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Oregon Department of Environmental Quality has issued an Air Quality Advisory...IN EFFECT UNTIL 5 PM PDT MONDAY. A Smoke Air Quality Advisory has been issued. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels. 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. For additional information...please visit the Web site at http://www.oregon.gov/DEQ

...HOT, DRY, AND UNSTABLE CONDITIONS EXPECTED SATURDAY THROUGH SUNDAY... A strong ridge of high pressure will amplify over the Pacific Northwest this weekend leading to hot, dry, and unstable conditions. The combination will result in conditions conducive to extreme fire behavior, particularly for any ongoing fires in the region. The National Weather Service in Pendleton has issued a Red Flag Warning for dry and unstable conditions, which is in effect from 11 AM Saturday to 11 PM PDT Sunday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 642 Southern Blue and Strawberry Mountains and 644 Central Blue Mountains. * TIMING...Saturday 11 AM to Sunday 11 PM. * WINDS...Northeast 5 to 12 mph. * RELATIVE HUMIDITY...As low as 10 percent. * TEMPERATURES...Up to 95 to 105 degrees. * IMPACTS...Current fires could exhibit extreme fire behavior. * HAINES...As high as 6.

* WHAT...High concentration of smoke particulates from wildfire smoke. * WHERE...Harney and Malheur Counties. * WHEN...AIR QUALITY ALERT IN EFFECT UNTIL 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.

* WHAT...High temperatures of up 100 to 108 degrees expected. * WHERE...Klamath, Modoc, Lake, and central and eastern Siskiyou counties, including Klamath Falls, Weed, Yreka, Mount Shasta City, Lakeview, Alturas, Chiloquin, Chemult, Fort Rock, and Christmas Valley. * WHEN...From 11 AM to 11 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

Oregon Department of Environmental Quality has issued an Air Pollution Advisory...in effect until 5 PM PDT Monday. The Oregon Department of Environmental Quality issued an air quality advisory for Klamath and northern Lake counties due to numerous wildfires burning in the region. DEQ also expects other areas of the state may see intermittent smoke from ongoing large wildfires, including eastern Douglas and northeast Jackson counties. 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. 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. DEQs color-coded Air Quality Index provides current air quality conditions and ranks air quality as follows: Green is good. Yellow is moderate. Orange is unhealthy for sensitive groups such as children, the elderly, pregnant women and those with respiratory conditions. Red is unhealthy for everyone. Purple is very unhealthy for all groups. Maroon is hazardous. For additional information...please visit the web site at https://oregonsmoke.org

...POTENTIAL FOR ABUNDANT LIGHTNING ON SUNDAY INTO EARLY MONDAY... The National Weather Service in Boise has issued a Fire Weather Watch for lightning, which is in effect from Sunday morning through late Sunday night. * Thunderstorms...Chance for thunderstorms (20 percent) and abundant lightning Sunday into Monday morning. Best chance looks to be across southern Burns and Vale BLM. * Outflow Winds...Up to 55 MPH possible. * Timing...From Sunday morning through late Sunday night.

* WHAT...Temperatures from 101 to 103 expected. * WHERE...In Idaho, Southwest Highlands and Owyhee Mountains. In Oregon, Harney County. * WHEN...Until midnight MDT /11 PM PDT/ Monday night. * IMPACTS...Hot temperatures may cause heat illnesses to occur.

* WHAT...Dangerously hot conditions with temperatures up to 105 and lower elevation valleys near the Snake River seeing up to 110. * WHERE...Baker County. * WHEN...Until 11 PM PDT Monday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Dangerously hot conditions with temperatures from 105 to 110. The hottest temperatures will occur Sunday and Monday afternoon. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...Until midnight MDT Monday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

An upper level low will move up from the south along the California coast Saturday, and will tap into some moisture that is expected to increase late Saturday afternoon into Saturday night. At the same time elevated instability will increase along with a moderate to strong trigger which could result in isolated to possibly scattered thunderstorms in the overnight period Saturday into Sunday morning. Given how dry fuels are along with the recent hot stretch, lightning efficiency will he high despite storms coming in during the night. The National Weather Service in Medford has issued a Fire Weather Watch, which is in effect from Saturday afternoon through Sunday morning. * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. Additionally, winds will allow for new and existing fires to grow rapidly out of control. * AFFECTED AREA...All of Fire Zones 615, 616, 617, 618, 619, 620, 622, and 623. * THUNDERSTORMS...Isolated to scattered thunderstorms are possible Saturday night. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 40 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

