Aggregator

* 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 mid 50s to upper 60s, lowest in high valleys. This will pose a moderate risk of heat-related illness. * WHERE...Blue Mountains of Oregon and Washington, Grande Ronde Valley, and Wallowa County. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat-related illnesses. * ADDITIONAL DETAILS...Hottest temperatures during this long-duration heatwave are expected Today and Wednesday.

* 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. This will pose a major risk of heat-related illness. * 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 Today.

* 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. This will pose a moderate risk of heat-related illness. * WHERE...In Oregon, East Slopes of the Oregon Cascades. In Washington, Upper Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat-related illnesses. * ADDITIONAL DETAILS...Hottest temperatures during this long-duration heatwave are expected Today.

...HOT, DRY, UNSTABLE CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES TODAY... ...RED FLAG WARNING FOR WIND AND LOW HUMIDITY WEDNESDAY AFTERNOON AND EVENING IN CENTRAL WASHINGTON... The National Weather Service in Spokane has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 11 PM PDT Wednesday. The Fire Weather Watch is no longer in effect. * Affected Area: Fire Weather Zone 703 Okanogan Valley (Zone 703), Fire Weather Zone 704 Methow Valley (Zone 704), Fire Weather Zone 705 Foothills of Central Washington Cascades (Zone 705), Fire Weather Zone 706 Waterville Plateau (Zone 706) and Fire Weather Zone 707 Western Columbia Basin (Zone 707). * Winds: West 10 to 20 mph with gusts up to 35 mph. * Relative Humidities: 8 to 14 percent. * Temperatures: Up to 106. * Impacts: Any new or existing fires will have the potential to spread rapidly.

...HOT, DRY, UNSTABLE CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES TODAY... ...RED FLAG WARNING FOR WIND AND LOW HUMIDITY WEDNESDAY AFTERNOON AND EVENING IN CENTRAL WASHINGTON... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE CENTRAL AND NORTHERN CASCADES (FIRE WEATHER ZONES 696, 697)... The National Weather Service in Spokane has issued a Red Flag Warning for Gusty Wind and low relative humidity, which is in effect from 2 PM to 11 PM PDT Wednesday. The Fire Weather Watch is no longer in effect. This is in addition to the ongoing Red Flag warning for Hot, Dry, and Unstable conditions that is in effect today until 11 pm tonight. * 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). * Winds: West 10 to 20 mph with gusts up to 35 mph. * Relative Humidities: 7 to 20 percent in the valleys and 20 to 32 percent over the higher terrain. * Temperatures: High temperatures 100 to 108 in the valleys, 80s and 90s in the mountains. * Impacts:hot, dry, and unstable conditions through 11 pm tonight then wind on Wednesday will lead to the potential for rapid fire growth on any new or existing fires.

...HOT, DRY, UNSTABLE CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES TODAY... ...RED FLAG WARNING FOR WIND AND LOW HUMIDITY WEDNESDAY AFTERNOON AND EVENING IN CENTRAL WASHINGTON... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE CENTRAL AND NORTHERN CASCADES (FIRE WEATHER ZONES 696, 697)... The National Weather Service in Spokane has issued a Red Flag Warning for Gusty Wind and low relative humidity, which is in effect from 2 PM to 11 PM PDT Wednesday. The Fire Weather Watch is no longer in effect. This is in addition to the ongoing Red Flag warning for Hot, Dry, and Unstable conditions that is in effect today until 11 pm tonight. * 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). * Winds: West 10 to 20 mph with gusts up to 35 mph. * Relative Humidities: 7 to 20 percent in the valleys and 20 to 32 percent over the higher terrain. * Temperatures: High temperatures 100 to 108 in the valleys, 80s and 90s in the mountains. * Impacts:hot, dry, and unstable conditions through 11 pm tonight then wind on Wednesday will lead to the potential for rapid fire growth on any new or existing fires.

