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FFWOTX The National Weather Service in Spokane has issued a * Flash Flood Warning for the 25 Mile Burn Scar in Central Chelan County in north central Washington... * Until 1145 AM PDT. * At 845 AM PDT, Doppler radar indicated thunderstorms producing heavy rain over the 25 Mile Burn Scar. Between 0.25 and 0.8 inches of rain have fallen. The expected rainfall rate is 0.25 to 0.5 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the warning area will cause mud slides near steep terrain. The mud slide can consist of rock, mud, vegetation and other loose materials. HAZARD...Flash flooding caused by thunderstorms in and around the 25 Mile Burn Scar. SOURCE...Radar. IMPACT...Flooding of areas in and around the 25 Mile Burn Scar. * Some locations that will experience flash flooding include... Ramona Park Campground, 25 Mile Creek State Park and Grouse Mountain Campground.

...SCATTERED LIGHTNING EXPECTED MONDAY NIGHT THROUGH TUESDAY EVENING IN OR 646 AND ID 400, 401, 402, AND 403... .An upper level shortwave will move through the area Monday night through Tuesday with favorable dynamics for nocturnal convection. Storms and showers will begin developing to the southwest of the Warning area and by the time they move in early Tuesday morning, the terrain should provide enough lift for scattered thunderstorms embedded in showers. The National Weather Service in Boise has upgraded the Fire Weather Watch to a Red Flag Warning for lightning, which is in effect from midnight MDT /11 PM PDT/ tonight to 9 PM MDT /8 PM PDT/ Tuesday. * Thunderstorms...Scattered. * Outflow Winds...Gusts up to 50 mph possible. * Timing...From midnight MDT /11 PM PDT/ tonight to 9 PM MDT /8 PM PDT/ Tuesday.

...SCATTERED LIGHTNING EXPECTED MONDAY NIGHT THROUGH TUESDAY EVENING IN OR 646 AND ID 400, 401, 402, AND 403... .An upper level shortwave will move through the area Monday night through Tuesday with favorable dynamics for nocturnal convection. Storms and showers will begin developing to the southwest of the Warning area and by the time they move in early Tuesday morning, the terrain should provide enough lift for scattered thunderstorms embedded in showers. The National Weather Service in Boise has issued a Red Flag Warning for lightning, which is in effect from midnight MDT /11 PM PDT/ tonight to 9 PM MDT /8 PM PDT/ Tuesday. * Thunderstorms...Scattered. * Outflow Winds...Gusts up to 50 mph possible. * Timing...From midnight MDT /11 PM PDT/ tonight to 9 PM MDT /8 PM PDT/ Tuesday.

...LIGHTNING IN AND NEAR CASCADES THROUGH THIS EVENING... Thunderstorms will persist at times through this evening over portions of the east slopes of the Cascades to the Okanogan Highlands. Abundant lightning with frequent cloud to ground lightning strikes is expected. Thunderstorms will bring the potential for strong outflow winds. Lightning is expected to result in new fire starts and outflow winds may result in rapid fire spread of any new or ongoing fires. * Affected Area: Fire Weather Zone 698 East Washington North Cascades (Zone 698), Fire Weather Zone 699 Okanogan Highlands and Kettle Mountains (Zone 699), Fire Weather Zone 703 Okanogan Valley (Zone 703) and Fire Weather Zone 704 Methow Valley (Zone 704). * Thunderstorms: Abundant lightning with frequent cloud to ground lightning strikes. A brief lull in lighting activity may occur late this morning and early afternoon. * Outflow Winds: Gusty and erratic outflow winds of up to 40 mph will be possible. * Impacts: Lightning may result in new fire starts. Gusty outflow winds will be capable of rapid fire spread and causing erratic wind directions.

...LIGHTNING IN AND NEAR CASCADES THROUGH THIS EVENING... Thunderstorms will persist at times through this evening over portions of the east slopes of the Cascades to the Okanogan Highlands. Abundant lightning with frequent cloud to ground lightning strikes is expected. Thunderstorms will bring the potential for strong outflow winds. Lightning is expected to result in new fire starts and outflow winds may result in rapid fire spread of any new or ongoing 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). * Thunderstorms: Abundant lightning with frequent cloud to ground lightning strikes. * Outflow Winds: Gusty and erratic outflow winds of up to 40 mph will be possible. * Impacts: Lightning may result in new fire starts. Gusty outflow winds will be capable of rapid fire spread and causing erratic wind directions.

