Avista Corporation (NYSE: AVA) filed a Current Report on Form 8-K on August 3, 2026, disclosing that multiple fires broke out on August 1, 2026, in the Spokane, Washington area within the company's electric and Natural Gas service territory, causing widespread outages and significant damage to its transmission and distribution infrastructure.

Key Highlights

  • Multiple fires ignited: Fires started on August 1, 2026, in the Spokane, Washington area, inside Avista's service territory.
  • Rapid fire spread: Dry and windy conditions caused fires to spread quickly, resulting in customer outages and evacuations.
  • Avista facilities not implicated: According to the filing, the company's facilities were not involved in starting any of the fires in the Spokane area.
  • Over 8,000 acres affected: As of the evening of August 2, 2026, the three major fires had affected over 8,000 acres, per the filing.
  • More than 600 structures destroyed: The filing reported that over 600 structures had been destroyed as of August 2, 2026.
  • No fires contained: As of the time of the filing, none of the three major fires were reported as contained.
  • Grid infrastructure damaged: The fires caused extensive damage to the company's transmission and distribution facilities serving West Spokane.

Avista's Spokane Service Territory Hit by Three Major Wildfires

Avista Corporation, a Spokane-based regulated electric and natural gas Utility incorporated in Washington state and listed on the New York Stock Exchange under the ticker AVA, disclosed via an Item 8.01 Current Report that multiple fires erupted on August 1, 2026, within its service territory. The company noted that dry and windy conditions accelerated fire spread, leading to customer outages and community evacuations across the affected zone. The filing specified that Avista's own facilities played no role in igniting any of the fires in the Spokane area, a point the company stated directly in the disclosure.

According to the filing, and drawing in part on reports from government agencies and external news sources, the three major fires active in the Spokane area had collectively affected over 8,000 acres and destroyed more than 600 structures by the evening of August 2, 2026. The filing noted that at that point in time, none of the three fires had been brought under containment. The fires also caused what the company described as "extensive damage" to Avista's transmission and distribution facilities that serve West Spokane, a portion of the company's core regulated utility footprint.

Avista management stated in the filing that the company remains focused on serving customers and supporting recovery efforts in the communities affected by the fires. Additional operational details and information about the fires' impact on company operations are contained in a press release dated August 2, 2026, filed as Exhibit 99.1 to the Current Report and incorporated by reference. The report was signed by Gregory C. Hesler, Senior Vice President, General Counsel, Corporate Secretary and Chief Ethics/Compliance Officer, on August 3, 2026. The company noted any forward-looking statements are subject to its cautionary language.

What Was Disclosed

Avista Corporation disclosed in an August 3, 2026 Current Report that three major wildfires in its Spokane service territory had burned over 8,000 acres, destroyed more than 600 structures, and caused extensive damage to its West Spokane transmission and distribution facilities, with all fires uncontained as of August 2, 2026.