DRY COLD FRONTAL PASSAGE SATURDAY
Critical 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. At the same time, minimum RHs across the area are well below 20%, down to 10% in the high desert. Winds increase overnight as RHs begin to rise out. Winds 20 to 25 mph with gusts up to 45 mph are possible from Baker County through the Lower Treasure Valley overnight Saturday. These strong winds occur as RHs rise out of critical dryness, however active fire behavior may be observed even past the Red Flag Warnings due to the winds.
The National Weather Service in Boise has issued a Red Flag Warning for winds and low relative humidities, which is in effect from 3 PM to 9 PM MDT Saturday. The Fire Weather Watch is no longer in effect.
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AFFECTED AREA: In Idaho, Fire Weather Zone 402 Eastern Payette National Forest.
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TIMING: From 3 PM to 9 PM MDT Saturday.
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WINDS: West 15 to 20 mph with gusts up to 35 mph.
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RELATIVE HUMIDITY: 15 to 21 percent.
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TEMPERATURES: 77 to 89 degrees.
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IMPACTS: Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
...DRY COLD FRONTAL PASSAGE SATURDAY... Critical 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. At the same time, minimum RHs across the area are well below 20%, down to 10% in the high desert. Winds increase overnight as RHs begin to rise out. Winds 20 to 25 mph with gusts up to 45 mph are possible from Baker County through the Lower Treasure Valley overnight Saturday. These strong winds occur as RHs rise out of critical dryness, however active fire behavior may be observed even past the Red Flag Warnings due to the winds. The National Weather Service in Boise has issued a Red Flag Warning for winds and low relative humidities, which is in effect from 3 PM to 9 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...In Idaho, Fire Weather Zone 402 Eastern Payette National Forest. * TIMING...From 3 PM to 9 PM MDT Saturday. * WINDS...West 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...15 to 21 percent. * TEMPERATURES...77 to 89 degrees. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will occur shortly.
- WHAT: Air Quality Advisory because of degraded air quality due to wildfire smoke.
Air Quality Index is forecast to be Unhealthy for Sensitive Groups.
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WHERE: Clearwater and Idaho Counties.
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WHEN: Until noon PDT August 3, 2026.
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IMPACTS: Members of sensitive groups may experience health effects. The general public is less likely to be affected.
* WHAT...Air Quality Advisory because of degraded air quality due to wildfire smoke. Air Quality Index is forecast to be Unhealthy for Sensitive Groups. * WHERE...Clearwater and Idaho Counties. * WHEN...Until noon PDT August 3, 2026. * IMPACTS...Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Air pollutants can cause breathing difficulties for children, the elderly, as well as persons with respiratory problems. Those individuals who are sensitive to increased particulate matter or smoke are encouraged to avoid prolonged or strenuous outdoor activity during this advisory. Open burning is prohibited by air quality rule. It is also recommended that all other individuals limit prolonged or strenuous activity outdoors. THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY, AIR QUALITY GROUP FOR MORE INFORMATION, CONTACT DEQ's Lewiston Regional Office at (208) 799-4370
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