Earthquake with magnitude of ML 1.6 on date 25-10-2020 and time 21:12:22 (Italy) in region 4 km W Arquata del Tronto (AP)

A magnitude ML 1.6 earthquake occured in region: 4 km W Arquata del Tronto (AP), on

  • 25-10-2020 20:12:22 (UTC)
  • 25-10-2020 21:12:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.764, 13.248 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.

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 8 667 1845
Montegallo AP 11 523 2368
Norcia PG 13 4957 7325
Acquasanta Terme AP 13 2916 10241
Amatrice RI 15 2657 12898
Castelsantangelo sul Nera MC 17 281 13179
Montemonaco AP 17 604 13783
Cittareale RI 18 482 14265
Cascia PG 20 3217 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
48 Km N of L'Aquila (69753 inhabitants)
49 Km E of Foligno (57155 inhabitants)
54 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
80 Km E of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
88 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 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 1.6 2020-10-25
20:12:22
42.7643 13.248 11 2021-02-26
14:56:19
Bollettino Sismico Italiano INGV 87208821
Reviewed
Rev100
ML 1.6 2020-10-25
20:12:22
42.7612 13.2472 10 2020-10-25
20:17:32
Sala Sismica INGV-Roma 84127881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 20:12:22 ± 0.06
Latitude 42.7643 ± 0.0027
Longitude 13.2480 ± 0.0061
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 87208821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 466
Semi-minor axis of confidence ellipse (meter) 136
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.77881
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 55
Type of magnitude ML
Reference to an origin 87208821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-16 11:01:53

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 84127881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 20:17:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2020-10-25T20:12:52.79 3.0 undecidable manual S -4.86 0
IV.EL6.EHZ. 2020-10-25T20:12:42.34 0.6 undecidable manual S 349 0.5747 50 0.59 40
IV.ASSB.HHZ. 2020-10-25T20:12:39.94 0.6 undecidable manual S 303 0.5135 50 0 47
IV.ARRO.EHZ. 2020-10-25T20:12:37.06 0.6 undecidable manual S 243 0.4002 50 0.49 43
IV.ATFO.HHZ. 2020-10-25T20:12:37.37 0.1 undecidable manual P 321 0.7788 50 0.41 81
IV.ARVD.HHZ. 2020-10-25T20:12:36.45 0.1 undecidable manual P 343 0.7662 50 -0.3 83
IV.T0110.HHZ. 2020-10-25T20:12:35.21 0.1 undecidable manual P 144 0.661 50 0.26 86
IV.SAP2.EHZ. 2020-10-25T20:12:35.71 0.6 undecidable manual S 18 0.3498 50 0.61 42
