Earthquake with magnitude of ML 1.1 on date 20-02-2020 and time 16:52:19 (Italy) in region 3 km W Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 3 km W Amatrice (RI), on

  • 20-02-2020 15:52:19 (UTC)
  • 20-02-2020 16:52:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.64, 13.25 at 11 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
Amatrice RI 3 2657 2657
Accumoli RI 7 667 3324
Cittareale RI 8 482 3806
Montereale AQ 13 2581 6387
Campotosto AQ 13 542 6929
Capitignano AQ 14 665 7594
Arquata del Tronto AP 16 1178 8772
Borbona RI 17 617 9389
Posta RI 18 694 10083
Acquasanta Terme AP 20 2916 12999
Cagnano Amiterno AQ 20 1369 14368

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
81 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
97 Km E of Viterbo (67173 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 1.1 2020-02-20
15:52:19
42.64 13.25 11 2020-02-20
15:59:24
Sala Sismica INGV-Roma 76674521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-20 15:52:19 ± 0.08
Latitude 42.64 ± 0.00
Longitude 13.25 ± 0.00
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76674521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 395
Semi-minor axis of confidence ellipse (meter) 187
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 400
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 22
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
Epicentral distance of station farthest from the epicenter (degree) 0.27789
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 76674521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-20 15:59:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
XK.GIZZ.HHZ. 2020-02-20T15:54:15.00 3.0 undecidable manual Sn -1.1 0
IV.CTI.HHZ. 2020-02-20T15:54:08.33 3.0 undecidable manual Sg 11.42 0
CR.ZAG.BHZ. 2020-02-20T15:54:04.60 3.0 undecidable manual Sn 3.71 0
IV.FVI.HHZ. 2020-02-20T15:54:02.84 3.0 undecidable manual Sn -3.23 0
IV.RESU.HHZ. 2020-02-20T15:53:51.64 3.0 undecidable manual Pg 16.549999 0
IV.NDIM.HNZ. 2020-02-20T15:53:50.28 3.0 undecidable manual Sg 12.26 0
GU.GSCL.HHZ. 2020-02-20T15:53:36.75 3.0 undecidable manual Sn 4.37 0
IV.JOPP.HHZ. 2020-02-20T15:53:26.34 3.0 undecidable manual Pn -1.55 0
IV.SALB.HHZ. 2020-02-20T15:53:21.98 3.0 positive manual Pg 6.3 0
MN.CUC.HHZ. 2020-02-20T15:53:17.05 3.0 positive manual Pg 6.02 0
IV.SLCN.HHZ. 2020-02-20T15:53:04.78 3.0 undecidable manual Pn -0.73 0
IV.ZCCA.HHZ. 2020-02-20T15:52:56.74 3.0 undecidable manual Pn -0.86 0
IV.PE3.EHZ. 2020-02-20T15:52:56.51 3.0 undecidable manual S -1.69 0
IV.SFI.EHZ. 2020-02-20T15:52:49.47 3.0 negative manual Pg 2.21 0
IV.FOSV.EHZ. 2020-02-20T15:52:31.63 3.0 undecidable manual P -1.94 0
IV.MC2.EHZ. 2020-02-20T15:52:30.73 0.3 undecidable manual S 350 0.2779 91 0.5 65
IV.GAVE.HNZ. 2020-02-20T15:52:29.63 0.6 undecidable manual S 282 0.2698 91 -0.35 46
IV.TERO.HHZ. 2020-02-20T15:52:29.40 0.3 undecidable manual S 93 0.2581 91 -0.24 69
IV.MMO1.HNZ. 2020-02-20T15:52:29.92 0.6 undecidable manual S 12 0.268 91 0 48
IV.NRCA.HNZ. 2020-02-20T15:52:28.21 0.3 undecidable manual S 333 0.2212 92 -0.34 69
IV.CAMP.HHZ. 2020-02-20T15:52:26.65 0.6 undecidable manual S 131 0.1529 95 0.13 49
IV.LNSS.HHZ. 2020-02-20T15:52:26.63 0.3 undecidable manual S 258 0.1601 94 -0.11 73
IV.MTRA.EHZ. 2020-02-20T15:52:26.32 0.3 undecidable manual S 41 0.1592 94 -0.39 69
IV.MMO1.HNZ. 2020-02-20T15:52:26.08 0.1 undecidable manual P 12 0.268 91 0.55 85
IV.MC2.EHZ. 2020-02-20T15:52:25.76 0.1 undecidable manual P 350 0.2779 91 0.05 95
IV.RM33.EHZ. 2020-02-20T15:52:25.95 0.3 undecidable manual S 193 0.1313 101 0.07 74
IV.GAVE.HNZ. 2020-02-20T15:52:25.40 0.1 undecidable manual P 282 0.2698 91 -0.17 94
IV.TERO.HHZ. 2020-02-20T15:52:25.20 0.1 undecidable manual P 93 0.2581 91 -0.17 94
IV.SMA1.EHZ. 2020-02-20T15:52:24.26 0.3 undecidable manual S 96 0.0603 139 0.17 74
IV.NRCA.HNZ. 2020-02-20T15:52:24.62 0.1 undecidable manual P 333 0.2212 92 -0.12 96
IV.RM33.EHZ. 2020-02-20T15:52:23.27 0.1 undecidable manual P 193 0.1313 101 0.07 98
IV.MTRA.EHZ. 2020-02-20T15:52:23.62 0.1 undecidable manual P 41 0.1592 94 -0.05 98
IV.CAMP.HHZ. 2020-02-20T15:52:23.55 0.1 undecidable manual P 131 0.1529 95 -0.01 99
IV.LNSS.HHZ. 2020-02-20T15:52:23.75 0.1 undecidable manual P 258 0.1601 94 0.05 98
IV.T1299.HNZ. 2020-02-20T15:52:23.33 0.3 undecidable manual S 97 0.0216 165 -0.22 72
IV.SMA1.EHZ. 2020-02-20T15:52:22.34 0.1 undecidable manual P 96 0.0603 139 0.17 98
IV.T1299.HNZ. 2020-02-20T15:52:21.97 0.1 undecidable manual P 97 0.0216 165 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.8 0.0008345 0.18 AML other m 2020-02-20T15:52:24.64
IV.SMA1.EHN. ML:1.4 0.00031 1 AML other m 2020-02-20T15:52:25.20
IV.RM33.EHE. ML:1 9.155E-5 0.66 AML other m 2020-02-20T15:52:26.21
IV.MTRA.EHE. ML:1.4 0.000182 0.42 AML other m 2020-02-20T15:52:26.60
IV.LNSS.HHN. ML:1.1 9.935E-5 0.56 AML other m 2020-02-20T15:52:26.69
IV.LNSS.HHE. ML:1.1 9.315E-5 0.16 AML other m 2020-02-20T15:52:26.73
IV.RM33.EHN. ML:0.9 6.86E-5 1.4 AML other m 2020-02-20T15:52:26.29
IV.MTRA.EHN. ML:1.3 0.000144 0.34 AML other m 2020-02-20T15:52:27.22
IV.LNSS.HNE. ML:1 7.9645555E-5 0.32 AML other m 2020-02-20T15:52:26.81
IV.LNSS.HNN. ML:1.4 0.00019132012 1.2672 AML other m 2020-02-20T15:52:26.33
IV.TERO.HHE. ML:0.8 3.142027E-5 0.1408 AML other m 2020-02-20T15:52:29.55
IV.TERO.HHN. ML:0.8 3.575992E-5 0.1664 AML other m 2020-02-20T15:52:30.32
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