NHIRA — National Historical Incident Research & Analysis

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Date Range

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Filters

Min. Fatalities

Map Layers

Historical Incidents Heat Map (Risk Level) pending validation

NHIRA's forecast layers are shown only after passing independent, out-of-sample statistical validation. Nothing here predicts a specific future event, person, or exact location — see the Forecast panel for the full research record, including negative results.

From To

1900 recorded

Live Statistics (All Time)

—Total Incidents

—Total Fatalities

—Total Injuries

—Countries

—Categories

—Source Citations

Incidents by Decade

Fatalities by Decade

Top Categories

Research & Statistics

Numbers are computed live from your current data — they update automatically as incidents are added.

From To Country Category Region Min fatalities

Today in History

Explore the Record

Rankings computed over the whole dataset across fixed units — decades, countries, U.S. states, and the most common incident categories. Each ranking shows the size of the comparison it is drawn from. These describe what NHIRA has recorded, which reflects both real events and how completely each period and place has been documented.

Rankings never define their own regions or time windows — only fixed, pre-set units are compared, and per-capita rates are omitted because NHIRA has no population denominators.

Record Coverage Over Time

How many records NHIRA holds for each decade. Read this before any ranking or comparison elsewhere on the site: record counts reflect both what happened and how completely each period was documented and collected. A decade with more records is not necessarily a decade with more incidents.

Dataset Coverage

This describes the whole NHIRA dataset, not just the filtered results above — it's a snapshot of what NHIRA currently contains and how well-sourced it is.

Source coverage

Coverage by country

Per-country breakdown — the raw record count alone hides which countries are thinly covered or rely on a single source for every record. "2+ sources" is a stricter bar than "verified": a record can be verified against one strong, authoritative source and still not have been independently cross-checked against a second one.

Forecasting

A quick read on the currently filtered country's risk model — filter to a single country above to populate this. Open the 🔮 Forecast panel for the full breakdown, backtest, and methodology.

Incident Analysis

Incidents by decade

Incidents by country (top 10)

Fatalities by country (top 10)

Incidents by region

Fatalities by decade

Injuries by decade

Incidents by category

Fatalities by category

Highest-fatality incidents

Countries with the most incidents

Trend Analysis

Incident frequency over time

Fatality trend over time

Category mix by decade

Cumulative incidents over time

Severity: fatalities vs. injuries