Earthquake with magnitude of ML 1.9 on date 18-09-2020 and time 10:41:40 (Italy) in region 2 km W Amatrice (RI)

A magnitude ML 1.9 earthquake occured in region: 2 km W Amatrice (RI), on

  • 18-09-2020 08:41:40 (UTC)
  • 18-09-2020 10:41:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.64, 13.26 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 2 2657 2657
Accumoli RI 7 667 3324
Cittareale RI 9 482 3806
Montereale AQ 12 2581 6387
Campotosto AQ 13 542 6929
Capitignano AQ 13 665 7594
Arquata del Tronto AP 16 1178 8772
Borbona RI 17 617 9389
Posta RI 18 694 10083
Acquasanta Terme AP 19 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)
36 Km W of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
80 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)
98 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
Reviewed
Rev100
ML 1.9 2020-09-18
08:41:40
42.64 13.26 11 2020-09-18
08:51:52
Sala Sismica INGV-Roma 83002241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 08:41:40 ± 0.07
Latitude 42.64 ± 0.00
Longitude 13.26 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83002241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 444
Semi-minor axis of confidence ellipse (meter) 420
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.70237
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 83002241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 08:51:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2020-09-18T08:43:02.63 3.0 undecidable manual Sg 6.56 0
IV.SEI.HHZ. 2020-09-18T08:42:42.09 3.0 undecidable manual Sg 5.19 0
IV.PTRJ.HNZ. 2020-09-18T08:42:26.41 3.0 undecidable manual Sn -0.48 0
IV.IMOL.HNZ. 2020-09-18T08:42:14.00 3.0 negative manual Pn 1.42 0
IV.COR1.EHZ. 2020-09-18T08:42:13.36 3.0 undecidable manual S 0.12 0
IV.EL6.EHZ. 2020-09-18T08:42:03.79 0.3 undecidable manual S 350 0.7024 50 0.4 62
IV.ASSB.HHZ. 2020-09-18T08:42:00.83 0.1 undecidable manual S 313 0.5998 50 0.47 84
IV.APEC.HHZ. 2020-09-18T08:41:59.47 3.0 negative manual P -0.24 0
IV.FAGN.HHZ. 2020-09-18T08:41:56.30 0.1 undecidable manual S 147 0.4398 50 0.69 80
IV.CSP1.EHZ. 2020-09-18T08:41:56.22 0.1 undecidable manual S 355 0.4569 50 0.1 93
IV.CESI.HHZ. 2020-09-18T08:41:56.46 0.3 undecidable manual S 325 0.4515 50 0.5 64
IV.MF5.EHZ. 2020-09-18T08:41:54.71 0.1 undecidable manual S 22 0.3804 50 0.87 75
IV.FDMO.HHZ. 2020-09-18T08:41:54.48 0.1 undecidable manual S 342 0.42 50 -0.54 85
IV.ARRO.EHZ. 2020-09-18T08:41:53.29 0.1 undecidable manual S 261 0.3687 50 -0.22 93
IV.EL6.EHZ. 2020-09-18T08:41:53.58 0.1 undecidable manual P 350 0.7024 50 0.06 89
IV.FIAM.HHZ. 2020-09-18T08:41:53.87 0.1 undecidable manual S 196 0.3831 50 -0.06 96
IV.ASSB.HHZ. 2020-09-18T08:41:51.79 0.6 undecidable manual P 313 0.5998 50 0.03 46
IV.MC2.EHZ. 2020-09-18T08:41:51.31 0.3 undecidable manual S 349 0.2797 50 0.43 68
IV.CESI.HHZ. 2020-09-18T08:41:49.06 0.1 undecidable manual P 325 0.4515 50 -0.17 92
IV.TERO.HHZ. 2020-09-18T08:41:49.07 0.1 undecidable manual S 93 0.2518 50 -0.98 73
IV.CSP1.EHZ. 2020-09-18T08:41:49.21 0.1 positive manual P 355 0.4569 50 -0.11 93
IV.MF5.EHZ. 2020-09-18T08:41:48.39 0.1 negative manual P 22 0.3804 50 0.39 89
IV.FDMO.HHZ. 2020-09-18T08:41:48.39 0.1 undecidable manual P 342 0.42 50 -0.29 90
IV.NRCA.HNZ. 2020-09-18T08:41:48.74 0.1 undecidable manual S 331 0.2248 50 -0.5 90
IV.FAGN.HHZ. 2020-09-18T08:41:48.94 0.1 undecidable manual P 147 0.4398 50 -0.09 94
IV.LNSS.HHZ. 2020-09-18T08:41:47.21 0.1 undecidable manual S 258 0.1664 120 -0.2 97
