Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 28-09-2019 and time 22:57:19 (Italy) in region 4 km W Arquata del Tronto (AP)

A magnitude ML 1.9 earthquake occured in region: 4 km W Arquata del Tronto (AP), on

  • 28-09-2019 20:57:19 (UTC)
  • 28-09-2019 22:57:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7760, 13.2450 at 11 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
Arquata del Tronto AP 4 1178 1178
Accumoli RI 9 667 1845
Montegallo AP 10 523 2368
Norcia PG 13 4957 7325
Acquasanta Terme AP 14 2916 10241
Castelsantangelo sul Nera MC 15 281 10522
Montemonaco AP 15 604 11126
Amatrice RI 17 2657 13783
Cittareale RI 19 482 14265
Cascia PG 20 3217 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Teramo (54892 inhabitants)
48 Km E of Foligno (57155 inhabitants)
49 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
79 Km E of Perugia (166134 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
87 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km S of Ancona (100861 inhabitants)
97 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 1.9 2019-09-28
20:57:19		 42.776 13.2452 11 2020-02-28
16:42:14		 Bollettino Sismico Italiano INGV 74701801
Reviewed
Rev100 		ML 2.0 2019-09-28
20:57:20		 42.7753 13.2453 11 2019-09-28
21:06:40		 Sala Sismica INGV-Roma 72865501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-28 20:57:19 ± 0.05
Latitude 42.7760 ± 0.0018
Longitude 13.2452 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 74701801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 256
Semi-minor axis of confidence ellipse (meter) 127
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) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 32
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 51
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) 0.67179
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 25
Type of magnitude ML
Reference to an origin 74701801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-17 08:45:41

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 72865501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-28 21:06:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2019-09-28T20:58:06.24 3.0 undecidable manual Sg 10.65 0
IV.FIAM.HHZ. 2019-09-28T20:57:37.86 0.3 undecidable manual S 191 57.2982 50 0.11 68
IV.MML1.HNZ. 2019-09-28T20:57:33.86 0.3 undecidable manual S 329 43.5231 50 -0.21 69
IV.PF6.EHZ. 2019-09-28T20:57:33.08 0.3 undecidable manual S 354 40.3263 50 -0.14 70
IV.CESI.HHZ. 2019-09-28T20:57:32.53 0.3 undecidable manual S 313 37.5291 50 0.05 71
IV.T0110.HHZ. 2019-09-28T20:57:32.77 0.6 undecidable manual P 144 74.5698 50 -0.12 44
IV.SAP2.EHZ. 2019-09-28T20:57:32.83 0.3 undecidable manual S 19 37.7289 50 0.31 68
IV.FOSV.EHZ. 2019-09-28T20:57:32.16 0.6 undecidable manual P 326 69.6747 50 0.02 45
IV.CSP1.EHZ. 2019-09-28T20:57:31.77 0.1 undecidable manual S 355 35.2425 50 -0.07 96
IV.VCEL.EHZ. 2019-09-28T20:57:31.20 0.6 undecidable manual P 131 64.491 50 -0.13 45
IV.FAGN.HHZ. 2019-09-28T20:57:31.44 0.3 undecidable manual P 154 62.9925 50 0.33 65
IV.ATCC.EHZ. 2019-09-28T20:57:31.58 0.6 undecidable manual P 313 66.8775 50 -0.13 45
IV.GUMA.HHZ. 2019-09-28T20:57:31.49 0.3 undecidable manual S 13 32.6451 50 0.33 68
IV.RM33.EHZ. 2019-09-28T20:57:30.51 0.3 undecidable manual S 185 29.748 50 0.12 72
