с: 30.07.2026, 08:13
к: 31.07.2026, 14:00

...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 Idaho, Fire Weather Zone 402 Eastern Payette National Forest. * TIMING...From Saturday afternoon through Saturday evening. * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...13 to 19 percent. * TEMPERATURES...79 to 89 degrees. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

с: 30.07.2026, 12:11
к: 31.07.2026, 06:00

...GUSTY WINDS AND LOW HUMIDITY EXPECTED THIS WEEKEND... .A building ridge to the south combined with a trough moving across western Canada will tighten the pressure gradient over the area through the weekend creating breezy to windy conditions for the weekend. This combined with warming temperatures and low humidity will lead to high fire danger across much of eastern Idaho. The National Weather Service in Pocatello has issued a Fire Weather Watch for gusty winds and low relative humidity, which is in effect from Saturday afternoon through Sunday evening. * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 422 Sawtooth Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake River Valley/Twin Falls BLM north of the Snake River, Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * WINDS...West 15 to 25 mph with gusts up to 40 mph during the afternoon and evening hours. * RELATIVE HUMIDITY...5 to 12 percent during the afternoon and early evenings. * IMPACTS...Moderate wind and very low humidity can lead to rapid spread of fire and more intense fire in receptive fuels.

с: 29.07.2026, 11:35
к: 31.07.2026, 13:00

* WHAT...Air Quality Advisory because of degraded air quality. Air Quality Index is forecast to be Very Unhealthy. * WHERE...Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette, Valley, and Washington Counties. * WHEN...UNTIL 2 PM MDT FRIDAY. * IMPACTS...Air Quality is acceptable; however for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

с: 29.07.2026, 11:44
к: 31.07.2026, 13:00

* WHAT...Air Quality Advisory because of degraded air quality. Air Quality Index is forecast to be Very Unhealthy. * WHERE...Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette, Valley, and Washington Counties. * WHEN...UNTIL 2 PM MDT FRIDAY. * IMPACTS...Members of sensitive groups may experience health effects. The general public is not likely to be affected.

с: 30.07.2026, 13:16
к: 31.07.2026, 13:00

* WHAT...Air Quality Advisory because of degraded air quality. Air Quality Index is forecast to be Very Unhealthy. * WHERE...Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette, Valley, and Washington Counties. * WHEN...UNTIL 2 PM MDT FRIDAY. * IMPACTS...Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.