---
title: "Ammonia leak spreads gas cloud"
description: "CBRNe World provides those tasked with defending against CBRN and IED threats with the essential practical, scientific and political information. Access the current and previous issues of the magazine by registering as a member."
url: "https://cbrneworld.com/threats-news/americas/ammonia-leak-spreads-gas-cloud"
date: "2026-07-30T21:12:05+00:00"
language: "en-GB"
---

#  Ammonia leak spreads gas cloud

 Written on 01 December 2025.

A chemical disaster unfolded in Weatherford, Oklahoma when a tanker truck carrying 25,000 pounds of anhydrous ammonia began leaking behind a Holiday Inn Express. Dozens suffered severe health injuries, and the leak led to the evacuation of over 500 area residents as authorities scrambled to contain and investigate the deadly vapor cloud. Mechanical failure in a gasket or valve is believed to have leaked the ammonia in large quantities, forming the toxic cloud that blanketed both the Holiday Inn and adjacent residential blocks.

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