The bill directs the NOAA Administrator to establish and maintain a publicly accessible database and webpage cataloging each "billion‑dollar disaster" in the United States. The dataset must list estimated cost, event type, location, dates, and other Administrator‑determined details, and provide visual graphs and maps like the National Centers for Environmental Information (NCEI) tool that covered 1980–2024.
The statute sets a minimum update cadence (at least twice a year), requires NOAA to use data available to the agency and to collaborate with federal and non‑federal partners, and mandates that the previously existing NCEI database remain archived and accessible. The law also defines "billion‑dollar disaster" narrowly as a storm or severe‑weather event with $1 billion or more in combined direct and market costs as determined by NCEI, while giving NOAA discretion to include other events when appropriate.
For analysts, insurers, emergency managers, and policymakers, the bill restores a standardized public source of loss statistics and visualization tools that feed planning, budgeting, and risk modeling.
At a Glance
What It Does
The bill requires NOAA to create a public, searchable database and webpage documenting each U.S. billion‑dollar disaster, with fields for estimated cost, type, location, dates, and other details the Administrator chooses. It also mandates visual graphs and mapping features comparable to the NCEI "billions" tool and requires NOAA to keep that historical NCEI archive accessible.
Who It Affects
NOAA/NCEI will carry operational responsibility; federal and non‑federal data partners may be asked to coordinate. Primary users include climate researchers, emergency managers, insurers and reinsurers, state and local planners, and congressional budget and appropriations staff.
Why It Matters
By reestablishing a standardized public record of catastrophic weather losses and interactive visualizations, the bill supplies a common dataset for risk assessment, funding decisions, and accountability. It restores continuity with a tool that was active through 2024 and centralizes the official NCEI cost determinations that many sectors rely on.
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What This Bill Actually Does
The core obligation is straightforward: NOAA must host a public database and webpage that lists each "billion‑dollar disaster" occurring in the United States. The statute specifies basic fields—estimated cost, event type, location, and dates—and lets the Administrator attach additional information they consider useful.
The bill emphasizes public access, archiving, and visual presentation, not only raw tables.
The law requires NOAA to refresh the dataset at least twice a year as new information becomes available. It also directs NOAA to reproduce visual graphs and mapping features similar to those produced by NCEI for 1980–2024, explicitly tying the new resource to the prior NCEI interface that had been publicly available until May 9, 2025.
Practically, that means NOAA will need to preserve the earlier archive for research and replicate or update its interactive visualizations on the new page.For data provenance, the bill instructs the Administrator to use data already available to NOAA and permits collaboration with federal and non‑federal partners, including the same partners used while the prior database was active. That gives NOAA both authority and flexibility to lean on established NCEI methods and outside contributors for estimates and mapping.
The Administrator also has discretion to include non‑billion‑dollar disasters when doing so would be appropriate, which allows contextual entries or notable events that fall short of the $1 billion threshold.Finally, the statute defines "billion‑dollar disaster" narrowly: a storm or severe‑weather event causing $1,000,000,000 or more in combined direct and market costs, with the National Centers for Environmental Information responsible for that determination. The combination of a statutory definition, mandated visual products, archival requirements, and interagency collaboration makes the measure a focused effort to restore a public, authoritative loss dataset for weather‑related disasters.
The Five Things You Need to Know
NOAA must establish and maintain a public database and webpage that documents each U.S. "billion‑dollar disaster.", The Administrator must update the database and webpage at least biannually as new information becomes available.
Required data fields include estimated cost, event type, location, and date(s), plus any other details the Administrator deems appropriate.
The bill requires visual graphs and mapping features similar to the NCEI "billions" tool covering 1980–2024 and directs NOAA to preserve the prior NCEI archive for research.
The statute defines "billion‑dollar disaster" as a storm or severe‑weather event with $1 billion or more in combined direct and market costs as determined by NCEI, while permitting NOAA to include other events at its discretion.
Section-by-Section Breakdown
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Short title
This section provides the Act's name: "Measuring the Cost of Disasters Act of 2025." It is purely titular and has no operative effect beyond labeling the statute for citation.
