Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 03-10-2020 and time 07:22:00 (UTC) in region 2 km E Arquata del Tronto (AP)

A magnitude ML 1.3 earthquake occured in region: 2 km E Arquata del Tronto (AP), on

  • 03-10-2020 07:22:00 (UTC)
  • 03-10-2020 09:22:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7660, 13.3260 at 15 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 3 1178 1178
Acquasanta Terme AP 7 2916 4094
Montegallo AP 9 523 4617
Accumoli RI 10 667 5284
Valle Castellana TE 15 977 6261
Montemonaco AP 15 604 6865
Amatrice RI 15 2657 9522
Roccafluvione AP 16 2010 11532
Palmiano AP 18 196 11728
Rocca Santa Maria TE 19 537 12265
Venarotta AP 19 2066 14331
Norcia PG 19 4957 19288
Montefortino FM 20 1178 20466

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
55 Km E of Foligno (57155 inhabitants)
60 Km E of Terni (111501 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
80 Km W of Pescara (121014 inhabitants)
83 Km NW of Chieti (51815 inhabitants)
85 Km E of Perugia (166134 inhabitants)
96 Km S of Ancona (100861 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 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 1.3 2020-10-03
07:22:00		 42.7663 13.3262 15 2021-02-26
14:56:12		 Bollettino Sismico Italiano INGV 85802461
Reviewed
Rev100 		ML 1.5 2020-10-03
07:22:00		 42.7663 13.3262 15 2020-10-03
07:27:05		 Sala Sismica INGV-Roma 83461451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-03 07:22:00 ± 0.17
Latitude 42.7663 ± 0.0081
Longitude 13.3262 ± 0.0159
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85802461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1057
Semi-minor axis of confidence ellipse (meter) 996
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 5.17830
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 83461451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-03 07:27:05

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 85802461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 17:37:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2020-10-03T07:23:42.07 3.0 undecidable manual Sn 6.48 0
CR.ZAG.BHZ. 2020-10-03T07:23:31.90 3.0 undecidable manual Sn 1.21 0
IV.RESU.HHZ. 2020-10-03T07:23:29.32 3.0 positive manual P 571.2948 1.194 0
GU.RRL.HHZ. 2020-10-03T07:23:28.91 3.0 positive manual P 574.7913 1.11 0
OX.FUSE.HNZ. 2020-10-03T07:23:27.79 3.0 undecidable manual Sn -2.14 0
IV.IST3.HHZ. 2020-10-03T07:23:15.92 3.0 positive manual P 468.2757 1.137 0
IV.MILZ.HHZ. 2020-10-03T07:23:09.36 3.0 positive manual P 523.8756 -2.12 0
IV.CAPR.HNZ. 2020-10-03T07:22:55.93 3.0 undecidable manual P 417.3711 -2.29 0
IV.SCHR.EHZ. 2020-10-03T07:22:54.39 3.0 negative manual P 365.1567 2.67 0
IV.CMPR.HHZ. 2020-10-03T07:22:50.94 3.0 undecidable manual P 317.3379 5.17 0
IV.PTRJ.HNZ. 2020-10-03T07:22:49.40 3.0 undecidable manual Sn -1.17 0
CR.STON.BHZ. 2020-10-03T07:22:48.44 3.0 positive manual P 355.977 -2.14 0
IT.MCLF.HNZ. 2020-10-03T07:22:46.86 3.0 undecidable manual Sg 2.79 0
IV.FIR.HHZ. 2020-10-03T07:22:46.85 3.0 undecidable manual Sn 1.48 0
IV.BRSN.HNZ. 2020-10-03T07:22:42.65 3.0 undecidable manual Sn -0.82 0
IV.LRP.EHZ. 2020-10-03T07:22:17.99 3.0 positive manual P 125.9739 -2.86 0
IV.CSP1.EHZ. 2020-10-03T07:22:12.55 0.1 undecidable manual S 345 37.4292 99 0.02 96
IV.TERO.HHZ. 2020-10-03T07:22:10.34 0.1 undecidable manual S 125 27.6501 104 0.37 92
IV.RM33.EHZ. 2020-10-03T07:22:10.49 0.1 undecidable manual S 198 29.9478 102 -0.08 98
IV.NRCA.HHZ. 2020-10-03T07:22:07.88 0.1 undecidable manual S 293 18.7701 115 0.15 97
IV.FOSV.EHZ. 2020-10-03T07:22:07.63 3.0 undecidable manual P 74.37 -5.28 0
IV.SMA1.EHZ. 2020-10-03T07:22:06.32 0.1 undecidable manual S 177 15.0738 123 -0.54 89
IV.RM33.EHZ. 2020-10-03T07:22:06.37 0.6 undecidable manual P 198 29.9478 102 0.27 47
IV.CSP1.EHZ. 2020-10-03T07:22:06.56 0.1 undecidable manual P 345 37.4292 99 -0.68 84
IV.MTRA.EHZ. 2020-10-03T07:22:05.08 0.1 undecidable manual S 100 5.7942 154 -0.13 100
IV.TERO.HHZ. 2020-10-03T07:22:05.91 0.3 undecidable manual P 125 27.6501 104 0.15 72
IV.SMA1.EHZ. 2020-10-03T07:22:04.11 0.1 negative manual P 177 15.0738 123 0.14 99
IV.NRCA.HHZ. 2020-10-03T07:22:04.79 0.1 undecidable manual P 293 18.7701 115 0.32 94
IV.MTRA.EHZ. 2020-10-03T07:22:03.41 1.0 undecidable manual P 100 5.7942 154 0.4 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:1.4 0.00029200000000000005 0.44 AML other m 2020-10-03T07:22:09.39
IV.MTRA.EHN. ML:1.5 0.000354 0.3 AML other m 2020-10-03T07:22:05.11
IV.NRCA.HHN. ML:1.5 0.0001955 1.84 AML other m 2020-10-03T07:22:07.03
IV.NRCA.HHE. ML:1.6 0.00026900000000000003 0.44 AML other m 2020-10-03T07:22:08.23
IV.MTRA.EHE. ML:1.4 0.00030202289999999997 0.4576 AML other m 2020-10-03T07:22:08.11
IV.SMA1.EHN. ML:1.2 0.00012020375 0.0992 AML other m 2020-10-03T07:22:06.80
IV.SMA1.EHE. ML:1.2 0.00011390269 0.16 AML other m 2020-10-03T07:22:07.22
IV.NRCA.HNE. ML:1.5 0.00023423265 0.1184 AML other m 2020-10-03T07:22:08.23
IV.TERO.HHE. ML:0.8 0.00002791536 0.0576 AML other m 2020-10-03T07:22:10.45
IV.RM33.EHN. ML:1.1 0.0000552387645 1.3216 AML other m 2020-10-03T07:22:11.28
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