Earthquake with magnitude of ML 1.4 on date 01-01-2021 and time 21:17:21 (Italy) in region 2 km NE Arquata del Tronto (AP)

A magnitude ML 1.4 earthquake occured in region: 2 km NE Arquata del Tronto (AP), on

  • 01-01-2021 20:17:21 (UTC)
  • 01-01-2021 21:17:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7870, 13.3150 at 19 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 2 1178 1178
Montegallo AP 6 523 1701
Acquasanta Terme AP 8 2916 4617
Accumoli RI 12 667 5284
Montemonaco AP 13 604 5888
Roccafluvione AP 16 2010 7898
Valle Castellana TE 16 977 8875
Palmiano AP 17 196 9071
Montefortino FM 18 1178 10249
Amatrice RI 18 2657 12906
Castelsantangelo sul Nera MC 18 281 13187
Venarotta AP 18 2066 15253
Norcia PG 18 4957 20210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Teramo (54892 inhabitants)
49 Km N of L'Aquila (69753 inhabitants)
53 Km E of Foligno (57155 inhabitants)
60 Km E of Terni (111501 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
83 Km E of Perugia (166134 inhabitants)
85 Km NW of Chieti (51815 inhabitants)
94 Km S of Ancona (100861 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
Reviewed
Rev100
ML 1.4 2021-01-01
20:17:21
42.7872 13.3152 19 2021-01-01
20:24:09
Sala Sismica INGV-Roma 85947501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-01 20:17:21 ± 0.08
Latitude 42.7872 ± 0.0027
Longitude 13.3152 ± 0.0061
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85947501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 558
Semi-minor axis of confidence ellipse (meter) 74
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37142
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 85947501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-01 20:24:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PF6.EHN. 2021-01-01T20:17:34.29 0.6 undecidable manual S 346 40.1265 106 -0.21 46
IV.CESI.HHZ. 2021-01-01T20:17:34.68 0.6 undecidable manual S 306 41.2254 105 -0.09 47
IV.CSP1.EHZ. 2021-01-01T20:17:33.01 0.6 undecidable manual S 345 34.9428 109 -0.17 46
IT.MTCL.HGZ. 2021-01-01T20:17:32.91 0.6 undecidable manual S 312 34.4433 109 -0.14 47
IV.FDMO.HHZ. 2021-01-01T20:17:32.78 0.6 undecidable manual S 326 33.2445 110 0.03 49
IV.LNSS.HHZ. 2021-01-01T20:17:32.27 0.6 undecidable manual S 228 30.3474 112 0.25 46
IV.TERO.HHE. 2021-01-01T20:17:31.62 0.6 undecidable manual S 128 29.748 113 -0.27 46
IV.MF5.EHZ. 2021-01-01T20:17:31.39 0.6 undecidable manual S 28 25.1526 118 0.62 43
IV.CAMP.HHE. 2021-01-01T20:17:31.39 0.6 undecidable manual S 165 28.9488 114 -0.29 47
IV.CESI.HHZ. 2021-01-01T20:17:29.02 0.6 positive manual P 306 41.2254 105 0.06 48
IV.MNTT.EHZ. 2021-01-01T20:17:29.11 3.0 negative manual P 0.33 0
IV.T1299.HNE. 2021-01-01T20:17:29.26 0.3 undecidable manual S 189 17.1717 130 0.26 70
IV.NRCA.HHZ. 2021-01-01T20:17:29.00 0.3 undecidable manual S 288 17.1717 131 0.01 75
IV.MC2.EHE. 2021-01-01T20:17:29.15 0.6 undecidable manual S 323 17.1717 130 0.15 49
IV.SMA1.EHZ. 2021-01-01T20:17:28.77 0.6 undecidable manual S 175 17.4714 130 -0.29 48
IV.OFFI.HHZ. 2021-01-01T20:17:28.60 1.0 undecidable manual P 61 34.3434 109 0.65 21
IT.MTCL.HGZ. 2021-01-01T20:17:28.20 0.1 undecidable manual P 312 34.4433 109 0.23 93
IV.PF6.EHN. 2021-01-01T20:17:28.61 0.1 undecidable manual P 346 40.1265 106 -0.2 92
IV.FDMO.HHZ. 2021-01-01T20:17:27.62 0.3 negative manual P 326 33.2445 110 -0.19 70
IV.LNSS.HHZ. 2021-01-01T20:17:27.44 0.1 undecidable manual P 228 30.3474 112 0.06 97
IV.CSP1.EHZ. 2021-01-01T20:17:27.90 0.3 negative manual P 345 34.9428 109 -0.15 70
IV.MTRA.EHZ. 2021-01-01T20:17:27.10 0.6 undecidable manual S 117 7.4814 155 -0.31 48
IV.TERO.HHE. 2021-01-01T20:17:27.59 0.1 undecidable manual P 128 29.748 113 0.29 92
IV.MMO1.EHZ. 2021-01-01T20:17:27.89 0.6 undecidable manual S 4 12.4764 141 -0.23 48
IV.CAMP.HHE. 2021-01-01T20:17:26.89 0.1 undecidable manual P 165 28.9488 114 -0.29 93
IV.MF5.EHZ. 2021-01-01T20:17:26.96 0.6 undecidable manual P 28 25.1526 118 0.3 47
IV.MMO1.EHZ. 2021-01-01T20:17:25.03 0.3 negative manual P 4 12.4764 141 -0.1 74
IV.T1299.HNE. 2021-01-01T20:17:25.77 0.1 undecidable manual P 189 17.1717 130 0.14 97
IV.NRCA.HHZ. 2021-01-01T20:17:25.59 0.1 positive manual P 288 17.1717 131 -0.04 99
IV.MC2.EHE. 2021-01-01T20:17:25.86 0.1 undecidable manual P 323 17.1717 130 0.22 96
IV.SMA1.EHZ. 2021-01-01T20:17:25.66 0.1 negative manual P 175 17.4714 130 -0.01 100
IV.MTRA.EHZ. 2021-01-01T20:17:24.62 0.1 negative manual P 117 7.4814 155 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.6 0.0003175 0.44 AML other m 2021-01-01T20:17:27.23
IV.MTRA.EHN. ML:1.4 0.00023549999999999998 0.24 AML other m 2021-01-01T20:17:27.64
IV.SMA1.EHE. ML:1.3 0.0001205 0.12 AML other m 2021-01-01T20:17:29.30
IV.SMA1.EHN. ML:1.4 0.00014549999999999999 0.28 AML other m 2021-01-01T20:17:29.13
IV.CESI.HHE. ML:1.4 0.00007694999999999999 0.38 AML other m 2021-01-01T20:17:35.54
IV.CESI.HHN. ML:1.3 0.00006355 1.54 AML other m 2021-01-01T20:17:36.94
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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