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The Oregon Department of Environmental Quality, and the Lane Regional Air Protection Agency have continued an Air Quality Advisory, which is in effect until further notice. An Air Quality Advisory for Smoke remains in effect. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels at times until further nortice. Pollutants in smoke can cause burning eyes, runny nose, aggravate heart and lung diseases, and aggravate other serious health problems. Limit outdoor activities and keep children indoors if it is smoky. Please follow medical advice if you have a heart or lung condition. More information about air quality can be found at: www.oregon.gov/DEQ www.lrapa.org

Oregon Department of Environmental Quality has issued an Air Pollution Advisory...in effect until 11 AM PDT Monday. The Oregon Department of Environmental Quality issued an air quality advisory for Eastern Douglas, Klamath and Lake counties due to numerous wildfires burning in the region. DEQ also expects intermittent smoke in Jackson County through at least Monday due to smoke from surrounding fires. The wildfire smoke combined with forecast conditions will cause air quality levels to fluctuate and could be at unhealthy levels. Smoke levels can change rapidly depending on the weather and planned burn operations. Smoke can irritate the eyes and lungs and worsen some medical conditions. People most at risk include infants and young children, people with heart or lung disease, older adults and pregnant people. People can take the following precautions to protect their health: - Follow local burn restrictions to prevent deteriorating air quality. - Avoid strenuous outdoor activity during periods of poor air quality. - People with heart or lung problems and young children are especially vulnerable. These people should stay indoors while smoke levels are high. - Use certified High Efficiency Particulate Air (HEPA) filters in indoor heating, ventilation, cooling and air purification systems. - Avoid using wood-burning stoves and other sources of indoor smoke if possible. For additional information...please visit the web site at https://oregonsmoke.org

* WHAT...Very hot temperatures. Friday's high temperatures 98 and 103 degrees. Saturday's high temperatures 95 and 100 degrees. * WHERE...Ione, Northport, Clark Fork, Kettle Falls, Colville, Fruitland, Republic, Orin-Rice Road, Springdale-Hunters Road, Athol, Deer Park, Chewelah, Priest River, Tiger, Flowery Trail Road, Inchelium, Boulder Creek Road, Chesaw Road, Schweitzer Mountain Road, Metaline, Highway 20 Wauconda Summit, Sandpoint, Newport, Wauconda, Bonners Ferry, Metaline Falls, Sherman Pass, and Eastport. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially for those without effective cooling or adequate hydration.

* WHAT...Hot temperatures. High temperatures 90 to 100. The hottest temperatures will be on Friday. * WHERE...Cloverland Road, Peola, Anatone, and Mountain Road. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially for those without effective cooling or adequate hydration.

* WHAT...Very hot temperatures. Friday's high temperatures 102 and 108 with up to 112 degrees around Lewiston. Saturday's high temperatures 95 to 101 with up to 105 at Omak. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially for those without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Overnight temperatures will be well above average with some areas staying above 80 degrees well into the night. Homes without air conditioning will struggle to cool overnight.

...AIR QUALITY ADVISORY FROM THE OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY FOR Harney and Malheur Counties... * WHAT...High concentration of smoke particulates from numerous wild fires in Oregon and Nothern California * WHERE...Harney and Malheur Counties. * WHEN...Until at least 2 PM PDT MONDAY. * IMPACTS...Smoke can irritate the eyes, lungs and worsen some medical conditions. People most at risk to adverse health effects include infants, young children, people with heart or lung disease, older adults, and pregnant women. * ADDITIONAL DETAILS...Smoke levels can change rapidly depending on weather. Check current conditions on the Oregon Smoke Information Blog, DEQ's Air Quality Index, or by downloading the free OregonAIR app on your smartphone.

...RED FLAG WARNING IN EFFECT FROM NOON FRIDAY TO 1 AM PDT SUNDAY FOR HOT, DRY AND UNSTABLE CONDITIONS FOR EAST WASHINGTON CENTRAL CASCADES, EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL RECREATION AREA... * Impacts: Combined with dry fuels...these conditions could result in very active convective columns and possible plume dominated fires. * Affected Area: Fire Weather Zone 696 East Washington Central Cascades (Zone 696) and Fire Weather Zone 697 East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697). * Winds: Friday, terrain driven wind 4 to 8 mph. Friday evening through Saturday evening, west or northwest wind 6 to 9 mph with evening gusts to 16 mph. * Timing: Noon Friday to 1 AM PDT Sunday. * Relative Humidities: 14 to 30 percent in the valleys and 30 to 47 percent over the higher terrain. * Temperatures: High temperatures 100 to 105 in the valleys and 85 to 95 in the higher terrain.

A deep layer monsoonal moisture will push into the region this afternoon and evening. This will be followed by a potent shortwave expected to pass through the area late tonight through Saturday afternoon. This is likely to result in isolated thunderstorms beginning late this afternoon, with isolated thunderstorms a possibility tonight into Saturday morning. Another round of thunderstorms is anticipated Saturday afternoon, with moderate confidence in scattered coverage along and east of the Cascades. The National Weather Service in Medford has upgraded the Fire Weather Watch to a Red Flag Warning which is in effect from 11 AM to 11 PM PDT Saturday. * IMPACTS..Abundant lightning on dry fuels will increase the risk of new fire starts. Additionally, gusty outflow winds will allow for new and existing fires to grow rapidly. * AFFECTED AREA...Most areas from the Cascade crest east, including FWZs 623, 624, 625, 284, 285. And west of the Cascade crest, FWZs 617 and 280. * THUNDERSTORMS...Isolated to scattered thunderstorms, with the greatest coverage anticipated Saturday afternoon. Storms will initially start off dry late this afternoon/evening, then trend wetter early Saturday and Saturday afternoon. Despite the wet nature of the thunderstorms, lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 40 to 50 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