Establish and publish database and webpage
Subsection (a) directs the NOAA Administrator to establish and maintain a public database and accompanying webpage that contains information on each billion‑dollar disaster in the United States. From an implementation standpoint, NOAA will need to create a searchable user interface, decide on data formats, and set archival standards for long‑term accessibility.
Update cadence and required contents
Subsection (b) mandates that NOAA update the database not less frequently than biannually. Subsection (c) lists mandatory data elements—estimated cost, type, location, and date(s)—and allows the Administrator to include additional material. It also requires interactive visualizations and mapping features comparable to the prior NCEI tool, meaning NOAA must either recreate or reuse those visualization assets and ensure the new interface supports the same analytic views.
Data sources, collaboration, and discretionary inclusions
NOAA must use data available to the agency and may collaborate with federal and non‑federal partners, including those involved with the earlier NCEI dataset. The statute gives NOAA discretion to include disasters that do not meet the $1 billion threshold if inclusion is appropriate, which permits contextual events or notable outliers to appear in the public record without changing the statutory definition.
Archive maintenance and statutory definition
Subsection (f) requires NOAA to maintain the previously existing NCEI disaster database on the NCEI webpage for archiving and research, preserving continuity with historical records. Subsection (g) defines "billion‑dollar disaster" as a storm or severe‑weather event that NCEI determines produced $1,000,000,000 or more in combined direct and market costs; that places NCEI at the center of the methodology and threshold determinations.
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Explore Environment in Codify Search →Who Benefits and Who Bears the Cost
Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- Climate and disaster researchers — Gain a standardized, archived dataset and interactive visualizations that support longitudinal analysis and replication of loss estimates.
- State and local emergency managers/planners — Can use location‑specific cost and mapping data to prioritize mitigation investments and apply for federal assistance with clearer historical precedents.
- Congressional and federal budget offices — Receive a single authoritative source of weather‑loss estimates to inform appropriations, disaster relief decisions, and fiscal exposure assessments.
- Insurers, reinsurers, and risk modelers — Obtain public loss footprints and event metadata that support exposure analysis, model validation, and premium setting.
- Advocacy groups and the public — Benefit from increased transparency around the financial scale and geographic distribution of costly weather disasters.
Who Bears the Cost
- NOAA/NCEI — Bears the primary operational burden to design, host, update, and archive the database and visualizations; costs include staff time, IT hosting, and continued maintenance.
- Federal and non‑federal data partners — May need to allocate staff time and share datasets or technical expertise to support NOAA's updates and validation processes.
- Taxpayers/federal budget — If Congress does not appropriate additional funds, NOAA may need to reallocate existing budgets to meet the mandate, creating opportunity costs for other agency priorities.
- State and local agencies — Could face informal expectations to respond to data inquiries or provide supplementary information for local events, adding administrative burden.
Key Issues
The Core Tension
The bill seeks to maximize public transparency and standardized loss accounting while relying on administrative discretion and existing agency resources; the central dilemma is balancing the technical rigor and methodological consistency required for credible, comparable loss estimates against the administrative cost, speed of updates, and the political pressures that accompany any official determination of disaster costs.
The bill centralizes NCEI determinations for what counts as a "billion‑dollar disaster," but it does not prescribe the detailed methodology NCEI must use—such as inflation adjustment protocols, treatment of insured versus uninsured losses, or how market costs are calculated. That leaves methodological choices to an administrative process that may vary over time and invites questions about comparability across years unless NOAA adopts and documents explicit standards.
Scope and timing are additional tension points. The statutory definition restricts "billion‑dollar disaster" to storms and severe‑weather events, potentially excluding other high‑loss hazard types (for example, earthquakes, human‑caused disasters, or pandemics) unless NOAA chooses to include them under its discretionary authority.
The biannual update schedule balances thoroughness against agility, but it may not satisfy users who need near‑real‑time loss estimates for emergency response or insurance claims modeling. Finally, the statute mandates preservation of the prior NCEI archive but does not appropriate funds; NOAA will need to allocate technical resources to host both archival and new interfaces, and stakeholders should expect implementation to depend on available budget and staffing.
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