* WHAT...Hot temperatures. Highs Friday 94 to 99, 98 to 107 Saturday through Monday. Overnight lows mainly in the upper 50s and 60s. * WHERE...Metaline Falls, Boulder Creek Road, Springdale-Hunters Road, Chewelah, Orin-Rice Road, Tiger, Chesaw Road, Republic, Highway 20 Wauconda Summit, Fruitland, Colville, Deer Park, Kettle Falls, Wauconda, Ione, Northport, Sherman Pass, Flowery Trail Road, Metaline, Inchelium, and Newport. * WHEN...For the Heat Advisory, until 11 AM PDT Saturday. For the Excessive Heat Warning, from 11 AM Saturday to 8 PM PDT Monday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially those without effective cooling or adequate hydration.

* WHAT...Very hot temperatures. High temperatures in the valleys 95 to 103 Friday, 97 to 107 Saturday, near 100 to 110 Sunday and Monday. Lows in the mid 60s to mid 70s. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...For the Heat Advisory, until 11 AM PDT Saturday. For the Excessive Heat Warning, from 11 AM Saturday to 8 PM PDT Monday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially those without effective cooling or adequate hydration.

* WHAT...Hot conditions during the day for the valleys. Highs mid 90s to 105. Overnight lows mainly in the upper 50s and 60s * WHERE...Anatone, Craigmont, Kamiah, Mountain Road, Winchester, Nezperce, Cloverland Road, Soldiers Meadow Road, and Peola. * WHEN...For the Heat Advisory, until 11 AM PDT Saturday. For the Excessive Heat Warning, from 11 AM Saturday to 8 PM PDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

* WHAT...Hot temperatures. Valley high temperatures 98 to 105. Highs in the mountains in the 80s and 90s. * WHERE...Stevens Pass, Stehekin, and Holden Village. * WHEN...From 11 AM Saturday to 8 PM PDT Monday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially those without effective cooling or adequate hydration.

* WHAT...Very hot temperatures. High temperatures in the valleys 95 to 103 Friday, 97 to 107 Saturday, near 100 to 110 Sunday and Monday. Lows in the mid 60s to mid 70s. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...For the Heat Advisory, until 11 AM PDT Saturday. For the Excessive Heat Warning, from 11 AM Saturday to 8 PM PDT Monday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially those without effective cooling or adequate hydration.

* WHAT...Hot temperatures. Highs Friday 94 to 99, 98 to 107 Saturday through Monday. Overnight lows mainly in the upper 50s and 60s. * WHERE...Metaline Falls, Boulder Creek Road, Springdale-Hunters Road, Chewelah, Orin-Rice Road, Tiger, Chesaw Road, Republic, Highway 20 Wauconda Summit, Fruitland, Colville, Deer Park, Kettle Falls, Wauconda, Ione, Northport, Sherman Pass, Flowery Trail Road, Metaline, Inchelium, and Newport. * WHEN...For the Heat Advisory, until 11 AM PDT Saturday. For the Excessive Heat Warning, from 11 AM Saturday to 8 PM PDT Monday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially those without effective cooling or adequate hydration.

* WHAT...Hot conditions during the day for the valleys. Highs mid 90s to 105. Overnight lows mainly in the upper 50s and 60s * WHERE...Anatone, Craigmont, Kamiah, Mountain Road, Winchester, Nezperce, Cloverland Road, Soldiers Meadow Road, and Peola. * WHEN...For the Heat Advisory, until 11 AM PDT Saturday. For the Excessive Heat Warning, from 11 AM Saturday to 8 PM PDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

An Air Quality Alert has been issued by the following agencies: Washington Department of Ecology An Air Quality Alert, issued for all of Chelan County plus the Methow Valley down to Brewster in Okanogan County will remain in effect until further notice, due to expected smoke from the Pioneer Fire and other 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. Limit time outside, avoid strenuous activity, and follow tips for cleaner indoor air. 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.

An Air Quality Alert has been issued by the following agencies: Washington Department of Ecology An Air Quality Alert, issued for all of Chelan County plus the Methow Valley down to Brewster in Okanogan County will remain in effect until further notice, due to expected smoke from the Pioneer Fire and other 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. Limit time outside, avoid strenuous activity, and follow tips for cleaner indoor air. 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.

* WHAT...Daytime temperatures between 94 and 98 degrees expected. * WHERE...Portions of southwest Washington and northwest Oregon, including the Willamette Valley, the Portland Metro Area, Clark County lowlands, the western and central Columbia River Gorge, and Hood River Valley. * WHEN...From 11 AM to 11 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses.