Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 23-08-2019 and time 15:52:45 (Italy) in region 6 km N Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 6 km N Accumoli (RI), on

  • 23-08-2019 13:52:45 (UTC)
  • 23-08-2019 15:52:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7480, 13.2320 at 10 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
Accumoli RI 6 667 667
Arquata del Tronto AP 6 1178 1845
Norcia PG 12 4957 6802
Montegallo AP 14 523 7325
Amatrice RI 14 2657 9982
Acquasanta Terme AP 15 2916 12898
Cittareale RI 16 482 13380
Castelsantangelo sul Nera MC 18 281 13661
Cascia PG 18 3217 16878
Montemonaco AP 19 604 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Teramo (54892 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Foligno (57155 inhabitants)
52 Km E of Terni (111501 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
100 Km S of Ancona (100861 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 2019-08-23
13:52:45		 42.7482 13.2318 11 2019-11-13
14:31:04		 Bollettino Sismico Italiano INGV 73015951
Reviewed
Rev100 		ML 1.7 2019-08-23
13:52:45		 42.7492 13.2313 11 2019-08-23
13:58:57		 Sala Sismica INGV-Roma 71745221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-23 13:52:45 ± 0.06
Latitude 42.7482 ± 0.0036
Longitude 13.2318 ± 0.0049
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 73015951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 411
Semi-minor axis of confidence ellipse (meter) 227
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
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) 48
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 33
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.61514
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 71745221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-23 13:58:57

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 41
Type of magnitude ML
Reference to an origin 73015951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-03 08:43:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIDA.HHZ. 2019-08-23T13:53:26.60 3.0 undecidable manual S -0.69 0
IV.ARVD.HHZ. 2019-08-23T13:53:12.88 3.0 undecidable manual S -0.19 0
IV.FIAM.HHZ. 2019-08-23T13:53:02.88 3.0 undecidable manual S -0.44 0
IV.ARRO.EHZ. 2019-08-23T13:53:00.35 0.6 undecidable manual S 244 42.4242 50 0.85 38
IV.MF5.EHZ. 2019-08-23T13:52:57.64 0.6 undecidable manual S 35 32.4453 50 0.81 39
IV.CSP1.EHZ. 2019-08-23T13:52:57.81 0.6 undecidable manual S 357 38.1285 50 -0.56 43
IV.ATCC.EHZ. 2019-08-23T13:52:57.28 0.1 undecidable manual P 315 68.2761 50 -0.32 86
IV.EL6.EHZ. 2019-08-23T13:52:57.08 0.1 undecidable manual P 351 65.2902 50 -0.07 91
IV.TERO.HHZ. 2019-08-23T13:52:56.71 0.6 undecidable manual S 115 33.3444 50 -0.38 45
