Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 27-09-2019 and time 02:15:11 (Italy) in region 4 km W Arquata del Tronto (AP)

A magnitude ML 1.4 earthquake occured in region: 4 km W Arquata del Tronto (AP), on

  • 27-09-2019 00:15:11 (UTC)
  • 27-09-2019 02:15:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7710, 13.2520 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 8 667 1845
Montegallo AP 11 523 2368
Acquasanta Terme AP 13 2916 5284
Norcia PG 13 4957 10241
Montemonaco AP 16 604 10845
Amatrice RI 16 2657 13502
Castelsantangelo sul Nera MC 16 281 13783
Cittareale RI 19 482 14265

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
48 Km N of L'Aquila (69753 inhabitants)
49 Km E of Foligno (57155 inhabitants)
55 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
80 Km E of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
88 Km NW of Chieti (51815 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 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
Reviewed
Rev100 		ML 1.4 2019-09-27
00:15:11		 42.771 13.2517 10 2019-09-27
00:21:01		 Sala Sismica INGV-Roma 72807011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-27 00:15:11 ± 0.05
Latitude 42.7710 ± 0.0027
Longitude 13.2517 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72807011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 413
Semi-minor axis of confidence ellipse (meter) 268
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 37
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60974
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 72807011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-27 00:21:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-09-27T00:15:31.27 1.0 undecidable manual S -0.25 0.41
IV.LPEL.HHZ. 2019-09-27T00:15:29.58 3.0 undecidable manual P -0.28 0
IV.ATCC.EHZ. 2019-09-27T00:15:23.17 1.0 negative manual P 313 67.6767 50 0.22 22
IV.MF5.EHZ. 2019-09-27T00:15:22.04 0.6 undecidable manual S 35 29.4483 50 0.57 43
IV.TERO.HHZ. 2019-09-27T00:15:22.25 0.6 undecidable manual S 120 33.1446 50 -0.21 47
IV.RM33.EHZ. 2019-09-27T00:15:21.55 0.6 undecidable manual S 186 29.2485 50 0.12 48
IV.MOMA.HHZ. 2019-09-27T00:15:21.16 0.6 negative manual P 274 55.5999 50 0.06 46
IV.FDMO.HHZ. 2019-09-27T00:15:21.74 0.6 undecidable manual S 336 32.3454 50 -0.52 44
IV.LNSS.HHZ. 2019-09-27T00:15:20.67 0.6 undecidable manual S 223 25.3524 50 0.27 47
IV.ARRO.EHZ. 2019-09-27T00:15:19.54 0.6 undecidable manual P 242 45.0216 50 0.08 47
IV.OFFI.HHZ. 2019-09-27T00:15:19.18 0.6 positive manual P 63 39.7269 50 0.53 43
IV.MNTT.EHZ. 2019-09-27T00:15:19.65 0.3 positive manual P 41 42.7239 50 0.54 63
IV.GIGS.HHZ. 2019-09-27T00:15:19.11 0.6 positive manual P 143 43.9227 50 -0.19 46
IV.FDMO.HHZ. 2019-09-27T00:15:17.13 0.1 negative manual P 336 32.3454 50 -0.38 90
IV.MMO1.EHZ. 2019-09-27T00:15:17.31 0.6 undecidable manual S 23 15.4734 124 -0.19 48
IV.CSP1.EHZ. 2019-09-27T00:15:17.72 0.6 negative manual P 354 35.8419 50 -0.32 45
IV.TERO.HHZ. 2019-09-27T00:15:17.31 0.1 undecidable manual P 120 33.1446 50 -0.32 91
IV.MC2.EHZ. 2019-09-27T00:15:17.89 0.6 undecidable manual S 342 16.3725 122 0.13 49
IV.RM33.EHZ. 2019-09-27T00:15:17.00 0.3 positive manual P 186 29.2485 50 -0.03 73
