Every magnitude-7+ earthquake, one pixel per day

1985-01-01 → 2026-10-11 · 15,259 days · 611 events · USGS FDSN, fetched 2026-10-11. Blue ticks = magnitude of that day's largest quake, measured up from the rule. Green = 1-2 quakes, amber = 3. Nothing is smoothed, averaged, or resampled. Most of this image is nothing.

{'days': 15259, 'events': 611, 'rows_skipped': 0, 'days_with_quake': 576, 'max_per_day': 3, 'max_day': '2009-10-07', 'longest_quiet_gap_days': 175, 'gap_start': '2017-01-23', 'mean_per_day': 0.04, 'largest_mag': 9.1}