Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 07-08-2019 and time 10:07:49 (Italy) in region 4 km SW Arquata del Tronto (AP)

A magnitude ML 1.8 earthquake occured in region: 4 km SW Arquata del Tronto (AP), on

  • 07-08-2019 08:07:49 (UTC)
  • 07-08-2019 10:07:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7480, 13.2630 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 6 667 1845
Montegallo AP 12 523 2368
Acquasanta Terme AP 12 2916 5284
Amatrice RI 13 2657 7941
Norcia PG 15 4957 12898
Cittareale RI 17 482 13380
Montemonaco AP 18 604 13984
Castelsantangelo sul Nera MC 19 281 14265
Valle Castellana TE 19 977 15242

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
45 Km N of L'Aquila (69753 inhabitants)
51 Km E of Foligno (57155 inhabitants)
54 Km E of Terni (111501 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
82 Km E of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km NW of Chieti (51815 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
99 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 1.8 2019-08-07
08:07:49		 42.748 13.2627 11 2019-11-13
14:31:07		 Bollettino Sismico Italiano INGV 73370141
Reviewed
Rev100 		ML 2.0 2019-08-07
08:07:49		 42.75 13.2623 11 2019-08-07
08:19:08		 Sala Sismica INGV-Roma 71241491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-07 08:07:49 ± 0.03
Latitude 42.7480 ± 0.0018
Longitude 13.2627 ± 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 73370141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 137
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37232
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 73370141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-21 09:05:39

