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...BREEZY WINDS WITH LOW RH VALUES THROUGH WEDNESDAY... .An approaching system will result in breezy winds Tuesday and Wednesday as hot and dry conditions persist. Main concerns Tuesday are focused across Central Oregon, extending into Central Washington Wednesday. The National Weather Service in Pendleton has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Wednesday morning through Wednesday evening. * AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 691 Lower Columbia Basin of Washington, 692 Blue Mountains of Washington, 693 Canyon Grasslands of Wallowa County, 693 Southeast Washington Grande Ronde Valley, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * TIMING...From Wednesday morning through Wednesday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

...BREEZY WINDS WITH LOW RH VALUES THROUGH WEDNESDAY... .An approaching system will result in breezy winds Tuesday and Wednesday as hot and dry conditions persist. Main concerns Tuesday are focused across Central Oregon, extending into Central Washington Wednesday. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon Tuesday to 11 PM PDT Wednesday. * AFFECTED AREA...Fire Weather Zones 696 John Day Valley, 698 Southern Blue Mountains, 700 Central Mountains of Oregon, 703 Warm Springs Reservation, 704 Northern Deschutes National Forest and 705 Southern Deschutes National Forest. * TIMING...From noon Tuesday to 11 PM PDT Wednesday. * WINDS...West 10 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

...BREEZY WINDS WITH LOW RH VALUES THROUGH WEDNESDAY... .An approaching system will result in breezy winds Tuesday and Wednesday as hot and dry conditions persist. Main concerns Tuesday are focused across Central Oregon, extending into Central Washington Wednesday. The National Weather Service in Pendleton has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Wednesday morning through Wednesday evening. * AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 691 Lower Columbia Basin of Washington, 692 Blue Mountains of Washington, 693 Canyon Grasslands of Wallowa County, 693 Southeast Washington Grande Ronde Valley, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * TIMING...From Wednesday morning through Wednesday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

* WHAT...Temperatures up to 104 expected. * WHERE...Lower Treasure Valley Zones, and Malheur County. * WHEN...From noon MDT /11 AM PDT/ to 9 PM MDT /8 PM PDT/ Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses, especially for the young, elderly, and animals.

* WHAT...Dangerously hot temperatures of 100 to near 110 degrees with very warm overnight temperatures of 65 to 70 degrees. * WHERE...Portions of eastern Curry County, Josephine and Jackson Counties. This includes the communities of Agness, Grants Pass, Cave Junction, Williams, Ruch, Rogue River, Gold Hill, White City, Shady Cove, Medford, Jacksonville, Talent and Ashland. * WHEN...Until 2 AM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. Warm overnight temperatures will provide little relief from hot daytime temperatures.

* WHAT...Hot temperatures near 100 to 105 degrees with very warm overnight temperatures of 65 to 70 degrees. * WHERE...Portions of the Umpqua Basin in central Douglas County. This includes the communities of Camas Valley, Elkton, Drain, Sutherlin, Roseburg, Glendale, Riddle and Canyonville. * WHEN...Until 2 AM PDT Wednesday. * IMPACTS...Unusually hot temperatures will increase risk for heat illnesses. Warm overnight temperatures will provide little relief from daytime temperatures.

* WHAT...Hot temperatures of 95 to 100 degrees with warm overnight temperatures of 50 to 60 degrees. * WHERE...The Klamath Basin from Modoc Point southward into Modoc and eastern Siskiyou Counties. This includes the communities of Klamath Falls, Alturas, Tennant, Bray, Tulelake, Canby and Tionesta. * WHEN...Until 2 AM PDT Wednesday. * IMPACTS...Unusually hot temperatures will increase risk for heat illnesses. Warm overnight temperatures will provide little relief from daytime temperatures.

* WHAT...Hot conditions with high temperatures in the upper 80s to mid 90s and low temperatures in the 60s. This will pose a moderate risk of heat-related illness. * WHERE...Portions of northwest and west central Washington. * WHEN...Until 10 PM 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. * ADDITIONAL DETAILS...Heat will peak Monday along the outer coast of Washington and Tuesday for inland areas away from the coast.

