May
03.
Here is my weekly weather quiz question for the last time. “What is a “Red Flag Warning?” Here is the correct answer A Red Flag Warning is a term used by fire-weather forecasters to call attention to limited weather conditions of particular importance that may result in extreme burning conditions. It is issued when it is an on-going event or the fire weather forecaster has a high degree of confidence that Red Flag criteria will occur within 24 hours of issuance. Red Flag criteria occurs whenever a geographical area has been in a dry spell for a week or two, or for a shorter period , if before spring green-up or after fall color, and the National Fire Danger Rating System (NFDRS) is high to extreme and the following forecast weather parameters are forecasted to be met:
1) a sustained wind average 15 mph or greater
2) relative humidity less than or equal to 25 percent and
3) a temperature of greater than 75 degrees F.
In some states, dry lightning and unstable air are criteria. A Fire Weather Watch may be issued prior to the Red Flag Warning.
____________
An Upper Level Low Pressure Trough (“U” shape) is approaching the Pacific Northwest. The graphics for days 1-3 show a frontal system sliding through Pacific Northwest early today. The graphics for days 3-7 Tuesday through Saturday show no frontal systems moving across the Pacific Northwest through the period, but one well to our Northwest next Saturday. .
________________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is NOT AVAILABLE measuring Particulate Matter.
Oakridge: The Air Quality Index is NOT AVAILABLE measuring Particulate Matter.
Cottage Grove: The Air Quality Index is NOT AVAILABLE measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
_______________
ADVISORIES:
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 5 AM TODAY UNTIL 11 AM SUNDAY ABOVE 3,500 FT FOR THE NORTHERN OREGON CASCADES, THE CASCADES OF MARION AND LINN COUNTIES, AND THE CASCADES OF LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 5 AM TODAY UNTIL 11 AM SUNDAY ABOVE 4,000 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 2 AM UNTIL 11 PM TODAY ABOVE 4,000 FT. FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
- A WIND ADVISORY IS IN EFFECT FROM 5 AM UNTIL 5 PM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 5 PM TODAY UNTIL 11 PM SUNDAY ABOVE 4,000 FT. THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
- A WIND ADVISORY IS IN EFFECT FROM 9 AM MDT UNTIL 6 PM MDT TODAY FOR HARNRY COUNTY.
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:
- Mostly cloudy with rain and a bit cooler today, evening rain likely (70%), a good (50%) chance of rain tonight (0.10 in. of rain possible),
- Mostly cloudy with AM rain likely (70%), showers likely (70%) and a bit warmer Sunday afternoon (under 0.10 in. of rain possible), showers at night (under 0.10 in. of rain possible),
- Mostly sunny and a bit warmer with a good (50%) chance of showers Monday, showers likely (70%) with a slight (20%) chance of thunderstorms Monday night.
- highs 53-56 lows 42-45 cooling to 40 Monday night.
- A mix of clouds and sun with a good (50%) chance of showers and a bit warmer Tuesday, partly cloudy in the evening, mostly clear late Tuesday night,
- Mostly sunny and a bit warmer Wednesday, mostly clear at night,
- Then sunny and a bit warmer Thursday and Friday, clear Thursday night.
- highs 58-79 lows 38-46 (seasonal averages high 66 low 42)
__________
EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: LOW (12)
WEEDS: ABSENT (0)
Measured 5.2.24
Data courtesy of Oregon Allergy Associates.
__________
Home Wood Heating Advisory:
Eugene-Springfield: GREEN- Burning wood in wood stoves or fireplaces is allowed.
Oakridge: GREEN- Burning wood in wood stoves or fireplaces is allowed.
*Pellet stoves can be used anytime since they don’t produce the particulate smoke.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
________________
Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with AM rain, snow and a slight (20%) chance of thunderstorms, showers and a slight (20%) chance of thunderstorms and much cooler this afternoon (0.50 in. of rain possible, 1 in., of snow possible, snow level 2,000 ft. rising to 2,500 ft. in the afternoon), mostly cloudy with evening rain showers, snow showers likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of showers and snow showers late tonight (under 0.10 in. of rain possible, snow level 3,000 ft. falling to 2,500 ft. late at night, no snow accumulation expected),
- Mostly cloudy with a (30%) chance of AM rain and snow showers, showers likely (70%) and a bit warmer Sunday afternoon (under 0.10 in. of rain possible, snow level 2,000 ft. rising to 3,500 ft.), a (40%) chance of evening showers, a (40%) chance of rain at night (under 0.10 in. of rain possible),
- Mostly cloudy with AM rain, showers with a slight (20%) chance of thunderstorms and a bit warmer Monday afternoon, evening showers likely (70%) with a slight (20%) chance of thunderstorms, then a slight (20%) chance of showers late Monday night.
- highs 52-55 lows 43-40 warming to 45 Sunday night cooling to 42 Monday night.
- Mostly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday, partly cloudy in the evening, mostly clear Tuesday night,
- Mostly sunny and a bit warmer Wednesday, mostly clear at night,
- Then sunny and a bit warmer Thursday and Friday, clear Thursday night,
- highs 58-82 lows 40-48. (seasonal average high 69 low 46)
____________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with AM coastal rain and a slight (20%) chance of thunderstorms while inland AM rain likely (70%), a good (50%) chance of showers and a slight (20%) chance of thunderstorms this afternoon (0.25 in. of rain possible), mostly cloudy with a (30%) chance of evening showers and a slight (20%) chance of thunderstorms, a (30%) chance of showers late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a (40%) chance of showers Sunday afternoon (under 0.10 in. of rain possible), a slight (20%) chance of evening showers, rain likely (70%) at night (under 0.10 in. of rain possible),
- Partly cloudy with AM rain, mostly cloudy rain with a slight (20%) chance of rain thunderstorms Monday, a (30%) chance of evening rain and a slight (20%) chance of thunderstorms, then a (40%) chance of showers late Monday night.
- highs near 55 lows 42-45 cooling back to 42 Monday night.
- Mostly cloudy with a (40%) chance of AM showers, partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday afternoon, becoming mostly clear Tuesday night,
- Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
- Then sunny and a bit warmer Friday.
- highs 57-73 lows 40-49. (seasonal average high 59 low 46)
__________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with snow and rain today (0.50 in. of rain possible, 2-5 in. of snow possible), snow and rain tonight (0.50 in. of rain possible, 3-6 in. of snow possible),
- Mostly cloudy with AM snow and rain, snow and rain showers Sunday afternoon, snow showers and rain showers at night,
- Mostly cloudy with rain and snow showers Monday, snow showers, rain showers and a slight (20%) thunderstorms Monday night,
- snow level 3,500 ft. today, 2,500 ft. tonight, 2,500 ft. rising to 4,000 ft. Sunday, 4,000 ft. Sunday night and Monday, then 3,500 ft. Monday night.
- highs near 37 lows 26-32 cooling to 28 Monday night.
- Mostly cloudy with snow and rain showers likely (70%) Tuesday, a (50%) chance of rain and snow Tuesday night,
- Mostly sunny and a bit warmer Wednesday, mostly clear at night,
- Then sunny and a bit warmer Thursday and Friday, mostly clear Thursday night,
- snow level 3,500 ft. Tuesday, 4,000 Tuesday night, free air freezing level 5,000 ft. Wednesday, 8,000 ft. Wednesday night, 11,000 ft. Thursday asnd Thursday night, then 12,000 ft. Friday.
- highs 56-45 lows 35-32-38 cooling to 34 Sunday night.
For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com