Elevated to critical fire weather conditions are bearing down on the Pacific Northwest this Memorial Day weekend, with the National Weather Service warning that gusty winds and critically low humidity are expected to persist through at least Tuesday across Oregon and portions of Nevada.

The Seattle/Tacoma NWS forecast office flagged the dangerous combination of drying winds and parched fuels as particularly concerning heading into one of the busiest outdoor recreation weekends of the year. East of the Cascades — where fire danger is most acute — minimum relative humidities are forecast to drop into the single digits to 30 percent range, with afternoon and evening wind gusts capable of rapidly spreading any fire starts.

Dry Fuels After Low Snowpack Season

The fire weather threat is amplified by an unusually dry spring following a winter with record low snowpack across much of Washington and parts of Oregon and Idaho. The early snowmelt has left grass and shrub fuels well ahead of their normal curing schedule, meaning fine fuels that typically carry fire are significantly drier than average for late May.

National Interagency Fire Center predictive services have flagged the Pacific Northwest, Northern Rockies, and Great Basin as regions facing above-normal significant fire potential for the upcoming summer months — a forecast that is now materializing ahead of schedule.

Thunderstorm Risk Adds Lightning Ignition Concern

The NIFC national weather assessment also notes that isolated mixed wet-dry thunderstorms are possible across portions of the Northern Rockies and parts of the Northwest. Dry lightning — storms that produce lightning with little or no precipitation reaching the ground — represents one of the most dangerous fire weather scenarios for fire managers, as it can trigger multiple simultaneous ignitions across remote terrain before resources can respond.

What Recreationists Should Know

For those heading into the backcountry or onto public lands this weekend, fire officials offer the following guidance:

  • Check current fire restrictions before you go — Stage 1 restrictions are already in effect across Central Oregon and on BLM lands throughout Oregon and Washington as of mid-May.
  • Campfires are prohibited on many public lands under current restrictions, including in the Deschutes National Forest, Ochoco National Forest, and Crooked River National Grassland.
  • If campfires are permitted where you are recreating, ensure they are completely extinguished and cold to the touch before leaving.
  • Avoid parking vehicles on dry grass — catalytic converters and hot exhaust systems can ignite vegetation.
  • Be aware that even charcoal and propane fires are prohibited under Stage 1 restrictions in affected areas.

Fire weather watches and red flag warnings can change rapidly. Visitors to Oregon, Washington, and Idaho public lands are encouraged to monitor the National Weather Service fire weather forecast at weather.gov/fire and local emergency management channels for updated conditions throughout the weekend.