USFS: Easterly flow of winds expected to increase fire danger across Pacific Northwest

PORTLAND, Ore., Sept. 5, 2024 — A weather pattern bringing an easterly flow of winds is forecast over much of the Pacific Northwest Region through this weekend.

With warming temperatures and decreasing humidity, conditions are primed for growth on existing fires and the potential for new starts.

East wind events are common this time of year. They often start in late August, continue into September, and may last into October. These winds flow eastward across the Cascade Mountains bringing dry, arid air accelerating fire danger.

The severity and duration of east winds varies widely. While these seasonal east winds are not forecast to be as intense as the wind event experienced over Labor Day in September 2020, they may produce some gusts.

With this easterly flow, fire managers expect to see an increase in fire danger. This means new wildfires may be challenging to contain until weather moderates again. Existing fires that have shown little growth and smoke over the last week may become more active. Shifting winds (west to east) may lead to existing fires expanding in different directions, exposing previously unburned forest fuels.

Many national forests are at high or extreme fire danger with campfire bans in place. Please check fire restrictions at your local ranger district before heading out. Even where campfires are allowed, please consider if having a fire is necessary.

Here are few tips to keep yourself, your families, and communities safe during these dangerous conditions:

  • Stay vigilant if wildfires are burning in your area or near your community.
  • Know that conditions may change quickly.
  • Adhere to local fire restrictions.
  • Sign up for emergency alerts with your local county.
  • Become familiar with the three evacuation levels. Also available on your state emergency management agency’s website: Oregon | Washington
  • Know where to find up-to-date evacuation information for your area.
  • Make a plan to keep your family safe.

 

Smoke impacts may increase across Oregon and Washington, including in population centers and areas west of the Cascades that have not had significant smoke impacts yet this summer.

For more information on smoke and how to stay safe visit:

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