Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 21-01-2020 and time 15:21:13 (UTC) in region 4 km W Amatrice (RI)

A magnitude ML 2.0 earthquake occured in region: 4 km W Amatrice (RI), on

  • 21-01-2020 15:21:13 (UTC)
  • 21-01-2020 16:21:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6310, 13.2400 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 4 2657 2657
Cittareale RI 7 482 3139
Accumoli RI 7 667 3806
Montereale AQ 12 2581 6387
Capitignano AQ 13 665 7052
Campotosto AQ 13 542 7594
Borbona RI 16 617 8211
Arquata del Tronto AP 17 1178 9389
Posta RI 17 694 10083
Cagnano Amiterno AQ 19 1369 11452

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
38 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km W of Pescara (121014 inhabitants)
82 Km W of Chieti (51815 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
96 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 2.0 2020-01-21
15:21:13		 42.6307 13.24 12 2020-07-18
21:08:19		 Bollettino Sismico Italiano INGV 75943081
Reviewed
Rev100 		ML 2.1 2020-01-21
15:21:13		 42.6313 13.2468 13 2020-01-21
15:30:08		 Sala Sismica INGV-Roma 75703901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-21 15:21:13 ± 0.06
Latitude 42.6307 ± 0.0027
Longitude 13.2400 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75943081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 369
Semi-minor axis of confidence ellipse (meter) 92
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
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 42
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.85265
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 75943081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-10 09:28:43

