Aggregator

* WHAT...Hot conditions with high temperatures ranging from the upper 80s to mid 90s and low temperatures in the mid 60s. This will pose a major risk of heat-related illness. * WHERE...City of Seattle, Eastside, and Lowlands of Pierce and Southern King Counties. * WHEN...Until 5 AM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

* WHAT...Very hot conditions with high temperatures of 100 to 107 degrees expected. Overnight low temperatures of 60 to 70 degrees. * WHERE...The valleys of Josephine and Jackson Counties. This includes Agness, Grants Pass, Cave Junction, Williams, Ruch, Rogue River, Gold Hill, White City, Shady Cove, Medford, Jacksonville, Talent and Ashland. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Unusually hot temperatures will increase risk for heat related illnesses. Warm overnight temperatures will provide little relief from hot daytime temperatures.

* WHAT...Hot conditions with high temperatures of 95 to 100 degrees expected. Overnight low temperatures of 50 to 65 degrees. * WHERE...In Oregon, all areas from the Cascades and Siskiyou Mountains eastward, including Union Creek, Lake of the Woods, Fish Lake, Howard Prairie, Klamath Falls, Chiloquin, Crescent, Fort Rock, Bly and Lakeview. In California, eastern Siskiyou County and all of Modoc County, including Dorris, Macdoel, Tulelake, Adin, Alturas and Likely. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat related illnesses.

* WHAT...Hot conditions with high temperatures of 95 to 104 degrees expected. Overnight low temperatures of 55 to 65 degrees. * WHERE...The valleys of central and eastern Douglas County. This includes Camas Valley, Elkton, Drain, Sutherlin, Roseburg, Glendale, Riddle, Canyonville, Tiller and Toketee Falls. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat related illnesses.

...HOT, DRY, AND UNSTABLE CONDITIONS FOR MONDAY AND TUESDAY... .A strong ridge of high pressure will bring a period of hot and dry conditions to the central and northern Cascades of Washington this weekend. The ridge will shift east of the Cascades early next week with the atmosphere becoming more unstable at that time. Increased instability with hot and dry conditions will bring the potential for critical fire weather conditions. * Affected Area: East Washington Central Cascades (Zone 696), East Portion of North Cascades National Park/Lake Chelan National Recreation Area (Zone 697), East Washington North Cascades (Zone 698) and Methow Valley (Zone 704). * Winds: East-southeast 3 to 7 mph in the afternoon becoming west 5 to 10 mph in the evening. * Timing: Afternoon and evening for both Monday and Tuesday. * Relative Humidities: Below 4,000 feet: 13 to 20 percent. Above 4,000 feet: 20 to 30 percent. * Temperatures: Below 4,000 feet: 90 to 102 degrees. Above 4,000 feet: 75 to 90 degrees. * Impacts: Hot, dry, and unstable conditions may lead to rapid fire growth on any new or existing fires.

* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet. * RELATIVE HUMIDITY...As low as 15 to 25 percent. * TEMPERATURES...Up to 90 to 100 degrees. * STABILITY...Unstable conditions can be expected. * IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.

* AFFECTED AREA...Fire Weather Zone 661 East Portion of the Olympic Mountains. * RELATIVE HUMIDITY...As low as 20 to 25 percent. * TEMPERATURES...Up to 90 to 95 degrees. * STABILITY...Unstable conditions can be expected. * IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.

* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet. * RELATIVE HUMIDITY...As low as 15 to 25 percent. * TEMPERATURES...Up to 90 to 100 degrees. * STABILITY...Unstable conditions can be expected. * IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.