IV.GIGS.HHN. 2020-10-25T20:12:35.92 0.6 undecidable manual S 142 0.3921 50 -0.43 44
IV.FOSV.EHZ. 2020-10-25T20:12:34.24 0.1 undecidable manual P 326 0.6385 50 -0.32 85
IV.GUMA.HHZ. 2020-10-25T20:12:34.25 0.6 undecidable manual S 12 0.3049 50 0.49 44
IV.CESI.HHZ. 2020-10-25T20:12:34.80 0.3 undecidable manual S 314 0.348 50 -0.24 69
IV.MF5.EHZ. 2020-10-25T20:12:33.25 0.6 undecidable manual S 35 0.2716 50 0.47 44
IV.EL6.EHZ. 2020-10-25T20:12:33.24 0.1 undecidable manual P 349 0.5747 50 -0.23 88
IV.FAGN.HHZ. 2020-10-25T20:12:33.05 0.1 undecidable manual P 153 0.5567 50 -0.11 90
IV.TERO.HHZ. 2020-10-25T20:12:33.29 0.3 undecidable manual S 118 0.2977 50 -0.25 69
IV.ASSB.HHZ. 2020-10-25T20:12:33.15 0.1 positive manual P 303 0.5135 50 0.73 77
IV.CAMP.HHZ. 2020-10-25T20:12:32.23 0.6 undecidable manual S 153 0.2572 50 -0.12 48
IV.RM33.EHZ. 2020-10-25T20:12:32.53 0.6 undecidable manual S 186 0.2563 50 0.21 47
IT.MTCL.HGZ. 2020-10-25T20:12:32.92 0.6 undecidable manual S 322 0.2932 50 -0.48 44
IV.CESX.HHE. 2020-10-25T20:12:32.04 0.1 undecidable manual P 252 0.5099 50 -0.33 87
IV.FDMO.HHZ. 2020-10-25T20:12:32.87 0.6 undecidable manual S 337 0.2968 50 -0.64 41
IV.LNSS.HHZ. 2020-10-25T20:12:31.53 0.6 undecidable manual S 223 0.2221 50 0.22 47
MN.AQU.HNN. 2020-10-25T20:12:30.70 0.1 undecidable manual P 164 0.4263 50 -0.23 91
IV.ARRO.EHZ. 2020-10-25T20:12:30.76 0.3 negative manual P 243 0.4002 50 0.28 68
IV.MML1.HNE. 2020-10-25T20:12:30.25 0.1 undecidable manual P 330 0.4029 50 -0.29 90
IV.MNTT.EHZ. 2020-10-25T20:12:30.94 0.1 undecidable manual P 40 0.3912 50 0.6 83
IV.OFFI.HHZ. 2020-10-25T20:12:30.52 0.3 positive manual P 62 0.3633 50 0.67 61
IV.CESI.HHZ. 2020-10-25T20:12:29.46 0.1 positive manual P 314 0.348 50 -0.13 94
IV.SAP2.EHZ. 2020-10-25T20:12:29.90 0.1 undecidable manual P 18 0.3498 50 0.27 91
IV.PF6.EHN. 2020-10-25T20:12:29.48 0.1 undecidable manual P 354 0.375 50 -0.59 83
IV.MC2.EHZ. 2020-10-25T20:12:29.04 0.6 undecidable manual S 344 0.1529 122 -0.06 49
IV.GIGS.HHN. 2020-10-25T20:12:29.92 0.1 undecidable manual P 142 0.3921 50 -0.43 87
IV.RM33.EHZ. 2020-10-25T20:12:28.06 0.1 positive manual P 186 0.2563 50 0.04 97
IV.GUMA.HHZ. 2020-10-25T20:12:28.90 0.1 positive manual P 12 0.3049 50 0.04 96
IT.MTCL.HGZ. 2020-10-25T20:12:28.40 0.1 undecidable manual P 322 0.2932 50 -0.25 92
IV.CSP1.EHE. 2020-10-25T20:12:28.88 0.1 undecidable manual P 355 0.3292 50 -0.38 89
IV.FDMO.HHZ. 2020-10-25T20:12:28.41 0.1 positive manual P 337 0.2968 50 -0.31 91
IV.MMO1.EHZ. 2020-10-25T20:12:28.54 0.6 undecidable manual S 23 0.1466 123 -0.35 47
IV.MF5.EHZ. 2020-10-25T20:12:28.32 0.1 undecidable manual P 35 0.2716 50 0.03 97
