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Champlain Towers South Collapse

The site of the Champlain Towers South partial collapse in Surfside, Florida
The site of the Champlain Towers South partial collapse in Surfside, Florida.
Credit: NIST

On June 24, 2021, Champlain Towers South, a 12-floor condominium in Surfside, Florida, partially collapsed at approximately 1:30 a.m. EDT. The collapse happened suddenly and has resulted in mass casualties.

On June 25, NIST began deploying a team of six scientists and engineers to collect firsthand information on the collapse. Since then, NIST experts have been working with federal, state and local authorities to identify and preserve materials and information that might be helpful in understanding why the collapse occurred.

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NIST encourages members of the public to submit any information, including video, photos or other documentation, that might help the investigation via the NIST Disaster Data Portal

Recent News

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Media

NCST Champlain Tower South Collapse Investigation | Technical Update  (June 2025)
NCST Champlain Tower South Collapse Investigation | Technical Update (June 2025)
This update provides a summary of the NCST Champlain Towers South investigation’s history and progress, shares preliminary findings, and highlights potential impacts this complex investigation could have on building codes and standards. Investigative lead Judith Mitrani-Reiser and co-lead Glenn Bell explain how the team determined that some of the failure hypotheses are more likely than others. Mitrani-Reiser and Bell describe the extensive planning and coordination that helped the team systematically conduct thorough analyses, testing and modeling to reach their investigation's preliminary findings.

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Contacts

Created June 30, 2021, Updated June 23, 2025
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