Here is my weekly weather quiz question. What are “Sastrugi?” 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.

________________

As the upper level low (Shaded “U” shape with blue arrows) to the south slides away to the east a high pressure ridge (Shaded “Arch” shape with blue arrows) takes over keeping the rain away for a while. A frontal system will be sliding through the Pacific Northwest  Sunday (position shown is Monday morning), but it looks dry and should only cool us off for Mother’s Day.

________________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 55 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

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

________________

Advisories:

• A FLASH FLOOD WATCH IS IN EFFECT THROUGH FRIDAY EVENING FOR CENTRAL, WESTERN AND EASTERN LAKE COUNTY, NORTHERN AND EASTERN KLAMATH COUNTY IN SOUTH CENTRAL OREGON.

________________

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:

• Mostly sunny and warmer this afternoon, mostly clear tonight,
• Sunny and warm Saturday, mostly clear in the evening, increasing clouds to mostly cloudy late Saturday night,
• Cloudy with a slight (20%) chance of AM drizzle or showers, a mix of clouds and sun and a bit cooler Sunday afternoon (Mother’s Day), partly cloudy in the evening, then mostly cloudy late at night.
• highs 78-67 lows 50-44.
• Partly cloudy Monday and Monday night.
• Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear Tuesday night, clear Wednesday night,
• Then sunny and a bit warmer Thursday.
• highs 67-82 lows near 46. (seasonal averages high 65 low 42.)

_____

Eugene-Springfield Pollen Count:

Grass………. Moderate (14)

Trees………. Moderate (35)

Last Counted: 5/05/16

Data Courtesy of Oregon Allergy Associates.

___________________

Forecast for Roseburg:

• Mostly cloudy and warmer with a slight (20%) chance of thunderstorms late this afternoon (small hail possible), partly cloudy with a slight (20%) chance of evening thunderstorms (small hail possible), just partly cloudy late tonight,
• Sunny and a bit warmer Saturday, mostly clear in the evening, mostly cloudy with patchy fog and drizzle late at night,
• AM clouds and fog with patchy drizzle, mostly cloudy and a bit cooler Sunday afternoon (Mother’s Day) and Sunday night.
• highs 78-82 cooling to 69 Sunday lows 52-44.
• AM clouds, mostly sunny Monday afternoon, mostly clear Monday night,
• Sunny and a bit warmer Tuesday and Wednesday and Thursday, mostly clear each night,
• highs 72-85 lows 45-52. (seasonal averages high 68 low 46).

________________

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

• Partly cloudy and a bit warmer today, partly cloudy tonight,
•  Partly cloudy Saturday AM, sunny and a bit cooler in the afternoon, mostly clear in the evening, mostly cloudy with patchy fog late Saturday night,
• AM clouds with patchy fog and drizzle, mostly cloudy and a bit cooler Sunday afternoon (Mother’s Day),  partly cloudy in the evening, mostly cloudy late Sunday night.
• highs 65-62 lows 52-48.
• AM clouds, mostly sunny Monday afternoon, mostly clear at night,
• Then sunny and warmer Tuesday, Wednesday and Thursday, clear each night.
• highs 63-73 lows 48-53. (seasonal averages high 58 low 46)

________________

Forecast for the Cascades in Lane County:

• A slight (20%) chance of showers early, a mix of clouds and sun with a slight (20%) chance of afternoon showers and thunderstorms partly cloudy with a slight (20%) chance of evening showers and thunderstorms, just partly cloudy late tonight,
• Mostly sunny and a bit warmer Saturday, partly cloudy Saturday night,
• Then a mix of clouds and sun and a bit cooler Sunday (Mother’s Day), partly cloudy at night.
• snow level above 8,000 ft. today and tonight, free air freezing level 12,000 ft. Saturday through Sunday night.
• highs 65-55 lows 45-34.
• Partly cloudy Monday and Monday night,
• Mostly sunny and a bit warmer Tuesday and (cooler) Wednesday, clear both nights,
• Then sunny and a bit warmer Thursday.
• free air freezing level 10,000 ft. Monday through Tuesday, then 11,000 ft. Tuesday night through Thursday.
• highs 57-67 cooling to 64 Wednesday warming back to 67 Thursday lows 38-42.

________________

**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.

________________