Earthquake with magnitude of ML 1.0 on date 18-09-2020 and time 09:53:41 (Italy) in region 3 km SW Amatrice (RI)

A magnitude ML 1.0 earthquake occured in region: 3 km SW Amatrice (RI), on

  • 18-09-2020 07:53:41 (UTC)
  • 18-09-2020 09:53:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.61, 13.28 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
Amatrice RI 3 2657 2657
Campotosto AQ 9 542 3199
Montereale AQ 10 2581 5780
Cittareale RI 10 482 6262
Capitignano AQ 10 665 6927
Accumoli RI 10 667 7594
Borbona RI 16 617 8211
Cagnano Amiterno AQ 17 1369 9580
Barete AQ 17 737 10317
Posta RI 18 694 11011
Crognaleto TE 18 1297 12308
Arquata del Tronto AP 18 1178 13486
Cortino TE 19 656 14142
Pizzoli AQ 19 4326 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
78 Km W of Pescara (121014 inhabitants)
78 Km W of Chieti (51815 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
99 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 1.0 2020-09-18
07:53:41
42.61 13.28 12 2020-09-18
08:01:17
Sala Sismica INGV-Roma 83001731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 07:53:41 ± 0.12
Latitude 42.61 ± 0.00
Longitude 13.28 ± 0.01
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 83001731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 470
Semi-minor axis of confidence ellipse (meter) 390
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.29498
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 83001731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 08:01:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2020-09-18T07:55:28.11 3.0 undecidable manual Sn 1.23 0
IV.SARZ.HHZ. 2020-09-18T07:55:24.57 3.0 undecidable manual Sn -2.52 0
IV.SALB.HHZ. 2020-09-18T07:55:10.18 3.0 undecidable manual Sg 16.41 0
MN.VLC.HHZ. 2020-09-18T07:55:08.35 3.0 undecidable manual Sg 11.7 0
IV.PANTE.HHZ. 2020-09-18T07:54:58.96 3.0 undecidable manual Pn 0.46 0
AC.VLO.HHZ. 2020-09-18T07:54:53.80 3.0 undecidable manual Pg 21.93 0
IV.NOCI.HHZ. 2020-09-18T07:54:51.69 3.0 undecidable manual Sg 9.38 0
IV.ZONE.HHZ. 2020-09-18T07:54:49.59 3.0 negative manual Pg 17.860001 0
IV.RAFF.HHZ. 2020-09-18T07:54:47.43 3.0 negative manual Pn -1.05 0
GU.CANO.HHZ. 2020-09-18T07:54:41.40 3.0 undecidable manual Pn 3.31 0
IV.RESU.HHZ. 2020-09-18T07:54:37.84 3.0 negative manual Pn -5.01 0
IV.CMPR.HHZ. 2020-09-18T07:54:35.41 3.0 undecidable manual Sn -2.11 0
IV.MCIV.CHZ. 2020-09-18T07:54:30.68 3.0 undecidable manual Sg 3.09 0
XK.GIZZ.HHZ. 2020-09-18T07:54:28.22 3.0 negative manual Pn 1.12 0
GU.GSCL.HHZ. 2020-09-18T07:54:19.14 3.0 negative manual Pn 2.09 0
IV.CELI.HHZ. 2020-09-18T07:54:18.39 3.0 undecidable manual Pn -4.38 0
MN.VLC.HHZ. 2020-09-18T07:54:15.18 3.0 undecidable manual Pn -2.59 0
GU.POPM.HHZ. 2020-09-18T07:54:13.11 3.0 undecidable manual Pn -0.69 0
IV.ARCI.HNZ. 2020-09-18T07:54:12.38 3.0 undecidable manual Pg 8.95 0
IV.LRP.EHZ. 2020-09-18T07:54:10.63 3.0 undecidable manual Sg 1.15 0
IV.CIGN.HHZ. 2020-09-18T07:54:08.89 3.0 undecidable manual Sg 3.93 0
IV.VIVA.HHZ. 2020-09-18T07:53:57.17 3.0 undecidable manual Pg 1.48 0
IV.NRCA.HHZ. 2020-09-18T07:53:51.77 0.6 undecidable manual S 332 0.2554 94 -0.1 48
IV.CIMA.HNZ. 2020-09-18T07:53:50.19 3.0 undecidable manual Pg 5.83 0
IV.LNSS.HHZ. 2020-09-18T07:53:49.49 0.6 undecidable manual S 268 0.1763 99 -0.04 50
IV.MTRA.HNE. 2020-09-18T07:53:49.08 0.6 undecidable manual S 30 0.1709 100 -0.31 47
IV.CIGN.HHZ. 2020-09-18T07:53:49.28 3.0 positive manual P 0.55 0
IV.GAVE.EHZ. 2020-09-18T07:53:48.14 0.6 positive manual P 287 0.295 93 -0.17 47
IV.CAMP.HHZ. 2020-09-18T07:53:47.85 0.6 undecidable manual S 127 0.1196 114 -0.08 50
IV.NRCA.HHZ. 2020-09-18T07:53:47.87 0.3 negative manual P 332 0.2554 94 0.24 71
IV.RM33.EHZ. 2020-09-18T07:53:47.50 0.6 undecidable manual S 206 0.1106 118 -0.18 49
IV.LNSS.HHZ. 2020-09-18T07:53:46.29 1.0 undecidable manual P 268 0.1763 99 0.01 25
IV.SMA1.EHZ. 2020-09-18T07:53:46.20 0.6 undecidable manual S 62 0.0468 150 -0.12 50
IV.MTRA.HNE. 2020-09-18T07:53:46.19 0.1 undecidable manual P 30 0.1709 100 0 100
IV.RM33.EHZ. 2020-09-18T07:53:45.31 1.0 undecidable manual P 206 0.1106 118 0.1 25
IV.CAMP.HHZ. 2020-09-18T07:53:45.39 1.0 undecidable manual P 127 0.1196 114 0.04 25
IV.SMA1.EHZ. 2020-09-18T07:53:44.71 0.1 positive manual P 62 0.0468 150 0.28 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.6 0.000610849 0.416 AML other m 2020-09-18T07:53:46.36
IV.SMA1.EHN. ML:1.3 0.00026141505 0.1408 AML other m 2020-09-18T07:53:46.45
IV.RM33.HNE. ML:1.1 0.000136784395 0.8832 AML other m 2020-09-18T07:53:56.65
IV.RM33.HNN. ML:1 0.00010649259 0.7808 AML other m 2020-09-18T07:53:54.73
IV.RM33.EHE. ML:0.9 7.866602E-5 0.3008 AML other m 2020-09-18T07:53:47.81
IV.RM33.EHN. ML:0.8 6.853674E-5 0.1408 AML other m 2020-09-18T07:53:47.89
IV.LNSS.HHE. ML:0.8 3.810954E-5 0.1408 AML other m 2020-09-18T07:53:49.69
IV.LNSS.HHN. ML:0.7 3.5938585E-5 0.1408 AML other m 2020-09-18T07:53:49.81
IV.NRCA.HNN. ML:1.5 0.0001639915 0.8512 AML other m 2020-09-18T07:53:51.47
IV.NRCA.HHE. ML:1 5.459465E-5 0.1408 AML other m 2020-09-18T07:53:52.07
IV.NRCA.HHN. ML:1 5.1667865E-5 0.096 AML other m 2020-09-18T07:53:52.57
IV.GAVE.EHE. ML:1 4.2679675E-5 0.16 AML other m 2020-09-18T07:53:53.67
IV.GAVE.EHN. ML:0.9 3.535216E-5 0.1024 AML other m 2020-09-18T07:53:54.03
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