IV.GUMA.HHZ. 2019-09-27T00:15:17.65 0.6 undecidable manual P 12 33.0447 50 0.03 48
IV.SMA1.EHZ. 2019-09-27T00:15:17.88 0.6 undecidable manual S 156 16.9719 121 -0.06 49
IV.MF5.EHZ. 2019-09-27T00:15:17.13 0.6 positive manual P 35 29.4483 50 0.07 48
IV.LNSS.HHZ. 2019-09-27T00:15:16.38 0.1 undecidable manual P 223 25.3524 50 -0.06 97
IV.MTRA.EHZ. 2019-09-27T00:15:16.23 0.6 undecidable manual S 98 11.877 131 -0.28 48
IV.NRCA.HNZ. 2019-09-27T00:15:16.91 0.6 undecidable manual S 302 13.1757 128 0.06 50
IV.SMA1.EHZ. 2019-09-27T00:15:15.12 0.1 undecidable manual P 156 16.9719 121 0.1 98
IV.MTRA.EHZ. 2019-09-27T00:15:14.33 0.1 undecidable manual P 98 11.877 131 0.14 98
IV.NRCA.HNZ. 2019-09-27T00:15:14.52 0.3 undecidable manual P 302 13.1757 128 0.14 73
IV.MMO1.EHZ. 2019-09-27T00:15:14.69 0.1 undecidable manual P 23 15.4734 124 -0.07 99
IV.MC2.EHZ. 2019-09-27T00:15:14.91 0.1 undecidable manual P 342 16.3725 122 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.7 0.00061 0.42 AML other m 2019-09-27T00:15:16.73
IV.MTRA.HNE. ML:1.7 0.000607 0.42 AML other m 2019-09-27T00:15:16.73
IV.MTRA.HNN. ML:1.6 0.00045599999999999997 0.38 AML other m 2019-09-27T00:15:17.19
IV.MTRA.EHN. ML:1.6 0.0004965 0.38 AML other m 2019-09-27T00:15:17.19
IV.NRCA.HNN. ML:2.0 0.0009750000000000001 0.18 AML other m 2019-09-27T00:15:17.04
IV.NRCA.HHN. ML:2.0 0.0011099999999999999 0.18 AML other m 2019-09-27T00:15:17.13
IV.NRCA.HHE. ML:2.2 0.001595 0.34 AML other m 2019-09-27T00:15:17.09
IV.NRCA.HNE. ML:2.1 0.00149 0.34 AML other m 2019-09-27T00:15:17.09
IV.SMA1.EHE. ML:1.0 0.00009054999999999999 0.32 AML other m 2019-09-27T00:15:18.43
IV.SMA1.EHN. ML:1.0 0.00009090000000000001 1.12 AML other m 2019-09-27T00:15:18.36
IV.LNSS.HHE. ML:1.6 0.0002105 0.6 AML other m 2019-09-27T00:15:21.40
IV.LNSS.HHN. ML:1.6 0.00021300000000000003 0.84 AML other m 2019-09-27T00:15:21.45
IV.RM33.EHN. ML:1.4 0.0001095 1.88 AML other m 2019-09-27T00:15:22.95
IV.FDMO.HHE. ML:1.2 0.00007105 0.72 AML other m 2019-09-27T00:15:22.12
IV.FDMO.HHN. ML:1.2 0.00007664999999999999 0.3 AML other m 2019-09-27T00:15:22.30
IV.RM33.EHE. ML:1.5 0.00016649999999999998 0.16 AML other m 2019-09-27T00:15:22.31
IV.TERO.HHN. ML:1.3 0.0000811 1.04 AML other m 2019-09-27T00:15:22.41
IV.GUMA.HHE. ML:1.9 0.000343 0.26 AML other m 2019-09-27T00:15:23.18
IV.GUMA.HHN. ML:2.1 0.000493 0.28 AML other m 2019-09-27T00:15:23.21
IV.CSP1.EHN. ML:1.5 0.0001275 0.36 AML other m 2019-09-27T00:15:23.22
IV.CSP1.EHE. ML:1.3 0.00007324999999999999 0.38 AML other m 2019-09-27T00:15:23.35
IV.TERO.HHE. ML:1.2 0.0000576 0.52 AML other m 2019-09-27T00:15:23.39
IV.GIGS.HHN. ML:0.5 0.000011025 0.08 AML other m 2019-09-27T00:15:25.78
IV.GIGS.HHE. ML:0.7 0.0000167 0.52 AML other m 2019-09-27T00:15:26.36
IV.ARRO.EHE. ML:0.9 0.00002615 0.18 AML other m 2019-09-27T00:15:26.76
IV.ARRO.EHN. ML:0.9 0.0000248 0.14 AML other m 2019-09-27T00:15:27.19
IV.OFFI.HHE. ML:1.3 0.0000736 0.3 AML other m 2019-09-27T00:15:27.63
IV.OFFI.HHN. ML:1.5 0.000117 0.7 AML other m 2019-09-27T00:15:28.53
IV.MOMA.HHE. ML:1.3 0.0000479 0.76 AML other m 2019-09-27T00:15:30.92
IV.MOMA.HHN. ML:1.2 0.00004025 1.08 AML other m 2019-09-27T00:15:30.73
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