IV.FIAM.HHZ. 2019-09-28T20:57:30.02 0.1 undecidable manual P 191 57.2982 50 -0.21 89
IV.TRTR.HHZ. 2019-09-28T20:57:30.01 0.6 undecidable manual P 86 54.501 50 0.2 45
IV.MF5.EHZ. 2019-09-28T20:57:30.61 0.6 undecidable manual S 37 29.2485 50 0.35 45
IV.FDMO.HHZ. 2019-09-28T20:57:30.70 0.3 undecidable manual S 336 31.6461 50 -0.19 71
IV.CAMP.HHZ. 2019-09-28T20:57:30.11 0.3 undecidable manual S 153 29.8479 50 -0.3 69
IV.EL6.EHZ. 2019-09-28T20:57:30.72 0.6 undecidable manual P 349 62.493 50 -0.31 43
IV.LNSS.HHZ. 2019-09-28T20:57:29.53 0.3 undecidable manual S 221 25.4523 50 0.29 70
IV.MOMA.HHZ. 2019-09-28T20:57:29.93 0.3 undecidable manual P 273 55.0005 50 0.05 69
MN.AQU.HNZ. 2019-09-28T20:57:29.02 0.6 undecidable manual P 164 48.618 50 0.13 46
IV.FEMA.HNZ. 2019-09-28T20:57:29.42 0.6 undecidable manual S 322 26.0517 50 0.02 49
IV.GIGS.HHZ. 2019-09-28T20:57:28.00 0.3 undecidable manual P 143 44.7219 50 -0.29 67
IV.MNTT.EHZ. 2019-09-28T20:57:28.56 0.3 undecidable manual P 42 42.624 50 0.59 62
IV.ARRO.EHZ. 2019-09-28T20:57:28.24 0.3 undecidable manual P 241 44.8218 50 -0.06 70
IT.VNF1.HGZ. 2019-09-28T20:57:27.18 3.0 undecidable manual Pn -0.31 0
IV.OFFI.HHZ. 2019-09-28T20:57:27.67 0.3 undecidable manual P 64 39.9267 50 0.12 70
IV.MML1.HNZ. 2019-09-28T20:57:27.91 0.1 undecidable manual P 329 43.5231 50 -0.2 92
IV.PF6.EHZ. 2019-09-28T20:57:27.37 0.3 undecidable manual P 354 40.3263 50 -0.25 68
IV.CESI.HHZ. 2019-09-28T20:57:27.09 0.1 undecidable manual P 313 37.5291 50 -0.1 95
IV.SMA1.EHZ. 2019-09-28T20:57:27.02 0.3 undecidable manual S 156 17.7711 50 -0.16 72
IV.SAP2.EHZ. 2019-09-28T20:57:27.30 0.1 undecidable manual P 19 37.7289 50 0.09 95
IV.MMO1.EHZ. 2019-09-28T20:57:26.24 0.3 undecidable manual S 26 15.1737 126 -0.23 71
IV.T1299.HNZ. 2019-09-28T20:57:26.90 0.3 undecidable manual S 169 15.9729 124 0.19 72
IV.GUMA.HHZ. 2019-09-28T20:57:26.53 0.1 undecidable manual P 13 32.6451 50 0.1 95
IT.PLTA.HNZ. 2019-09-28T20:57:26.49 3.0 undecidable manual Pn -1.44 0
IV.CSP1.EHZ. 2019-09-28T20:57:26.59 0.1 undecidable manual P 355 35.2425 50 -0.23 92
IV.MC2.EHZ. 2019-09-28T20:57:26.85 0.3 undecidable manual S 343 15.6732 125 0.23 72
IV.MF5.EHZ. 2019-09-28T20:57:26.01 0.1 undecidable manual P 37 29.2485 50 0.1 96
IV.CPGN.EHZ. 2019-09-28T20:57:26.06 3.0 undecidable manual P 0.13 0
IV.FDMO.HHZ. 2019-09-28T20:57:26.02 0.1 undecidable manual P 336 31.6461 50 -0.25 93
IV.CAMP.HHZ. 2019-09-28T20:57:25.77 0.1 undecidable manual P 153 29.8479 50 -0.22 93
IV.NRCA.HNZ. 2019-09-28T20:57:25.90 0.3 undecidable manual S 301 12.3765 131 0.18 73
IV.FEMA.HNZ. 2019-09-28T20:57:25.32 0.1 undecidable manual P 322 26.0517 50 -0.1 97
IV.RM33.EHZ. 2019-09-28T20:57:25.93 0.1 undecidable manual P 185 29.748 50 -0.05 97
IV.LNSS.HHZ. 2019-09-28T20:57:25.39 0.1 undecidable manual P 221 25.4523 50 0.07 97
IV.MTRA.HNZ. 2019-09-28T20:57:25.52 0.3 undecidable manual S 100 12.4764 131 -0.22 72
IV.SMA1.EHZ. 2019-09-28T20:57:24.12 0.1 undecidable manual P 156 17.7711 50 -0.02 99
IV.T1299.HNZ. 2019-09-28T20:57:24.07 0.1 undecidable manual P 169 15.9729 124 0.21 96
IV.MTRA.HNZ. 2019-09-28T20:57:23.30 0.1 undecidable manual P 100 12.4764 131 -0.01 100
IV.MMO1.EHZ. 2019-09-28T20:57:23.66 0.1 undecidable manual P 26 15.1737 126 -0.07 98
