Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 03-08-2019 and time 11:15:50 (Italy) in region 3 km N Amatrice (RI)

A magnitude ML 1.9 earthquake occured in region: 3 km N Amatrice (RI), on

  • 03-08-2019 09:15:50 (UTC)
  • 03-08-2019 11:15:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6540, 13.2800 at 8 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
Accumoli RI 5 667 3324
Cittareale RI 11 482 3806
Campotosto AQ 13 542 4348
Arquata del Tronto AP 13 1178 5526
Montereale AQ 15 2581 8107
Capitignano AQ 15 665 8772
Acquasanta Terme AP 17 2916 11688
Cortino TE 19 656 12344
Borbona RI 20 617 12961

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Teramo (54892 inhabitants)
35 Km N of L'Aquila (69753 inhabitants)
53 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
100 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 1.9 2019-08-03
09:15:50		 42.6538 13.28 8 2019-11-13
14:30:58		 Bollettino Sismico Italiano INGV 71647221
Reviewed
Rev100 		ML 1.9 2019-08-03
09:15:50		 42.6537 13.2813 8 2019-08-03
09:24:32		 Sala Sismica INGV-Roma 71134541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-03 09:15:50 ± 0.04
Latitude 42.6538 ± 0.0027
Longitude 13.2800 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 71647221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 314
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.68708
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 71647221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-20 10:38:22

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 71134541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-03 09:24:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IMTC.HHZ. 2019-08-03T09:16:28.78 3.0 negative manual Pg 4.57 0
IT.VNF1.HGZ. 2019-08-03T09:16:17.97 3.0 negative manual P 3.04 0
IV.MGAB.HHZ. 2019-08-03T09:16:10.57 3.0 positive manual P 1.92 0
IV.FDMO.HHZ. 2019-08-03T09:16:05.88 0.3 undecidable manual S 340 45.2214 50 -0.15 70
IV.MF5.EHZ. 2019-08-03T09:16:05.16 0.3 undecidable manual S 21 39.8268 50 0.58 63
IV.EL6.EHZ. 2019-08-03T09:16:04.34 0.3 undecidable manual P 349 76.2681 50 -0.07 67
IV.T0110.HHZ. 2019-08-03T09:16:02.09 0.1 undecidable manual P 139 62.1933 50 -0.14 90
IV.ASSB.HHZ. 2019-08-03T09:16:02.60 0.3 undecidable manual P 311 66.378 50 -0.28 65
IV.MNTT.EHZ. 2019-08-03T09:16:01.51 0.3 undecidable manual P 29 52.0035 50 0.85 55
IV.VCEL.EHZ. 2019-08-03T09:16:01.08 0.1 undecidable manual P 122 54.1014 50 0.09 92
IV.MC2.EHZ. 2019-08-03T09:16:01.80 0.3 undecidable manual S 345 29.5482 106 0.31 69
IV.MOMA.HHZ. 2019-08-03T09:16:01.75 0.3 undecidable manual P 286 60.1953 50 -0.17 67
IV.GAVE.EHZ. 2019-08-03T09:16:01.86 0.3 undecidable manual S 278 31.746 105 -0.38 68
IV.CSP1.EHZ. 2019-08-03T09:16:00.12 0.1 undecidable manual P 353 48.9177 50 -0.07 94
IV.MMO1.EHZ. 2019-08-03T09:16:00.60 0.3 undecidable manual S 8 27.4503 107 -0.22 71
