Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 08-10-2020 and time 04:42:34 (Italy) in region 5 km W Arquata del Tronto (AP)

A magnitude ML 1.9 earthquake occured in region: 5 km W Arquata del Tronto (AP), on

  • 08-10-2020 02:42:34 (UTC)
  • 08-10-2020 04:42:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7540, 13.2480 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
Arquata del Tronto AP 5 1178 1178
Accumoli RI 6 667 1845
Montegallo AP 12 523 2368
Norcia PG 13 4957 7325
Acquasanta Terme AP 13 2916 10241
Amatrice RI 14 2657 12898
Cittareale RI 17 482 13380
Castelsantangelo sul Nera MC 18 281 13661
Montemonaco AP 18 604 14265
Cascia PG 20 3217 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
50 Km E of Foligno (57155 inhabitants)
54 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
80 Km E of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
88 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 1.9 2020-10-08
02:42:34		 42.7537 13.2478 11 2021-02-26
14:55:58		 Bollettino Sismico Italiano INGV 83726281
Reviewed
Rev100 		ML 1.9 2020-10-08
02:42:34		 42.7532 13.2523 10 2020-10-08
02:47:34		 Sala Sismica INGV-Roma 83604131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-08 02:42:34 ± 0.05
Latitude 42.7537 ± 0.0027
Longitude 13.2478 ± 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 83726281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.77701
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 83726281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-12 12:20:11

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 83604131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-08 02:47:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2020-10-08T02:42:52.68 0.6 undecidable manual S 276 55.5 50 0.72 38
IV.FIAM.HHZ. 2020-10-08T02:42:51.81 0.6 undecidable manual S 191 54.9006 50 0 46
IV.MML1.HNE. 2020-10-08T02:42:49.63 0.3 undecidable manual S 331 45.8208 50 0.25 67
IV.ARVD.HHZ. 2020-10-08T02:42:49.80 0.3 undecidable manual P 343 86.247 50 0.45 60
IV.ARRO.EHZ. 2020-10-08T02:42:49.40 0.6 undecidable manual S 244 43.8228 50 0.55 42
IV.SAP2.EHZ. 2020-10-08T02:42:48.57 0.6 undecidable manual S 18 40.0266 50 0.75 39
IV.GUMA.HHZ. 2020-10-08T02:42:47.03 0.3 undecidable manual S 12 35.0427 50 0.53 64
IV.CSP1.EHZ. 2020-10-08T02:42:47.10 0.6 undecidable manual S 355 37.629 50 -0.11 47
IV.CESI.HHZ. 2020-10-08T02:42:47.62 0.6 undecidable manual S 315 39.4272 50 -0.06 47
IV.MF5.EHZ. 2020-10-08T02:42:46.13 0.1 undecidable manual S 33 31.1466 50 0.66 82
IV.ATCC.EHZ. 2020-10-08T02:42:46.78 0.3 undecidable manual P 314 68.7756 50 0.13 66
IV.FDMO.HHZ. 2020-10-08T02:42:46.06 0.3 undecidable manual S 337 33.9438 50 -0.16 70
IV.EL6.EHZ. 2020-10-08T02:42:46.00 0.6 undecidable manual P 350 64.9905 50 -0.07 45
IT.MTCL.HGZ. 2020-10-08T02:42:45.64 0.6 undecidable manual S 323 33.4443 50 -0.44 44
IV.GAVE.EHZ. 2020-10-08T02:42:45.33 0.6 undecidable manual S 257 29.6481 50 0.27 46
IV.TERO.HHZ. 2020-10-08T02:42:45.26 0.6 undecidable manual S 116 32.4453 50 -0.56 43
IV.SNTG.HHZ. 2020-10-08T02:42:45.25 0.3 undecidable manual P 336 60.9945 50 -0.2 66
IV.MOMA.HHZ. 2020-10-08T02:42:44.68 0.1 negative manual P 276 55.5 50 0.07 92
