USA – CSB Calls on Chemical Companies to Prepare Now to Prevent Serious Incidents During Hurricane Season

June 3, 2026

With the Atlantic Hurricane season officially underway, the U.S. Chemical Safety and Hazard Investigation Board (CSB) is urging chemical facilities to prepare now to prevent major chemical releases that could result from high winds and other extreme weather events during the season. The season began on June 1, and ends November 30.

Although the National Oceanic Atmospheric Administration (NOAA) has predicted a below- normal hurricane this season, the threat posed by severe storms still exists. Adequate preparations by chemical facilities is critical to ensure the safety of workers, emergency responders, and surrounding communities.

“Although the prediction is for a below-normal hurricane season, it only takes one bad storm hitting one unprepared facility to lead to a catastrophic chemical incident,” said CSB Chairperson Steve Owens.

The CSB has investigated serious chemical incidents caused by ineffective planning prior to hurricanes and other extreme weather events. The findings from two past incidents in particular highlight significant vulnerabilities at facilities during a hurricane:

In August 2017, Hurricane Harvey severely damaged Arkema’s chemical facility in Crosby, Texas, leading to the decomposition of organic peroxides and a major fire after backup power failed and refrigeration systems flooded. Massive fumes and smoke were released during the incident. All of Arkema’s employees were evacuated from the facility, as were more than 200 residents living nearby who could not return home for a week. Twenty-one people sought medical attention from reported exposures to the fumes and smoke.
In August 2020, Hurricane Laura severely damaged the Bio-Lab Lake Charles facility in Westlake, Louisiana. On the day of the incident, over 1 million pounds of trichloroisocyanuric acid (TCCA), a highly reactive chemical, were on-site at the facility. The Category 4 hurricane’s strong winds damaged buildings at the facility, including tearing off roofs. Rainwater from the storm contacted the TCCA stored inside the buildings, initiating a chemical reaction, that — compounded by failed generators and fire suppression systems — initiated a fire and released a large plume of hazardous gases, including toxic chlorine, from the facility. A portion of nearby Interstate 10 was closed for over 28 hours, and local officials issued a shelter-in-place order for the surrounding community. Bio-Lab subsequently spent $250 million rebuilding the facility.

Key materials prepared by the CSB that address hurricane preparation include:

In addition to these resources, the Center for Chemical for Chemical Process Safety (CCPS) has also published a document titled CCPS Monograph: Assessment of and Planning for Natural Hazards. This document provides a practical planning and readiness tool for companies to follow to prepare for severe weather such as hurricanes.

The CSB urges facilities to review these resources and implement applicable recommendations and key lessons to prevent recurrence or limit the impact of chemical releases caused by hurricanes. Top priorities for limiting the impact of severe weather continue to be:

Securing Hazardous Materials,
Ensuring Backup Power for Critical Safety Systems,
Training Personnel on Emergency Protocols, and
Coordinating with Local Emergency Management Authorities

“Preparation is key to minimizing the effects of extreme weather on chemical facilities. Facilities must not let their guard down against these hazards, or the consequences may be dire,” said CSB Board Member Sylvia Johnson.

CSB USA