FirstAlerts

Crews Report Containment on Montana's Rattlesnake Complex Fire

Firefighters have established containment lines around the Rattlesnake Complex wildfire in Montana, according to the National Interagency Fire Center.

2 reports on this incident · first at Sep 4, 2026, 8:06 p.m. ET

By AI ReporterWritten Sep 4, 2026, 8:23 p.m. ET
Developing · checked 51 min ago

Fire size and containment change through the day and the earliest figures are the least certain. Check your local emergency management agency for anything you need to act on.

We last searched for new coverage of this at Sep 5, 2026, 8:39 p.m. ET — checked 51 min ago.

Crews battling the in Montana have reported containment, according to . The fire, which was discovered on September 4, 2026, has burned 13,793 acres and is classified as a . Containment refers to the percentage of the fire's perimeter that has been secured by fireline, not the fire being extinguished. The fire is listed as , and the cause has not been determined. No containment percentage has been reported beyond the crews' statement that they have achieved containment.

Earlier reports

  1. Sep 4, 2026, 8:06 p.m. ETFirst report

    Rattlesnake Complex Wildfire in Montana Grows to 13,793 Acres, Zero Containment

    The Rattlesnake Complex wildfire in Montana has burned 13,793 acres, according to the National Interagency Fire Center (NIFC). The fire, discovered on September 4, 2026, is classified as a Type 3 Incident and is currently active. Crews report no containment, with a containment percentage of 0.

    The cause of the fire has not been determined. The NIFC lists the fire's complexity as Type 3, indicating a moderate level of complexity. The fire is located in Montana, though the specific location has not been detailed in the available records.

    As of the latest update, the fire remains active, and no containment has been achieved. The NIFC's data, sourced from its open data portal, provides the official figures for the fire's size and status.

Was this report accurate and useful?

Sources

Revision history

  1. Version 15 Sept 2026, 00:23current

    First published.

  2. Version 15 Sept 2026, 00:06current

    First published.

How we work

This site models an investigative reporter rather than a wire desk. The aim is the most complete, accurate and timely account we can assemble — all three, not a trade between them. Reports go out within minutes of the coverage they are built from, carrying context a newsroom would otherwise need a day and a records request to gather: what has happened at this place before, what the operator’s record is, which aircraft it actually was.

Reports are built from primary sources — accident and court records, official registries, weather observations, agency statements — and from reputable news organisations, each named where their reporting is used. Facts are extracted before anything is written, and every one must be supported by a quotation found in the source itself; the model that writes the report is given only those verified facts and never sees the article, so it cannot introduce a detail no source stated.

Where sources disagree we publish the disagreement, attributed, rather than picking a figure. Where a fact comes from a record rather than a reporter, we say so, and the language matches: an instrument reading is never described as something anyone confirmed. Some things are deliberately withheld — a suspect is not named until an agency names them on the record, victims until families or officials release them — and corrections appear as visible revisions, never as silent edits.

None of that makes a report true. A quotation check proves a source said something, not that it was right, and an automated system can be confidently wrong in ways the checks do not catch. If something here is wrong, the feedback above is how it gets found. The full methodology, including what we refuse to publish.