Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 12-05-2020 and time 04:01:26 (UTC) in region 3 km SW Amatrice (RI)

A magnitude ML 1.6 earthquake occured in region: 3 km SW Amatrice (RI), on

  • 12-05-2020 04:01:26 (UTC)
  • 12-05-2020 06:01:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6180, 13.2590 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 3 2657 2657
Cittareale RI 8 482 3139
Accumoli RI 9 667 3806
Montereale AQ 10 2581 6387
Campotosto AQ 11 542 6929
Capitignano AQ 11 665 7594
Borbona RI 16 617 8211
Posta RI 17 694 8905
Arquata del Tronto AP 18 1178 10083
Cagnano Amiterno AQ 18 1369 11452
Barete AQ 19 737 12189
Crognaleto TE 20 1297 13486

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
80 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.6 2020-05-12
04:01:26		 42.6177 13.259 12 2020-11-19
12:36:46		 Bollettino Sismico Italiano INGV 79615821
Reviewed
Rev100 		ML 1.6 2020-05-12
04:01:26		 42.6292 13.2467 10 2020-05-12
04:06:46		 Sala Sismica INGV-Roma 79066791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-12 04:01:26 ± 0.11
Latitude 42.6177 ± 0.0054
Longitude 13.2590 ± 0.0086
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79615821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 720
Semi-minor axis of confidence ellipse (meter) 281
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50812
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 79615821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-27 09:26:31

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 79066791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-12 04:06:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SAMA.EHZ. 2020-05-12T04:01:45.95 3.0 undecidable manual P 1.49 0
IV.LAV9.HNZ. 2020-05-12T04:01:44.89 3.0 undecidable manual P -0.59 0
IV.MF5.EHZ. 2020-05-12T04:01:42.01 0.1 undecidable manual S 22 44.2224 91 0.87 74
IV.FDMO.HHZ. 2020-05-12T04:01:41.97 0.3 undecidable manual S 343 48.5181 91 -0.32 68
IV.ARRO.EHZ. 2020-05-12T04:01:39.92 0.3 undecidable manual S 264 40.5261 91 -0.24 71
IV.MNTT.EHZ. 2020-05-12T04:01:37.92 0.1 undecidable manual P 29 56.3991 90 0.93 71
IV.MMO1.EHZ. 2020-05-12T04:01:37.68 0.3 undecidable manual S 10 31.746 91 -0.13 72
IV.CSP1.EHZ. 2020-05-12T04:01:36.34 0.1 undecidable manual P 355 52.8027 91 -0.1 94
IV.TERO.HHZ. 2020-05-12T04:01:36.53 0.3 undecidable manual S 89 28.1496 91 -0.33 68
IV.MF5.EHZ. 2020-05-12T04:01:35.53 0.1 undecidable manual P 22 44.2224 91 0.42 88
IV.FDMO.HHZ. 2020-05-12T04:01:35.61 0.3 undecidable manual P 343 48.5181 91 -0.17 70
IV.NRCA.HHZ. 2020-05-12T04:01:35.92 0.1 undecidable manual S 334 26.6511 92 -0.55 90
IV.FIAM.HNN. 2020-05-12T04:01:34.85 0.1 undecidable manual P 197 40.5261 91 0.3 90
IV.MC2.EHZ. 2020-05-12T04:01:34.27 0.3 undecidable manual P 350 33.0447 91 0.87 56
IV.FAGN.HHZ. 2020-05-12T04:01:34.99 0.3 undecidable manual P 146 47.2194 91 -0.6 61
IV.ARRO.EHZ. 2020-05-12T04:01:34.36 0.1 undecidable manual P 264 40.5261 91 -0.19 95
IV.GIGS.HHN. 2020-05-12T04:01:33.02 0.3 undecidable manual P 125 31.4463 91 -0.14 71
IV.MTRA.EHZ. 2020-05-12T04:01:33.93 0.1 undecidable manual S 36 19.0698 93 -0.5 90
IV.MMO1.EHZ. 2020-05-12T04:01:33.01 0.1 undecidable manual P 10 31.746 91 -0.18 95
IV.CAMP.HHE. 2020-05-12T04:01:33.43 0.1 undecidable manual S 127 15.2736 99 0.01 99
IV.NRCA.HHZ. 2020-05-12T04:01:32.21 0.1 positive manual P 334 26.6511 92 -0.21 96
IV.RM33.EHZ. 2020-05-12T04:01:32.83 0.1 undecidable manual S 197 12.5763 110 0.09 99
IV.TERO.HHZ. 2020-05-12T04:01:32.53 0.1 undecidable manual P 89 28.1496 91 -0.12 96
IV.MTRA.EHZ. 2020-05-12T04:01:31.14 0.1 positive manual P 36 19.0698 93 -0.1 98
IV.CAMP.HHE. 2020-05-12T04:01:30.92 0.1 undecidable manual P 127 15.2736 99 0.26 97
IV.T1299.HNN. 2020-05-12T04:01:30.70 0.1 undecidable manual S 46 2.5974 163 -0.23 98
IV.RM33.EHZ. 2020-05-12T04:01:30.55 0.1 positive manual P 197 12.5763 110 0.29 95
IV.T1299.HNN. 2020-05-12T04:01:29.38 0.1 negative manual P 46 2.5974 163 0.16 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.6 0.000449 0.62 AML other m 2020-05-12T04:01:33.02
IV.RM33.EHE. ML:1.6 0.000424 0.62 AML other m 2020-05-12T04:01:33.02
IV.RM33.EHN. ML:1.7 0.0005309999999999999 0.12 AML other m 2020-05-12T04:01:33.22
IV.RM33.HNN. ML:1.7 0.0005475 0.12 AML other m 2020-05-12T04:01:33.22
IV.MTRA.HNN. ML:1.7 0.000358 0.98 AML other m 2020-05-12T04:01:34.24
IV.MTRA.EHN. ML:1.5 0.0002465 0.98 AML other m 2020-05-12T04:01:34.25
IV.MTRA.EHE. ML:1.8 0.0004505 1.18 AML other m 2020-05-12T04:01:34.94
IV.MTRA.HNE. ML:1.8 0.0004535 1.18 AML other m 2020-05-12T04:01:34.94
IV.NRCA.HHN. ML:1.4 0.00014500000000000003 1.18 AML other m 2020-05-12T04:01:36.74
IV.NRCA.HHE. ML:1.8 0.0003055 0.1 AML other m 2020-05-12T04:01:36.62
IV.TERO.HHN. ML:1.3 0.00010025000000000001 1.1 AML other m 2020-05-12T04:01:37.89
IV.TERO.HHE. ML:1.2 0.00008375 0.42 AML other m 2020-05-12T04:01:38.80
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download