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of North Central and Northeast Washington, including the following counties, in North Central Washington, Okanogan. In Northeast Washington, Ferry. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations including burn scars. * ADDITIONAL DETAILS... - Slow moving thunderstorms producing localized heavy rainfall are expected today through this evening. - http://www.weather.gov/safety/flood

..AIR QUALITY ADVISORY IN EFFECT UNTIL 1 PM PDT MONDAY... The Oregon Department of Environmental Quality and the Lane Regional Air Protection Agency have continued an Air Quality Advisory, which is in effect until 1 PM PDT Monday. 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 through at least 1 PM PDT Monday. 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

...LIGHTNING IN AND NEAR CASCADES TODAY THROUGH MONDAY... Additional rounds of thunderstorms will develop this afternoon through Monday over the east slopes of the Cascades to the Okanogan Highlands. Abundant lightning with frequent cloud to ground lightning strikes is expected. Thunderstorms will also bring the potential for strong outflow winds. Lightning is expected to result in new fire starts and outflow winds may result in rapid fire spread of any new or ongoing fires. * Affected Area: Fire Weather Zone 696 East Washington Central Cascades (Zone 696), Fire Weather Zone 697 East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697), Fire Weather Zone 698 East Washington North Cascades (Zone 698), Fire Weather Zone 699 Okanogan Highlands and Kettle Mountains (Zone 699), Fire Weather Zone 703 Okanogan Valley (Zone 703) and Fire Weather Zone 704 Methow Valley (Zone 704). * Thunderstorms: Abundant lightning with frequent cloud to ground lightning strikes. A lull in lightning activity is expected late Sunday night into Monday morning before lightning activity increases again Monday afternoon into Monday evening. * Outflow Winds: Gusty and erratic outflow winds of up to 40 mph will be possible. * Impacts: Lightning may result in new fire starts. Gusty outflow winds will be capable of rapid fire spread and causing erratic wind directions.

..AIR QUALITY ADVISORY IN EFFECT UNTIL 1 PM PDT MONDAY... The Oregon Department of Environmental Quality and the Lane Regional Air Protection Agency have continued an Air Quality Advisory, which is in effect until 1 PM PDT Monday. 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 through at least 1 PM PDT Monday. 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

...SCATTERED LIGHTNING EXPECTED MONDAY NIGHT THROUGH TUESDAY EVENING IN OR 646 AND ID 400, 401, 402, AND 403... .An upper level shortwave will move through the area Monday night through Tuesday with favorable dynamics for nocturnal convection. Storms and showers will begin developing to the south of the Watch area and by the time they move in early Tuesday morning, the terrain should provide enough lift for scattered thunderstorms embedded in showers. The National Weather Service in Boise has issued a Fire Weather Watch for lightning, which is in effect from late Monday night through Tuesday afternoon. * Thunderstorms...Scattered. * Outflow Winds...Gusts to 40 mph possible. * Timing...From late Monday night through Tuesday afternoon.

Jackson County Public Health has issued an air quality advisory for Jackson County...in effect until at least 8 PM PDT Monday, August 12. 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

Oregon Department of Environmental Quality has issued an Air Pollution Advisory...in effect until at least 3 PM PDT on Monday, August 12. The Oregon Department of Environmental Quality issued an air quality advisory for Lake, Klamath, and central and eastern Douglas counties due to wildfires burning in the region. The DEQ also expects intermittent smoke in Josephine County through this period 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

...LIGHTNING IN AND NEAR CASCADES TODAY THROUGH MONDAY... Additional rounds of thunderstorms will develop this afternoon through Monday over the east slopes of the Cascades to the Okanogan Highlands. Abundant lightning with frequent cloud to ground lightning strikes is expected. Thunderstorms will also bring the potential for strong outflow winds. Lightning is expected to result in new fire starts and outflow winds may result in rapid fire spread of any new or ongoing fires. The National Weather Service in Spokane has issued a Red Flag Warning for thunderstorms, which is in effect from 1 PM this afternoon to 11 PM PDT Monday. * Affected Area: Fire Weather Zone 696 East Washington Central Cascades (Zone 696), Fire Weather Zone 697 East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697), Fire Weather Zone 698 East Washington North Cascades (Zone 698), Fire Weather Zone 699 Okanogan Highlands and Kettle Mountains (Zone 699), Fire Weather Zone 703 Okanogan Valley (Zone 703) and Fire Weather Zone 704 Methow Valley (Zone 704). * Thunderstorms: Abundant lightning with frequent cloud to ground lightning strikes. A lull in lightning activity is expected late Sunday night into Monday morning before lightning activity increases again Monday afternoon into Monday evening. * Outflow Winds: Gusty and erratic outflow winds of up to 40 mph will be possible. * Impacts: Lightning may result in new fire starts. Gusty outflow winds will be capable of rapid fire spread and causing erratic wind directions.