* WHAT...Hot temperatures near 100 to 105 degrees with very warm overnight temperatures of 65 to 70 degrees. * WHERE...Portions of the Umpqua Basin in central Douglas County. This includes the communities of Camas Valley, Elkton, Drain, Sutherlin, Roseburg, Glendale, Riddle and Canyonville. * WHEN...Until 2 AM PDT Wednesday. * IMPACTS...Unusually hot temperatures will increase risk for heat illnesses. Warm overnight temperatures will provide little relief from daytime temperatures.

* WHAT...Hot temperatures of 95 to 100 degrees with warm overnight temperatures of 50 to 60 degrees. * WHERE...The Klamath Basin from Modoc Point southward into Modoc and eastern Siskiyou Counties. This includes the communities of Klamath Falls, Alturas, Tennant, Bray, Tulelake, Canby and Tionesta. * WHEN...From 11 AM this morning to 2 AM PDT Wednesday. * IMPACTS...Unusually hot temperatures will increase risk for heat illnesses. Warm overnight temperatures will provide little relief from daytime temperatures.

* WHAT...Dangerously hot temperatures of 100 to near 110 degrees with very warm overnight temperatures of 65 to 70 degrees. * WHERE...Portions of eastern Curry County, Josephine and Jackson Counties. This includes the communities of Agness, Grants Pass, Cave Junction, Williams, Ruch, Rogue River, Gold Hill, White City, Shady Cove, Medford, Jacksonville, Talent and Ashland. * WHEN...Until 2 AM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat. Warm overnight temperatures will provide little relief from hot daytime temperatures.

* WHAT...Temperatures as high as 93-98 degrees. Overnight temperatures of 60 to 65 degrees. * WHERE...North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Willapa and Wahkiakum Lowlands, and South Washington Cascade Foothills. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

* WHAT...Dangerously hot conditions with temperatures of 97 to 105 degrees. Overnight temperatures of 63 to 70 degrees. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Foothills of the Northern and Central Oregon Cascades. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

* WHAT...Temperatures as high as 93-98 degrees. Overnight temperatures of 60 to 65 degrees. * WHERE...North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Willapa and Wahkiakum Lowlands, and South Washington Cascade Foothills. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

* WHAT...Dangerously hot conditions with temperatures of 97 to 105 degrees. Overnight temperatures of 63 to 70 degrees. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Foothills of the Northern and Central Oregon Cascades. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

The National Weather Service in Medford has issued a Fire Weather Watch, which is in effect from Tuesday afternoon through Tuesday evening. * IMPACTS...Moderate to strong winds combined with critically low relative humidity can lead to rapid growth and spread of new and existing fires. Outdoor burning is banned during fire season. * AFFECTED AREA...The Fremont Winema National Forest in Fire Weather Zone 624, including from Klamath Falls to Chemult over to Lakeview. * WIND...Southwest 10 to 15 mph becoming west northwest 10 to 20 mph with gusts to 25 to 30 mph. * HUMIDITY...9 to 15 percent. * DETAILEDURL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

The National Weather Service in Medford has issued a Fire Weather Watch, which is in effect from Tuesday afternoon through Tuesday evening. * IMPACTS...Moderate to strong winds combined with critically low relative humidity can lead to rapid growth and spread of new and existing fires. Outdoor burning is banned during fire season. * AFFECTED AREA...Portions of the Rogue Valley in Fire Weather Zone 622, including Medford, White City, Gold Hill, Jacksonville, Talent, Phoenix, and Ashland. In Fire Weather Zone 620, portions of the Rogue and Illinois valleys, including Merlin, Grants Pass, Wilderville, Murphy and Provolt. * WIND...Northwest 10 to 15 mph with gusts of 20 to 25 mph. * HUMIDITY...10 to 15 percent. * DETAILEDURL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...Dangerously hot conditions with temperatures up to 103 possible. * WHERE...Portions of southwest Idaho and southeast Oregon. * WHEN...From Tuesday afternoon through Tuesday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Temperatures of 90-98 degrees F. Overnight temperatures of 59 to 65 degrees F. * WHERE...North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Willapa and Wahkiakum Lowlands, and South Washington Cascade Foothills. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Highest overnight temperatures north of Hwy 18 in Oregon.

* WHAT...Dangerously hot conditions with temperatures of 97 to 102 degrees F. Overnight temperatures of 63 to 70 degrees F. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Foothills of the Northern and Central Oregon Cascades. * WHEN...Until 10 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Highest temperatures will be on Monday, especially from Corvallis southward. Overnight conditions will begin to cool on Tuesday night into Wednesday.