Fire weather forecasters are tracking a dangerous combination of threats across the Pacific Northwest on August 14 — a red flag warning issued for abundant lightning across central and eastern Oregon, concurrent with red flag conditions tied to low humidity and gusty winds in eastern Washington. The convergence of these threats raises the risk of new fire ignitions while existing fires continue to grow.

Oregon: Lightning Red Flag Warning

The National Weather Service issued a red flag warning for much of central and eastern Oregon, citing the potential for abundant lightning during the afternoon of August 13 continuing into August 14. Thunderstorm cells capable of producing lightning with little to no wetting rain — a pattern known as "dry lightning" — are the primary concern. Fire managers often refer to these events as the most dangerous lightning scenarios, as strikes can smolder undetected in dry fuels for days before blowing up into large fires under the right wind conditions.

Oregon's fire agencies are positioning additional resources and increasing patrol efforts in areas expected to receive the most lightning activity, particularly in the Ochoco, Malheur, and Wallowa-Whitman National Forests.

Washington: Low Humidity and Gusty Winds

Eastern Washington is under red flag warning conditions driven by a different but equally concerning set of factors: low relative humidity (15–25%) and gusty winds up to 30–40 mph east of the Cascades. These conditions dramatically increase the rate of fire spread for any active fires and can cause established containment lines to fail.

The Lake Chelan area and Okanogan Highlands have seen the most significant wind impacts, which have contributed to the rapid growth of both the Little Giant and Sinlahekin fires.

Broader Weather Pattern

NIFC fire weather forecasters note that relative humidity across the Northwest is running at 15–35% for most areas, with temperatures near normal. While this represents a slight moderation from the extreme heat of earlier in the season, fuels remain critically dry after months of drought. Even modest wind events are enough to drive aggressive fire behavior.

  • Relative humidity: 15–35% across most of the Northwest
  • Wind gusts: 30–40 mph possible in eastern Washington and parts of Oregon
  • Lightning threat: Dry lightning possible across central and eastern Oregon August 13–14
  • Fuel moisture: Critically low across the region after persistent drought

Public Safety Reminders

Fire agencies across the region are urging the public to:

  • Check and follow all fire restrictions before heading outdoors
  • Avoid all outdoor burning, even in areas where it may be technically permitted
  • Never leave a campfire unattended; drown it until cold
  • Report new smoke columns immediately by calling 911 or your local dispatch
  • Avoid parking vehicles in dry grass, which can ignite from catalytic converters

Fire managers are asking anyone who spots a new fire to call 911 immediately — early reporting and rapid initial attack are critical to keeping new starts small in this volatile fire environment.