Here is my weekly weather quiz question for the last time. What is a “Short-fuse Warning?” Here is the correct answer. A Short-Fuse Warning is a warning issued by the NWS for a local weather hazard of relatively short duration. Short-fuse warnings include tornado warnings, severe thunderstorm warnings, and flash flood warnings. Tornado and severe thunderstorm warnings typically are issued for periods of an hour or less, flash flood warnings typically for three hours or less. I’ll have a new weekly weather quiz question for you 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.

________________

An upper level low (Shaded “U” shape with blue arrows) has brought the chance of showers and thunderstorms back. It’s a bit like a roller coaster as high pressure (Shaded “Arch” shape with blue arrows) returns Monday. By mid-week low pressure returns. By Wednesday a frontal system approaches the Pacific Northwest from the northwest increasing our rain chances.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 26 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories: None At This Time.

________________

Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is Allowed.

Oakridge: GREEN – Burning is Allowed.

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

Advisory Courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

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

• Cloudy with a good (50%) chance of showers tonight (0.10 in. of rain possible) and a bit cooler Sunday (0.10 in. of rain possible), mostly cloudy with a good (50%) chance of showers Sunday night,
• A mix of clouds and sun Monday with a slight (20%) chance of AM showers, mostly sunny and a bit warmer in the afternoon, just partly cloudy and colder Monday night,
• Mostly sunny and a bit warmer Tuesday, then partly cloudy Tuesday night.
• lows 49-44 warming to 48 Tuesday night highs 62-73.
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Wednesday afternoon, becoming mostly cloudy with a slight (20%) chance of evening showers, a good (50%) chance of showers late Wednesday night,
• Cloudy and cooler with a good (50%) chance of showers Thursday through Friday night,
• Then mostly cloudy with a (40%) chance of showers Saturday.
• highs 72-62 lows 48-46. (seasonal averages high 67 low 43.)

_____

Eugene-Springfield Pollen Count:

Grass………. High (69)

Trees………. Moderate (75)

Last Counted: 5/12/16

Data Courtesy of Oregon Allergy Associates.

___________________

Forecast for Roseburg:

• Cloudy with a (40%) chance of showers tonight (under 0.10 in. of rain possible),
• Cloudy with a good (50%) chance of showers and a bit warmer Sunday (under 0.10 in. of rain possible), mostly cloudy with a (30%) chance of showers Sunday night,
• A slight (20%) chance of showers Monday AM, just mostly cloudy and a bit warmer in the afternoon, partly cloudy late Monday night and Tuesday AM, sunny and warmer in the afternoon, mostly clear in the evening, then mostly cloudy late Tuesday night.
• lows 52-48 warming to 50 Tuesday night highs 65-79.
• Mostly cloudy and a bit cooler with a slight (20%) chance of isolated showers Wednesday, scattered showers Wednesday night,
• Cloudy and cooler with a good (50%) chance of showers and a bit cooler Thursday and Thursday night and Friday, then mostly cloudy with scattered showers Friday night and Saturday.
• highs 77-64 lows 50-47. (seasonal averages high 70 low 47).

________________

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

• Cloudy with a (30%) chance of showers tonight (under 0.10 in. of rain possible) through Sunday night,
• Cloudy and a bit warmer Monday with a slight (20%) chance of AM showers, mostly clear in the evening, then partly cloudy Monday night through Tuesday night.
• lows 52-50 warming back to 52 Tuesday night highs 60-65.
• Mostly cloudy with a slight (20%) chance of isolated showers and a bit cooler Wednesday, scattered showers Wednesday night through Friday night,
• Then cloudy a with a good (50%) chance of scattered showers Saturday.
• highs near 60 lows near 50. (seasonal averages high 59 low 47)

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with showers likely (70%) and a slight (20%) chance of thunderstorms this evening,  showers likely (70%) and colder late tonight (0.25 in. of rain possible, more in storms),
• Cloudy with a good (50%) chance of showers Sunday AM, showers likely (70%) and a bit cooler Sunday afternoon and in the evening, a good (50%) chance of showers late Sunday night (0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of showers Monday AM, partly cloudy with a slight (20%) chance of afternoon showers and a bit warmer, just partly cloudy at night,
• Mostly sunny and a bit warmer Tuesday, then partly cloudy Tuesday night.
• snow level 7,500 ft. tonight, 6,500 ft. Sunday, 7,000 ft. Sunday night, 7,500 ft. Monday, free air freezing level 10,000 ft. Monday night, 11,000 ft. Tuesday, then  12,000 ft. Tuesday night.
• lows 38-36 warming to 40 Tuesday night highs 46-64.
• A mix of clouds and sun and a bit cooler with a (30%) chance of showers Wednesday afternoon, mostly cloudy with a good (50%) chance of showers Wednesday night and Thursday AM, rain and snow showers likely (70%) and cooler Thursday afternoon through Friday evening, then mostly cloudy with a good (50%) chance of rain and snow showers late Friday evening and Saturday.
• snow level above 8,000 ft. Wednesday and Wednesday night, 6,000 ft. Thursday, 5,000 ft. Thursday night, 4,500 ft. Friday, 5,000 ft. Friday night, then 5,500 ft. Saturday.
• highs 62-45 warming to 47 Saturday lows 35-32.

________________

**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.

________________

Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

________________