IV.CESI.HHZ. 2019-08-03T09:16:00.14 0.1 undecidable manual P 322 49.5171 50 -0.13 92
IV.FAGN.HHZ. 2019-08-03T09:16:00.43 0.3 undecidable manual P 150 49.7169 50 0.12 69
IV.FIAM.HHZ. 2019-08-03T09:15:59.32 0.3 undecidable manual P 197 44.8218 50 -0.24 68
IV.TERO.HHZ. 2019-08-03T09:15:59.97 0.3 undecidable manual S 97 26.6511 107 -0.58 65
IV.FDMO.HHZ. 2019-08-03T09:15:59.48 0.3 undecidable manual P 340 45.2214 50 -0.14 70
IV.NRCA.HHZ. 2019-08-03T09:15:59.57 0.3 undecidable manual S 326 24.0537 109 -0.12 73
IV.GUMA.HHZ. 2019-08-03T09:15:59.83 0.3 undecidable manual P 6 45.5211 50 0.16 69
IV.FEMA.HNE. 2019-08-03T09:15:58.71 0.3 undecidable manual P 331 39.0276 50 0.06 72
IV.ARRO.EHZ. 2019-08-03T09:15:58.85 0.6 undecidable manual P 259 42.8238 50 -0.39 44
IV.LNSS.HHZ. 2019-08-03T09:15:58.75 0.3 undecidable manual S 254 20.3685 112 0.26 71
IV.MF5.EHZ. 2019-08-03T09:15:58.96 0.1 positive manual P 21 39.8268 50 0.18 93
IV.CAMP.HHZ. 2019-08-03T09:15:57.29 0.3 undecidable manual S 141 16.7721 116 -0.07 74
IV.GAVE.EHZ. 2019-08-03T09:15:57.19 0.1 undecidable manual P 278 31.746 105 -0.24 93
IV.RM33.EHZ. 2019-08-03T09:15:57.57 0.3 undecidable manual S 198 16.9719 116 0.17 73
IV.GIGS.HHZ. 2019-08-03T09:15:57.19 0.3 undecidable manual P 133 32.6451 104 -0.43 67
IV.MC2.EHZ. 2019-08-03T09:15:56.99 0.3 undecidable manual P 345 29.5482 106 -0.01 74
IV.NRCA.HHZ. 2019-08-03T09:15:56.04 0.3 undecidable manual P 326 24.0537 109 0.08 73
IV.TERO.HHZ. 2019-08-03T09:15:56.20 0.1 undecidable manual P 97 26.6511 107 -0.25 94
IV.MMO1.EHZ. 2019-08-03T09:15:56.54 0.3 undecidable manual P 8 27.4503 107 -0.07 73
IV.MTRA.HNZ. 2019-08-03T09:15:56.52 0.3 undecidable manual S 40 14.874 119 -0.23 72
IV.LNSS.HHZ. 2019-08-03T09:15:55.49 0.1 positive manual P 254 20.3685 112 0.22 95
IV.MTRA.HNZ. 2019-08-03T09:15:54.40 0.1 positive manual P 40 14.874 119 0.14 98
IV.CAMP.HHZ. 2019-08-03T09:15:54.78 0.1 positive manual P 141 16.7721 116 0.17 97
IV.SMA1.EHZ. 2019-08-03T09:15:54.35 0.3 undecidable manual S 120 5.1948 148 0.11 75
IV.RM33.EHZ. 2019-08-03T09:15:54.90 0.1 positive manual P 198 16.9719 116 0.26 95
IV.SMA1.EHZ. 2019-08-03T09:15:53.15 0.1 positive manual P 120 5.1948 148 0.33 96
IV.T1299.HNZ. 2019-08-03T09:15:53.67 0.1 undecidable manual S 175 2.1978 165 -0.15 100
IV.T1299.HNZ. 2019-08-03T09:15:52.81 0.1 negative manual P 175 2.1978 165 0.24 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:2.4 0.0028450000000000003 0.2 AML other m 2019-08-03T09:15:57.07
IV.MTRA.EHE. ML:2.4 0.002855 0.2 AML other m 2019-08-03T09:15:57.07
IV.MTRA.EHN. ML:2.2 0.00181 0.32 AML other m 2019-08-03T09:15:57.61
IV.MTRA.HNN. ML:2.2 0.001795 0.32 AML other m 2019-08-03T09:15:57.61
IV.CAMP.HHE. ML:1.8 0.000623 0.2 AML other m 2019-08-03T09:15:57.62
IV.CAMP.HHN. ML:1.7 0.00041349999999999997 0.24 AML other m 2019-08-03T09:15:57.65
IV.RM33.HNN. ML:1.7 0.0005304999999999999 1.24 AML other m 2019-08-03T09:15:58.71
IV.RM33.EHN. ML:1.7 0.00053 0.26 AML other m 2019-08-03T09:15:58.22
