Fire weather remains a serious concern across eastern Oregon and Idaho as a pattern of dry thunderstorms, gusty outflow winds, and ongoing drought continues to keep fire danger elevated this weekend. Forecasters and fire managers are watching the situation closely as the region heads into the final stretch of the 2026 fire season.

Recent Red Flag and Fire Weather Watch Activity

The National Weather Service issued a Severe Red Flag Warning effective September 17 for several Oregon fire weather zones, including:

  • Zone 670: Burns BLM
  • Zone 671: Steens Mountain
  • Zone 674: Northwestern Vale BLM
  • Zone 675: Baker Valley

Concurrently, a Fire Weather Watch was issued by NWS Boise for Idaho on September 16-17, citing the threat of lightning, which was in effect for the Northern Boise National Forest and Southern Boise/Western Sawtooth National Forest areas, including the Camas Prairie.

On September 18, a Severe Fire Weather Watch went up for portions of Idaho as a strong low pressure system in northeastern California moved to bring scattered thunderstorms with outflow wind gusts up to 50 mph and critically little rainfall — the worst combination for fire starts.

Thunderstorms Near La Grande and Madras

Thunderstorm activity near La Grande and Madras raised fire spread risk across much of eastern Oregon, particularly east of the Cascades. The pattern of dry lightning strikes is a primary driver of new fire starts across the region, and initial attack crews have been busy responding to multiple new ignitions over the past week.

The Bigger Picture

Underlying all of the short-term weather events is a drought-hardened landscape: roughly 57 percent of the Lower 48 states remains in drought, with areas of Extreme to Exceptional drought concentrated across the Great Basin and portions of the Interior West. These desiccated fuels mean that even a modest fire weather event can produce explosive fire behavior.

The Climate Prediction Center’s 6-10 and 8-14 day outlooks lean warmer across the interior West for the back half of September, suggesting a brief midweek lull is unlikely to close out the season. The NIFC continues to rate the Pacific Northwest at above-normal fire potential for the month.

What to Watch

Fire weather forecasters are tracking:

  • Any return of offshore east winds over the Cascades, which can rapidly lower humidity and accelerate fire spread on the western slopes
  • Additional dry thunderstorm events as troughs track through the region
  • Critical humidity recovery — or lack thereof — overnight

Residents east of the Cascades and throughout the high desert should remain on alert for rapid fire starts. Any smoke sightings should be reported immediately to Oregon 911 or Idaho 911, or by calling 1-800-452-7888 (Oregon Division of Forestry).