Jul
15.
Here is my new weekly weather quiz question. “What is the “Showalter Index?”
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Upper Level High Pressure over the 4 corners area is moving away from us but still producing sunshine with high temperatures in the 90s. The graphics for days 1-3 show no frontal systems sliding into Oregon. The graphics for days 3-7 Friday through Tuesday show a cold frontal system slowly pushing through the Pacific Northwest Friday with another cold front sliding in between Monday and Tuesday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 41 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 41 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- A RED FLAG WARNING IS IN EFFECT FROM 11 AM UNTIL 8 PM TONIGHT FOR DRY AND UNSTABLE CONDITIONS FOR THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS.
- A RED FLAG WARNING IS IN EFFECT FROM 2 PM UNTIL 8 PM TONIGHT FOR THE EASTERN ROGUE VALLEY.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH WEDNESDAY EVENING FOR EVENING THUNDERSTORMS FOR THE NORTHERN AND CENTRAL WILLAMETTE VALLEY, THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE MT. HOOD NATIONAL FOREST REGION.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH WEDNESDAY EVENING FOR THUNDERSTORMS FOR THE SOUTH WILLAMETTE VALLEY, THE CENTRAL OREGON CASCADE FOOTHILLS, THE NORTHERN WILLAMETTE FOREST, AND THE SOUTHERN OREGON NATIONAL FOREST.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH THIS EVENING FOR ABUNDANT LIGHTNING FOR THE UMPQUA BASIN, THE UMPQUA NATIONAL FOREST,THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH WEDNESDAY AFTERNOON FOR ABUNDANT LIGHTNING FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES, THE DESCHUTES NATIONAL FOREST, THE MIINUS SISTERS RANGER DISTRICT, THE EAST SLOPES OF THE NORTHERN OREGON CASCADES, AND THE CENTRAL MOUNTAINS OF OREGON.
- AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM THURSDAY AFTERNOON THROUGH MONDAY EVENING FOR MALHEUR COUNTY AND THE OREGON LOWER TREASURE VALLEY.
- A HEAT ADVISORY IS IN EFFECT FROM 11 AM TODAY UNTIL 8 AM WEDNESDAY FOR THE INNER PORTLAND METRO-EAST PORTLAND METRO, THE WEST COLUMBIA RIVER GORGE, AND THE CENTRAL COLUMBIA GORGE, AND THE I-84 CORRIDOR.
- A HEAT ADVISORY IS IN EFFECT FROM NOON TODAY UNTIL 10 PM WEDNESDAY FOR THE EASTERN COLUMBIA GORGE OF OREGON AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A HEAT ADVISORY IS IN EFFECT FROM NOON TODAY UNTIL 10 PM WEDNESDAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON AND NORTH CENTRAL OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY AND JACKSON COUNTY.
- A HEAT ADVISORY IS IN EFFECT FROM NOON TUESDAY UNTIL 10 PM THURSDAY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON WEDNESDAY FOR GRANT, MORROW, AND UMATILLA COUNTIES.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON WEDNESDAY FOR BAKER COUNTY, NORTHERN HARNEY COUNTY, AND NORTHERN MALHEUR 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.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Sunny and a bit warmer (HOT) Today, mostly cloudy tonight,
- Sunny and cooler Wednesday, mostly clear at night,
- Sunny and a bit warmer Thursday, then mostly clear Thursday night.
- highs 98-87 warming to 90 Thursday lows near 54.
- Sunny and a bit warmer Friday, clear Friday night,
- Sunny and a bit warmer Saturday, mostly clear at night,
- Sunny and a bit cooler Sunday, clear Sunday night,
- Then sunny Monday.
- highs 92-95 cooling to 90 Monday lows 57-54 (seasonal averages high 85 low 52)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: MODERATE (6)
TREES: LOW (8)
WEEDS: ABSENT (0)
Measured 7.14.24
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Sunny start, partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms today, mostly cloudy this evening, clearing patchy fog late tonight,
- Sunny and a bit cooler Wednesday, mostly clear with patchy fog late at night,
- Mostly sunny and a bit warmer Thursday, then mostly clear with patch fog Thursday night.
- highs 98-92 lows near 59 lows near 59.
- Sunny Friday, clear Friday night,
- Mostly sunny Saturday, mostly clear at night,
- Some AM clouds, sunny and a bit cooler Sunday afternoon, clear Sunday night,
- Then sunny Monday.
- highs 93-90 lows 62-59. (seasonal average high 87 low 58)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy AM dense coastal fog while patchy AM inland fog, partly cloudy and a bit warmer this afternoon, mostly cloudy with patchy evening fog, partly cloudy with patchy fog late tonight.
- Mostly cloudy with patchy AM coastal fog while areas of inland fog, sunny Wednesday afternoon, mostly clear with patchy evening fog, partly cloudy with areas of fog late at night,
- Partly cloudy with areas of AM and late night fog, a bit warmer Thursday, patchy evening fog, then partly cloudy Thursday night.
- highs 70-74 lows near 52.
- Partly cloudy with areas of AM and late night fog and a bit warmer Friday, partly cloudy Friday night,
- Partly cloudy and a bit cooler with patchy fog Saturday, mostly cloudy with patchy fog at night,
- Patchy AM and late night fog, partly cloudy Sunday and Sunday night,
- Some AM clouds, then sunny and a bit cooler Monday afternoon.
- highs 75-72 lows 54-52. (seasonal average high 66 low 54)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly sunny and a bit warmer today with a slight (20%) chance of afternoon thunderstorms, mostly cloudy with a slight (20%) chance of evening thunderstorms, partly cloudy with a slight (20%) chance of thunderstorms late tonight,
- Sunny and a bit cooler Wednesday, mostly clear Wednesday night,
- Sunny Thursday, then clear Thursday night.
- free air freezing level 14,000 ft. today, 15,000 ft. falling to 14,000 ft. late tonight, 14,000 ft. rising to 15,000 ft. Wednesday afternoon, then 15,000 ft. Thursday and Thursday night,
- highs 88-82 lows 52-49.
- Sunny and a bit warmer Friday, mostly clear Friday night,
- Sunny and a bit warmer Saturday, mostly clear at night,
- Sunny and a bit cooler Sunday, mostly clear Sunday night,
- Then sunny Monday.
- free air freezing level 15,000 ft. Friday, 16,000 ft. Friday night, 16,000 ft. Saturday, above 16,000 ft. Saturday night, 16,000 ft. Sunday, above 16,000 ft. Sunday night and Monday.
- highs 82-88 cooling back to 82 Monday lows near 52.
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