Here is my new weekly weather quiz question. “What is a “Polar Front?”

ADVISORIES:

• A WINTER STORM WARNING IS IN EFFECT UNTIL 1 AM TUESDAY ABOVE 1,000 FT. FOR THE NORTHERN OREGON CASCADE FOOTHILLS AND THE NORTHERN OREGON CASCADES.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 1 AM TUESDAY ABOVE 1,000 FT. FOR THE CASCADE FOOTHILLS IN LANE COUNTY, AND THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 AM TUESDAY ABOVE 1,000 FT. FOR THE UPPER HOOD RIVER VALLEY.
• A WINTER STORM WARNING IS IN EFFECT UNTIL 1 AM TUESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 AM TUESDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM TUESDAY ABOVE 3,000 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
• A WINTER STORM WATCH IS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY EVENING ABOVE 2,500 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY.
• *A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM TUESDAY ABOVE 3,000 FT. FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.UNTIL 1 AM TUESDAY ABOVE 2,500 FT. FOR JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 AM TUESDAY ABOVE 1,000 FT. THE COAST RANGE OF NORTHWEST OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 AM TUESDAY ABOVE 1,000 FT. FOR THE CENTRAL COAST RANGE OF OF WESTERN OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM TUESDAY ABOVE 4,000 FT. FOR THE SOUTHERN BLUE MOUNTAIN OF OREGON, THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM TUESDAY ABOVE 2,500 FT. FOR WALLOWA COUNTY.
• A WIND ADVISORY IS IN EFFECT FROM 11 AM MST UNTIL 8 PM MST TONIGHT FOR THE OREGON LOWER TREASURE VALLEY.
• A WIND ADVISORY IS IN EFFECT UNTIL 8 PM THIS EVENING FOR CENTRAL AND EASTERN LAKE 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.

• Mostly cloudy with evening rain showers, snow showers likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of rain and snow showers late tonight ( under 0.10 in. of rain possible, 1-2 in. of snow possible above 1,500 ft. and little or no snow accumulation below 1,500 ft., snow level 1,000 ft.),
• Mostly cloudy with a good (50%) chance of rain and snow and a bit cooler Tuesday (under 0.10 in. of rain possible, snow level 1,000 ft. rising to 2,500 ft. in the afternoon), a (30%) chance of rain late Tuesday night (under 0.10 in. of rain possible, evening snow level 2,500 ft.),
• Mostly cloudy with a good (50%) chance of AM rain, a bit warmer with rain likely (70%) Wednesday afternoon (under 0.10 in. of rain possible), rain at night (0.50 in. of rain possible, snow level 2,500 ft. late at night),
• Mostly cloudy and a bit cooler with rain and snow and a slight (20%) chance of thunderstorms Thursday, then rain and snow Thursday night.
• lows 35-42 cooling to 45 Thursday highs 47-55 cooling to 45 Thursday.
• Mostly cloudy with rain and snow and a bit cooler Friday, rain and snow Friday night,
• Mostly cloudy with rain and snow likely (70%) Saturday and at night,
• Mostly cloudy with AM rain and snow likely (70%), a good (50%) chance of rain and snow and a bit warmer Sunday afternoon, a (40%) chance of rain and snow Sunday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain and snow Monday.
• highs 44-47 lows 32-26 warming to 28 Sunday night. (seasonal average high 56 low 38)

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

• Mostly cloudy with a (40%) chance of evening coastal showers with a slight (20%) chance of thunderstorms and a (40%) chance of coastal rain late tonight while inland evening showers with snow likely (70%) and a slight (20%) chance of thunderstorms with a (40%) chance of inland rain and snow late tonight (under 0.10 in. of rain possible, no snow accumulation expected, snow level 1,500 ft.),
• Mostly cloudy with a (30%) chance of coastal rain Tuesday while a (30%) chance of inland AM rain and snow and a (30%) chance of inland rain in the afternoon (under 0.10 in. of rain possible, AM snow level 2,000 ft.), a (40%) chance of rain Tuesday night (under 0.10 in. of rain possible),
•  Mostly cloudy with AM rain, rain (0.25 in. of rain possible) and a bit warmer Wednesday afternoon and breezy (Wind: S S 150-25 mph gusts to 40 mph, rain (1.00 in. of rain possible) and windy  at night (Coastal Wind: SW 25-35 mph while inland Wind: SW 25-35 mph decreasing to SW15-25 mph late at night),
• Mostly cloudy and a bit cooler with showers and a slight (20%) chance of thunderstorms Thursday, then rain and snow and breezy Thursday night.
• lows 38-44 cooling to 38 Thursday night highs 50-55 cooling to 47 Thursday.
• Mostly cloudy and breezy with rain and snow and a bit cooler Friday, rain and snow likely (70%) late Friday night,
• Mostly cloudy with rain and snow Saturday, rain and snow likely (70%) at night,
• Mostly cloudy with AM rain and snow likely (70%), a good (50%) chance of rain and snow and a bit warmer Sunday afternoon, a (30%) chance of rain and snow Sunday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain and snow Monday.
• highs 46-50 lows near 36. (seasonal average high 55 low 41)