IV.FIAM.HHZ. 2020-10-08T02:42:44.67 0.6 undecidable manual P 191 54.9006 50 0.15 45
IV.CAMP.HHZ. 2020-10-08T02:42:44.14 0.3 undecidable manual S 151 27.5502 50 -0.35 68
IV.ASSB.HHZ. 2020-10-08T02:42:44.60 0.3 undecidable manual P 304 57.5979 50 -0.34 65
IV.RM33.EHZ. 2020-10-08T02:42:44.42 0.3 undecidable manual S 186 27.2505 50 -0.01 73
IV.FEMA.HNE. 2020-10-08T02:42:44.17 0.6 undecidable manual S 325 28.1496 50 -0.5 44
IV.MNTT.EHZ. 2020-10-08T02:42:43.49 0.1 negative manual P 39 44.3223 50 0.59 82
IV.LNSS.HHZ. 2020-10-08T02:42:43.79 0.3 undecidable manual S 225 23.754 50 0.29 70
IV.ARRO.EHZ. 2020-10-08T02:42:42.90 0.3 undecidable manual P 244 43.8228 50 0.09 70
IV.MML1.HNE. 2020-10-08T02:42:42.87 0.1 undecidable manual P 331 45.8208 50 -0.25 90
IV.SAP2.EHZ. 2020-10-08T02:42:42.98 0.3 undecidable manual P 18 40.0266 50 0.76 58
IV.PF6.EHN. 2020-10-08T02:42:42.25 0.1 undecidable manual P 354 42.8238 50 -0.41 87
IV.GUMA.HHZ. 2020-10-08T02:42:41.50 0.1 undecidable manual P 12 35.0427 50 0.05 95
IV.MMO1.EHZ. 2020-10-08T02:42:41.39 0.3 undecidable manual S 22 17.3715 121 -0.22 71
IV.T1299.HNN. 2020-10-08T02:42:41.02 0.3 undecidable manual S 168 13.5753 128 0.51 67
IV.MC2.EHZ. 2020-10-08T02:42:41.92 0.6 undecidable manual S 345 18.1707 120 0.08 49
IV.CSP1.EHZ. 2020-10-08T02:42:41.56 0.1 negative manual P 355 37.629 50 -0.31 90
IV.CESI.HHZ. 2020-10-08T02:42:41.92 0.1 positive manual P 315 39.4272 50 -0.22 91
IV.GAVE.EHZ. 2020-10-08T02:42:40.52 0.1 positive manual P 257 29.6481 50 -0.1 95
IV.TERO.HHZ. 2020-10-08T02:42:40.62 0.3 undecidable manual P 116 32.4453 50 -0.44 66
IV.MF5.EHZ. 2020-10-08T02:42:40.92 0.1 undecidable manual P 33 31.1466 50 0.06 96
IV.NRCA.HNZ. 2020-10-08T02:42:40.68 0.3 undecidable manual S 309 14.0748 127 0.04 74
IT.MTCL.HGZ. 2020-10-08T02:42:40.87 0.1 undecidable manual P 323 33.4443 50 -0.34 90
IV.RM33.EHZ. 2020-10-08T02:42:40.12 0.1 positive manual P 186 27.2505 50 -0.14 95
IV.FDMO.HHZ. 2020-10-08T02:42:40.95 0.1 undecidable manual P 337 33.9438 50 -0.35 90
IV.FEMA.HNE. 2020-10-08T02:42:40.19 0.1 undecidable manual P 325 28.1496 50 -0.21 93
IV.SMA1.EHZ. 2020-10-08T02:42:40.84 0.6 undecidable manual S 152 15.3735 124 -0.19 48
IV.CAMP.HHZ. 2020-10-08T02:42:40.07 0.1 undecidable manual P 151 27.5502 50 -0.23 93
IV.MTRA.EHZ. 2020-10-08T02:42:39.99 0.3 undecidable manual S 88 12.0768 131 -0.14 73
IV.LNSS.HHZ. 2020-10-08T02:42:39.69 0.1 positive manual P 225 23.754 50 -0.04 98
IV.NRCA.HNZ. 2020-10-08T02:42:38.15 0.1 positive manual P 309 14.0748 127 0.08 98
IV.SMA1.EHZ. 2020-10-08T02:42:38.36 0.1 negative manual P 152 15.3735 124 0.06 99
IV.MMO1.EHZ. 2020-10-08T02:42:38.52 0.1 negative manual P 22 17.3715 121 -0.11 97
IV.T1299.HNN. 2020-10-08T02:42:38.29 0.1 positive manual P 168 13.5753 128 0.29 94
IV.MC2.EHZ. 2020-10-08T02:42:38.75 0.1 undecidable manual P 345 18.1707 120 -0.01 99
IV.MTRA.EHZ. 2020-10-08T02:42:37.79 0.1 negative manual P 88 12.0768 131 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:2.1 0.00148 0.42 AML other m 2020-10-08T02:42:40.12
IV.MTRA.HNE. ML:2.1 0.001465 0.42 AML other m 2020-10-08T02:42:40.33
IV.MTRA.HNN. ML:2.0 0.00115 0.4 AML other m 2020-10-08T02:42:40.61
IV.MTRA.EHN. ML:2.0 0.001165 0.42 AML other m 2020-10-08T02:42:40.41
IV.NRCA.HNE. ML:2.2 0.001685 1.24 AML other m 2020-10-08T02:42:40.10