..AIR QUALITY ADVISORY IN EFFECT UNTIL 1 PM PDT MONDAY... The Oregon Department of Environmental Quality and the Lane Regional Air Protection Agency have continued an Air Quality Advisory, which is in effect until 1 PM PDT Monday. 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 through at least 1 PM PDT Monday. 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

..AIR QUALITY ADVISORY IN EFFECT UNTIL 1 PM PDT MONDAY... The Oregon Department of Environmental Quality and the Lane Regional Air Protection Agency have continued an Air Quality Advisory, which is in effect until 1 PM PDT Monday. 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 through at least 1 PM PDT Monday. 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

...WIDELY SCATTERED STORMS WITH FREQUENT LIGHTNING THIS AFTERNOON AND EVENING... .Widely scattered thunderstorms are anticipated to develop this afternoon and evening and will be capable of producing frequent cloud-to-ground lighting and strong wind gusts up to 45 mph. While chances of wetting rain with storms that materialize are elevated at 50% or more, a higher storm coverage is anticipated compared to yesterday/Friday with an overall higher lightning risk. Of which, rainfall amounts approaching 0.25 inches will be likely with some storms due to slow storm motion of around 5-15 mph. Higher wetting rainfall amounts above 0.25 inches cannot be ruled out for storms with much slower movement. * AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * THUNDERSTORMS...Abundant lightning with frequent cloud-to-ground lightning strikes. * OUTFLOW WINDS...Gusty winds up to 45 mph. * IMPACTS...Lightning may result in new fire starts. Gusty outflow winds will be capable of rapid fire spread and causing erratic wind directions.

...WIDELY SCATTERED STORMS WITH FREQUENT LIGHTNING THIS AFTERNOON AND EVENING... .Widely scattered thunderstorms are anticipated to develop this afternoon and evening capable of producing frequent cloud to ground lighting and strong wind gusts up to 45 mph. While chances of wetting rain with storms that materialize are elevated at 50% or more, a higher storm coverage is anticipated compared to yesterday/Friday with an overall higher lightning risk. Of which, rainfall amounts approaching 0.25 inches will be likely with some storms due to storms moving around 5-15 mph. Higher wetting rainfall amounts above 0.25 inches cannot be ruled out for storms with much slower movement. The National Weather Service in Pendleton has issued a Red Flag Warning for abundant lightning, which is in effect from 11 AM this morning to 10 PM PDT this evening. * AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * THUNDERSTORMS...Abundant lightning with frequent cloud to ground lightning strikes. * OUTFLOW WINDS...Gusty winds up to 45 mph. * IMPACTS...Lightning may result in new fire starts. Gusty outflow winds will be capable of rapid fire spread and causing erratic wind directions.

The Oregon Department of Environmental Quality has issued an Air Quality Advisory, which is in effect until 8 PM PDT Saturday. An Air Quality Advisory for Ozone has been issued. High levels of ozone in the lower atmosphere in the region combined with forecasted conditions will cause air quality to reach unhealthy levels at times through 8 PM PDT Saturday. 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

The Oregon Department of Environmental Quality and the Lane Regional Air Protection Agency have continued an Air Quality Advisory, which is in effect until 1 PM PDT Monday. 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 through at least 1 PM PDT Monday. 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

Showers and thunderstorms have developed this afternoon across the Washington Cascade crests. These storms have produced abundant lighting and heavy downpours at times, with as much as an inch an hour reported near Stevens Pass. While these storms are largely expected to remain over the wilderness, those outdoors should consider finding shelter until storms dissipate. Those with friends or loved ones hiking or camping in the area should reach out if possible, as these storms could produce minor flooding in canyons or deep valleys, combined with the threat of lightning and even small hail.