* WHAT...Hot conditions with high temperatures ranging from the mid 80s to 90s expected and low temperatures mostly in the 60s. This will pose a moderate risk of heat-related illness. * WHERE...Portions of northwest and west central Washington. * WHEN...Until 5 AM PDT Tuesday. * 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 high temperatures ranging from the upper 80s to upper 90s and low temperatures mostly in the 60s. This will pose a major risk of heat-related illness. * WHERE...Foothills and Valleys of the North Cascades, Foothills and Valleys of Central King County, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Snohomish and Northern King Counties, and Foothills and Valleys of Thurston and Lewis Counties. * WHEN...Until 5 AM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

* WHAT...Hot conditions with high temperatures ranging from the mid 80s to 90s expected and low temperatures mostly in the 60s. This will pose a moderate risk of heat-related illness. * WHERE...Lake Crescent Area Including US 101. * WHEN...Until 5 AM PDT Tuesday. * 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 high temperatures ranging from the upper 80s to mid 90s and low temperatures in the mid 60s. This will pose a major risk of heat-related illness. * WHERE...City of Seattle, Eastside, and Lowlands of Pierce and Southern King Counties. * WHEN...Until 5 AM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

The Oregon Department of Environmental Quality and the Lane Regional Air Protection Agency have issued an Air Quality Advisory, which is in effect from 10 AM Saturday to 8 PM PDT Monday. An Air Quality Advisory for Smoke has been issued. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels due to smoke and ozone at times through 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.lrapa.org

The Oregon Department of Environmental Quality, and the Lane Regional Air Protection Agency have continued an Air Quality Advisory, which is in effect from 10 AM Saturday to 8 PM PDT Monday. An Air Quality Advisory for Ozone remains in effect. 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 Monday evening. Pollutants can cause burning eyes, runny nose, aggravate heart and lung diseases, and aggravate other serious health problems. Limit outdoor activities and keep children indoors. 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

* WHAT...Dangerously hot conditions with high temperatures up to 93-98F and overnight low temperatures of 60-68F possible. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon, North and Central Coast Range Valleys of Oregon, and Willapa and Wahkiakum Lowlands. * WHEN...Until 5 AM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially for those spending time outdoors or without access to adequate cooling. * ADDITIONAL DETAILS...Saturday will be the hottest day. Overnight lows as warm as the lower 70s are possible on the mid slopes of the Cascades.

* WHAT...Dangerously hot conditions with high temperatures up to 93-98F and overnight low temperatures of 60-68F possible. * WHERE...North and Central Coast Range Mountains of Oregon, and Willapa Hills. * WHEN...Until 5 AM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially for those spending time outdoors or without access to adequate cooling. * ADDITIONAL DETAILS...Saturday will be the hottest day.

* WHAT...Dangerously hot conditions with high temperatures of 97-103F and overnight low temperatures of 60-70F expected, except low to mid 70s in the Columbia River Gorge. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, Foothills of the Northern and Central Oregon Cascades, Lower Columbia River and Cowlitz River Valleys, and South Washington Cascade Foothills. * WHEN...Until 11 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially for those spending time outdoors or without access to adequate cooling. * ADDITIONAL DETAILS...Saturday and Sunday will be the hottest days. The warmest overnight lows are expected to occur in the Columbia River Gorge and in urban areas from Salem northward.

* WHAT...Dangerously hot conditions with high temperatures up to 93-98F and overnight low temperatures of 60-68F possible. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon, North and Central Coast Range Valleys of Oregon, and Willapa and Wahkiakum Lowlands. * WHEN...Until 5 AM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially for those spending time outdoors or without access to adequate cooling. * ADDITIONAL DETAILS...Saturday will be the hottest day. Overnight lows as warm as the lower 70s are possible on the mid slopes of the Cascades.

* WHAT...Dangerously hot conditions with high temperatures of 97-103F and overnight low temperatures of 60-70F expected, except low to mid 70s in the Columbia River Gorge. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, Foothills of the Northern and Central Oregon Cascades, Lower Columbia River and Cowlitz River Valleys, and South Washington Cascade Foothills. * WHEN...Until 11 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially for those spending time outdoors or without access to adequate cooling. * ADDITIONAL DETAILS...Saturday and Sunday will be the hottest days. The warmest overnight lows are expected to occur in the Columbia River Gorge and in urban areas from Salem northward.

* WHAT...Dangerously hot conditions with high temperatures up to 93-98F and overnight low temperatures of 60-68F possible. * WHERE...North and Central Coast Range Mountains of Oregon, and Willapa Hills. * WHEN...Until 5 AM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, especially for those spending time outdoors or without access to adequate cooling. * ADDITIONAL DETAILS...Saturday will be the hottest day.