Here is my weekly weather quiz question for the last time. What is  “Staccato Lightning?” Here is the correct answer. Staccato Lightning is a Cloud to Ground (CG) lightning discharge which appears as a single very bright, short-duration stroke, often with considerable branching. I’ll have a new 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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A broad upper level High Pressure Ridge (Shaded “Arch” shape with blue arrows) will keep us in a hot easterly airflow into Monday. It is possible some areas will see high temperature records broken today. A frontal system (position shown is Wednesday) will be pushing through the Pacific Northwest Tuesday and Wednesday giving us at least a slight chance of showers starting Wednesday.

Note: In this high heat situation please remember to drink plenty of water, stay where it is cool if possible, use sunscreen and remember to have plenty of cool water for your outdoor pets.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 37 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 24 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

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

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Advisories:

• AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR  THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OEGON, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, AND THE UPPER HOOD RIVER VALLEY.
• A HEAT ADVISORY IS IN EFFECT  UNTIL 9 PM TONIGHT FOR THE NORTHERN OREGON CASCADE FOOTHILLS  AND THE CASCADE FOOTHILLS IN LANE COUNTY.
• A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR CENTRAL DOUGLAS COUNTY AND THE EASTERN DOUGLAS COUNTY FOOTHILLS.
• A HEAT ADVISORY IS IN EFFECT UNTIL 8 PM MONDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY,  THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES AND THE SISKIYOU MOUNTAINS.
• A FLASH FLOOD WATCH IS IN EFFECT FROM 2 PM THIS AFTERNOON THROUGH THIS EVENING FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS AND THE KLAMATH BASIN.

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

• Partly cloudy this AM, mostly sunny and not quite as hot but still very warm this afternoon, partly cloudy tonight,
• A mix of clouds and sun Monday AM, mostly sunny and a bit cooler in the afternoon, partly cloudy Monday night through Tuesday evening, then mostly cloudy late Tuesday night.
• highs 90-85 lows 58-53.
• A mix of clouds and sun and a bit cooler Wednesday with a slight (20%) chance of showers in the afternoon, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of showers late Wednesday night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Thursday and in the evening, a (30%) chance of showers late Thursday night,
• A mix of clouds and sun with a (40%) chance of showers Friday, mostly cloudy with a (40%) chance of showers late at night,
• A (30%) chance of AM showers, then a mix of clouds and sun with a slight (20%) chance of showers Saturday.
• highs 73-67 lows 52-49. (seasonal averages high 70 low 46.)

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Eugene-Springfield Pollen Count:

Grass………. Very High (233)

Trees………. Moderate (51)

Last Counted: 6/3/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Partly cloudy with a slight (20%) chance of thunderstorms today and this evening, just partly cloudy late tonight,
• AM clouds, mostly sunny and a bit cooler Monday afternoon, partly cloudy with a slight (20%) chance of thunderstorms Monday through Tuesday night.
• highs 96-92 lows 60-57.
• Mostly cloudy with a (30%) chance of showers and a slight (20%) chance of thunderstorms and a bit cooler Wednesday and Wednesday night,
• Mostly cloudy with a slight (20%) chance of showers Thursday AM, partly cloudy with a slight (20%) chance of showers in the afternoon, partly cloudy with a (30%) chance of showers in the evening, mostly cloudy with a (30%) chance of showers at night,
• Mostly cloudy with a (40%) chance of showers Friday and Friday night,
• Then mostly cloudy with a slight (20%) chance of showers Saturday.
• highs 79-69 warming to 72 Saturday lows 54-48. (seasonal averages high 74 low 50).

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

• Mostly cloudy with patchy coastal fog this AM while partly cloudy with a slight (20%) chance of inland thunderstorms this AM, mostly cloudy with a slight (20%) chance of inland thunderstorms this afternoon (under 0.10 in. of rain possible, heavy rain possible), becoming partly cloudy this evening, mostly cloudy late tonight,
• AM clouds, mostly sunny Monday, partly cloudy in the evening, mostly cloudy Monday night and Tuesday AM, partly cloudy with a slight (20%) chance of thunderstorms in the afternoon, then mostly cloudy with a slight (20%) chance of showers late Tuesday night.
• highs near 65 lows near 55.
• Mostly cloudy with a (30%) chance of showers Wednesday and Wednesday night,
• Mostly cloudy with a slight (20%) chance of showers Thursday AM, partly cloudy and a bit cooler with a (30%) chance of showers Thursday afternoon, mostly cloudy with a (30%) chance  of showers Thursday night through  Friday night,
• Then mostly cloudy with a slight (20%) chance of showers Saturday.
• highs 65-59 lows 52-50. (seasonal averages high 61 low 50)

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Forecast for the Cascades in Lane County:

• Partly cloudy with a slight (20%) chance of showers and thunderstorms today and tonight,
• A mix of clouds and sun and cooler with a slight (20%) chance of showers and thunderstorms Monday afternoon, partly cloudy with a slight (20%) chance of showers and thunderstorms at night and Tuesday, mostly cloudy with a slight (20%) chance of showers and thunderstorms in the evening, then just partly cloudy late at night.
• snow level above 8,000 ft. today through Tuesday night.
• highs 85-78 lows 56-46.
• A mix of clouds and sun and a bit cooler Wednesday with a (40%) chance of showers and a slight (20%) chance of thunderstorms in the afternoon and evening, mostly cloudy with a slight (20%) chance of showers late Wednesday night,
•  A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Thursday, partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a (30%) chance of showers late Thursday night,
• A mix of clouds and sun with a good (50%) chance of showers Friday, partly cloudy with a good (50%) chance of showers Friday night,
• A (30%) chance of AM showers, then a mix of clouds and sun with a slight (20%) chance of showers Saturday afternoon.
• snow level above 8,000 ft. Wednesday and Wednesday night, 7,000 ft. Thursday and Thursday night, 6,500 ft. Friday, 7,500 ft. Friday night, then 8,000 ft. Saturday.
• highs 65-54 lows 42-35.

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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 and Lane County news on-line at eugenedailynews.com.

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