Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 16-01-2021 and time 16:54:00 (UTC) in region 5 km NE Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 5 km NE Amatrice (RI), on

  • 16-01-2021 16:54:00 (UTC)
  • 16-01-2021 17:54:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6750, 13.3160 at 14 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 5 2657 2657
Accumoli RI 6 667 3324
Arquata del Tronto AP 11 1178 4502
Acquasanta Terme AP 13 2916 7418
Campotosto AQ 14 542 7960
Cittareale RI 14 482 8442
Valle Castellana TE 16 977 9419
Cortino TE 17 656 10075
Capitignano AQ 17 665 10740
Rocca Santa Maria TE 17 537 11277
Montereale AQ 18 2581 13858
Montegallo AP 19 523 14381
Crognaleto TE 19 1297 15678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km W of Teramo (54892 inhabitants)
37 Km N of L'Aquila (69753 inhabitants)
56 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
79 Km W of Chieti (51815 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
90 Km NE of Tivoli (56533 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 1.2 2021-01-16
16:54:00		 42.675 13.3157 14 2021-07-12
16:55:00		 Bollettino Sismico Italiano INGV 87715251
Reviewed
Rev100 		ML 1.2 2021-01-16
16:54:00		 42.6762 13.3145 13 2021-01-16
17:14:53		 Sala Sismica INGV-Roma 86305731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-16 16:54:00 ± 0.06
Latitude 42.6750 ± 0.0027
Longitude 13.3157 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87715251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 298
Semi-minor axis of confidence ellipse (meter) 140
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.39840
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 87715251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-04 12:50:13

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 86305731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-16 17:14:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-01-16T16:54:14.98 0.6 undecidable manual S 335 44.2224 95 0.19 46
IV.MC2.EHZ. 2021-01-16T16:54:10.89 0.6 undecidable manual S 339 28.1496 100 0.34 46
IV.TERO.HHZ. 2021-01-16T16:54:09.36 0.3 undecidable manual S 104 24.2535 103 -0.15 72
IV.NRCA.HHZ. 2021-01-16T16:54:09.18 0.3 undecidable manual S 317 24.0537 103 -0.29 71
IV.MMO1.EHZ. 2021-01-16T16:54:09.82 0.6 undecidable manual S 2 24.9528 102 0.13 49
IV.LNSS.HHZ. 2021-01-16T16:54:09.37 0.6 undecidable manual S 251 23.8539 103 -0.05 50
IV.RM33.EHZ. 2021-01-16T16:54:08.44 0.6 undecidable manual S 204 20.1687 108 -0.03 50
IV.FDMO.HHZ. 2021-01-16T16:54:08.65 0.3 undecidable manual P 335 44.2224 95 -0.11 71
IV.CAMP.HHZ. 2021-01-16T16:54:07.62 0.3 undecidable manual S 154 17.1717 113 -0.11 74
IV.MC2.EHZ. 2021-01-16T16:54:06.21 0.3 undecidable manual P 339 28.1496 100 -0.1 73
IV.MTRA.EHZ. 2021-01-16T16:54:06.23 0.3 undecidable manual S 36 11.1777 130 -0.14 74
IV.MMO1.EHZ. 2021-01-16T16:54:05.88 0.3 undecidable manual P 2 24.9528 102 0.07 74
IV.T1299.HNZ. 2021-01-16T16:54:05.44 0.3 undecidable manual S 211 5.2947 154 0.05 77
IV.LNSS.HHZ. 2021-01-16T16:54:05.61 0.1 undecidable manual P 251 23.8539 103 -0.04 100
IV.RM33.EHZ. 2021-01-16T16:54:05.12 0.1 undecidable manual P 204 20.1687 108 0.01 100
IV.TERO.HHZ. 2021-01-16T16:54:05.72 0.1 undecidable manual P 104 24.2535 103 0.01 100
IV.SMA1.EHZ. 2021-01-16T16:54:05.13 0.3 undecidable manual S 162 5.1948 154 -0.25 73
IV.NRCA.HHZ. 2021-01-16T16:54:05.55 0.1 undecidable manual P 317 24.0537 103 -0.13 97
IV.MTRA.EHZ. 2021-01-16T16:54:04.00 0.1 undecidable manual P 36 11.1777 130 0.11 100
IV.CAMP.HHZ. 2021-01-16T16:54:04.78 0.1 undecidable manual P 154 17.1717 113 0.1 99
IV.SMA1.EHZ. 2021-01-16T16:54:03.50 0.1 undecidable manual P 162 5.1948 154 0.18 99
IV.T1299.HNZ. 2021-01-16T16:54:03.56 0.1 undecidable manual P 211 5.2947 154 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.2 0.000192 0.28 AML other m 2021-01-16T16:54:05.54
IV.SMA1.EHE. ML:1.3 0.00022299999999999997 0.22 AML other m 2021-01-16T16:54:05.61
IV.MTRA.EHE. ML:1.2 0.0001565 0.42 AML other m 2021-01-16T16:54:06.22
IV.MTRA.EHN. ML:1.3 0.000185 0.54 AML other m 2021-01-16T16:54:06.30
IV.RM33.EHN. ML:1.2 0.00010645 0.7 AML other m 2021-01-16T16:54:08.57
IV.NRCA.HHN. ML:1.2 0.00008834999999999999 0.16 AML other m 2021-01-16T16:54:09.48
IV.NRCA.HHE. ML:1.2 0.0000973 0.18 AML other m 2021-01-16T16:54:09.44
IV.RM33.EHE. ML:1.1 0.00008659999999999999 0.66 AML other m 2021-01-16T16:54:10.44
IV.LNSS.HHN. ML:1.2 0.00008305 1.54 AML other m 2021-01-16T16:54:14.90
IV.LNSS.HHE. ML:1.1 0.00006425 0.42 AML other m 2021-01-16T16:54:16.04
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