...HOT, DRY, UNSTABLE CONDITIONS ALONG THE EAST SLOPES OF THE CASCADES TODAY... ...RED FLAG WARNING FOR WIND AND LOW HUMIDITY WEDNESDAY AFTERNOON AND EVENING IN CENTRAL WASHINGTON... * Affected Area: Fire Weather Zone 698 East Washington North Cascades (Zone 698). * Relative Humidities: 8 to 23 percent. * Temperatures: High temperatures 97 to 104 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.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM Wednesday to 8 PM PDT Thursday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 690 Kittitas Valley. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Breezy conditions combined with low RHs will result in rapid fire spread and extreme fire behavior.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 11 PM PDT Wednesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Breezy conditions combined with low RHs will result in rapid fire spread and extreme fire behavior.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. * AFFECTED AREA...Fire Weather Zones 642 Southern Blue and Strawberry Mountains, 643 Northern Blue Mountains of Oregon, 644 Central Blue Mountains, 645 Wallowa District, 692 Blue Mountains of Washington and 693 Southeast Washington Grande Ronde Valley. * TIMING...Tuesday afternoon through Wednesday evening. * WINDS...Northwest 10 to 15 mph. * RELATIVE HUMIDITY...As low as 9 percent. * TEMPERATURES...Up to 100. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * HAINES...As high as 6.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. * AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central Oregon Cascades, 611 Deschutes National Forest -minus Sisters Ranger District, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * TIMING...Through Tuesday night. * WINDS...Northwest 5 to 10 mph. * RELATIVE HUMIDITY...As low as 11 percent. * TEMPERATURES...Up to 101. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * HAINES...As high as 6.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 11 PM PDT Wednesday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Breezy conditions combined with low RHs will result in rapid fire spread and extreme fire behavior.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. * AFFECTED AREA...Fire Weather Zones 642 Southern Blue and Strawberry Mountains, 643 Northern Blue Mountains of Oregon, 644 Central Blue Mountains, 645 Wallowa District, 692 Blue Mountains of Washington and 693 Southeast Washington Grande Ronde Valley. * TIMING...Tuesday afternoon through Wednesday evening. * WINDS...Northwest 10 to 15 mph. * RELATIVE HUMIDITY...As low as 9 percent. * TEMPERATURES...Up to 100. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * HAINES...As high as 6.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. The National Weather Service in Pendleton has issued a Red Flag Warning for dry and unstable conditions followed by breezy winds and low relative humidity, which is in effect Tuesday and Wednesday. * AFFECTED AREA...Fire Weather Zones 639 East Slopes of the Northern Oregon Cascades and 640 Central Mountains of Oregon. * TIMING...Today through Wednesday night. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 7 percent. * TEMPERATURES...Up to 104. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * HAINES...As high as 6.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. * AFFECTED AREA...Fire Weather Zones 610 East Slopes of Central Oregon Cascades, 611 Deschutes National Forest -minus Sisters Ranger District, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * TIMING...Through Tuesday night. * WINDS...Northwest 5 to 10 mph. * RELATIVE HUMIDITY...As low as 11 percent. * TEMPERATURES...Up to 101. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * HAINES...As high as 6.

...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS TUESDAY THROUGH THURSDAY... High pressure that has brought the hot temperatures the past weekend is showing signs of breaking down. The instability will increase as a result, and the combination of hot, dry and unstable weather warrants Red Flag Warnings. In addition, breezy winds will develop through the Cascade gaps and into portions of the Columbia Basin Wednesday and Thursday, and will coincide with low relative humidities in the afternoon and evening. The National Weather Service in Pendleton has issued a Red Flag Warning for dry and unstable conditions followed by breezy winds and low relative humidity, which is in effect Tuesday and Wednesday. * AFFECTED AREA...Fire Weather Zones 639 East Slopes of the Northern Oregon Cascades and 640 Central Mountains of Oregon. * TIMING...Today through Wednesday night. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 7 percent. * TEMPERATURES...Up to 104. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * HAINES...As high as 6.

* WHAT...For the Excessive Heat Warning, dangerously hot conditions through Friday expected, especially in the lower elevations. For the Excessive Heat Watch, dangerously hot conditions possible. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Excessive Heat Warning, until midnight MDT /11 PM PDT/ Friday night. For the Excessive Heat Watch, from late Friday 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. * ADDITIONAL DETAILS...Temperatures of 103 to 110 expected for lower elevations through Friday.

* WHAT...For the Heat Advisory, hot temperatures expected in the lower elevations. For the Excessive Heat Watch, dangerously hot conditions possible. * WHERE...Southwest Highlands, Western Magic Valley and Southern Twin Falls County. * WHEN...For the Heat Advisory, until midnight MDT Friday night. For the Excessive Heat Watch, from late Friday 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. * ADDITIONAL DETAILS...Temperatures of 100 to 104 for lower elevations expected.

* WHAT...For the Excessive Heat Warning, dangerously hot conditions through Friday expected, especially in the lower elevations. For the Excessive Heat Watch, dangerously hot conditions possible. * WHERE...Baker County. * WHEN...For the Excessive Heat Warning, until 11 PM PDT Friday. For the Excessive Heat Watch, from Friday 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. * ADDITIONAL DETAILS...Temperatures of 103 to 110 expected for lower elevations through Friday, except slightly cooler temperatures expected Thursday.

* WHAT...For the Heat Advisory, hot temperatures expected in the lower elevations. For the Excessive Heat Watch, dangerously hot conditions possible. * WHERE...Southwest Highlands, Western Magic Valley and Southern Twin Falls County. * WHEN...For the Heat Advisory, until midnight MDT Friday night. For the Excessive Heat Watch, from late Friday 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. * ADDITIONAL DETAILS...Temperatures of 100 to 104 for lower elevations expected.