ML:2.0

Field Value
Value 2.0
Uncertainty 0.5
Num. used stations 30
Type of magnitude ML
Reference to an origin 71241491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-07 08:19:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.TUE.HHZ. 2019-08-07T08:10:18.57 3.0 undecidable manual Sg 24.48 0
MN.CLTB.HHZ. 2019-08-07T08:10:04.68 3.0 undecidable manual Sn -2.35 0
SI.MOSI.HHZ. 2019-08-07T08:10:01.71 3.0 undecidable manual Sg 15.68 0
IV.DGI.HHZ. 2019-08-07T08:09:43.35 3.0 undecidable manual Sg 13.32 0
GU.RNCA.HHZ. 2019-08-07T08:09:40.41 3.0 undecidable manual Sg 12.8 0
IV.ZONE.HHZ. 2019-08-07T08:09:35.91 3.0 undecidable manual Sn 3.53 0
IV.NDIM.HNZ. 2019-08-07T08:09:17.05 3.0 undecidable manual Sg 9.81 0
CH.BERNI.HHZ. 2019-08-07T08:09:09.49 3.0 negative manual Pg 14.19 0
GU.GSCL.HHZ. 2019-08-07T08:09:07.21 3.0 undecidable manual Sg 5.38 0
IV.MILN.HNZ. 2019-08-07T08:08:58.58 3.0 undecidable manual Pg 8.09 0
IV.VENT.EHZ. 2019-08-07T08:08:52.36 3.0 undecidable manual Sg 3.7 0
IV.VBKN.HHZ. 2019-08-07T08:08:48.56 3.0 undecidable manual Sn -3.93 0
IV.EUCT.HNZ. 2019-08-07T08:08:48.79 3.0 undecidable manual Pn 0.03 0
IV.SARZ.HNZ. 2019-08-07T08:08:47.19 3.0 undecidable manual Pn -0.67 0
IV.RNI2.HHZ. 2019-08-07T08:08:28.74 3.0 undecidable manual S -2.53 0
IV.TOLF.HHZ. 2019-08-07T08:08:26.91 3.0 undecidable manual S -1.85 0
IV.PIEI.HHZ. 2019-08-07T08:08:23.24 3.0 undecidable manual S 0.44 0
IT.VNF1.HGZ. 2019-08-07T08:08:17.57 3.0 positive manual P 2.22 0
IV.MCIV.CHZ. 2019-08-07T08:08:10.71 3.0 positive manual P -1.1 0
IV.GIUL.HHZ. 2019-08-07T08:08:10.31 3.0 undecidable manual P -2.11 0
IV.CESI.HHZ. 2019-08-07T08:08:03.46 0.3 undecidable manual S 315 40.7259 50 0.14 70
IV.GIGS.HHZ. 2019-08-07T08:08:03.18 0.6 undecidable manual S 142 41.3253 50 -0.31 45
IV.CSP1.EHZ. 2019-08-07T08:08:02.80 0.3 undecidable manual S 353 38.4282 50 0.1 71
IV.MF5.EHZ. 2019-08-07T08:08:01.52 0.6 undecidable manual S 31 31.0467 50 0.79 39
IV.FDMO.HHZ. 2019-08-07T08:08:01.62 0.3 undecidable manual S 336 35.0427 50 -0.17 70
IV.FEMA.HNZ. 2019-08-07T08:08:00.17 0.3 undecidable manual S 324 29.3484 50 -0.12 72
IV.TERO.HHZ. 2019-08-07T08:08:00.53 0.6 undecidable manual S 116 31.1466 50 -0.22 47
IV.GAVE.EHZ. 2019-08-07T08:08:00.62 0.3 undecidable manual S 258 30.6471 50 -0.01 73
IV.RM33.EHZ. 2019-08-07T08:07:59.86 0.3 undecidable manual S 188 26.8509 50 0.26 70
IV.CAMP.HHZ. 2019-08-07T08:07:59.31 0.3 undecidable manual S 153 26.3514 50 -0.18 71
IV.LNSS.HHZ. 2019-08-07T08:07:58.89 0.3 undecidable manual S 228 24.2535 50 -0.03 74
IV.CSP1.EHZ. 2019-08-07T08:07:57.19 0.1 undecidable manual P 353 38.4282 50 -0.09 95
IV.GIGS.HHZ. 2019-08-07T08:07:57.62 0.1 undecidable manual P 142 41.3253 50 -0.12 94
IV.MC2.EHZ. 2019-08-07T08:07:57.44 0.3 undecidable manual S 342 19.0698 119 -0.01 75
IV.CESI.HHZ. 2019-08-07T08:07:57.60 0.1 undecidable manual P 315 40.7259 50 -0.04 96
IV.TERO.HHZ. 2019-08-07T08:07:56.06 0.1 undecidable manual P 116 31.1466 50 -0.09 96
IV.MMO1.EHZ. 2019-08-07T08:07:56.85 0.1 undecidable manual S 17 17.5713 121 -0.14 97
IV.GAVE.EHZ. 2019-08-07T08:07:56.13 0.3 undecidable manual P 258 30.6471 50 0.05 73
IV.MF5.EHZ. 2019-08-07T08:07:56.44 0.3 undecidable manual P 31 31.0467 50 0.3 69
