Here is my new weekly weather quiz question. What is “The Intertropical Convergence Zone?
_________________
An Upper Level Low Pressure Trough (“U “shape) moves in returning moisture and another frontal system. The graphics for days 1-3 show the frontal system that moved through the Pacific Northwest for your Monday. The graphics for days 3-7 show more frontal activity moving our way Friday through next Tuesday.
________________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 12 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 7 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
NOTE: Outdoor burning remains temporarily prohibited for the following areas: Eugene-Springfield, Florence, Lowell, Oakridge and UGB, and Springfield and UGB.
________________
ADVISORIES:
- A WINTER STORM WARNING IS IN EFFECT UNTIL 1 PM TODAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS AND THE SOUTH CENTRAL OREGON CASCADES.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 1 PM TODAY ABOVE 1,500 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM TODAY ABOVE 4,500 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE SISKIYOU MOUNTAINS AND THE SOUTHERN OREGON CASCADES.
- WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM TODAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE NORTHWEST BLUE MOUNTAINS.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 PM TODAY ABOVE 500 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, AND THE WESTERN COLUMBIA RIVER GORGE.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE NORTH OREGON COAST.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 PM TODAY ABOVE 500 FT. FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 PM TODAY ABOVE 500 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM TODAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE NORTHWEST BLUE MOUNTAINS.
- A HIGH SURF ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE NORTH OREGON COAST.
- A HIGH SURF ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE CENTRAL OREGON COAST.
- A HIGH SURF ADVISORY IS IN EFFECT UNTIL 7 PM TODAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
- A WIND ADVISORY IS IN EFFECT UNTIL 1 AM TODAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND NORTH CENTRAL OREGON.
- A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
HEALTH ADVISORIES:
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE RIVER.
__________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Partly cloudy with AM snow showers and a (30%) of rain showers, partly cloudy and a bit cooler with a slight (20%) chance of showers this afternoon (0.10 in. of rain possible, snow level 1,000 ft.), just partly cloudy with patchy fog late tonight,
- Partly cloudy and a bit warmer Wednesday and in the evening, mostly cloudy late at night,
- Cloudy with a slight (20%) chance of AM rain and snow, a (40%) chance of rain and a bit warmer Thursday afternoon (snow level 1,000 ft.), mostly cloudy with a (40%) chance of evening rain, then just mostly cloudy late Thursday night.
- highs 42-46 lows 20-29.
- Partly cloudy with a slight (20%) chance of AM rain, partly cloudy a bit warmer Friday afternoon, partly cloudy Friday night,
- A mix of clouds and sun Saturday, mostly cloudy at night,
- Mostly cloudy with a slight (20%) chance of AM rain, a bit cooler with a good (50%) chance of rain Sunday afternoon, a good (50%) chance of rain Sunday night,
- Then mostly cloudy with a good (50%) chance of rain Monday (President’s Day).
- highs 50-48 lows 28-36. (seasonal averages high 51 low 35)
__________
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 (LRAPA)
__________
Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with a (40%) chance of rain and snow and a bit cooler today (0.25 in. of rain possible, 2-3 in. of snow possible lower elevations while 3-4 in. of snow possible above 1,500 ft., snow level 400 ft. rising to 1,000 ft. this afternoon), becoming mostly clear this evening, partly cloudy late tonight,
- Some AM clouds, sunny and a bit warmer Wednesday afternoon, mostly clear in the evening, mostly cloudy with a slight (20%) chance of rain and snow late at night,
- Then mostly cloudy and a bit warmer with a slight (20%) chance of rain and snow Thursday and Thursday night.
- highs 42-46 lows 22-32.
- Mostly cloudy with a slight (20%) chance of AM rain and snow, partly cloudy and a bit warmer with a slight (20%) chance of rain Friday afternoon, partly cloudy Friday night,
- Partly cloudy and a bit warmer Saturday and in the evening, mostly cloudy at night,
- Mostly cloudy with a slight (20%) chance of rain Sunday afternoon, a slight (20%) chance of rain Sunday night,
- Then mostly cloudy with a (30%) chance of rain Monday (President’s Day).
- highs 52-50 warming back to 52 Sunday cooling back to 50 Monday lows 30-37. (seasonal averages high 53 low 37)
___________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with AM coastal showers and a slight (20%) chance of thunderstorms and a good (50%) chance of coastal rain and a bit cooler this afternoon while inland AM rain and snow and a slight (20%) chance of thunderstorms and a bit cooler with a good good (50%) chance of inland rain and snow this afternoon (0.10 in. of rain possible), mostly clear and colder tonight with patchy inland fog late,
- Partly cloudy and a bit warmer Wednesday and in the evening, partly cloudy with a slight (20%) chance of coastal rain at night while mostly clear inland in the evening and mostly cloudy inland with with a slight (20%) chance of rain and snow late at night,
- Mostly cloudy with a (30%) chance of AM rain and snow, a (40%) chance of rain Thursday afternoon, then mostly cloudy with a good (50%) chance of rain Thursday night.
- highs 47-52 lows 26-34.
- Mostly cloudy with a slight (20%) chance of AM rain, mostly sunny and a bit warmer with a slight (20%) chance of rain Friday afternoon, partly cloudy Friday night,
- Partly cloudy and a bit cooler Saturday and in the evening, mostly cloudy late at night,
- Mostly cloudy with a slight (20%) chance of rain Sunday afternoon, a (30%) chance of rain Sunday night,
- Then mostly cloudy and a bit cooler with a (30%) chance of rain Monday (President’s Day).
- highs 55-52 lows 33-38. (seasonal averages high 54 low 41)
__________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with AM snow showers (snow possibly heavy at times), a good (50%) chance of snow showers and cooler this afternoon (2-4 in. of snow possible), just partly cloudy tonight,
- Mostly sunny and warmer Wednesday, partly cloudy at night,
- Mostly cloudy and a bit warmer with a (40%) chance of snow Thursday and a (40%) chance of rain in the afternoon (snow level 2,000 ft.), mostly cloudy with a (40%) chance of evening rain and snow, then a slight (20%) chance of snow late Thursday night.
- snow level at the surface today, free air freezing level at the surface tonight, at the surface rising to 3,500 ft. Wednesday afternoon, 4,000 ft. falling to the surface late Wednesday night, snow level 2,000 ft. Thursday, then 2,500 ft. Thursday night..
- highs 23-35 lows 9-20.
- Partly cloudy with a slight (20%) chance of AM snow, a bit warmer with a (40%) chance of snow and rain Friday afternoon, becoming partly cloudy Friday night,
- Partly cloudy and a bit warmer Saturday, a partly cloudy at night,
- Clouds and sun with a slight (20%) chance of AM snow, a mix of clouds and sun and a bit cooler with a good (50%) chance of snow and rain Sunday afternoon, mostly cloudy with a (30%) chance of snow and rain Sunday night,
- Then a mix of clouds and sun and a bit cooler with a good (50%) chance of snow and rain Monday.
- snow level 2,500 ft. Friday, free air freezing level 5,000 ft. Friday night and Saturday, 5,500 ft. Saturday night, snow level 3,000 ft. Sunday, 3,500 ft. Sunday night, then 3,000 ft. Monday (President’s Day).
- highs 37-39 cooling to 34 Monday lows 20-18 warming to 22 Saturday night.
__________
**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.
________________