IV.SMA1.EHN. ML:1.7 0.0004445 0.22 AML other m 2020-10-08T02:42:41.29
IV.NRCA.HNN. ML:2.4 0.0025949999999999997 0.12 AML other m 2020-10-08T02:42:41.38
IV.NRCA.HHN. ML:2.4 0.002785 0.14 AML other m 2020-10-08T02:42:41.39
IV.NRCA.HHE. ML:2.3 0.001845 0.9 AML other m 2020-10-08T02:42:41.10
IV.SMA1.EHE. ML:1.6 0.00040649999999999996 1.02 AML other m 2020-10-08T02:42:41.31
IV.LNSS.HNN. ML:2.1 0.0007675000000000001 1.48 AML other m 2020-10-08T02:42:43.88
IV.LNSS.HHN. ML:2.1 0.000826 1.48 AML other m 2020-10-08T02:42:43.88
IV.LNSS.HHE. ML:2.0 0.0006425 0.18 AML other m 2020-10-08T02:42:43.84
IV.RM33.HNN. ML:1.9 0.0003965 0.14 AML other m 2020-10-08T02:42:44.77
IV.RM33.EHN. ML:1.8 0.000365 0.14 AML other m 2020-10-08T02:42:44.84
IV.CAMP.HHN. ML:1.2 0.00007835000000000001 1.02 AML other m 2020-10-08T02:42:44.41
IV.LNSS.HNE. ML:2.0 0.0005895000000000001 0.84 AML other m 2020-10-08T02:42:44.94
IV.RM33.HNE. ML:1.8 0.00034899999999999997 1.36 AML other m 2020-10-08T02:42:45.13
IV.RM33.EHE. ML:1.8 0.000356 0.66 AML other m 2020-10-08T02:42:45.13
IV.TERO.HHE. ML:1.9 0.000319 0.28 AML other m 2020-10-08T02:42:45.64
IV.TERO.HHN. ML:1.9 0.0003275 0.1 AML other m 2020-10-08T02:42:45.88
IV.GAVE.EHN. ML:1.8 0.00033600000000000004 0.2 AML other m 2020-10-08T02:42:45.97
IV.FDMO.HHE. ML:1.5 0.0001245 0.22 AML other m 2020-10-08T02:42:46.10
IV.FDMO.HHN. ML:1.6 0.00017999999999999998 0.32 AML other m 2020-10-08T02:42:46.18
IV.MF5.EHE. ML:2.0 0.000474 0.54 AML other m 2020-10-08T02:42:46.85
IV.GAVE.EHE. ML:1.9 0.00035299999999999996 0.2 AML other m 2020-10-08T02:42:46.70
IV.GUMA.HHN. ML:2.3 0.0008595 0.26 AML other m 2020-10-08T02:42:47.26
IV.GUMA.HNE. ML:2.3 0.000868 0.34 AML other m 2020-10-08T02:42:47.26
IV.GUMA.HHE. ML:2.2 0.000704 0.36 AML other m 2020-10-08T02:42:47.28
IV.MF5.EHN. ML:1.8 0.000304 0.72 AML other m 2020-10-08T02:42:47.82
IV.CAMP.HHE. ML:1.1 0.00005755 1.34 AML other m 2020-10-08T02:42:47.92
IV.CSP1.EHE. ML:1.9 0.0003015 0.34 AML other m 2020-10-08T02:42:48.18
IV.CESI.HHN. ML:1.9 0.00028500000000000004 0.52 AML other m 2020-10-08T02:42:48.11
IV.CESI.HHE. ML:1.6 0.0001575 0.9 AML other m 2020-10-08T02:42:48.93
IV.CSP1.EHN. ML:1.8 0.0002385 1.44 AML other m 2020-10-08T02:42:49.18
IV.ARRO.EHN. ML:1.6 0.0001085 0.2 AML other m 2020-10-08T02:42:50.32
IV.ARRO.EHE. ML:1.8 0.0001805 0.64 AML other m 2020-10-08T02:42:50.27
IV.FIAM.HHE. ML:1.1 0.0000302 0.24 AML other m 2020-10-08T02:42:52.32
IV.GUMA.HNN. ML:2.5 0.0013464999999999998 1.58 AML other m 2020-10-08T02:42:53.14
IV.MNTT.EHE. ML:2.2 0.000446 0.58 AML other m 2020-10-08T02:42:53.15
IV.FIAM.HHN. ML:1.2 0.0000373 0.86 AML other m 2020-10-08T02:42:53.25
IV.MNTT.EHN. ML:2.0 0.000341 0.54 AML other m 2020-10-08T02:42:53.80
IV.MOMA.HHE. ML:1.8 0.000155 1.8 AML other m 2020-10-08T02:42:53.00
IV.ASSB.HHN. ML:1.6 0.00008615000000000001 0.86 AML other m 2020-10-08T02:42:54.00
IV.MOMA.HHN. ML:1.8 0.00015999999999999999 0.56 AML other m 2020-10-08T02:42:54.56
IV.SNTG.HHE. ML:1.2 0.00003525 0.7 AML other m 2020-10-08T02:42:55.20
IV.ASSB.HHE. ML:1.6 0.00009635 1.28 AML other m 2020-10-08T02:42:55.34
IV.SNTG.HHN. ML:1.3 0.00004085 0.54 AML other m 2020-10-08T02:43:01.37
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