IV.SMA1.EHZ. 2019-08-07T08:07:56.03 0.3 undecidable manual S 156 14.2746 126 -0.02 75
IV.FDMO.HHZ. 2019-08-07T08:07:56.56 0.1 undecidable manual P 336 35.0427 50 -0.2 93
IV.NRCA.HNZ. 2019-08-07T08:07:56.20 0.1 undecidable manual S 308 15.3735 125 -0.15 98
IV.LNSS.HHZ. 2019-08-07T08:07:55.16 0.1 undecidable manual P 228 24.2535 50 0.06 98
IV.CAMP.HHZ. 2019-08-07T08:07:55.37 0.3 undecidable manual P 153 26.3514 50 -0.06 73
IV.MTRA.EHZ. 2019-08-07T08:07:55.09 0.1 undecidable manual S 85 10.9779 134 -0.07 100
IV.RM33.EHZ. 2019-08-07T08:07:55.64 0.3 undecidable manual P 188 26.8509 50 0.15 72
IV.FEMA.HNZ. 2019-08-07T08:07:55.80 0.3 undecidable manual P 324 29.3484 50 -0.09 72
IV.MMO1.EHZ. 2019-08-07T08:07:54.02 0.1 undecidable manual P 17 17.5713 121 0.04 100
IV.MC2.EHZ. 2019-08-07T08:07:54.32 0.1 undecidable manual P 342 19.0698 119 0.07 98
IV.SMA1.EHZ. 2019-08-07T08:07:53.65 0.1 undecidable manual P 156 14.2746 126 0.21 97
IV.NRCA.HNZ. 2019-08-07T08:07:53.71 0.1 undecidable manual P 308 15.3735 125 0.1 99
IV.MTRA.EHZ. 2019-08-07T08:07:53.04 0.1 undecidable manual P 85 10.9779 134 0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:1.6 0.0005425 0.44 AML other m 2019-08-07T08:07:55.34
IV.MTRA.EHN. ML:1.6 0.000491 0.42 AML other m 2019-08-07T08:07:55.35
IV.MTRA.HNE. ML:1.8 0.000812 1.12 AML other m 2019-08-07T08:07:55.88
IV.MTRA.EHE. ML:1.8 0.000783 1.12 AML other m 2019-08-07T08:07:55.88
IV.SMA1.EHN. ML:1.7 0.0005434999999999999 0.22 AML other m 2019-08-07T08:07:56.22
IV.NRCA.HHN. ML:2.2 0.00149 0.14 AML other m 2019-08-07T08:07:56.35
IV.SMA1.EHE. ML:1.7 0.00045650000000000004 0.2 AML other m 2019-08-07T08:07:56.36
IV.NRCA.HNN. ML:2.1 0.00122 0.14 AML other m 2019-08-07T08:07:56.29
IV.NRCA.HHE. ML:2.3 0.0020350000000000004 0.12 AML other m 2019-08-07T08:07:56.33
IV.NRCA.HNE. ML:2.3 0.001925 0.12 AML other m 2019-08-07T08:07:57.34
IV.LNSS.HHE. ML:1.8 0.000374 0.68 AML other m 2019-08-07T08:07:59.08
IV.LNSS.HHN. ML:1.7 0.00032900000000000003 1.18 AML other m 2019-08-07T08:07:59.91
IV.RM33.EHE. ML:1.3 0.00010095 0.64 AML other m 2019-08-07T08:08:00.37
IV.RM33.EHN. ML:1.2 0.0000923 0.46 AML other m 2019-08-07T08:08:00.46
IV.TERO.HHN. ML:1.7 0.0002445 0.4 AML other m 2019-08-07T08:08:00.69
IV.GAVE.EHN. ML:1.9 0.00034950000000000004 1.22 AML other m 2019-08-07T08:08:01.81
IV.TERO.HHE. ML:1.8 0.000288 0.14 AML other m 2019-08-07T08:08:01.40
IV.GAVE.EHE. ML:1.8 0.00027049999999999996 0.6 AML other m 2019-08-07T08:08:01.34
IV.FDMO.HHN. ML:1.3 0.00007565 0.6 AML other m 2019-08-07T08:08:02.24
IV.CESI.HHE. ML:1.9 0.0002465 0.18 AML other m 2019-08-07T08:08:03.64
IV.CESI.HHN. ML:1.9 0.0002525 0.18 AML other m 2019-08-07T08:08:03.66
IV.GIGS.HHN. ML:1.0 0.000034149999999999997 0.62 AML other m 2019-08-07T08:08:04.38
IV.GIGS.HHE. ML:1.0 0.00003235000000000001 0.6 AML other m 2019-08-07T08:08:04.26
IV.FDMO.HHE. ML:1.2 0.0000711 1.1 AML other m 2019-08-07T08:08:06.02
IV.EL6.EHE. ML:2.0 0.00016705 0.74 AML other m 2019-08-07T08:08:15.56
IV.EL6.EHN. ML:1.8 0.00012395 1.34 AML other m 2019-08-07T08:08:16.67
IV.CSP1.EHE. ML:2.0 0.00035949999999999996 0.42 AML other m 2019-08-07T08:08:16.50
IV.CSP1.EHN. ML:2.0 0.000328 0.42 AML other m 2019-08-07T08:08:16.29
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