Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 19-09-2019 and time 11:50:03 (Italy) in region 4 km SW Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 4 km SW Accumoli (RI), on

  • 19-09-2019 09:50:03 (UTC)
  • 19-09-2019 11:50:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6670, 13.2100 at 13 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.

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
Accumoli RI 5 667 667
Cittareale RI 7 482 1149
Amatrice RI 8 2657 3806
Arquata del Tronto AP 14 1178 4984
Montereale AQ 16 2581 7565
Norcia PG 17 4957 12522
Cascia PG 17 3217 15739
Campotosto AQ 18 542 16281
Capitignano AQ 18 665 16946
Borbona RI 18 617 17563
Posta RI 18 694 18257

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of L'Aquila (69753 inhabitants)
41 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
85 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
95 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 1.7 2019-09-19
09:50:03		 42.6673 13.2095 13 2020-02-28
16:42:23		 Bollettino Sismico Italiano INGV 76320221
Reviewed
Rev100 		ML 1.7 2019-09-19
09:50:03		 42.6748 13.2173 13 2019-09-19
09:59:14		 Sala Sismica INGV-Roma 72553151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-19 09:50:03 ± 0.09
Latitude 42.6673 ± 0.0036
Longitude 13.2095 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76320221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 121
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.48923
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 76320221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-07 15:57:37

