Aggregator

* WHAT...For the Excessive Heat Warning, dangerously hot conditions with temperatures 105-110, hottest in the lower elevations near the Snake River. For the Excessive Heat Watch, dangerously hot conditions with temperatures up to 103 possible. * WHERE...Baker County. * WHEN...For the Excessive Heat Warning, from 10 AM Tuesday to 11 PM PDT Wednesday. For the Excessive Heat Watch, from Thursday evening through Sunday evening. * 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 105-110 expected. For the Excessive Heat Watch, dangerously hot conditions with temperatures up to 106 possible. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Excessive Heat Warning, from 11 AM MDT /10 AM PDT/ Tuesday to midnight MDT /11 PM PDT/ Thursday night. For the Excessive Heat Watch, from late Thursday night through Sunday evening. * 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 105-110 expected. For the Excessive Heat Watch, dangerously hot conditions with temperatures up to 106 possible. * WHERE...Oregon Lower Treasure Valley. * WHEN...For the Excessive Heat Warning, from 2 PM Monday to midnight MDT Thursday night. For the Excessive Heat Watch, from late Thursday night through Sunday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...For the Heat Advisory, temperatures up to 100-103 expected. For the Excessive Heat Watch, dangerously hot conditions with temperatures up to 104 possible. * WHERE...Harney County. * WHEN...For the Heat Advisory, from 10 AM Tuesday to 11 PM PDT Thursday. For the Excessive Heat Watch, from Thursday evening through Sunday evening. * 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 105-110, hottest in the lower elevations near the Snake River. For the Excessive Heat Watch, dangerously hot conditions with temperatures up to 103 possible. * WHERE...Baker County. * WHEN...For the Excessive Heat Warning, from 10 AM Tuesday to 11 PM PDT Wednesday. For the Excessive Heat Watch, from Thursday evening through Sunday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Hot conditions during the day for the valleys. Highs will be in the 90s except near 100 in Stehekin. Overnight lows will be in 50s to low 60s. * WHERE...Stehekin, Holden Village, and Stevens Pass. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat illnesses.

* WHAT...Dangerously hot conditions during the day with little relief overnight. Highs 95 to 105 Monday, 100 to 108 Tuesday and Wednesday. Overnight lows will be in 60s to mid 70s. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat.

* WHAT...Dangerously hot conditions during the day for the valleys. Highs 95 to 103. Overnight lows will be in 50s to low 60s. * WHERE...Priest River, Orin-Rice Road, Wallace, Osburn, Pinehurst, Flowery Trail Road, Dobson Pass, Lookout Pass, Chesaw Road, Eastport, St. Maries, Highway 20 Wauconda Summit, Newport, Fruitland, Tiger, Inchelium, Metaline Falls, Northport, Wauconda, Colville, Kellogg, Kettle Falls, Ione, Fourth Of July Pass, Bonners Ferry, Fernwood, Deer Park, Sherman Pass, Schweitzer Mountain Road, Mullan, Springdale-Hunters Road, Sandpoint, Metaline, Republic, Clark Fork, Boulder Creek Road, Chewelah, and Athol. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat illnesses.

...HOT, DRY, UNSTABLE CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES MONDAY AND TUESDAY... The National Weather Service in Spokane has issued a Red Flag Warning for unstable thermal trough, which is in effect from noon Monday to 11 PM PDT Tuesday. * 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) and Fire Weather Zone 698 East Washington North Cascades (Zone 698). * Timing: 12 PM PDT Monday through 11 PM PDT Tuesday * Relative Humidities: Minimum values 8 to 16 percent in the valleys and 14 to 23 percent over the higher terrain. Poor overnight humidity recovery. * Temperatures: High temperatures 100 to 108 in the valleys, 80s and 90s in the mountains. * Impacts: Hot, dry, and unstable conditions will lead to the potential for rapid fire growth on any new or existing fires.

