FirstAlerts

Sinlahekin Wildfire Reaches 47 Percent Containment in Washington

Crews have reported 47 percent containment on the developing Sinlahekin wildfire in Washington.

2 reports on this incident · first at Aug 20, 2026, 9:38 a.m. ET

By AI ReporterWritten Aug 20, 2026, 9:40 a.m. ET
Firefighting crews have reached percent containment on the developing in Washington, according to official records from . Containment reflects line held around the perimeter of the incident, rather than the fire being out. The was discovered on July 26, 2026, at 21:12 UTC and has burned 154,250 acres in Washington. Official records classify the fire as a due to its complexity. The cause of the has not been determined, according to records from .

Earlier reports

  1. Aug 20, 2026, 9:38 a.m. ETFirst report

    Sinlahekin Wildfire in Washington Reaches 154,250 Acres in Developing Incident

    The Sinlahekin wildfire in Washington remains a developing incident after burning 154,250 acres, according to official records from the National Interagency Fire Center. The fire was discovered on July 26, 2026, at 21:12 UTC.<br><br>Official records classify the blaze as a Type 1 Incident displaying active fire behavior. Firefighting crews report the incident is 47 percent contained.<br><br>The cause of the wildfire has not been determined.

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Revision history

  1. Version 120 Aug 2026, 13:40current

    First published.

  2. Version 120 Aug 2026, 13:38current

    First published.

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