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.
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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)
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)
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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.