IV.ASSB.HHZ. 2019-08-23T13:52:56.12 0.1 undecidable manual P 305 56.8986 50 0.27 89
IV.FDMO.HHZ. 2019-08-23T13:52:56.88 0.6 undecidable manual S 340 34.0437 50 -0.4 45
IV.CAMP.HHZ. 2019-08-23T13:52:55.28 0.6 undecidable manual S 148 27.6501 50 -0.28 47
IV.RM33.EHZ. 2019-08-23T13:52:55.19 0.6 undecidable manual S 183 26.5512 50 -0.09 49
IV.GAVE.EHZ. 2019-08-23T13:52:55.68 0.6 undecidable manual S 257 28.2495 50 -0.03 49
IV.OFFI.HHZ. 2019-08-23T13:52:54.31 0.1 undecidable manual P 61 42.3243 50 0.7 81
IV.MNTT.EHZ. 2019-08-23T13:52:54.53 0.1 undecidable manual P 40 45.621 50 0.41 88
IV.LNSS.HHZ. 2019-08-23T13:52:54.12 0.6 undecidable manual S 224 22.4553 50 -0.05 50
IV.GIGS.HHZ. 2019-08-23T13:52:53.41 0.1 undecidable manual P 139 42.9237 50 -0.3 91
IV.ARRO.EHZ. 2019-08-23T13:52:53.86 0.1 undecidable manual P 244 42.4242 50 0.24 92
IV.FDMO.HHZ. 2019-08-23T13:52:52.06 0.1 undecidable manual P 340 34.0437 50 -0.28 93
IV.TERO.HHZ. 2019-08-23T13:52:52.16 0.1 undecidable manual P 115 33.3444 50 -0.07 97
IV.MC2.EHZ. 2019-08-23T13:52:52.84 0.3 undecidable manual S 349 18.4704 120 -0.1 74
IV.MF5.EHZ. 2019-08-23T13:52:52.26 0.1 undecidable manual P 35 32.4453 50 0.18 95
IV.CSP1.EHZ. 2019-08-23T13:52:52.75 0.1 undecidable manual P 357 38.1285 50 -0.22 93
IV.NRCA.HNZ. 2019-08-23T13:52:51.41 0.3 undecidable manual S 315 13.4754 128 -0.09 75
IV.FEMA.HNZ. 2019-08-23T13:52:51.21 0.1 undecidable manual P 328 27.9498 50 -0.18 96
IV.SMA1.EHZ. 2019-08-23T13:52:51.96 0.3 undecidable manual S 147 15.5733 124 -0.13 74
IV.CAMP.HHZ. 2019-08-23T13:52:51.14 0.1 undecidable manual P 148 27.6501 50 -0.2 95
IV.RM33.EHZ. 2019-08-23T13:52:51.26 0.1 undecidable manual P 183 26.5512 50 0.08 98
IV.MTRA.HNZ. 2019-08-23T13:52:51.33 0.3 undecidable manual S 86 13.4754 128 -0.17 74
IV.GAVE.EHZ. 2019-08-23T13:52:51.41 0.1 undecidable manual P 257 28.2495 50 -0.02 99
IV.LNSS.HHZ. 2019-08-23T13:52:50.58 0.1 undecidable manual P 224 22.4553 50 0.03 100
IV.MTRA.HNZ. 2019-08-23T13:52:49.09 0.1 undecidable manual P 86 13.4754 128 0.09 100
IV.NRCA.HNZ. 2019-08-23T13:52:49.11 0.1 undecidable manual P 315 13.4754 128 0.11 100
IV.SMA1.EHZ. 2019-08-23T13:52:49.51 0.1 undecidable manual P 147 15.5733 124 0.17 98
IV.MC2.EHZ. 2019-08-23T13:52:49.89 0.1 undecidable manual P 349 18.4704 120 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.4 0.002835 0.68 AML other m 2019-08-23T13:52:51.46
IV.MTRA.HNE. ML:2.0 0.000975 0.36 AML other m 2019-08-23T13:52:51.69
IV.MTRA.EHE. ML:2.0 0.000975 0.34 AML other m 2019-08-23T13:52:51.69
IV.MTRA.HNN. ML:2.0 0.0009524999999999999 0.32 AML other m 2019-08-23T13:52:51.96
IV.MTRA.EHN. ML:2.0 0.0009705 0.32 AML other m 2019-08-23T13:52:51.97
IV.NRCA.HNN. ML:2.4 0.0028399999999999996 0.74 AML other m 2019-08-23T13:52:51.54