IV.SMA1.EHZ. 2020-10-25T20:12:28.92 0.3 undecidable manual S 154 0.1484 123 -0.02 75
IV.TERO.HHZ. 2020-10-25T20:12:28.60 0.1 undecidable manual P 118 0.2977 50 -0.12 95
IV.FEMA.HNE. 2020-10-25T20:12:28.64 0.1 undecidable manual P 324 0.2455 50 0.8 78
IV.NRCA.HNZ. 2020-10-25T20:12:27.95 0.6 undecidable manual S 305 0.1196 128 -0.1 49
IV.LNSS.HHZ. 2020-10-25T20:12:27.55 0.1 undecidable manual P 223 0.2221 50 0.11 97
IV.CAMP.HHZ. 2020-10-25T20:12:27.85 0.1 undecidable manual P 153 0.2572 50 -0.19 94
IV.MTRA.HNZ. 2020-10-25T20:12:27.55 0.6 undecidable manual S 94 0.1097 131 -0.19 49
IV.SMA1.EHZ. 2020-10-25T20:12:26.22 0.1 positive manual P 154 0.1484 123 0.14 97
IV.MC2.EHZ. 2020-10-25T20:12:26.25 0.1 positive manual P 344 0.1529 122 0.08 98
IV.T1299.HNN. 2020-10-25T20:12:26.12 0.1 undecidable manual P 169 0.1322 126 0.34 94
IV.MTRA.HNZ. 2020-10-25T20:12:25.42 0.1 undecidable manual P 94 0.1097 131 0.04 100
IV.NRCA.HNZ. 2020-10-25T20:12:25.67 0.1 negative manual P 305 0.1196 128 0.11 98
IV.MMO1.EHZ. 2020-10-25T20:12:25.83 0.6 undecidable manual P 23 0.1466 123 -0.22 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:1.6 0.0004525466 0.1024 AML other m 2020-10-25T20:12:27.60
IV.MTRA.EHN. ML:1.6 0.0004621626 0.0896 AML other m 2020-10-25T20:12:27.61
IV.MTRA.HNE. ML:1.7 0.00052074105 0.0896 AML other m 2020-10-25T20:12:27.66
IV.NRCA.HNE. ML:2.4 0.002595 0.06 AML other m 2020-10-25T20:12:28.17
IV.NRCA.HHE. ML:2.4 0.002745 0.06 AML other m 2020-10-25T20:12:28.17
IV.NRCA.HHN. ML:2.1 0.0013951865 0.0768 AML other m 2020-10-25T20:12:28.02
IV.NRCA.HNN. ML:2 0.0011594495 0.0896 AML other m 2020-10-25T20:12:28.02
IV.MTRA.EHE. ML:1.7 0.0005363767 0.1024 AML other m 2020-10-25T20:12:27.67
IV.SMA1.EHE. ML:1.6 0.00037 0.22 AML other m 2020-10-25T20:12:29.27
IV.SMA1.EHN. ML:1.4 0.0002107164 0.1408 AML other m 2020-10-25T20:12:29.64
IV.LNSS.HHN. ML:1.6 0.000263 0.36 AML other m 2020-10-25T20:12:32.06
IV.CAMP.HHE. ML:1.6 0.000202 0.22 AML other m 2020-10-25T20:12:32.50
IV.LNSS.HHE. ML:1.6 0.00021436255 0.1408 AML other m 2020-10-25T20:12:32.50
IV.CAMP.HHN. ML:1.1 7.185E-5 0.82 AML other m 2020-10-25T20:12:33.43
IV.RM33.HNN. ML:1.5 0.0001558728 0.128 AML other m 2020-10-25T20:12:33.66
IV.FDMO.HHN. ML:1.4 0.000108180495 0.1664 AML other m 2020-10-25T20:12:33.71
IV.FDMO.HHE. ML:1.5 0.000134 0.26 AML other m 2020-10-25T20:12:33.47
IV.MF5.EHN. ML:1.5 0.000156 0.22 AML other m 2020-10-25T20:12:33.65
IV.TERO.HHN. ML:1.6 0.0001617883 0.064 AML other m 2020-10-25T20:12:33.78
IV.TERO.HHE. ML:1.7 0.0001975 0.08 AML other m 2020-10-25T20:12:33.81
