Earthquake with magnitude of ML 1.2 on date 01-09-2021 and time 03:16:36 (UTC) in region 6 km NW Arquata del Tronto (AP)

A magnitude ML 1.2 earthquake occured in region: 6 km NW Arquata del Tronto (AP), on

  • 01-09-2021 03:16:36 (UTC)
  • 01-09-2021 05:16:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8060, 13.2440 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 6 1178 1178
Montegallo AP 8 523 1701
Accumoli RI 12 667 2368
Norcia PG 12 4957 7325
Castelsantangelo sul Nera MC 12 281 7606
Montemonaco AP 13 604 8210
Acquasanta Terme AP 14 2916 11126
Montefortino FM 17 1178 12304
Ussita MC 18 444 12748
Preci PG 19 724 13472
Visso MC 19 1107 14579
Amatrice RI 20 2657 17236
Roccafluvione AP 20 2010 19246

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
52 Km N of L'Aquila (69753 inhabitants)
56 Km E of Terni (111501 inhabitants)
77 Km E of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 inhabitants)
93 Km S of Ancona (100861 inhabitants)
99 Km NE of Guidonia Montecelio (88673 inhabitants)
100 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
Reviewed
Rev100
ML 1.2 2021-09-01
03:16:36
42.8055 13.2443 9 2021-09-01
03:47:53
Sala Sismica INGV-Roma 94894151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-01 03:16:36 ± 0.1
Latitude 42.8055 ± 0.0036
Longitude 13.2443 ± 0.0049
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94894151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 266
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 18
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) 0.29678
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 94894151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-01 03:47:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.EHN. 2021-09-01T03:16:48.10 0.3 undecidable manual S 184 32.9448 50 0.04 72
IV.GAVE.EHN. 2021-09-01T03:16:48.02 0.6 undecidable manual S 246 31.1466 50 0.45 45
IV.LNSS.HNE. 2021-09-01T03:16:46.62 0.3 undecidable manual S 217 27.9498 108 0.02 73
IV.T1299.HNZ. 2021-09-01T03:16:44.30 0.3 undecidable manual S 171 19.2696 116 0.51 66
IV.SMA1.EHZ. 2021-09-01T03:16:44.19 0.6 undecidable manual S 159 20.7681 114 -0.08 49
IV.MML1.EHZ. 2021-09-01T03:16:44.39 3.0 undecidable manual P -0.06 0
IV.RM33.EHN. 2021-09-01T03:16:43.16 0.1 undecidable manual P 184 32.9448 50 0.04 97
IV.GUMA.HHZ. 2021-09-01T03:16:42.90 3.0 undecidable manual P 0.09 0
IV.GAVE.EHN. 2021-09-01T03:16:42.89 0.3 undecidable manual P 246 31.1466 50 0.05 73
IV.CSP1.EHZ. 2021-09-01T03:16:42.86 3.0 positive manual P -0.28 0
IV.MTRA.EHZ. 2021-09-01T03:16:42.02 0.3 undecidable manual S 114 13.4754 124 -0.04 75
IV.LNSS.HNE. 2021-09-01T03:16:42.07 0.1 undecidable manual P 217 27.9498 108 -0.21 94
IV.MF5.EHZ. 2021-09-01T03:16:42.63 3.0 undecidable manual P 0.24 0
IV.MC2.EHZ. 2021-09-01T03:16:42.26 0.3 undecidable manual S 339 12.5763 126 0.46 68
IV.NRCA.HHZ. 2021-09-01T03:16:41.07 0.1 undecidable manual S 286 11.0778 130 -0.31 96
IV.MMO1.EHZ. 2021-09-01T03:16:41.71 0.3 undecidable manual S 33 12.3765 127 -0.03 75
IV.T1299.HNZ. 2021-09-01T03:16:40.75 0.1 undecidable manual P 171 19.2696 116 0.09 98
IV.SMA1.EHZ. 2021-09-01T03:16:40.55 0.1 undecidable manual P 159 20.7681 114 -0.39 92
IV.MTRA.EHZ. 2021-09-01T03:16:39.72 0.3 undecidable manual P 114 13.4754 124 0.06 75
IV.MC2.EHZ. 2021-09-01T03:16:39.59 0.3 undecidable manual P 339 12.5763 126 0.08 75
IV.MMO1.EHZ. 2021-09-01T03:16:39.40 0.1 undecidable manual P 33 12.3765 127 -0.08 99
IV.NRCA.HHZ. 2021-09-01T03:16:39.21 0.1 undecidable manual P 286 11.0778 130 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.0002145 0.14 AML other m 2021-09-01T03:16:41.21
IV.NRCA.HHN. ML:1.2 0.0002175 0.14 AML other m 2021-09-01T03:16:41.73
IV.MTRA.EHE. ML:1.3 0.0002095 0.16 AML other m 2021-09-01T03:16:42.78
IV.MTRA.EHN. ML:1.4 0.00023961949999999998 0.3792 AML other m 2021-09-01T03:16:42.64
IV.SMA1.EHN. ML:0.3 0.000017041085 0.9408 AML other m 2021-09-01T03:16:44.81
IV.SMA1.EHE. ML:0.4 0.0000181702955 0.3008 AML other m 2021-09-01T03:16:44.51
IV.NRCA.HNE. ML:1.2 0.0002197189 0.2704 AML other m 2021-09-01T03:16:41.42
IV.NRCA.HNN. ML:1.2 0.0002124555 0.1296 AML other m 2021-09-01T03:16:41.73
IV.MTRA.HNE. ML:1.3 0.00021026865 0.16 AML other m 2021-09-01T03:16:42.70
IV.MTRA.HNN. ML:1.4 0.00025161535 0.3792 AML other m 2021-09-01T03:16:42.63
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download