IV.NRCA.HHN. ML:2.4 0.00294 0.74 AML other m 2019-08-23T13:52:51.92
IV.SMA1.EHN. ML:1.6 0.00034399999999999996 0.18 AML other m 2019-08-23T13:52:52.28
IV.CAMP.HHE. ML:1.2 0.0000838 0.18 AML other m 2019-08-23T13:52:55.48
IV.RM33.HNN. ML:1.9 0.00042449999999999996 0.28 AML other m 2019-08-23T13:52:55.58
IV.RM33.EHN. ML:1.8 0.00038500000000000003 0.26 AML other m 2019-08-23T13:52:55.59
IV.CAMP.HHN. ML:1.5 0.00015900000000000002 0.24 AML other m 2019-08-23T13:52:55.61
IV.RM33.HNE. ML:1.9 0.00040149999999999995 1.12 AML other m 2019-08-23T13:52:56.59
IV.RM33.EHE. ML:1.9 0.000415 0.6 AML other m 2019-08-23T13:52:56.29
IV.FDMO.HHN. ML:1.5 0.000127 1.48 AML other m 2019-08-23T13:52:57.07
IV.MF5.EHN. ML:1.6 0.000164 0.4 AML other m 2019-08-23T13:52:58.15
IV.ATCC.EHE. ML:0.0 0.000040512665 0.1984 AML other m 2019-08-23T13:53:08.60
IV.ATCC.EHN. ML:0.0 0.000041819865 0.704 AML other m 2019-08-23T13:53:12.37
IV.NRCA.HHE. ML:2.4 0.0023710339999999997 0.1216 AML other m 2019-08-23T13:52:51.80
IV.SMA1.EHE. ML:1.4 0.0002564988 0.1152 AML other m 2019-08-23T13:52:52.43
IV.LNSS.HNE. ML:1.6 0.00024295647 0.1408 AML other m 2019-08-23T13:52:55.26
IV.LNSS.HHE. ML:1.6 0.0002555248 0.16 AML other m 2019-08-23T13:52:55.26
IV.LNSS.HNN. ML:1.9 0.00048625045 0.1792 AML other m 2019-08-23T13:52:54.53
IV.LNSS.HHN. ML:1.9 0.0005117704 0.1792 AML other m 2019-08-23T13:52:54.62
IV.GAVE.EHE. ML:1.7 0.0002415577 0.3008 AML other m 2019-08-23T13:52:58.47
IV.GAVE.EHN. ML:1.7 0.00023933795000000003 0.2624 AML other m 2019-08-23T13:52:56.35
IV.FDMO.HHE. ML:1.5 0.00011950140000000001 0.1024 AML other m 2019-08-23T13:52:58.70
IV.TERO.HHE. ML:1.5 0.000124889 0.2176 AML other m 2019-08-23T13:52:56.98
IV.TERO.HHN. ML:1.4 0.00011727123 0.096 AML other m 2019-08-23T13:52:57.44
IV.MF5.EHE. ML:1.6 0.00018180905 0.1984 AML other m 2019-08-23T13:52:57.91
IV.CSP1.EHE. ML:1.6 0.00013388336 0.1216 AML other m 2019-08-23T13:52:59.44
IV.CSP1.EHN. ML:1.6 0.000144257195 0.2816 AML other m 2019-08-23T13:52:58.48
IV.GIGS.HHN. ML:0.7 0.00001669395 0.16 AML other m 2019-08-23T13:52:59.88
IV.GIGS.HHE. ML:0.8 0.000020322691 0.16 AML other m 2019-08-23T13:52:59.94
IV.ARRO.EHE. ML:1.3 0.00005989898 0.1984 AML other m 2019-08-23T13:53:01.79
IV.ARRO.EHN. ML:1.2 0.000050757495 0.16 AML other m 2019-08-23T13:53:02.01
IV.MNTT.EHN. ML:2.0 0.00032370855 0.1408 AML other m 2019-08-23T13:53:03.83
IV.ASSB.HHE. ML:1.6 0.0000775158 0.1216 AML other m 2019-08-23T13:53:05.08
IV.ASSB.HHN. ML:1.4 0.00006220117 0.1792 AML other m 2019-08-23T13:53:06.04
IV.EL6.EHN. ML:1.6 0.000074644765 0.1792 AML other m 2019-08-23T13:53:09.22
IV.EL6.EHE. ML:1.6 0.00006938037 0.2624 AML other m 2019-08-23T13:53:08.87
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