An Air Quality Alert was issued by the following agencies: Washington Department of Ecology Colville Confederated Tribes An Air Quality Alert continues for all of Okanogan and Ferry Counties, as well as the Colville Reservation is in effect until further notice, due to expected smoke from nearby and regional wildfires. Particulate matter (PM2.5) may reach Unhealthy and Unhealthy for Sensitive Groups levels. Health Impacts and Recommended Actions: When air quality is Unhealthy, everyone should reduce exposure. When air quality is Unhealthy for Sensitive Groups, sensitive groups should take steps to reduce exposure. Limit time outside, avoid strenuous outdoor activity, and follow tips for cleaner indoor air. Everyone should watch for symptoms as a sign to reduce exposure. Agricultural and outdoor burning restrictions are in effect. The Air Quality Alert has ended for Chelan and Asotin counties.

* WHAT...Very hot temperatures. Friday's high temperatures 102 and 108 with up to 112 degrees around Lewiston. Saturday's high temperatures 95 to 101 with up to 105 at Omak. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially for those without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Overnight temperatures will be well above average with some areas staying above 80 degrees well into the night. Homes without air conditioning will struggle to cool overnight.

* WHAT...Hot temperatures. High temperatures 90 to 100. The hottest temperatures will be on Friday. * WHERE...Cloverland Road, Peola, Anatone, and Mountain Road. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially for those without effective cooling or adequate hydration.

* WHAT...Very hot temperatures. Friday's high temperatures 98 and 103 degrees. Saturday's high temperatures 95 and 100 degrees. * WHERE...Republic, Bonners Ferry, Flowery Trail Road, Kettle Falls, Springdale-Hunters Road, Metaline Falls, Newport, Colville, Athol, Sandpoint, Wauconda, Ione, Chesaw Road, Tiger, Fruitland, Boulder Creek Road, Clark Fork, Sherman Pass, Inchelium, Eastport, Chewelah, Northport, Metaline, Schweitzer Mountain Road, Deer Park, Priest River, Orin-Rice Road, and Highway 20 Wauconda Summit. * WHEN...From 11 AM this morning to 8 PM PDT Saturday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially for those without effective cooling or adequate hydration.

* WHAT...Dangerously hot conditions with temperatures 102 to 108 degrees. This will pose a major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures 92 to 102 degrees. This will pose a moderate risk of heat-related illness. * WHERE...Blue Mountains of Oregon and Washington, Grande Ronde Valley, Ochoco-John Day Highlands, East Slopes of the Oregon Cascades, North Central Oregon, Central Oregon, and Lower Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...Dangerously hot conditions with temperatures 102 to 108 degrees. This will pose a major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Extreme heat will significantly increase the risk of heat-related illnesses for much of the population, especially those who are heat sensitive and those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures 92 to 102 degrees. This will pose a moderate risk of heat-related illness. * WHERE...Blue Mountains of Oregon and Washington, Grande Ronde Valley, Ochoco-John Day Highlands, East Slopes of the Oregon Cascades, North Central Oregon, Central Oregon, and Lower Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

...HOT, DRY, AND UNSTABLE CONDITIONS THIS AFTERNOON AND EVENING... .An upper level ridge of high pressure will remain over the region through today, producing hot and dry conditions. A weak weather disturbance riding up the ridge and over the region will bring increasing unstable conditions across the eastern mountains, with a slight chance of isolated thunderstorms in the afternoon. * AFFECTED AREA...Fire Weather Zones 640 Central Mountains of Oregon, 642 Southern Blue and Strawberry Mountains and 644 Central Blue Mountains. * TIMING...Late this morning through mid evening. * WINDS...West 5 to 10 mph. * RELATIVE HUMIDITY...As low as 10 percent. * TEMPERATURES...Up to 101. * IMPACTS...The combination of hot, dry and unstable conditions may lead to extreme fire behavior. * HAINES...As high as 6.

...RED FLAG WARNING IN EFFECT FROM NOON FRIDAY TO 1 AM PDT SUNDAY FOR HOT, DRY AND UNSTABLE CONDITIONS FOR EAST WASHINGTON CENTRAL CASCADES, EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL RECREATION AREA... * Impacts: Combined with dry fuels...these conditions could result in very active convective columns and possible plume dominated fires. * Affected Area: Fire Weather Zone 696 East Washington Central Cascades (Zone 696) and Fire Weather Zone 697 East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697). * Winds: Friday, terrain driven wind Friday 4 to 8 mph. Friday evening through Saturday evening, west or northwest wind 6 to 9 mph with evening gusts to 16 mph. * Timing: Noon Friday to 1 AM PDT Sunday. * Relative Humidities: 14 to 30 percent in the valleys and 30 to 47 percent over the higher terrain. * Temperatures: High temperatures 100 to 105 in the valleys and 85 to 95 in the higher terrain.

* WHAT...For the Excessive Heat Warning, dangerously hot conditions with temperatures up to 108 expected. For the Heat Advisory, temperatures up to 102 expected. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Excessive Heat Warning, from noon today to midnight MDT tonight. For the Heat Advisory, from midnight tonight to midnight MDT Saturday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...For the Excessive Heat Warning, dangerously hot conditions with temperatures up to 108 expected. For the Heat Advisory, temperatures up to 102 expected. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Excessive Heat Warning, from noon today to midnight MDT tonight. For the Heat Advisory, from midnight tonight to midnight MDT Saturday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.