M 6.5 earthquake – 3 km SW of Prato, Italy
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Local time: May 6, 1976 · 21:00 (UTC+1)
StrongShallow · 9.0 km
Reviewed by a seismologist
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- Magnitude
- 6.5surface-wave magnitude (ms)
- Depth
- 9.0 kmShallow earthquake
- Epicenter
- 46.356, 13.27532 km from Udine
- Energy released
- 85 kilotons of TNTabout 5.7 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 9.4max. instrumental (MMI)
- Aftershocks
- 13M2.5+ within 37 km, up to 60 days
- Significance
- 650USGS score, 0–1,000+
The strongest within 300 km on record
No earthquake this strong has been recorded this close since our catalog begins in 1900.
How strong was it?
Strong earthquake. It released 85 kilotons of TNT, 178 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
13 earthquakes of M2.5+ within 37 km in the 60 days after.
- 4.6 3 km N of Majano, Italy May 6, 1976
- 4.7 2 km S of Attimis, Italy May 7, 1976
- 5.9 5 km SW of Chiaulis, Italy May 7, 1976
- 5.1 2 km WSW of Taipana, Italy May 9, 1976
- 4.7 2 km ESE of Comeglians, Italy May 11, 1976
- 5.2 4 km NNE of Anduins, Italy May 11, 1976
- 5.0 4 km SSW of Preone, Italy May 11, 1976
- 4.8 2 km WSW of Colloredo di Monte Albano-Lauzzana, Italy May 13, 1976
- 5.3 1 km NNW of Attimis, Italy May 15, 1976
- 5.1 2 km NE of Forgaria nel Friuli, Italy May 17, 1976
The strongest earthquakes within 300 km
Since 1900, around Italy.
- 6.4 2 km WSW of Petrinja, Croatia Dec 29, 2020
- 6.1 1 km WNW of Lestans, Italy Jun 17, 1976
- 6.1 19 km NNE of Gabicce Mare, Italy May 17, 1916
- 6.0 15 km NNE of Pesaro, Italy Aug 16, 1916
- 6.0 4 km NNE of Massa Finalese, Italy May 20, 2012
- 6.0 5 km NNE of Isola, Italy Sep 15, 1976
- 6.0 28 km NNE of Montignano-Marzocca, Italy Oct 30, 1930
- 6.0 4 km SE of Zuglio, Italy Mar 27, 1928
In the week before
Earthquakes within 37 km in the 7 days before this one: possible foreshocks.