Earthquake with magnitude of ML 0.4 on date 21-03-2020 and time 06:02:30 (UTC) in region 4 km W Arquata del Tronto (AP)

A magnitude ML 0.4 earthquake occured in region: 4 km W Arquata del Tronto (AP), on

  • 21-03-2020 06:02:30 (UTC)
  • 21-03-2020 07:02:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7690, 13.2460 at 12 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 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 16 2657 12898
Castelsantangelo sul Nera MC 16 281 13179
Montemonaco AP 16 604 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)
79 Km E of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
97 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
Reviewed
Rev100
ML 0.4 2020-03-21
06:02:30
42.7687 13.2463 12 2020-03-21
06:09:50
Sala Sismica INGV-Roma 77429531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-21 06:02:30 ± 0.07
Latitude 42.7687 ± 0.0027
Longitude 13.2463 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77429531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 406
Semi-minor axis of confidence ellipse (meter) 181
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
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) 82
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32466
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77429531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-21 06:09:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RMP.HHZ. 2020-03-21T06:03:03.87 3.0 undecidable manual S -0.33 0
IV.FOSV.EHZ. 2020-03-21T06:02:44.37 3.0 undecidable manual P 0.79 0
IV.CSP1.EHZ. 2020-03-21T06:02:42.42 0.3 undecidable manual S 355 36.0417 92 -0.14 70
IV.FDMO.HHZ. 2020-03-21T06:02:41.27 0.3 undecidable manual S 337 32.4453 93 -0.33 67
IV.TERO.HHZ. 2020-03-21T06:02:41.50 0.3 undecidable manual S 119 33.3444 93 -0.35 68
IV.MF5.EHZ. 2020-03-21T06:02:41.57 0.6 undecidable manual S 35 29.8479 93 0.65 41
IV.RM33.EHZ. 2020-03-21T06:02:40.38 0.6 undecidable manual S 185 28.9488 93 -0.29 46
IV.LNSS.HNE. 2020-03-21T06:02:39.57 0.3 undecidable manual S 222 24.9528 95 -0.04 74
IV.MMO1.EHE. 2020-03-21T06:02:37.26 0.6 undecidable manual S 24 15.873 105 0.03 50
IV.CSP1.EHZ. 2020-03-21T06:02:37.24 0.3 undecidable manual P 355 36.0417 92 -0.22 69
IV.MC2.EHZ. 2020-03-21T06:02:37.52 0.3 undecidable manual S 344 16.4724 103 0.14 73
IV.SMA1.EHZ. 2020-03-21T06:02:37.50 0.3 undecidable manual S 155 16.9719 102 0 74
IV.TERO.HHZ. 2020-03-21T06:02:36.80 0.1 undecidable manual P 119 33.3444 93 -0.25 93
IV.MF5.EHZ. 2020-03-21T06:02:36.79 0.3 undecidable manual P 35 29.8479 93 0.28 69
IV.NRCA.HHZ. 2020-03-21T06:02:36.42 0.3 undecidable manual S 304 12.9759 115 -0.06 73
IV.RM33.EHZ. 2020-03-21T06:02:36.86 0.1 undecidable manual P 185 28.9488 93 0.49 87
IV.FDMO.HHZ. 2020-03-21T06:02:36.65 0.3 undecidable manual P 337 32.4453 93 -0.25 69
IV.MTRA.EHE. 2020-03-21T06:02:36.32 0.3 undecidable manual S 96 12.2766 117 -0.01 75
IV.LNSS.HNE. 2020-03-21T06:02:35.71 0.3 undecidable manual P 222 24.9528 95 -0.04 73
IV.MC2.EHZ. 2020-03-21T06:02:34.57 0.1 undecidable manual P 344 16.4724 103 0.1 98
IV.SMA1.EHZ. 2020-03-21T06:02:34.61 0.1 undecidable manual P 155 16.9719 102 0.07 97
IV.MMO1.EHE. 2020-03-21T06:02:34.40 0.1 undecidable manual P 24 15.873 105 0.02 100
IV.MTRA.EHE. 2020-03-21T06:02:33.94 0.3 undecidable manual P 96 12.2766 117 0.08 74
IV.NRCA.HHZ. 2020-03-21T06:02:33.98 0.1 undecidable manual P 304 12.9759 115 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.3 0.000013983265 0.0992 AML other m 2020-03-21T06:02:38.26
IV.SMA1.EHN. ML:0.1 0.000012282939999999998 0.1408 AML other m 2020-03-21T06:02:37.68
IV.FDMO.HHE. ML:0.4 0.000011425444999999999 0.1184 AML other m 2020-03-21T06:02:41.87
IV.FDMO.HHN. ML:0.5 0.000014912629999999999 0.2816 AML other m 2020-03-21T06:02:41.77
IV.RM33.EHE. ML:0.3 0.000008439579 0.2176 AML other m 2020-03-21T06:02:40.88
IV.RM33.EHN. ML:0.5 0.000015311660000000002 0.2016 AML other m 2020-03-21T06:02:40.86
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