Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 21-11-2019 and time 18:00:46 (UTC) in region 1 km SE Arquata del Tronto (AP)

A magnitude ML 0.7 earthquake occured in region: 1 km SE Arquata del Tronto (AP), on

  • 21-11-2019 18:00:46 (UTC)
  • 21-11-2019 19:00:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7640, 13.3070 at 14 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 1 1178 1178
Acquasanta Terme AP 9 2916 4094
Accumoli RI 9 667 4761
Montegallo AP 9 523 5284
Amatrice RI 15 2657 7941
Montemonaco AP 15 604 8545
Valle Castellana TE 16 977 9522
Roccafluvione AP 18 2010 11532
Norcia PG 18 4957 16489
Castelsantangelo sul Nera MC 19 281 16770
Palmiano AP 20 196 16966
Rocca Santa Maria TE 20 537 17503

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
54 Km E of Foligno (57155 inhabitants)
58 Km E of Terni (111501 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
84 Km E of Perugia (166134 inhabitants)
84 Km NW of Chieti (51815 inhabitants)
97 Km S of Ancona (100861 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
98 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 0.7 2019-11-21
18:00:46		 42.7638 13.3067 14 2020-02-28
16:42:17		 Bollettino Sismico Italiano INGV 75225271
Reviewed
Rev100 		ML 0.7 2019-11-21
18:00:46		 42.7653 13.3147 15 2019-11-21
18:06:51		 Sala Sismica INGV-Roma 73951851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-21 18:00:46 ± 0.07
Latitude 42.7638 ± 0.0027
Longitude 13.3067 ± 0.0061
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75225271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 0.33635
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 73951851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-21 18:06:51

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 75225271
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-03 12:28:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2019-11-21T18:00:59.48 0.6 undecidable manual S 347 37.3293 98 0.15 47
IV.FDMO.HHZ. 2019-11-21T18:00:58.66 0.6 undecidable manual S 330 35.1426 99 -0.09 47
IV.RM33.EHZ. 2019-11-21T18:00:57.42 0.3 undecidable manual S 195 29.2485 101 0.21 69
IV.MF5.EHZ. 2019-11-21T18:00:57.64 0.6 undecidable manual S 27 27.75 102 0.82 39
IV.CAMP.HHZ. 2019-11-21T18:00:56.42 0.6 undecidable manual S 162 26.6511 103 -0.11 48
IV.LNSS.HNE. 2019-11-21T18:00:56.93 0.1 undecidable manual S 231 28.1496 102 0.01 96
IV.TERO.HHZ. 2019-11-21T18:00:56.97 0.6 undecidable manual S 123 28.8489 102 -0.14 47
IV.MC2.EHZ. 2019-11-21T18:00:54.70 0.3 undecidable manual S 330 18.9699 113 0.12 72
IV.CSP1.EHZ. 2019-11-21T18:00:53.94 0.1 undecidable manual P 347 37.3293 98 -0.12 93
IV.MMO1.EHZ. 2019-11-21T18:00:53.44 0.1 undecidable manual S 6 15.0738 121 -0.22 95
IV.T1299.EHE. 2019-11-21T18:00:53.73 0.3 undecidable manual S 188 14.5743 123 0.2 71
IV.NRCA.HHZ. 2019-11-21T18:00:53.81 0.3 undecidable manual S 296 17.4714 116 -0.41 69
IV.FDMO.HHZ. 2019-11-21T18:00:53.50 0.1 undecidable manual P 330 35.1426 99 -0.22 92
IV.SMA1.EHN. 2019-11-21T18:00:53.38 0.6 undecidable manual S 171 14.9739 122 -0.25 48
IV.TERO.HHZ. 2019-11-21T18:00:52.67 0.1 undecidable manual P 123 28.8489 102 -0.1 95
IV.MF5.EHZ. 2019-11-21T18:00:52.97 0.1 undecidable manual P 27 27.75 102 0.36 91
IV.CAMP.HHZ. 2019-11-21T18:00:52.46 0.3 undecidable manual P 162 26.6511 103 0.02 73
IV.RM33.EHZ. 2019-11-21T18:00:52.86 0.1 undecidable manual P 195 29.2485 101 0.02 96
IV.MTRA.EHZ. 2019-11-21T18:00:52.06 0.1 undecidable manual S 96 7.3815 147 -0.1 99
IV.LNSS.HNE. 2019-11-21T18:00:52.53 0.1 undecidable manual P 231 28.1496 102 -0.13 95
IV.MC2.EHZ. 2019-11-21T18:00:51.35 0.1 undecidable manual P 330 18.9699 113 0.04 98
IV.NRCA.HHZ. 2019-11-21T18:00:50.98 0.1 undecidable manual P 296 17.4714 116 -0.12 97
IV.SMA1.EHN. 2019-11-21T18:00:50.90 0.3 undecidable manual P 171 14.9739 122 0.13 72
IV.MMO1.EHZ. 2019-11-21T18:00:50.76 0.1 undecidable manual P 6 15.0738 121 -0.02 99
IV.T1299.EHE. 2019-11-21T18:00:50.89 0.1 undecidable manual P 188 14.5743 123 0.18 96
IV.MTRA.EHZ. 2019-11-21T18:00:49.96 0.1 undecidable manual P 96 7.3815 147 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:0.6 0.00003960976 0.1664 AML other m 2019-11-21T18:00:52.15
IV.MTRA.EHE. ML:0.6 0.000040347845 0.1408 AML other m 2019-11-21T18:00:52.36
IV.MTRA.EHN. ML:0.5 0.000033013425 0.2432 AML other m 2019-11-21T18:00:53.38
IV.NRCA.HNE. ML:0.7 0.000039962595 1.8592 AML other m 2019-11-21T18:00:54.93
IV.NRCA.HNN. ML:0.8 0.000047437195 1.8464 AML other m 2019-11-21T18:00:54.05
IV.MTRA.HNE. ML:0.9 0.00008113271999999999 1.5648 AML other m 2019-11-21T18:00:54.88
IV.NRCA.HHN. ML:0.9 0.00005984473 0.1408 AML other m 2019-11-21T18:00:54.30
IV.NRCA.HHE. ML:1.0 0.000070479505 0.1408 AML other m 2019-11-21T18:00:54.48
IV.RM33.EHN. ML:0.5 0.0000164210595 0.5248 AML other m 2019-11-21T18:00:57.62
IV.RM33.EHE. ML:0.0 0.0000049096415 0.1408 AML other m 2019-11-21T18:00:57.52
IV.RM33.HNE. ML:0.6 0.0000221064215 0.7552 AML other m 2019-11-21T18:00:57.43
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