A slow moving Upper Level Low Pressure Trough  (“U” shape) starts a slow cooling trend. The graphics for days 1-3 show a weak cold front to our north Thursday then sliding through the Pacific Northwest. The graphics for days 3-7  Saturday through Wednesday show no frontal  activity moving into the Pacific Northwest through the period.

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ADVISORIES:

• A RED FLAG WARNING IS IN EFFECT FROM 1 PM THROUGH 11 PM THURSDAY  FOR ABUNDANT LIGHTNING ON DRY FUELS FOR 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 FRIDAY AFTERNOON THROUGH FRIDAY EVENING  FOR ABUNDANT LIGHTNING ON DRY FUELS FOR 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.

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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• Mostly clear tonight,
• Sunny Thursday, mostly clear Thursday night,
• Some AM clouds, sunny and a bit cooler Friday afternoon, mostly clear at night,
• Mostly sunny and a bit cooler Saturday, then mostly clear Saturday night.
• lows 59-55 highs 90-83.
• Mostly  sunny and a bit warmer Sunday and Monday, mostly clear both nights,
• Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
• Some AM clouds, then sunny and a bit cooler Wednesday afternoon.
•  highs 85-90 cooling to 88 Wednesday lows 56-59. (seasonal averages high 88 low 58).

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

• Partly cloudy this evening, mostly cloudy late tonight,
• AM clouds, sunny and a bit warmer Thursday, partly cloudy in the evening,  mostly cloudy late Thursday night,
• AM clouds, sunny and a bit cooler Friday afternoon,  mostly clear in the evening, mostly cloudy late at night,
• Then partly cloudy Saturday and Saturday night.
• lows 54-52 highs 70-69.
• Mostly sunny and a bit warmer Sunday and Monday, mostly clear both nights,
• Partly cloudy Tuesday, partly cloudy Tuesday night,
• Mostly cloudy start, then partly cloudy and a bit cooler Wednesday afternoon.
• highs 70-72 cooling back to 70 Wednesday lows 52-54.
• (seasonal averages high 67 low 54).                                                                                                                                                                                                                                                                                                                                                                                                                         _______________

Forecast for the Northern Oregon Cascades including the Cascades in Lane County:

• Mostly clear tonight,
• Sunny and a bit cooler Thursday, mostly clear Thursday night,
• Sunny and a bit cooler Friday and Saturday, mostly clear both nights,
• free air freezing level 14,000 ft. tonight and Thursday, 15,000 ft. Thursday night, 14,00 ft. Friday and  Friday night, then 13,000 ft. Saturday and Saturday night.
• lows 50-45 highs 78-73.
• Sunny Sunday, mostly clear Sunday night,
• Sunny and a bit warmer Monday, partly cloudy in the evening, mostly clear at night,
• Sunny and a bit warmer Tuesday, partly cloudy in the evening, clear late Tuesday night,
• Then sunny and a bit cooler Wednesday.
• free air freezing level 13,000 ft. Sunday, 14,000 ft. Sunday night, 13,000 ft. Monday, 14,000 ft. Monday night, then 14,000 ft. Tuesday through Wednesday.
• highs 73-82 cooling to 79 Wednesday lows 48-52.