开始于: 2026-07-30, 07:13
到: 2026-07-31, 13:00

...DRY COLD FRONTAL PASSAGE SATURDAY... Elevated fire weather conditions as a dry cold front moves through the region. Winds begin to rise Saturday afternoon, although mostly remain 15 to 20 mph with 25 to 30 mph gusts. The frontal passage itself will occur overnight, bringing 30 to 40 mph gusts through Eastern Oregon. At the same time, minimum RHs across the area are well below 20%, down to 10% in the high desert. While the winds here increase overnight, RHs rise out of the 10-20% range with cooling temps. Thus, while the watch is limited to Saturday afternoon and evening, gusty winds will continue overnight including areas currently outside the fire weather watch. The National Weather Service in Boise has issued a Fire Weather Watch for winds and low relative humidities, which is in effect from Saturday afternoon through Saturday evening. * AFFECTED AREA...In Oregon, Fire Weather Zones 673 Central Canyonlands, 674 Northwestern Vale BLM and 675 Baker Valley. * TIMING...From Saturday afternoon through Saturday evening. * WINDS...West 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...12 to 18 percent. * TEMPERATURES...89 to 97 degrees. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

开始于: 2026-07-31, 10:03
到: 2026-07-31, 23:00

...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG IN EFFECT 2PM UNTIL 8PM SATURDAY FOR THE FOLLOWING AREAS: KITTITAS VALLEY (ZONE 690), LOWER COLUMBIA BASIN OF OREGON AND WASHINGTON (ZONE 691), NORTHERN BLUE MOUNTAINS OF OREGON AND WASHINGTON (ZONE 692), CANYON GRASSLANDS OF WALLOWA COUNTY AND SOUTHEAST WASHINGTON GRANDE RONDE VALLEY (ZONE 693), GRANDE RONDE VALLEY OF OREGON (ZONE 694), EAGLE CAP WILDERNESS (ZONE 695), JOHN DAY VALLEY (ZONE 696), AND CENTRAL MOUNTAINS OF OREGON (ZONE 700)... .A strong cold front will pass through the Pacific and Inland Northwest on Saturday. Very warm, dry, and windy conditions will result, leading to extreme fire weather concerns and the potential for rapid fire spread for any new or ongoing fires. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 11 PM PDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 691 Lower Columbia Basin of Oregon, 691 Lower Columbia Basin of Washington, 692 Northern Blue Mountains of Oregon, 692 Blue Mountains of Washington, 693 Canyon Grasslands of Wallowa County, 693 Southeast Washington Grande Ronde Valley, 694 Grande Ronde Valley of Oregon, 695 Eagle Cap Wilderness, 696 John Day Valley, 697 Central Blue Mountains, 698 Southern Blue Mountains, 699 Western Forested Blue Mountains and 700 Central Mountains of Oregon. * TIMING...From 11 AM to 11 PM PDT Saturday. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

开始于: 2026-07-31, 11:02
到: 2026-08-03, 14:00

* WHAT...High concentration of smoke particulates from wildfires * WHERE...Baker, Harney, and northern Malheur Counties. * WHEN...UNTIL 2 PM PDT MONDAY. * IMPACTS...Smoke can irritate the eyes, lungs and worsen some medical conditions. People most at risk to adverse health effects include infants, young children, people with heart or lung disease, older adults, and pregnant women. * ADDITIONAL DETAILS...Smoke levels can change rapidly depending on weather. Check current conditions on the Oregon Smoke Information Blog, DEQ's Air Quality Index, or by downloading the free OregonAIR app on your smartphone.