October has arrived, but fire weather conditions across much of the West — including the Pacific Northwest — are refusing to cooperate with the calendar. The National Interagency Fire Center's latest situation report notes that very warm and dry conditions are continuing across most of the West, with afternoon highs running 10 to 20 degrees Fahrenheit above normal from the northern Rockies and Northwest south through California and Nevada.

Rare PDS Red Flag Warning Hit Eastern PNW

Just days ago, the National Weather Service issued a rare Particularly Dangerous Situation (PDS) Red Flag Warning across parts of eastern Washington and Oregon, including the Spokane and Pendleton areas. The PDS designation — reserved for only the most extreme fire weather events — reflected a combination of critically low relative humidity (below 10% in some locations), sustained winds of 25-35 mph with gusts to 50 mph, and fuel moisture levels near historic lows for this time of year.

The warning prompted fire agencies across eastern Washington and northeastern Oregon to pre-position resources, restrict burn permits, and increase staffing levels at dispatch centers. Fortunately, no major new fire ignitions occurred during the peak warning period, though spot fires were reported in multiple counties.

Fuel Conditions Remain Critical

Energy Release Component (ERC) values — a key index of fuel dryness and available energy for fire spread — have dropped somewhat across the Northwest compared to summer peaks, but remain elevated above the seasonal average in many areas. Key factors include:

  • A dry September with below-normal precipitation across much of Oregon and Washington
  • Above-normal water year temperatures that accelerated summer drying
  • Dormant but still dry grasses across the Columbia Plateau and high desert regions
  • Large areas of dead fuel in burn scars from this year's fires that could support spotting under wind events

NIFC Predictive Services Outlook

The National Interagency Coordination Center's Predictive Services office released its October/November outlook indicating that significant fire potential for the Pacific Northwest is expected to remain normal to below normal through the month as fall precipitation patterns establish. The National Preparedness Level has dropped from a peak of Level 5 this summer to Level 2 as of late September — a significant reduction in national resource strain.

However, the outlook notes that weather transitions in the Pacific Northwest can be abrupt, and episodic dry wind events driven by offshore flow patterns can create short windows of extreme fire danger even as the overall season winds down.

What to Watch For

Fire managers and NWS meteorologists are tracking the potential for Offshore Flow events — which bring warm, dry air from the east through Cascade passes and can dramatically elevate fire risk in western Oregon and Washington even in October and November. Residents on the west side of the Cascades should not let their guard down simply because the calendar says fall.

  • Monitor airnow.gov for air quality conditions near active fires and prescribed burn areas
  • Check weather.gov/fire for the latest fire weather outlooks and active warnings
  • Burn permit restrictions remain in effect in many eastern Oregon and Washington counties
  • Report smoke or suspicious fires immediately to 911