BOISE, Idaho — The geographic center of U.S. wildfire risk is making a dramatic seasonal shift. After a brutal summer and early fall in the Pacific Northwest, fire weather conditions have largely calmed across the region following a significant storm system that moved through October 21-23. Now, according to the National Interagency Fire Center's latest outlook, attention is turning to the Mid-South — where drought, leaf drop, and El Nino-influenced warmth are combining to create dangerous fire conditions.

Pacific Northwest Now Below Normal

The October 21-23 storm system, fed in part by moisture from the remnants of Hurricane Trudy, brought widespread rain across Oregon, Washington, and Idaho and deposited up to a foot of snow in the higher elevations of the Sierra Nevada. That precipitation ended the dry streak that had kept parts of the Great Basin at elevated fire potential through mid-October, and pushed the Pacific Northwest's fire risk classification from elevated down to below normal.

No widespread red flag setups are expected in the Pacific Northwest through early November. Climate Prediction Center outlooks favor below-normal temperatures across Washington, Oregon, and Montana through the October 28 to November 1 timeframe. A follow-on storm system from November 4-7 is expected to bring additional precipitation to the region, further cementing the transition to the wet season.

Mid-South Now the Focal Point

NIFC's November fire potential outlook places above-normal significant fire risk across six states: eastern Oklahoma, northeast Texas, Arkansas, north Mississippi, and parts of western and middle Tennessee and Kentucky. These states are particularly vulnerable during strong El Nino years, which tend to produce warmer and drier fall and winter conditions across the central and southern United States.

Several factors are converging to elevate that risk:

  • Worsening drought: The October 22 Drought Monitor showed deteriorating conditions in the Lower Mississippi basin, with drought expanding and intensifying across portions of the mid-South.
  • Leaf drop: Autumn leaf fall is adding significant quantities of dry, fine fuel to the forest floor — the type of fast-burning surface fuel that powers rapid fire spread in eastern woodland fires.
  • Above-normal temperatures: CPC's 8-14 day outlook favors above-normal temperatures for most of the country, keeping fuels drying as the region's typical rainy season is delayed.

A Reminder About Late-Season Risk

The shift in risk to the Mid-South serves as a reminder that the national wildfire season does not end simply because autumn has arrived in the West. Eastern woodland fires — often fueled by cured grass, leaf litter, and low humidity under gusty northwest winds — can spread quickly and threaten structures, particularly in the expanding wildland-urban interface across Appalachian and Ozark communities.

For Pacific Northwest residents, the outlook through early November is encouraging: below-normal temperatures, incoming precipitation, and no large-scale fire weather setups on the horizon. That said, meteorologists note that isolated red flag conditions can develop quickly in the region's interior valleys and mountain gaps, as demonstrated by a Red Flag Warning posted by NWS Billings for Sheridan County, Montana, on October 23 — driven by southwest winds gusting to 45 mph on dry, unseasonably warm air ahead of a cold frontal passage.

Fire managers in the Northwest advise residents not to let guard down entirely heading into November. Defensible space maintenance, escape planning, and awareness of local fire weather forecasts remain important year-round.