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 75703901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-21 15:30:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VITU.HHZ. 2020-01-21T15:22:05.19 3.0 undecidable manual Sn -1.06 0
IV.VENL.HNZ. 2020-01-21T15:21:59.28 3.0 positive manual P 316.6386 -0.06 0
IV.FIR.HHZ. 2020-01-21T15:21:50.44 3.0 undecidable manual P 204.6396 5.05 0
IV.IOCA.HHZ. 2020-01-21T15:21:50.11 3.0 negative manual P 216.117 3.28 0
IV.CRMI.HHZ. 2020-01-21T15:21:50.82 3.0 undecidable manual P 223.8093 3.03 0
IV.MODR.HHZ. 2020-01-21T15:21:43.34 3.0 negative manual P 172.8936 1.91 0
IV.VIVA.HHZ. 2020-01-21T15:21:31.78 3.0 negative manual P 105.0171 0.81 0
IV.FDMO.HHZ. 2020-01-21T15:21:28.38 0.1 undecidable manual S 345 46.7199 91 0.09 93
IV.ARRO.EHZ. 2020-01-21T15:21:26.29 0.1 undecidable manual S 262 39.1275 91 0.02 96
IV.MMO1.EHZ. 2020-01-21T15:21:24.01 0.1 undecidable manual S 13 30.6471 92 0.01 97
IV.MC2.EHZ. 2020-01-21T15:21:24.71 0.1 undecidable manual S 352 31.4463 92 0.5 87
IV.GIGS.HHZ. 2020-01-21T15:21:24.43 0.1 undecidable manual S 126 33.5442 92 -0.35 90
IV.T0110.HHZ. 2020-01-21T15:21:24.46 0.1 undecidable manual P 135 62.493 91 0.04 91
IV.MOMA.HHZ. 2020-01-21T15:21:23.71 0.1 undecidable manual P 290 57.8976 91 0.01 93
IV.CESX.HHZ. 2020-01-21T15:21:23.11 0.1 undecidable manual P 268 53.4021 91 0.1 92
IV.GAVE.EHZ. 2020-01-21T15:21:23.50 0.1 undecidable manual S 284 29.0487 92 -0.07 96
IV.VCEL.EHZ. 2020-01-21T15:21:23.71 0.1 undecidable manual P 118 55.6998 91 0.35 86
IV.OFFI.HHZ. 2020-01-21T15:21:23.11 0.1 undecidable manual P 47 49.617 91 0.69 78
IV.CSP1.EHZ. 2020-01-21T15:21:22.66 0.1 positive manual P 357 51.2154 91 -0.02 94
IV.CESI.HHE. 2020-01-21T15:21:22.48 0.1 undecidable manual P 327 49.7169 91 0.04 93
IV.GUMA.HNN. 2020-01-21T15:21:22.17 0.3 undecidable manual P 9 48.5181 91 -0.09 70
IV.NRCA.HHZ. 2020-01-21T15:21:22.00 0.1 undecidable manual S 336 24.753 93 -0.43 90
IT.MTCL.HGN. 2020-01-21T15:21:21.73 0.1 undecidable manual P 334 44.8218 91 0.04 94
IV.MF5.EHZ. 2020-01-21T15:21:21.78 0.1 positive manual P 24 43.5231 91 0.3 89
IV.FDMO.HHZ. 2020-01-21T15:21:21.54 0.1 undecidable manual P 345 46.7199 91 -0.44 86
IV.CAMP.HHZ. 2020-01-21T15:21:20.33 0.1 undecidable manual S 127 17.3715 98 -0.14 96
IV.MTRA.HNZ. 2020-01-21T15:21:20.44 0.1 undecidable manual S 42 18.9699 96 -0.44 91
IV.LNSS.HHZ. 2020-01-21T15:21:20.25 0.1 undecidable manual S 259 16.5723 99 -0.01 99
IV.ARRO.EHZ. 2020-01-21T15:21:20.75 0.1 undecidable manual P 262 39.1275 91 -0.06 94
IV.MNTT.EHZ. 2020-01-21T15:21:20.94 3.0 undecidable manual P 55.8996 -2.46 0
IV.GAVE.EHZ. 2020-01-21T15:21:19.16 0.1 positive manual P 284 29.0487 92 -0.1 95
IV.MC2.EHZ. 2020-01-21T15:21:19.64 0.1 positive manual P 352 31.4463 92 0.01 97
IV.RM33.HNZ. 2020-01-21T15:21:19.44 0.1 undecidable manual S 189 13.6752 108 -0.06 98
IV.MMO1.EHZ. 2020-01-21T15:21:19.43 0.1 positive manual P 13 30.6471 92 -0.08 96
IV.GIGS.HHZ. 2020-01-21T15:21:19.70 0.1 undecidable manual P 126 33.5442 92 -0.26 92
IV.SMA1.EHZ. 2020-01-21T15:21:18.18 0.1 undecidable manual S 90 7.7811 135 0.01 100
IV.NRCA.HHZ. 2020-01-21T15:21:18.49 0.1 positive manual P 336 24.753 93 -0.11 96
IV.LNSS.HHZ. 2020-01-21T15:21:17.42 0.1 positive manual P 259 16.5723 99 0.08 99
IV.CAMP.HHZ. 2020-01-21T15:21:17.49 0.1 positive manual P 127 17.3715 98 0.03 99
IV.RM33.HNZ. 2020-01-21T15:21:17.03 0.1 positive manual P 189 13.6752 108 0.13 98
IV.MTRA.HNZ. 2020-01-21T15:21:17.60 0.1 positive manual P 42 18.9699 96 -0.1 97
IV.SMA1.EHZ. 2020-01-21T15:21:16.39 0.1 undecidable manual P 90 7.7811 135 0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:2.7 0.007445 0.28 AML other m 2020-01-21T15:21:18.60
IV.SMA1.EHN. ML:2.5 0.004305 0.38 AML other m 2020-01-21T15:21:18.74
IV.RM33.HNE. ML:2.2 0.00172 0.6 AML other m 2020-01-21T15:21:19.62
IV.RM33.EHN. ML:2.1 0.0011205 0.26 AML other m 2020-01-21T15:21:19.75
IV.RM33.HNN. ML:2.1 0.001125 0.16 AML other m 2020-01-21T15:21:19.75
IV.RM33.EHE. ML:2.2 0.0015550000000000002 1.04 AML other m 2020-01-21T15:21:19.84
IV.LNSS.HNN. ML:1.9 0.0006324999999999999 0.3 AML other m 2020-01-21T15:21:20.40
IV.LNSS.HHN. ML:1.9 0.00062 0.28 AML other m 2020-01-21T15:21:20.40
IV.MTRA.HNE. ML:2.2 0.0012645 0.7 AML other m 2020-01-21T15:21:20.43
IV.MTRA.EHE. ML:2.2 0.0013369999999999999 0.7 AML other m 2020-01-21T15:21:20.43
IV.MTRA.HNN. ML:2.3 0.0014750000000000002 0.48 AML other m 2020-01-21T15:21:20.59
IV.MTRA.EHN. ML:2.3 0.0014700000000000002 0.48 AML other m 2020-01-21T15:21:20.59
IV.CAMP.HHE. ML:1.4 0.0001895 0.6 AML other m 2020-01-21T15:21:20.53
IV.LNSS.HHE. ML:1.9 0.0006374999999999999 0.12 AML other m 2020-01-21T15:21:21.19
IV.LNSS.HNE. ML:1.9 0.000606 0.12 AML other m 2020-01-21T15:21:21.19
IV.CAMP.HHN. ML:1.4 0.00018956765 0.2432 AML other m 2020-01-21T15:21:21.48
IV.NRCA.HHN. ML:1.8 0.000393 0.7 AML other m 2020-01-21T15:21:22.26
IV.NRCA.HNN. ML:1.8 0.0003893895 0.1408 AML other m 2020-01-21T15:21:22.27
IV.NRCA.HHE. ML:2.0 0.0005591954 0.1024 AML other m 2020-01-21T15:21:23.63
IV.NRCA.HNE. ML:1.9 0.0005319954 0.1024 AML other m 2020-01-21T15:21:23.64
IV.GAVE.HNE. ML:2.0 0.0005545 0.12 AML other m 2020-01-21T15:21:23.99
IV.GAVE.EHE. ML:2.0 0.0005625 1.86 AML other m 2020-01-21T15:21:23.94
IV.GAVE.HNN. ML:1.7 0.000253 0.96 AML other m 2020-01-21T15:21:24.04
IV.GAVE.EHN. ML:2.1 0.0006599999999999999 1.42 AML other m 2020-01-21T15:21:24.05
IV.GIGS.HHE. ML:1.4 0.00011687765 0.0768 AML other m 2020-01-21T15:21:24.64
IV.FDMO.HHE. ML:1.3 0.0000618 0.24 AML other m 2020-01-21T15:21:29.47
IV.FDMO.HHN. ML:1.4 0.00007264999999999999 0.24 AML other m 2020-01-21T15:21:29.61
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
Waveforms Seismic signals in miniseed + resp format Download