IV.LNSS.HHE. ML:2.0 0.0008465 0.22 AML other m 2019-08-03T09:15:59.52
IV.NRCA.HHE. ML:2.4 0.0017250000000000002 0.14 AML other m 2019-08-03T09:15:59.96
IV.NRCA.HNE. ML:2.4 0.0016099999999999999 0.14 AML other m 2019-08-03T09:15:59.96
IV.NRCA.HHN. ML:2.2 0.0009184999999999999 1.26 AML other m 2019-08-03T09:16:00.81
IV.NRCA.HNN. ML:2.1 0.0008185 0.64 AML other m 2019-08-03T09:16:00.19
IV.LNSS.HHN. ML:2.0 0.0007130000000000001 0.34 AML other m 2019-08-03T09:16:00.38
IV.RM33.HNE. ML:1.9 0.0006670000000000001 0.56 AML other m 2019-08-03T09:16:00.40
IV.RM33.EHE. ML:1.8 0.000631 0.56 AML other m 2019-08-03T09:16:00.40
IV.GIGS.HHN. ML:1.2 0.00006805 0.18 AML other m 2019-08-03T09:16:02.48
IV.GAVE.EHN. ML:2.3 0.0008954999999999999 0.2 AML other m 2019-08-03T09:16:02.52
IV.GIGS.HHE. ML:1.1 0.00005875 0.3 AML other m 2019-08-03T09:16:02.38
IV.GAVE.EHE. ML:2.3 0.0008715000000000001 1.82 AML other m 2019-08-03T09:16:03.95
IV.MF5.EHE. ML:2.0 0.0003285 1.02 AML other m 2019-08-03T09:16:05.91
IV.MF5.EHN. ML:2.1 0.0004125 0.48 AML other m 2019-08-03T09:16:05.48
IV.FDMO.HHN. ML:1.7 0.000141 1.82 AML other m 2019-08-03T09:16:06.00
IV.FIAM.HHN. ML:1.1 0.00003845 0.76 AML other m 2019-08-03T09:16:06.60
IV.GUMA.HHE. ML:2.2 0.0005335000000000001 0.64 AML other m 2019-08-03T09:16:07.38
IV.CESI.HHE. ML:1.8 0.00015099999999999998 1.02 AML other m 2019-08-03T09:16:07.46
IV.ARRO.EHE. ML:1.5 0.000106 0.46 AML other m 2019-08-03T09:16:07.24
IV.GUMA.HHN. ML:2.0 0.000326 0.34 AML other m 2019-08-03T09:16:07.49
IV.CESI.HHN. ML:2.0 0.0002985 0.5 AML other m 2019-08-03T09:16:07.74
IV.FDMO.HHE. ML:1.6 0.00011999999999999999 1.16 AML other m 2019-08-03T09:16:08.06
IV.CSP1.EHN. ML:1.9 0.00021850000000000003 0.64 AML other m 2019-08-03T09:16:09.10
IV.FAGN.HHN. ML:1.8 0.0001715 0.3 AML other m 2019-08-03T09:16:09.42
IV.CSP1.EHE. ML:1.8 0.0001606 0.7 AML other m 2019-08-03T09:16:10.07
IV.ARRO.EHN. ML:1.6 0.000126 0.2 AML other m 2019-08-03T09:16:10.41
IV.FIAM.HHE. ML:1.3 0.0000528 0.3 AML other m 2019-08-03T09:16:10.99
IV.VCEL.EHN. ML:2.0 0.00020750000000000003 0.38 AML other m 2019-08-03T09:16:11.13
IV.VCEL.EHE. ML:2.0 0.000258 0.3 AML other m 2019-08-03T09:16:11.07
IV.T0110.HHN. ML:1.8 0.0001225 0.36 AML other m 2019-08-03T09:16:11.74
IV.MOMA.HHE. ML:1.9 0.000182 0.22 AML other m 2019-08-03T09:16:12.10
IV.MOMA.HHN. ML:2.0 0.00020800000000000001 0.18 AML other m 2019-08-03T09:16:12.14
IV.ASSB.HHE. ML:1.6 0.00008215 0.42 AML other m 2019-08-03T09:16:13.24
IV.ASSB.HHN. ML:1.7 0.0000838 0.2 AML other m 2019-08-03T09:16:14.27
IV.FAGN.HHE. ML:1.9 0.000217 0.38 AML other m 2019-08-03T09:16:14.19
IV.T0110.HHE. ML:1.8 0.00013450000000000002 0.44 AML other m 2019-08-03T09:16:16.61
IV.EL6.EHN. ML:2.0 0.00015099999999999998 1.34 AML other m 2019-08-03T09:16:19.31
IV.EL6.EHE. ML:1.9 0.0001157 0.56 AML other m 2019-08-03T09:16:20.20
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