IV.NRCA.HNZ. 2019-09-28T20:57:23.46 0.1 undecidable manual P 301 12.3765 131 0.17 98
IV.MC2.EHZ. 2019-09-28T20:57:23.93 0.1 undecidable manual P 343 15.6732 125 0.12 98
IV.VIVA.HHZ. 2019-09-28T20:57:21.31 3.0 undecidable manual Pn -1.96 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.COR1.EHE. ML:2.2 0.00018099999999999998 0.42 AML other m 2019-09-28T20:57:22.01
IV.COR1.EHN. ML:1.9 0.0000745 0.58 AML other m 2019-09-28T20:57:23.27
IV.MTRA.EHE. ML:2.3 0.001955 0.44 AML other m 2019-09-28T20:57:25.68
IV.MTRA.HNE. ML:2.3 0.002005 0.44 AML other m 2019-09-28T20:57:25.68
IV.MTRA.EHN. ML:2.2 0.00158 1.66 AML other m 2019-09-28T20:57:25.15
IV.MTRA.HNN. ML:2.2 0.001565 1.68 AML other m 2019-09-28T20:57:25.14
IV.SMA1.EHE. ML:1.7 0.00039200000000000004 0.32 AML other m 2019-09-28T20:57:27.39
IV.SMA1.EHN. ML:1.5 0.0002485 1.1 AML other m 2019-09-28T20:57:27.87
IV.LNSS.HHE. ML:2.1 0.0007255 0.58 AML other m 2019-09-28T20:57:30.06
IV.LNSS.HHN. ML:2.2 0.0008045 1.14 AML other m 2019-09-28T20:57:30.41
IV.RM33.EHN. ML:2.0 0.0004515 0.12 AML other m 2019-09-28T20:57:30.91
IV.FDMO.HHE. ML:1.8 0.00025 0.74 AML other m 2019-09-28T20:57:31.06
IV.FDMO.HHN. ML:1.8 0.000284 0.3 AML other m 2019-09-28T20:57:31.25
IV.RM33.EHE. ML:2.1 0.0006360000000000001 0.16 AML other m 2019-09-28T20:57:31.27
IV.MF5.EHE. ML:2.1 0.0006414999999999999 0.46 AML other m 2019-09-28T20:57:31.47
IV.MF5.EHN. ML:1.9 0.00040249999999999997 0.46 AML other m 2019-09-28T20:57:31.48
IV.CSP1.EHN. ML:2.0 0.00043754420000000007 0.3584 AML other m 2019-09-28T20:57:31.98
IV.CSP1.EHE. ML:1.8 0.0002605 0.4 AML other m 2019-09-28T20:57:32.30
IV.CESI.HHN. ML:2.0 0.000404 0.38 AML other m 2019-09-28T20:57:33.35
IV.CESI.HHE. ML:1.8 0.00023549999999999998 1.14 AML other m 2019-09-28T20:57:33.68
IV.GIGS.HHE. ML:1.2 0.0000466 0.94 AML other m 2019-09-28T20:57:34.73
IV.GIGS.HHN. ML:1.2 0.00004385 0.08 AML other m 2019-09-28T20:57:34.74
IV.SAP2.EHN. ML:2.7 0.00193 0.74 AML other m 2019-09-28T20:57:35.72
IV.OFFI.HHE. ML:1.9 0.00027350000000000003 0.54 AML other m 2019-09-28T20:57:35.59
IV.ARRO.EHE. ML:1.5 0.00009945 0.2 AML other m 2019-09-28T20:57:35.81
IV.ARRO.EHN. ML:1.5 0.00009415000000000001 0.14 AML other m 2019-09-28T20:57:36.07
IV.OFFI.HHN. ML:2.0 0.000334 0.56 AML other m 2019-09-28T20:57:36.55
IV.SAP2.EHE. ML:1.8 0.000247 0.26 AML other m 2019-09-28T20:57:36.63
IV.MNTT.EHE. ML:2.0 0.0003105 0.34 AML other m 2019-09-28T20:57:38.73
IV.MNTT.EHN. ML:2.1 0.000372 0.3 AML other m 2019-09-28T20:57:39.21
IV.MOMA.HHE. ML:1.9 0.0002 0.76 AML other m 2019-09-28T20:57:39.49
IV.MOMA.HHN. ML:1.8 0.00014730005000000002 0.2688 AML other m 2019-09-28T20:57:39.68
IV.VCEL.EHE. ML:1.6 0.0000725 1.48 AML other m 2019-09-28T20:57:40.86
IV.FOSV.EHE. ML:1.2 0.0000321 0.34 AML other m 2019-09-28T20:57:42.16
IV.ATCC.EHN. ML:1.4 0.000045350000000000005 0.18 AML other m 2019-09-28T20:57:43.17
IV.VCEL.EHN. ML:1.7 0.00008410000000000001 0.68 AML other m 2019-09-28T20:57:44.43
IV.FOSV.EHN. ML:1.4 0.00004375 0.3 AML other m 2019-09-28T20:57:45.50
IV.T0110.HHE. ML:1.6 0.00006335000000000001 0.54 AML other m 2019-09-28T20:57:47.75
IV.ATCC.EHE. ML:1.5 0.00005574999999999999 0.46 AML other m 2019-09-28T20:57:48.74
IV.T0110.HHN. ML:1.7 0.00006975 0.66 AML other m 2019-09-28T20:57:50.29
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