The Threat List

Status:Disaster

Global coastal regionsDisasterNews-derivedmedium confidenceSourcing reviewed 2026-09-12

Tsunami Risk

Tsunamis are infrequent but potentially catastrophic coastal disasters that can cause mass mortality, widespread displacement, infrastructure destruction, environmental damage, and major economic losses.

Severity score

59.5

Severe · default weighting

Trajectory

Steady

How this is ranked

What this is

Score breakdown

Each factor is a 0–100 relative severity index, not the raw figure or a specific time period. The actual counts and periods are listed under "Standardized Impact" on the right.

Loss of life

66

Direct and attributable mortality, normalised across annual and cumulative tolls.

Lives negatively impacted

55

People displaced, injured, food-insecure, exposed or otherwise materially harmed.

Financial cost

69

Direct damage, lost output and health-system spend attributable to the event.

Environmental impact

52

Emissions, habitat and biodiversity loss, contamination and irreversibility.

Trajectory

43

Whether the situation is escalating, and how much worse it is plausibly getting.

Audit trail

Everything this entry has been through — when it was first searched for, queued, reviewed and approved, and how its figures and rank have moved since.

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