Earthquake with magnitude of ML 1.2 on date 21-02-2020 and time 21:00:06 (UTC) in region 9 km NW Arquata del Tronto (AP)

A magnitude ML 1.2 earthquake occured in region: 9 km NW Arquata del Tronto (AP), on

  • 21-02-2020 21:00:06 (UTC)
  • 21-02-2020 22:00:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.22 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 9 1178 1178
Castelsantangelo sul Nera MC 9 281 1459
Montegallo AP 9 523 1982
Norcia PG 11 4957 6939
Montemonaco AP 12 604 7543
Ussita MC 14 444 7987
Accumoli RI 15 667 8654
Visso MC 16 1107 9761
Preci PG 16 724 10485
Montefortino FM 16 1178 11663
Acquasanta Terme AP 17 2916 14579
Bolognola MC 18 142 14721

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
44 Km E of Foligno (57155 inhabitants)
55 Km N of L'Aquila (69753 inhabitants)
56 Km NE of Terni (111501 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
91 Km S of Ancona (100861 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.2 2020-02-21
21:00:06
42.83 13.22 9 2020-02-21
21:07:22
Sala Sismica INGV-Roma 76706151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-21 21:00:06 ± 0.05
Latitude 42.83 ± 0.00
Longitude 13.22 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76706151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 315
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35973
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 76706151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-21 21:07:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2020-02-21T21:00:28.25 3.0 undecidable manual S 0
IV.EL6.EHZ. 2020-02-21T21:00:26.45 3.0 undecidable manual S 0.57 0
IV.TERO.HHZ. 2020-02-21T21:00:20.12 0.1 undecidable manual S 126 0.3489 50 0 96
IV.RM33.EHZ. 2020-02-21T21:00:19.62 0.3 undecidable manual S 181 0.3202 50 0.35 67
IV.GAVE.EHZ. 2020-02-21T21:00:18.21 0.1 undecidable manual S 240 0.2761 50 0.26 92
IV.FOSV.EHZ. 2020-02-21T21:00:18.56 3.0 undecidable manual P 0
IV.CESI.HHZ. 2020-02-21T21:00:18.75 0.1 undecidable manual S 307 0.2905 50 0.38 89
IV.GUMA.HHZ. 2020-02-21T21:00:17.51 0.3 undecidable manual S 20 0.2473 109 0.52 65
IV.CSP1.EHZ. 2020-02-21T21:00:17.85 0.1 undecidable manual S 357 0.2626 108 0.32 91
IV.LNSS.HNZ. 2020-02-21T21:00:17.90 0.3 undecidable manual S 210 0.2626 108 0.36 68
IV.EL6.. 2020-02-21T21:00:17.47 3.0 undecidable manual P 0
IV.FDMO.HHZ. 2020-02-21T21:00:16.67 0.6 undecidable manual S 335 0.2284 110 0.37 45
IT.MTCL.HGZ. 2020-02-21T21:00:16.33 0.3 undecidable manual S 315 0.2302 110 -0.05 73
IV.MTRA.EHZ. 2020-02-21T21:00:14.05 0.1 undecidable manual S 119 0.1484 120 0.57 87
IV.TERO.HHZ. 2020-02-21T21:00:14.17 0.1 undecidable manual P 126 0.3489 50 -0.37 89
IV.MNTT.EHZ. 2020-02-21T21:00:14.25 0.1 undecidable manual P 50 0.3597 50 -0.47 87
IV.CESI.HHZ. 2020-02-21T21:00:13.38 0.1 undecidable manual P 307 0.2905 50 -0.15 94
IV.RM33.EHZ. 2020-02-21T21:00:13.96 0.1 undecidable manual P 181 0.3202 50 -0.09 95
IV.GAVE.EHZ. 2020-02-21T21:00:13.05 0.1 undecidable manual P 240 0.2761 50 -0.24 92
IV.LNSS.HNZ. 2020-02-21T21:00:12.87 0.1 undecidable manual P 210 0.2626 108 -0.18 94