* WHAT...Dangerously hot conditions with temperatures between 100 and 105 degrees expected. Overnight temperatures will be slow to cool off each evening, only falling below 70 degrees for a short period each night, if at all depending on your location. The warm nighttime temperatures will limit chances to recover from the heat, exacerbating the risk of heat-related illness during this prolonged heat wave. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...The most intense portion of this heat wave has not yet occurred. The hottest temperatures are expected Monday and Tuesday, with Monday night being the warmest night.

* WHAT...Afternoon temperatures in the upper 80s to middle 90s expected. A few spots could reach close to 100 degrees, mainly the lower valleys located towards the Willamette Valley. * WHERE...In Oregon, North Oregon Cascades, Cascades of Lane County, and Cascades of Marion and Linn Counties. In Washington, South Washington Cascades. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

* WHAT...Dangerously hot conditions with temperatures between 100 and 105 degrees expected. Overnight temperatures will be slow to cool off each evening, only falling below 70 degrees for a short period each night, if at all depending on your location. The warm nighttime temperatures will limit chances to recover from the heat, exacerbating the risk of heat-related illness during this prolonged heat wave. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...The most intense portion of this heat wave has not yet occurred. The hottest temperatures are expected Monday and Tuesday, with Monday night being the warmest night.

* WHAT...Afternoon temperatures in the upper 80s to middle 90s expected. A few spots could reach close to 100 degrees, mainly the lower valleys located towards the Willamette Valley. * WHERE...In Oregon, North Oregon Cascades, Cascades of Lane County, and Cascades of Marion and Linn Counties. In Washington, South Washington Cascades. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

* 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 20 percent with moderate to poor overnight recovery. * TEMPERATURES...High temperatures 85 to 95 degrees with overnight lows in the 60s. * MID-LEVEL HAINES...6 * 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.

* IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...Fire weather zones 280...616, 617, 620, 621, 622, 623 & 624. This includes much of western Siskiyou County, Douglas County, northern and central Josephine County, Jackson County, most of Klamath County and western Lake County. * WIND...Northwest 10 to 15 mph with gusts as high as 25 mph. * HUMIDITY...7 to 15 percent. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...Dangerously hot conditions with limited overnight relief. Afternoon high temperatures of 95 to 105 degrees. Overnight low temperatures in the mid-50s to lower 70s. * WHERE...Lower Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Hottest temperatures during this long-duration heatwave are expected Tuesday.

* WHAT...Hot temperatures with modest overnight relief. Afternoon high temperatures of 90 to 105 degrees, highest in lower valleys and canyons. Overnight low temperatures in the low 50s to upper 60s, lowest in high valleys. * WHERE...Blue Mountains of Oregon and Washington, Grande Ronde Valley, and Wallowa County. * WHEN...From noon Monday to 10 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat-related illnesses. * ADDITIONAL DETAILS...Hottest temperatures during this long-duration heatwave are expected Tuesday and Wednesday.

* WHAT...Dangerously hot conditions with limited overnight relief. Afternoon high temperatures of 95 to 110 degrees. Overnight low temperatures in the upper 50s to mid-70s. * WHERE...Portions of north central and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Hottest temperatures during this long-duration heatwave are expected Tuesday.

* WHAT...Hot temperatures with modest overnight relief. Afternoon high temperatures of 90 to 105 degrees, highest along the East Slopes of the Oregon Cascades. Overnight low temperatures in the low 50s to upper 60s, lowest in valleys. * WHERE...In Oregon, East Slopes of the Oregon Cascades. In Washington, Upper Slopes of the Eastern Washington Cascades Crest. * WHEN...From noon Monday to 10 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat-related illnesses. * ADDITIONAL DETAILS...Hottest temperatures during this long-duration heatwave are expected Tuesday.

* WHAT...Dangerously hot conditions with limited overnight relief. Afternoon high temperatures of 95 to 110 degrees. Overnight low temperatures in the mid-50s to lower 70s. * WHERE...Central Oregon and John Day Basin. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Hottest temperatures during this long-duration heatwave are expected Tuesday.