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...HOT, DRY AND UNSTABLE ALONG WITH BREEZY WINDS THROUGH THURSDAY... The high pressure driving this ongoing heat wave will begin to weaken today, but will result in breezy and unstable conditions through at least Thursday. Even as temperatures cool down slightly over the coming days, relative humidities will remain very low in the teens and single digits. This, combined with incoming breezy conditions through the Cascade Gaps and spreading into the Basin, will result in critical fire weather conditions. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 12 to 20 mph with gusts up to 30 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 THROUGH THURSDAY... The high pressure driving this ongoing heat wave will begin to weaken today, but will result in breezy and unstable conditions through at least Thursday. Even as temperatures cool down slightly over the coming days, relative humidities will remain very low in the teens and single digits. This, combined with incoming breezy conditions through the Cascade Gaps and spreading into the Basin, will result in critical fire weather conditions. * 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 12 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 THROUGH THURSDAY... The high pressure driving this ongoing heat wave will begin to weaken today, but will result in breezy and unstable conditions through at least Thursday. Even as temperatures cool down slightly over the coming days, relative humidities will remain very low in the teens and single digits. This, combined with incoming breezy conditions through the Cascade Gaps and spreading into the Basin, will result in critical fire weather conditions. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 12 to 20 mph with gusts up to 30 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 THROUGH THURSDAY... The high pressure driving this ongoing heat wave will begin to weaken today, but will result in breezy and unstable conditions through at least Thursday. Even as temperatures cool down slightly over the coming days, relative humidities will remain very low in the teens and single digits. This, combined with incoming breezy conditions through the Cascade Gaps and spreading into the Basin, will result in critical fire weather conditions. * 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 12 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 THROUGH THURSDAY... The high pressure driving this ongoing heat wave will begin to weaken today, but will result in breezy and unstable conditions through at least Thursday. Even as temperatures cool down slightly over the coming days, relative humidities will remain very low in the teens and single digits. This, combined with incoming breezy conditions through the Cascade Gaps and spreading into the Basin, will result in critical fire weather conditions. * AFFECTED AREA...Fire Weather Zones 639 East Slopes of the Northern Oregon Cascades and 640 Central Mountains of Oregon. * TIMING...Through Wednesday night. * WINDS...Northwest 12 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * TEMPERATURES...Up to 100. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. Breezy conditions may also lead to rapid fire spread. * HAINES...As high as 5.

* WHAT...Hot temperatures with modest overnight relief. Afternoon high temperatures as high as 100 degrees, highest in lower valleys and canyons. Overnight low temperatures in the mid 50s to upper 60s, lowest in high valleys. * WHERE...Blue Mountains of Oregon and Washington, Grande Ronde Valley, and Wallowa County. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat-related illnesses.

* WHAT...Dangerously hot conditions with limited overnight relief. Afternoon high temperatures could reach as high as 110 degrees. Overnight low temperatures in the 60s to mid-70s. * WHERE...Portions of north central and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events.

* WHAT...Dangerously hot conditions with limited overnight relief. Afternoon high temperatures could reach as high as 100 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 this evening. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events.

* WHAT...Hot temperatures with modest overnight relief. Afternoon high temperatures as high as 100 degrees, highest in lower valleys and canyons. Overnight low temperatures in the mid 50s to upper 60s, lowest in high valleys. * WHERE...Blue Mountains of Oregon and Washington, Grande Ronde Valley, and Wallowa County. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat-related illnesses.

* WHAT...Dangerously hot conditions with limited overnight relief. Afternoon high temperatures could reach as high as 110 degrees. Overnight low temperatures in the 60s to mid-70s. * WHERE...Portions of north central and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events.

* WHAT...Dangerously hot conditions with limited overnight relief. Afternoon high temperatures could exceed 100 degrees. Overnight low temperatures in the mid-50s to lower 70s. * WHERE...Central Oregon and John Day Basin. * WHEN...Until 10 PM PDT this evening. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events.

...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 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: As low as 8 percent. * Temperatures: Up to 108. * 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... * 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 30 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 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 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. * 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 12 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 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 639 East Slopes of the Northern Oregon Cascades and 640 Central Mountains of Oregon. * TIMING...Through Wednesday night. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * TEMPERATURES...Up to 97. * 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 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 12 percent. * TEMPERATURES...Up to 100. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * HAINES...As high as 6.

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