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M6.6 earthquake, Italy, 1930-07-23

MagnitudeM6.6mw

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Depth15 km

Time (UTC)1930-07-23 00:08

Rank in 193015 / 97among M6+

Rank since 19003252 / 14,458

Energy vs an M6×9approx.

3 km SSW of Bisaccia Nuova, Italy · 40.98, 15.34

M6.5+ within 300 km (largest first)

1905 M7.2M7.2

1980 M6.9M6.9

1915 M6.7M6.7

1930 M6.6M6.6

2016 M6.6M6.6

1910 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1915-07-07	1915-07-07 16:42	320 km	25 km W of San Marco, Italy
M6.7 1915-01-13	1915-01-13 06:52	15 km	4 km WNW of San Benedetto dei Marsi, Italy
M6.5 1910-08-01	1910-08-01 10:40	260 km	72 km WSW of Cittadella del Capo, Italy
M7.2 1905-09-08	1905-09-08 01:43	15 km	5 km W of San Nicolò, Italy

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.