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 72553151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-19 09:59:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2019-09-19T09:50:21.23 0.6 undecidable manual S 286 54.3012 93 0.62 42
IV.CSP1.EHZ. 2019-09-19T09:50:18.81 0.6 undecidable manual S 360 47.1195 94 0.11 47
IV.GUMA.HHZ. 2019-09-19T09:50:18.87 0.6 undecidable manual S 13 45.0216 94 0.72 41
IV.MF5.EHZ. 2019-09-19T09:50:17.94 0.6 undecidable manual S 30 40.9257 95 0.87 38
IV.GIGS.HHZ. 2019-09-19T09:50:16.11 0.6 undecidable manual S 129 38.0286 95 -0.17 48
IV.ARRO.EHZ. 2019-09-19T09:50:16.38 0.6 undecidable manual S 255 37.5291 95 0.23 47
IV.TERO.HHZ. 2019-09-19T09:50:14.47 0.6 undecidable manual S 99 32.5452 97 -0.36 46
IV.MNTT.EHZ. 2019-09-19T09:50:14.26 0.3 undecidable manual P 36 53.9016 93 0.88 55
IV.MC2.EHZ. 2019-09-19T09:50:13.39 0.6 undecidable manual S 356 27.1506 99 -0.01 49
IV.MOMA.HHZ. 2019-09-19T09:50:13.68 0.1 undecidable manual P 286 54.3012 93 0.24 91
IV.MMO1.EHZ. 2019-09-19T09:50:13.06 0.6 undecidable manual S 20 27.4503 99 -0.43 45
IV.GUMA.HHZ. 2019-09-19T09:50:12.19 0.3 undecidable manual P 13 45.0216 94 0.17 70
IV.GAVE.EHZ. 2019-09-19T09:50:12.80 0.6 undecidable manual S 276 25.8519 100 -0.26 47
IV.CSP1.EHZ. 2019-09-19T09:50:12.16 0.1 undecidable manual P 360 47.1195 94 -0.18 92
IV.CAMP.HHZ. 2019-09-19T09:50:11.92 0.6 undecidable manual S 132 21.867 104 -0.1 50
IV.MF5.EHZ. 2019-09-19T09:50:11.64 0.1 undecidable manual P 30 40.9257 95 0.25 92
IV.GIGS.HHZ. 2019-09-19T09:50:10.75 0.3 undecidable manual P 129 38.0286 95 -0.19 71
IV.RM33.EHZ. 2019-09-19T09:50:10.98 0.6 undecidable manual S 179 17.5713 111 0.06 49
IV.ARRO.EHZ. 2019-09-19T09:50:10.80 0.3 undecidable manual P 255 37.5291 95 -0.07 72
IV.LNSS.HHZ. 2019-09-19T09:50:10.30 0.6 undecidable manual S 243 15.5733 116 -0.13 49
IV.MTRA.EHZ. 2019-09-19T09:50:10.46 0.6 undecidable manual S 57 18.1707 110 -0.62 43
IV.NRCA.HHZ. 2019-09-19T09:50:10.75 0.6 undecidable manual S 337 19.9689 106 -0.79 39
IV.GAVE.EHZ. 2019-09-19T09:50:09.03 0.1 positive manual P 276 25.8519 100 -0.05 98
IV.SMA1.EHZ. 2019-09-19T09:50:09.36 0.6 undecidable manual S 112 11.0778 129 -0.05 51
IV.MMO1.EHZ. 2019-09-19T09:50:09.05 0.1 undecidable manual P 20 27.4503 99 -0.28 93
IV.MC2.EHZ. 2019-09-19T09:50:09.16 0.1 undecidable manual P 356 27.1506 99 -0.12 96
IV.TERO.HHZ. 2019-09-19T09:50:09.92 0.1 undecidable manual P 99 32.5452 97 -0.18 96
IV.RM33.EHZ. 2019-09-19T09:50:08.04 0.1 positive manual P 179 17.5713 111 0.19 96
IV.T1299.HNN. 2019-09-19T09:50:08.55 0.6 undecidable manual S 122 6.993 145 -0.12 51
IV.CAMP.HHZ. 2019-09-19T09:50:08.53 0.3 undecidable manual P 132 21.867 104 0.05 74
IV.MTRA.EHZ. 2019-09-19T09:50:07.71 0.1 undecidable manual P 57 18.1707 110 -0.23 96
IV.NRCA.HHZ. 2019-09-19T09:50:07.94 0.1 negative manual P 337 19.9689 106 -0.26 94
IV.SMA1.EHZ. 2019-09-19T09:50:07.09 0.1 positive manual P 112 11.0778 129 0.11 99
IV.LNSS.HHZ. 2019-09-19T09:50:07.67 0.1 positive manual P 243 15.5733 116 0.11 99
IV.T1299.HNN. 2019-09-19T09:50:06.66 0.1 undecidable manual P 122 6.993 145 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.9 0.000846 0.32 AML other m 2019-09-19T09:50:09.80
IV.SMA1.EHE. ML:1.9 0.000797 1.66 AML other m 2019-09-19T09:50:09.03
IV.LNSS.HHE. ML:2.0 0.0007965 0.34 AML other m 2019-09-19T09:50:10.66
IV.LNSS.HHN. ML:2.0 0.0007895 0.42 AML other m 2019-09-19T09:50:10.74
IV.RM33.EHN. ML:1.5 0.0002245 0.24 AML other m 2019-09-19T09:50:11.24
IV.NRCA.HHN. ML:1.8 0.00040149999999999995 0.92 AML other m 2019-09-19T09:50:11.61
IV.NRCA.HHE. ML:2.0 0.000778 0.12 AML other m 2019-09-19T09:50:11.22
IV.RM33.EHE. ML:1.6 0.000303 1.42 AML other m 2019-09-19T09:50:11.21
IV.CAMP.HHN. ML:1.0 0.00006555 0.98 AML other m 2019-09-19T09:50:12.28
IV.CAMP.HHE. ML:1.0 0.00006085 0.44 AML other m 2019-09-19T09:50:12.15
IV.GAVE.HNN. ML:1.7 0.0002485 0.42 AML other m 2019-09-19T09:50:13.51
IV.GAVE.EHN. ML:2.0 0.000517 0.68 AML other m 2019-09-19T09:50:13.31
IV.GAVE.EHE. ML:2.0 0.000579 0.68 AML other m 2019-09-19T09:50:13.72
IV.GAVE.HNE. ML:2.0 0.0004965 0.38 AML other m 2019-09-19T09:50:13.46
IV.TERO.HHN. ML:1.6 0.000176 0.14 AML other m 2019-09-19T09:50:15.37
IV.TERO.HHE. ML:1.5 0.00013550000000000001 0.68 AML other m 2019-09-19T09:50:15.37
IV.ARRO.EHE. ML:1.3 0.00006955 1.68 AML other m 2019-09-19T09:50:17.10
IV.ARRO.EHN. ML:1.3 0.00006995 0.96 AML other m 2019-09-19T09:50:18.79
IV.MOMA.HHN. ML:1.4 0.0000538 1.46 AML other m 2019-09-19T09:50:21.88
IV.MOMA.HHE. ML:1.5 0.00007415 0.42 AML other m 2019-09-19T09:50:22.70
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