IV.ARRO.EHZ. 2020-09-18T08:41:47.70 0.1 undecidable manual P 261 0.3687 50 -0.12 95
IV.FIAM.HHZ. 2020-09-18T08:41:47.92 0.1 undecidable manual P 196 0.3831 50 -0.13 94
IV.MC2.EHZ. 2020-09-18T08:41:46.21 0.1 undecidable manual P 349 0.2797 50 -0.08 97
IV.RM33.EHZ. 2020-09-18T08:41:46.31 0.3 undecidable manual S 195 0.1322 126 0 76
IV.CAMP.HHZ. 2020-09-18T08:41:46.72 0.1 undecidable manual S 133 0.1475 123 -0.1 99
IV.MTRA.HNZ. 2020-09-18T08:41:46.54 0.1 undecidable manual S 39 0.1556 122 -0.54 89
IV.TERO.HHZ. 2020-09-18T08:41:45.63 0.1 undecidable manual P 93 0.2518 50 -0.18 96
IV.NRCA.HNZ. 2020-09-18T08:41:45.21 0.1 positive manual P 331 0.2248 50 -0.14 97
IV.CAMP.HHZ. 2020-09-18T08:41:44.01 0.1 undecidable manual P 133 0.1475 123 0.06 100
IV.SMA1.EHZ. 2020-09-18T08:41:44.56 0.1 undecidable manual S 96 0.0549 150 0.28 97
IV.MTRA.HNZ. 2020-09-18T08:41:44.03 0.1 undecidable manual P 39 0.1556 122 -0.07 100
IV.LNSS.HHZ. 2020-09-18T08:41:44.39 0.1 positive manual P 258 0.1664 120 0.1 99
IV.RM33.EHZ. 2020-09-18T08:41:43.89 0.1 positive manual P 195 0.1322 126 0.24 97
IV.SMA1.EHZ. 2020-09-18T08:41:42.87 0.1 negative manual P 96 0.0549 150 0.39 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:2 0.001685 0.18 AML other m 2020-09-18T08:41:44.96
IV.SMA1.EHE. ML:2.2 0.00238 0.26 AML other m 2020-09-18T08:41:45.15
IV.RM33.HNN. ML:2 0.000894 0.7 AML other m 2020-09-18T08:41:46.83
IV.RM33.EHN. ML:2 0.0009175 0.7 AML other m 2020-09-18T08:41:46.83
IV.RM33.HNE. ML:2.1 0.0011485 0.28 AML other m 2020-09-18T08:41:46.56
IV.RM33.EHE. ML:2.1 0.001115 0.3 AML other m 2020-09-18T08:41:46.56
IV.MTRA.HNE. ML:2.4 0.00192 0.44 AML other m 2020-09-18T08:41:46.73
IV.MTRA.EHE. ML:2.4 0.001905 0.44 AML other m 2020-09-18T08:41:46.73
IV.MTRA.EHN. ML:2.2 0.001325 0.88 AML other m 2020-09-18T08:41:46.50
IV.MTRA.HNN. ML:2.2 0.001285 0.42 AML other m 2020-09-18T08:41:46.73
IV.CAMP.HHE. ML:1.4 0.000208 1.72 AML other m 2020-09-18T08:41:47.06
IV.LNSS.HHN. ML:1.6 0.000323 0.6 AML other m 2020-09-18T08:41:48.05
IV.CAMP.HHN. ML:1.5 0.000302 0.28 AML other m 2020-09-18T08:41:48.12
IV.LNSS.HHE. ML:1.6 0.0003225 0.1 AML other m 2020-09-18T08:41:48.15
IV.NRCA.HHN. ML:2.3 0.0010595 0.38 AML other m 2020-09-18T08:41:49.37
IV.NRCA.HNN. ML:2.2 0.00103 0.4 AML other m 2020-09-18T08:41:49.18
IV.NRCA.HHE. ML:2.4 0.001565 0.14 AML other m 2020-09-18T08:41:49.24
IV.NRCA.HNE. ML:2.4 0.00144 0.14 AML other m 2020-09-18T08:41:49.24
IV.TERO.HHE. ML:1.6 0.0002245 0.5 AML other m 2020-09-18T08:41:50.61
IV.TERO.HHN. ML:1.7 0.0002365 1.12 AML other m 2020-09-18T08:41:51.63
IV.FDMO.HHN. ML:1.5 9.49E-5 0.34 AML other m 2020-09-18T08:41:55.65
IV.ARRO.EHE. ML:1.3 6.025E-5 0.16 AML other m 2020-09-18T08:41:55.82
IV.ARRO.EHN. ML:1.4 8.42E-5 1.26 AML other m 2020-09-18T08:41:56.90
IV.FDMO.HHE. ML:1.5 8.825E-5 0.24 AML other m 2020-09-18T08:41:56.68
IV.CESI.HHN. ML:2 0.0002365 0.26 AML other m 2020-09-18T08:41:57.41
IV.CSP1.EHE. ML:2 0.000233 0.26 AML other m 2020-09-18T08:41:57.65
IV.FAGN.HHE. ML:1.8 0.00017 0.62 AML other m 2020-09-18T08:41:57.67
IV.FAGN.HHN. ML:1.7 0.000147 0.44 AML other m 2020-09-18T08:41:57.74
IV.CSP1.EHN. ML:2 0.0002545 1.04 AML other m 2020-09-18T08:41:58.71
IV.CESI.HHE. ML:1.6 0.00010495 0.28 AML other m 2020-09-18T08:41:58.48
IV.APEC.HHN. ML:2.3 0.0001355 0.64 AML other m 2020-09-18T08:42:14.60
IV.APEC.HHE. ML:2.3 0.0001305 0.62 AML other m 2020-09-18T08:42:15.68
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