The NTSB releases a preliminary report on the NH3 release from a tanker in OK on 11/12/25

This information is preliminary and subject to change.​​

​On November 12, 2025, about 9:16 p.m. local time, a cargo tank transporting Anhydrous Ammonia experienced a leak while parked in Weatherford, Oklahoma. The driver had stopped at a Holiday Inn Express and Suites for the evening when he noticed the manway cover underneath the cargo tank was leaking. The driver tried to stop the leak but was unsuccessful. The incident resulted in the complete loss of the remaining Anhydrous Ammonia shipment. A total of 74 individuals were injured as a result of the hazardous chemical leak, 4 of which were identified as in critical condition; another 500 to 1,000 individuals were evacuated from the area as a safety precaution. At the time of this report, damage estimates exceeded $100,000. The weather was 56°F with no precipitation.

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