (70%) becoming rain late tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with rain Monday (0.50 in. of rain possible, afternoon snow level 2,500 ft.), a (30%) chance of rain and snow and colder Monday night (0.10 in. of rain possible, snow level 1,500 ft. falling to 1,000 ft. late Monday night),
• Mostly cloudy with a slight (20%) chance of AM rain and snow, rain likely (70%) and a bit cooler Tuesday afternoon (0.25 in. of rain possible) and evening, rain and snow likely (70%) late at night (under 0.10 in. of rain possible),
• Mostly cloudy with a (30%) chance of AM rain and snow, partly cloudy and a bit warmer with a slight (20%) chance of  rain Wednesday afternoon, then mostly clear Wednesday night.
• lows 47-34 warming to 36 Tuesday night cooling to 30 Wednesday night highs 54-48 warming to 52 Wednesday.
• Partly cloudy and a bit warmer Thursday and in the evening, mostly cloudy with a slight (20%) chance of rain late Thursday night,
• Mostly cloudy and a bit cooler with a (40%) chance of rain Friday and at night,
• Mostly cloudy and a bit warmer with a (40%) chance of rain Saturday, rain likely (70%) Saturday night,
• Then mostly cloudy and a bit cooler with rain Sunday.
• highs 59-56 warming back to 59 Saturday cooling to 53 Sunday lows 36-42. (seasonal averages high 58 low 39)

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with a good (50%) chance of evening rain, rain likely (70%) becoming rain late tonight (0.25 in. of rain possible, snow level 2,000 ft.),
• Mostly cloudy and a bit cooler with rain Monday (1.00 in. of rain possible) and breezy (Wind: SW 15-25 mph decreasing and shifting to W 10-15 by late morning), a good (50%) chance of coastal rain at night while a good (50%) chance of inland rain and snow Monday night (0.10 in. of rain possible),
• Mostly cloudy and a bit cooler and breezy Tuesday (Wind: SW 15-25 mph decreasing and shifting to W 10-15 by late morning), a good (50%) chance of rain Tuesday night (under 0.10 in. of rain possible, snow level 2,000 ft. late at night),
• Mostly cloudy with a (40%) chance of AM rain, becoming mostly sunny with a (30%) chance of rain and a bit warmer Wednesday afternoon, then just mostly clear Wednesday night.
• lows 40-30 warming to 34 Tuesday night highs 53-50 warming to 52 Wednesday.
• Partly cloudy and a bit warmer Thursday and in the evening, mostly cloudy with a slight (20%) chance of rain late Thursday night,
• Mostly cloudy with a good (50%) chance of rain and a bit cooler Friday, a good (50%) chance of rain at night,
• Mostly cloudy with a good (50%) chance of rain Saturday, rain likely (70%) Saturday night,
• Mostly cloudy with AM rain, then rain likely (70%) and a bit cooler Sunday afternoon.
• highs 58-52 lows 37-39. (seasonal averages high 55 low 42)

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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:

• Mostly cloudy with rain and snow tonight (0.50 in. of rain possible, 1-3 in. of snow possible).
• Mostly cloudy with AM snow likely (70%) and rain, rain and snow and a bit cooler Monday afternoon (1.00 in. of rain possible, 4-8 in. of snow possible) and breezy (Wind: S 15-25 mph gusts to 45 mph decreasing and shifting to SW 15-20 mph gusts to 40 mph in the afternoon), evening snow likely (70%), (snow possibly heavy at times), evening snow likely (70%), colder with a good (50%) chance of of snow late Monday night (1-4 in. of snow possible),
• Mostly cloudy with a good (50%) chance of AM snow, rain and snow likely (70%) a bit cooler Tuesday afternoon (1-4 in. of snow possible), evening rain and snow likely (70%), snow likely (70%) late at night (2 in. of snow possible),
• Clouds and sun with AM snow likely (70%), a mix of clouds and sun with a good (50%) chance of snow and a bit cooler Wednesday afternoon, then becoming mostly clear late Wednesday night.
• snow level 5,500 ft. tonight, 5,000 ft. falling to 3,500 ft. Monday afternoon, 2,500 ft. Monday evening, 2,000 ft. rising to 4,000 ft. Tuesday afternoon, 3,500 ft. falling to 2,500 ft. Tuesday night, 2,000 ft. rising to 2,500 ft. Wednesday afternoon, free air freezing level 4,500 ft. falling to 3,500 ft. late Wednesday night.
• lows 34-22 highs 39-35.
• Mostly sunny and a bit warmer Thursday, partly cloudy Thursday night,
• A mix of clouds and sun and a bit cooler with a good (50%) chance of rain and snow Friday, mostly cloudy with evening rain and snow likely (70%), a good (50%) chance of rain and snow late Friday night,
• A mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow Saturday, rain and snow likely (70%) Saturday night,
• Then mostly cloudy and a bit cooler with rain and snow Sunday,
• free air freezing level 3,500 ft. rising to 5,500 ft. Thursday, 7,000 ft. falling to 5,000 ft. late Thursday night, 3,000 ft. rising to 4,500 ft. Friday afternoon, snow level 4,500 ft. falling to 4,000 ft. late Friday night, 4,000 ft. rising to 4,500 ft. Saturday afternoon, 5,000 ft. falling to 4,500 ft. late Saturday night, then 4,000 ft. Sunday.
• highs 34-40 lows 19-27 cooling to 24 Friday night.

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For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com

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