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Oregon Department of Environmental Quality has issued an Air Quality Advisory for Southern Wasco and Southwestern Sherman counties...IN EFFECT UNTIL NOON 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

* WHAT...Hot conditions during the day for the valleys. Highs 95 to 105. Overnight lows will be in the upper 50s and 60s. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 10 PM PDT Sunday. * IMPACTS...Hot temperatures 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.

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 284, 285, 624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 8 PM PDT Friday. A Fire Weather Watch has also been issued and is in effect from Saturday afternoon through Sunday evening. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * AFFECTED AREA...For the Red Flag Warning, portions of the Fremont- Winema National Forest in Oregon Fire zone 624, Fire weather zone 625 in central and eastern Lake County, northeast portion of Fire Zone 284, and northern portions of the Modoc National Forest in California fire zone 285. For the Fire Weather Watch, all areas. * WIND...Southwest 15 to 25 with gusting 25 and 35 mph. * HUMIDITY...7 to 12 percent. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to be mostly dry or have little precipitation. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. * ADDITIONAL INFORMATION...The best chance for storms will be Saturday afternoon into Saturday evening, then again Sunday afternoon into Sunday evening. No storms are expected later Saturday evening through Sunday morning. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 284, 285, 624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 8 PM PDT Friday. A Fire Weather Watch has also been issued and is in effect from Saturday afternoon through Sunday evening. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * AFFECTED AREA...For the Red Flag Warning, portions of the Fremont- Winema National Forest in Oregon Fire zone 624, Fire weather zone 625 in central and eastern Lake County, northeast portion of Fire Zone 284, and northern portions of the Modoc National Forest in California fire zone 285. For the Fire Weather Watch, all areas. * WIND...Southwest 15 to 25 with gusting 25 and 35 mph. * HUMIDITY...7 to 12 percent. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to be mostly dry or have little precipitation. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. * ADDITIONAL INFORMATION...The best chance for storms will be Saturday afternoon into Saturday evening, then again Sunday afternoon into Sunday evening. No storms are expected later Saturday evening through Sunday morning. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...Hot conditions with temperatures 95-105 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...From noon today to 10 PM PDT Sunday. * 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...Hot conditions with temperatures 95-105 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...From noon today to 10 PM PDT Sunday. * 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.

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 284, 285, 624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 8 PM PDT Friday. a Fire Weather Watch has also been issued. This Fire Weather Watch is in effect from Saturday afternoon through Sunday evening. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * AFFECTED AREA...For the Red Flag Warning, portions of the Fremont- Winema National Forest in Oregon Fire zone 624, Fire weather zone 625 in central and eastern Lake County, northeast portion of Fire Zone 284, and northern portions of the Modoc National Forest in California fire zone 285. For the Fire Weather Watch, all areas. * WIND...Southwest 15 to 25 with gusting 25 and 35 mph. * HUMIDITY...7 to 12 percent. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to be mostly dry or have little precipitation. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. * ADDITIONAL INFORMATION...The best chance for storms will be Saturday afternoon into Saturday evening, then again Sunday afternoon into Sunday evening. No storms are expected later Saturday evening through Sunday morning. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 284, 285, 624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 8 PM PDT Friday. a Fire Weather Watch has also been issued. This Fire Weather Watch is in effect from Saturday afternoon through Sunday evening. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * AFFECTED AREA...For the Red Flag Warning, portions of the Fremont- Winema National Forest in Oregon Fire zone 624, Fire weather zone 625 in central and eastern Lake County, northeast portion of Fire Zone 284, and northern portions of the Modoc National Forest in California fire zone 285. For the Fire Weather Watch, all areas. * WIND...Southwest 15 to 25 with gusting 25 and 35 mph. * HUMIDITY...7 to 12 percent. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to be mostly dry or have little precipitation. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. * ADDITIONAL INFORMATION...The best chance for storms will be Saturday afternoon into Saturday evening, then again Sunday afternoon into Sunday evening. No storms are expected later Saturday evening through Sunday morning. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...High temperatures of 95 to 105 degrees and lows of 55 to 65 are expected. * WHERE...Josephine and Jackson counties and eastern Curry County. This includes the entire Rogue Valley and the cities of Medford, Grants Pass, Cave Junction, and Butte Falls. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Area rivers will be cold and can cause shock to swimmers.

* WHAT...High temperatures of 95 to 102 degrees with lows in the mid to upper 50s expected. * WHERE...In California, Modoc County and eastern Siskiyou County. This includes the cities and communities of Macdoel, Tulelake, Pondosa, Bray, Tennant, Dorris, Tionesta, Alturas, and Adin. In Oregon, Klamath and Lake counties. This includes the cities of Klamath Falls, Chemult, Summer Lake, Chiloquin, Malin, Keno, Sprague River, and Lakeview. * WHEN...Until 9 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses. Area rivers will be cold and can cause shock to swimmers.

...CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND... A threat of isolated thunderstorms over southeast Oregon this weekend brings a risk of dry lightning startups. * AFFECTED AREA...Fire Weather Zones 642 Southern Blue and Strawberry Mountains and 644 Central Blue Mountains. * IMPACTS...New fire starts with cloud-to-ground lightning should be expected with any storms that develop. Gusty outflow winds will threaten fires with rapid growth. * THUNDERSTORMS...Any storms that develop will initially have little to no rainfall. * OUTFLOW WINDS...Gusts of 25 to 35 mph possible.

* WHAT...Hot conditions with temperatures 95-105 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...From noon today to 10 PM PDT Sunday. * 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...Hot conditions with temperatures 95-105 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...From noon today to 10 PM PDT Sunday. * 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 through Saturday, especially across lower elevations. * WHERE...In Idaho, Lower Treasure Valley ID. In Oregon, Oregon Lower Treasure Valley. * WHEN...Until midnight MDT Sunday night. * 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 through Saturday, especially across lower elevations. Hot conditions continue on Sunday for the Heat Advisory. * WHERE...Baker County. * WHEN...For the Excessive Heat Warning, until 11 PM PDT Saturday. For the Heat Advisory, from 11 PM Saturday to 11 PM PDT Sunday. * 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 through Saturday, especially across lower elevations. Hot conditions continue on Sunday for the Heat Advisory. * WHERE...In Idaho, Upper Weiser River. In Oregon, Malheur County. * WHEN...For the Excessive Heat Warning, until midnight MDT /11 PM PDT/ Saturday night. For the Heat Advisory, from midnight MDT /11 PM PDT/ Saturday night to midnight MDT /11 PM PDT/ Sunday night. * 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 through Saturday, especially across lower elevations. Hot conditions continue on Sunday for the Heat Advisory. * WHERE...Baker County. * WHEN...For the Excessive Heat Warning, until 11 PM PDT Saturday. For the Heat Advisory, from 11 PM Saturday to 11 PM PDT Sunday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Hot conditions through Saturday, especially across lower elevations. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until midnight MDT /11 PM PDT/ Saturday night. * 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 through Saturday, especially across lower elevations. Hot conditions continue on Sunday for the Heat Advisory. * WHERE...In Idaho, Upper Weiser River. In Oregon, Malheur County. * WHEN...For the Excessive Heat Warning, until midnight MDT /11 PM PDT/ Saturday night. For the Heat Advisory, from midnight MDT /11 PM PDT/ Saturday night to midnight MDT /11 PM PDT/ Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.