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 that slid through the Pacific Northwest Friday for cooling. The graphics for days 3-7  Tuesday through Saturday show a frontal system offshore Thursday then moving in next Friday.

______________

ADVISORIES:

• NONE AT THIS TIME.

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.

_______________

________________

• Some AM clouds with patchy fog, sunny and a bit cooler this afternoon,  mostly clear with patchy fog late tonight,
• Sunny and a bit warmer Sunday, clear with patchy fog late at night,
•  Sunny and a bit warmer Monday, clear with patchy fog late Monday night.
• highs 84-88 lows 56-58.
• Sunny and a bit warmer Tuesday, mostly clear in the evening, partly cloudy late Tuesday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Wednesday and in the evening, mostly cloudy with patchy fog and a slight (20%) chance of showers late at night,
• AM clouds with patchy fog and a slight (20%) chance of showers, sunny and a bit cooler with a slight (20%) chance of showers Thursday afternoon, just partly cloudy Thursday night,
• Then partly cloudy and a bit warmer Friday.
• highs 92-85 warming to 88 Friday lows 60-62. (seasonal averages high 88 low 58).

_______________

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

• AM clouds with areas of fog, sunny and a bit cooler this afternoon, mostly clear with patchy evening coastal fog, and areas of fog late tonight,
• Some AM clouds with areas of fog, sunny Sunday afternoon, mostly clear with patchy evening coastal fog, partly cloudy with areas of fog late Sunday night,
• Patchy AM fog, sunny Monday afternoon, mostly clear with areas of fog late Monday night.
• highs near 70 lows near 52.
• Areas of AM fog, mostly sunny and a bit warmer Tuesday afternoon, mostly clear in the evening, mostly cloudy with patchy fog late Tuesday night,
• Mostly cloudy with areas of AM fog, partly cloudy and a bit cooler Wednesday afternoon, patchy evening fog, mostly cloudy with patchy fog late Wednesday night,
• AM clouds with patchy fog, partly cloudy Thursday afternoon, patchy evening fog, mostly cloudy with patchy fog late Thursday night,
• A clouds, then sunny and a bit warmer Friday afternoon.
• highs 72-70 warming back to 72 Friday lows 55-56.
• (seasonal averages high 67 low 54).                                                                                                                                                                                                                                                                                                                                                                                                                         _______________

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

• Sunny and a bit cooler today, mostly clear tonight,
• Sunny and a bit warmer Sunday, mostly clear at night,
• Sunny and a bit warmer Monday, partly cloudy in the evening, then mostly clear late Monday night.
• free air freezing level 13,000 ft. today through Monday night.
• highs 74-72 warming to 73 Sunday lows 45-52.
• Sunny and a bit warmer Tuesday, mostly clear Tuesday night,
• Mostly sunny and a bit cooler with a slight (20%) chance of thunderstorms Wednesday, mostly cloudy with a slight (20%) of thunderstorms Wednesday night,
• A mix of clouds and sun and a bit cooler with a slight (20%) chance of thunderstorms Thursday, partly cloudy with a slight (20%) chance of thunderstorms Thursday night,
• Then mostly sunny Friday.
•  free air freezing level 14,000 ft. Tuesday through Thursday, then 13,000 ft. Thursday night and Friday.
• highs 79-82 cooling to 76 Thursday lows near 52.