Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 05-01-2021 and time 03:41:57 (UTC) in region 3 km W Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 3 km W Amatrice (RI), on

  • 05-01-2021 03:41:57 (UTC)
  • 05-01-2021 04:41:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6210, 13.2590 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 8 667 3806
Montereale AQ 11 2581 6387
Campotosto AQ 12 542 6929
Capitignano AQ 12 665 7594
Borbona RI 16 617 8211
Posta RI 17 694 8905
Arquata del Tronto AP 17 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)
51 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)
82 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
Reviewed
Rev100 		ML 1.2 2021-01-05
03:41:57		 42.6208 13.2587 13 2021-01-05
04:48:15		 Sala Sismica INGV-Roma 86023521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-05 03:41:57 ± 0.11
Latitude 42.6208 ± 0.0072
Longitude 13.2587 ± 0.0061
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86023521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 643
Semi-minor axis of confidence ellipse (meter) 456
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 344
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39480
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 86023521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-05 04:48:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-01-05T03:42:13.12 3.0 undecidable manual S -0.44 0
IV.MNTT.EHZ. 2021-01-05T03:42:08.50 3.0 undecidable manual P 0.73 0
IV.TERO.HHZ. 2021-01-05T03:42:07.01 0.6 undecidable manual S 89 28.1496 95 -0.3 46
IV.GAVE.EHZ. 2021-01-05T03:42:07.89 0.6 undecidable manual S 285 30.747 95 -0.1 49
IV.MF5.EHZ. 2021-01-05T03:42:06.19 1.0 negative manual P 22 43.8228 93 0.7 20
IV.NRCA.HHZ. 2021-01-05T03:42:06.59 0.6 undecidable manual S 334 26.3514 96 -0.23 47
IV.MTRA.EHZ. 2021-01-05T03:42:04.58 0.6 undecidable manual S 37 18.7701 103 -0.25 48
IV.LNSS.HHZ. 2021-01-05T03:42:04.38 0.6 undecidable manual S 264 17.9709 104 -0.22 48
IV.TERO.HHZ. 2021-01-05T03:42:03.06 0.6 undecidable manual P 89 28.1496 95 -0.02 49
IV.GAVE.EHZ. 2021-01-05T03:42:03.49 0.6 negative manual P 285 30.747 95 0.01 49
IV.MMO1.EHZ. 2021-01-05T03:42:03.74 1.0 undecidable manual P 10 31.3464 94 0.17 24
IV.NRCA.HHZ. 2021-01-05T03:42:02.84 0.1 negative manual P 334 26.3514 96 0.04 99
IV.LNSS.HHZ. 2021-01-05T03:42:01.57 0.1 positive manual P 264 17.9709 104 0.05 100
IV.MTRA.EHZ. 2021-01-05T03:42:01.72 0.1 positive manual P 37 18.7701 103 0.07 100
IV.SMA1.EHZ. 2021-01-05T03:42:01.96 0.6 undecidable manual S 80 6.3936 145 -0.08 50
IV.SMA1.EHZ. 2021-01-05T03:42:00.29 0.1 undecidable manual P 80 6.3936 145 0.25 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.6 0.0005914999999999999 0.38 AML other m 2021-01-05T03:42:02.51
IV.SMA1.EHE. ML:1.8 0.0008085 0.26 AML other m 2021-01-05T03:42:02.20
IV.LNSS.HHN. ML:1.1 0.00010250000000000001 0.34 AML other m 2021-01-05T03:42:04.56
IV.LNSS.HHE. ML:1.2 0.0001275 0.12 AML other m 2021-01-05T03:42:04.68
IV.MTRA.EHE. ML:1.0 0.0000704 0.08 AML other m 2021-01-05T03:42:04.74
IV.MTRA.EHN. ML:1.0 0.0000746 0.44 AML other m 2021-01-05T03:42:04.73
IV.NRCA.HHE. ML:1.2 0.00007445000000000001 1.5 AML other m 2021-01-05T03:42:06.79
IV.NRCA.HHN. ML:1.2 0.000087 0.12 AML other m 2021-01-05T03:42:06.79
IV.TERO.HHE. ML:1.0 0.000047149999999999994 0.06 AML other m 2021-01-05T03:42:07.21
IV.TERO.HHN. ML:1.0 0.00005465 0.18 AML other m 2021-01-05T03:42:07.31
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