IV.GUMA.HHZ. 2020-02-21T21:00:12.81 0.1 undecidable manual P 20 0.2473 109 0.08 96
IV.FDMO.HHZ. 2020-02-21T21:00:12.17 0.1 undecidable manual P 335 0.2284 110 -0.17 95
IV.CSP1.EHZ. 2020-02-21T21:00:12.80 0.1 undecidable manual P 357 0.2626 108 -0.25 93
IV.MF5.EHZ. 2020-02-21T21:00:12.71 0.1 undecidable manual P 48 0.2356 110 0.22 94
IT.MTCL.HGZ. 2020-02-21T21:00:12.44 0.1 undecidable manual P 315 0.2302 110 0.06 97
IV.MMO1.EHZ. 2020-02-21T21:00:11.92 0.1 undecidable manual S 48 0.1043 129 -0.16 97
IV.T1299.HNZ. 2020-02-21T21:00:11.85 0.1 undecidable manual P 167 0.2005 113 0.1 97
IV.NRCA.HHZ. 2020-02-21T21:00:11.18 0.1 undecidable manual S 273 0.0782 137 -0.16 98
IV.MC2.EHZ. 2020-02-21T21:00:11.41 0.1 undecidable manual S 344 0.0845 135 -0.11 98
IV.SMA1.EHZ. 2020-02-21T21:00:11.87 0.1 undecidable manual P 157 0.2158 111 -0.21 94
IV.MTRA.EHZ. 2020-02-21T21:00:10.76 0.1 undecidable manual P 119 0.1484 120 0.05 99
IV.MC2.EHZ. 2020-02-21T21:00:09.54 0.1 undecidable manual P 344 0.0845 135 -0.04 100
IV.MMO1.EHZ. 2020-02-21T21:00:09.69 0.1 undecidable manual P 48 0.1043 129 -0.21 96
IV.NRCA.HHZ. 2020-02-21T21:00:09.35 0.1 undecidable manual P 273 0.0782 137 -0.12 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHE. ML:1.6 0.0001925 0.3 AML other m 2020-02-21T21:00:22.81
IV.NRCA.HNN. ML:2.1 0.00188 0.12 AML other m 2020-02-21T21:00:11.46
IV.NRCA.HHE. ML:2.1 0.001725 0.18 AML other m 2020-02-21T21:00:11.34
IV.NRCA.HNE. ML:2 0.00153 0.18 AML other m 2020-02-21T21:00:11.34
IV.MTRA.EHN. ML:1.3 0.000172 0.44 AML other m 2020-02-21T21:00:14.47
IV.MTRA.EHE. ML:1.4 0.000241 1.46 AML other m 2020-02-21T21:00:15.91
IV.FDMO.HHE. ML:1.2 8.775E-5 1.56 AML other m 2020-02-21T21:00:18.93
IV.FDMO.HHN. ML:1.1 7.8E-5 0.6 AML other m 2020-02-21T21:00:18.55
IV.GAVE.EHE. ML:1.2 8.31E-5 0.92 AML other m 2020-02-21T21:00:19.67
IV.CESI.HHN. ML:1.5 0.00014 0.42 AML other m 2020-02-21T21:00:19.28
IV.GUMA.HHN. ML:1.7 0.000296 0.34 AML other m 2020-02-21T21:00:19.14
IV.TERO.HHE. ML:1 3.875E-5 0.42 AML other m 2020-02-21T21:00:20.32
IV.GAVE.EHN. ML:1.3 9.225E-5 0.3 AML other m 2020-02-21T21:00:20.32
IV.CESI.HHE. ML:1.2 6.44E-5 1.48 AML other m 2020-02-21T21:00:20.15
IV.TERO.HHN. ML:1 3.255E-5 1.54 AML other m 2020-02-21T21:00:21.13
IV.RM33.EHE. ML:1.1 4.85E-5 0.44 AML other m 2020-02-21T21:00:21.77
IV.RM33.EHN. ML:1 4.32E-5 0.28 AML other m 2020-02-21T21:00:21.71
IV.SMA1.EHN. ML:1.3 0.0001245 0.54 AML other m 2020-02-21T21:00:22.71
IV.SMA1.EHE. ML:1.2 9.825E-5 0.58 AML other m 2020-02-21T21:00:23.36
IV.CSP1.EHE. ML:1 5.159247E-5 0.4096 AML other m 2020-02-21T21:00:18.16
IV.CSP1.EHN. ML:1.2 8.4385395E-5 1.1008 AML other m 2020-02-21T21:00:18.51
IV.EL6.EHE. ML:1.2 3.9086075E-5 0.2048 AML other m 2020-02-21T21:00:28.74
IV.EL6.EHN. ML:1.4 5.0632905E-5 0.2048 AML other m 2020-02-21T21:00:27.80
IV.FOSV.EHE. ML:0.9 1.5953721E-5 0.4224 AML other m 2020-02-21T21:00:32.36
IV.FOSV.EHN. ML:1.3 3.603299E-5 0.2816 AML other m 2020-02-21T21:00:28.58
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download