Event-level data

Historical Heatwave Events, 1940-2025

Explore the validated event catalog used across the Heatwave Tracker. Scientific fields are preserved; HPRI and portfolio interpretation live in the risk overlay and Method page.

Data provenance Spatial search Download JSON

Reading This Table

Metric glossary

The table exposes the original event fields used by the website: HWMS, HWMM, HWMA, HWD, HWV, AREA, stT, edT, tol_j, tol_i, and ImageLink. HPRI is a derived interpretation layer and is not written back into this source table.

Interactive catalog

Heatwave Event Explorer

Move between compact event cards, a visual atlas, and the complete source table.

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Visual Atlas

Temporal density, regional concentration, and event structure.

Events by decade

Choose a bar to focus the period

Leading regions

Current filtered set

Event constellation

HWD versus HWMS · select a point
Heatwave duration versus magnitude scale A representative selection of filtered events. Horizontal position is HWD and vertical position is logarithmic HWMS.