An approaching Broad Upper Level High Pressure Ridge (“Arch”shape) takes over to start heating us up. The graphics for days 1-3 show no frontal systems moving into or through the Pacific Northwest. The graphics for days 3-7   Thursday through Monday show a frontal systems that pushed into the Pacific Northwest Wednesday, then a cold front will be to our northwest next Sunday.

______________

• A FIRE WEATHER WATCH IS IN EFFECT FOR ABUNDANT LIGHTNING FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR THE CENTRAL MOUNTAINS OF OREGON AND THE SOUTHERN DESCHUTES NATIONAL NATIONAL FOREST.
• A FIRE WEATHER WATCH IS IN EFFECT FOR ABUNDANT LIGHTNING ON DRY FUELS FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE  AND WESTERN HARNEY COUNTIES.
• A HEAT ADVISORY IS IN EFFECT FROM 11 AM UNTIL 9 PM TUESDAY FOR THE LOWER COLUMBIA BASIN OF OREGON, AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.

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.

_______________

________________

• Sunny and a bit warmer today, mostly clear tonight,
• Sunny and a bit cooler Tuesday, mostly clear at night,
• Mostly sunny and a bit cooler Wednesday, mostly clear in the evening, then partly cloudy Wednesday night.
• highs 95-84 lows 62- 59.                     .
• Partly cloudy and a bit warmer Thursday afternoon, clear Thursday night,
• Sunny and a bit warmer Friday, clear at night,
• Then sunny Saturday and Sunday, clear Saturday night.
•  highs 87-94 lows 60-58 warming 62 Friday night (seasonal averages high 84 low 56).

_______________

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

• Patchy AM fog, sunny and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy late tonight,
• AM clouds, sunny and a bit cooler Tuesday afternoon, partly cloudy in the evening, mostly cloudy late at night,
• Then mostly cloudy and a bit warmer Wednesday, then mostly cloudy Wednesday night.
• highs near 70 lows 52-54.
• Mostly sunny Thursday, mostly clear Thursday night,
• Mostly sunny and a bit warmer Friday, mostly clear at night,
• Partly cloudy Saturday and Saturday night,
• Then partly cloudy Sunday.
• highs 70-72 lows 52-55.
• (seasonal averages high 66 low 53).                                                                                                                                                                                                                                                                                                                                                                                                                         _______________

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

• Sunny and a bit warmer today, mostly clear tonight,
• Sunny and a bit cooler Tuesday, partly cloudy in the evening, mostly clear late at night,
• Sunny and cooler Wednesday, partly cloudy in the evening, then mostly cloudy late Wednesday night.
• snow level free air freezing level 15,000 ft, today through Tuesday, 15,000 ft. falling to 14,000 ft Tuesday night, 13,000 ft Wednesday, then 15,000 ft. Wednesday night.
• highs 70-84 lows 52-47.
• Sunny and a bit warmer Thursday, clear Thursday night,
• Sunny and warmer Friday, clear at night,
• Then sunny and a bit cooler Saturday and Sunday, clear Saturday night,
• highs 75-85 cooling to 83 Wednesday lows 48-54.
• free air freezing level 15,000 ft. Thursday through Friday, then 16,000 ft. Friday night through Sunday.
• highs 74-85 cooling to 83 Saturday lows 49-55.