IV.MF5.EHE. ML:1.4 0.0001222 1.44 AML other m 2020-10-25T20:12:33.10
IV.RM33.EHN. ML:1.5 0.0001560059 0.0768 AML other m 2020-10-25T20:12:33.83
IV.RM33.EHE. ML:1.5 0.00015753335 0.1024 AML other m 2020-10-25T20:12:33.97
IV.RM33.HNE. ML:1.5 0.000157272605 0.1024 AML other m 2020-10-25T20:12:33.97
IV.GUMA.HHN. ML:2.3 0.0008925 0.3 AML other m 2020-10-25T20:12:34.43
IV.GUMA.HHE. ML:2.3 0.000815 0.28 AML other m 2020-10-25T20:12:34.49
IV.CESI.HHE. ML:1.7 0.0001659191 0.128 AML other m 2020-10-25T20:12:35.18
IV.CESI.HHN. ML:1.8 0.0001986299 0.1792 AML other m 2020-10-25T20:12:35.20
IV.SAP2.EHN. ML:2.3 0.0006505 0.14 AML other m 2020-10-25T20:12:36.41
IV.ARRO.EHN. ML:1.1 3.4449465E-5 0.1792 AML other m 2020-10-25T20:12:37.71
IV.SAP2.EHE. ML:1.5 0.00011895305 0.1408 AML other m 2020-10-25T20:12:37.75
IV.ARRO.EHE. ML:1.1 3.985E-5 0.16 AML other m 2020-10-25T20:12:37.81
IV.ASSB.HHE. ML:1.3 4.47E-5 0.18 AML other m 2020-10-25T20:12:40.63
IV.ASSB.HHN. ML:1.1 2.77658E-5 0.1536 AML other m 2020-10-25T20:12:41.68
IV.FAGN.HHN. ML:1.4 4.92E-5 1.64 AML other m 2020-10-25T20:12:44.88
IV.FOSV.EHN. ML:1.2 2.6930085E-5 0.2176 AML other m 2020-10-25T20:12:44.94
IV.FAGN.HHE. ML:1.5 6.365E-5 0.3 AML other m 2020-10-25T20:12:46.45
IV.FOSV.EHE. ML:1.2 2.4002225E-5 0.1536 AML other m 2020-10-25T20:12:45.68
IV.T0110.HHE. ML:1.5 4.2736275E-5 0.2688 AML other m 2020-10-25T20:12:50.44
IV.T0110.HHN. ML:1.4 3.5174335E-5 0.4608 AML other m 2020-10-25T20:12:49.61
IV.ARVD.HHE. ML:1.1 1.71E-5 1 AML other m 2020-10-25T20:12:51.25
IV.ARVD.HHN. ML:0.9 9.232098E-6 0.1408 AML other m 2020-10-25T20:12:49.00
IV.LNSS.HNE. ML:1.5 0.00020535235 0.128 AML other m 2020-10-25T20:12:32.50
IV.LNSS.HNN. ML:1.6 0.0002526874 0.2432 AML other m 2020-10-25T20:12:32.08
IV.TERO.HNE. ML:1.6 0.00018314085 0.0768 AML other m 2020-10-25T20:12:33.80
IV.TERO.HNN. ML:1.5 0.00014987545 0.064 AML other m 2020-10-25T20:12:33.78
IV.GUMA.HNE. ML:2.2 0.00074688305 0.32 AML other m 2020-10-25T20:12:34.44
IV.CESI.HNN. ML:1.8 0.00020962005 0.1792 AML other m 2020-10-25T20:12:36.22
IV.CESI.HNE. ML:1.7 0.00017652475 0.1408 AML other m 2020-10-25T20:12:35.19
IV.OFFI.HHE. ML:1.5 0.00010337585 0.3584 AML other m 2020-10-25T20:12:37.95
IV.OFFI.HHN. ML:1.7 0.00016431221 0.1792 AML other m 2020-10-25T20:12:37.95
IV.MNTT.EHE. ML:1.7 0.00015686405 0.1792 AML other m 2020-10-25T20:12:38.99
IV.MNTT.EHN. ML:1.7 0.00015456355 0.2688 AML other m 2020-10-25T20:12:41.82
IV.EL6.EHN. ML:1.6 8.403702E-5 0.2304 AML other m 2020-10-25T20:12:45.33
IV.EL6.EHE. ML:1.4 5.185818E-5 0.1408 AML other m 2020-10-25T20:12:45.02
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