Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 10-07-2020 and time 01:55:21 (Italy) in region 9 km NW Arquata del Tronto (AP)

A magnitude ML 1.2 earthquake occured in region: 9 km NW Arquata del Tronto (AP), on

  • 09-07-2020 23:55:21 (UTC)
  • 10-07-2020 01:55:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8230, 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.

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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 9 1178 1178
Castelsantangelo sul Nera MC 9 281 1459
Norcia PG 10 4957 6416
Montegallo AP 10 523 6939
Montemonaco AP 13 604 7543
Accumoli RI 15 667 8210
Ussita MC 15 444 8654
Preci PG 15 724 9378
Visso MC 16 1107 10485
Montefortino FM 17 1178 11663
Acquasanta Terme AP 17 2916 14579
Bolognola MC 19 142 14721
Cascia PG 20 3217 17938

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
54 Km NE of Terni (111501 inhabitants)
55 Km N of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
92 Km S of Ancona (100861 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
100 Km NE of Guidonia Montecelio (88673 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 1.2 2020-07-09
23:55:21		 42.8227 13.2102 13 2020-11-19
12:37:01		 Bollettino Sismico Italiano INGV 82935251
Reviewed
Rev100 		ML 0.8 2020-07-09
23:55:22		 42.822 13.2208 12 2020-07-10
00:05:13		 Sala Sismica INGV-Roma 80915801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-09 23:55:21 ± 0.07
Latitude 42.8227 ± 0.0027
Longitude 13.2102 ± 0.0074
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 82935251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 453
Semi-minor axis of confidence ellipse (meter) 408
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26890
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.7
Num. used stations 8
Type of magnitude ML
Reference to an origin 80915801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-10 00:05:13

ML:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 5
Type of magnitude ML
Reference to an origin 82935251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-15 18:04:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CGL.BHZ. 2020-07-09T23:57:08.96 3.0 undecidable manual Sg 24.389999 0
XK.GIZZ.HHZ. 2020-07-09T23:57:04.65 3.0 undecidable manual Sn 1.05 0
IV.IST3.HHZ. 2020-07-09T23:56:53.87 3.0 undecidable manual Sn -2.31 0
IV.CMPR.HHZ. 2020-07-09T23:56:26.09 3.0 undecidable manual Sn -2.94 0
GU.TRAV.HHZ. 2020-07-09T23:56:20.47 3.0 undecidable manual Pn 7.87 0
CR.STON.BHZ. 2020-07-09T23:56:16.60 3.0 undecidable manual Pg 10.61 0
IV.ROSPO.HHZ. 2020-07-09T23:56:06.26 3.0 undecidable manual Sg 1.72 0
IV.MBAL.EHZ. 2020-07-09T23:56:04.04 3.0 positive manual Pn 5.38 0
IV.MURB.HHZ. 2020-07-09T23:55:40.57 3.0 undecidable manual Sn -2.45 0
IV.ROSPO.HHZ. 2020-07-09T23:55:39.21 3.0 undecidable manual Pn 0.58 0
IV.LNSS.HNN. 2020-07-09T23:55:32.39 0.6 undecidable manual S 210 28.0497 96 0.46 45
IV.MF5.EHZ. 2020-07-09T23:55:32.34 0.6 undecidable manual S 48 27.3504 97 0.61 42
IV.GUMA.HNE. 2020-07-09T23:55:32.52 0.3 undecidable manual S 21 28.4493 96 0.47 67
IV.CSP1.EHZ. 2020-07-09T23:55:32.37 0.6 undecidable manual S 359 29.8479 96 -0.04 49
IV.FDMO.HHZ. 2020-07-09T23:55:31.16 0.3 undecidable manual S 337 25.752 98 -0.16 72
IT.MTCL.HGN. 2020-07-09T23:55:31.30 0.3 undecidable manual S 318 25.5522 98 0.02 75
IV.T1299.EHE. 2020-07-09T23:55:30.46 0.6 undecidable manual S 164 21.7671 101 0.2 48
IV.SMA1.EHZ. 2020-07-09T23:55:30.45 0.6 undecidable manual S 154 23.6541 99 -0.31 47
IV.GUMA.HNE. 2020-07-09T23:55:27.84 0.3 undecidable manual P 21 28.4493 96 0.06 73
IV.CSP1.EHZ. 2020-07-09T23:55:27.80 0.1 undecidable manual P 359 29.8479 96 -0.2 95
IV.FDMO.HHZ. 2020-07-09T23:55:27.20 0.1 undecidable manual P 337 25.752 98 -0.16 96
IT.MTCL.HGN. 2020-07-09T23:55:27.29 0.3 undecidable manual P 318 25.5522 98 -0.05 74
IV.NRCA.HHZ. 2020-07-09T23:55:27.09 0.3 undecidable manual S 279 7.881 139 0.09 76
IV.LNSS.HNN. 2020-07-09T23:55:27.61 0.1 undecidable manual P 210 28.0497 96 -0.11 97
IV.MMO1.EHZ. 2020-07-09T23:55:27.48 0.3 undecidable manual S 48 12.7761 120 -0.52 70
IV.MF5.EHZ. 2020-07-09T23:55:27.68 0.1 undecidable manual P 48 27.3504 97 0.07 97
IV.MC2.EHZ. 2020-07-09T23:55:27.57 0.3 undecidable manual S 350 9.9789 130 0.17 74
IV.T1299.EHE. 2020-07-09T23:55:26.73 0.3 undecidable manual P 164 21.7671 101 -0.02 75
IV.SMA1.EHZ. 2020-07-09T23:55:26.92 0.1 undecidable manual P 154 23.6541 99 -0.12 98
IV.MMO1.EHZ. 2020-07-09T23:55:25.17 0.1 undecidable manual P 48 12.7761 120 -0.27 97
IV.MC2.EHZ. 2020-07-09T23:55:25.20 0.1 undecidable manual P 350 9.9789 130 0.1 100
IV.NRCA.HHZ. 2020-07-09T23:55:25.05 0.1 positive manual P 279 7.881 139 0.18 99
IV.TOLF.HHZ. 2020-07-09T23:55:23.84 3.0 undecidable manual P 2.31 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.4 0.00028115485 0.1536 AML other m 2020-07-09T23:55:27.30
IV.NRCA.HNN. ML:1.4 0.00031197740000000004 0.0896 AML other m 2020-07-09T23:55:27.74
IV.NRCA.HHN. ML:1.5 0.0003455 0.92 AML other m 2020-07-09T23:55:27.74
IV.FDMO.HHE. ML:0.3 0.000010405 0.2 AML other m 2020-07-09T23:55:31.55
IV.FDMO.HHN. ML:0.4 0.00001485 0.62 AML other m 2020-07-09T23:55:31.51
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