Earthquake with magnitude of ML 1.5 on date 26-09-2020 and time 21:56:07 (UTC) in region 5 km NE Amatrice (RI)

A magnitude ML 1.5 earthquake occured in region: 5 km NE Amatrice (RI), on

  • 26-09-2020 21:56:07 (UTC)
  • 26-09-2020 23:56:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.66, 13.34 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 5 2657 2657
Accumoli RI 8 667 3324
Campotosto AQ 12 542 3866
Arquata del Tronto AP 13 1178 5044
Acquasanta Terme AP 13 2916 7960
Cortino TE 15 656 8616
Cittareale RI 15 482 9098
Valle Castellana TE 16 977 10075
Rocca Santa Maria TE 16 537 10612
Capitignano AQ 16 665 11277
Montereale AQ 17 2581 13858
Crognaleto TE 18 1297 15155
Montegallo AP 20 523 15678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Teramo (54892 inhabitants)
35 Km N of L'Aquila (69753 inhabitants)
57 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
75 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 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 1.5 2020-09-26
21:56:07
42.66 13.34 11 2020-09-26
22:00:37
Sala Sismica INGV-Roma 83281711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-26 21:56:07 ± 0.06
Latitude 42.66 ± 0.00
Longitude 13.34 ± 0.00
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 83281711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 401
Semi-minor axis of confidence ellipse (meter) 365
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 354
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) 78
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
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) 0.43797
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 83281711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-26 22:00:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-09-26T21:56:23.12 0.6 undecidable manual S 347 0.438 50 0.47 43
IV.ARRO.EHZ. 2020-09-26T21:56:22.61 0.6 undecidable manual S 259 0.4272 50 0.28 45
IV.GAVE.EHZ. 2020-09-26T21:56:19.12 0.6 undecidable manual S 275 0.3256 50 -0.19 47
IV.LNSS.HHZ. 2020-09-26T21:56:16.48 0.6 undecidable manual S 254 0.2257 50 0.13 48
IV.NRCA.HHZ. 2020-09-26T21:56:16.26 0.6 undecidable manual S 316 0.2347 50 -0.36 46
IV.CSP1.EHZ. 2020-09-26T21:56:16.35 1.0 undecidable manual P 347 0.438 50 0.24 23
IV.MMO1.EHZ. 2020-09-26T21:56:16.72 3.0 undecidable manual S -0.07 0
IV.TERO.HHZ. 2020-09-26T21:56:15.49 0.6 undecidable manual S 102 0.2014 50 -0.15 49
IV.ARRO.EHZ. 2020-09-26T21:56:15.69 0.6 undecidable manual P 259 0.4272 50 -0.25 45
IV.GAVE.EHZ. 2020-09-26T21:56:14.07 0.6 negative manual P 275 0.3256 50 -0.12 48
IV.RM33.EHZ. 2020-09-26T21:56:14.95 0.6 undecidable manual S 210 0.179 50 -0.01 50
IV.TERO.HHZ. 2020-09-26T21:56:12.07 0.3 negative manual P 102 0.2014 50 0 75
IV.MTRA.EHZ. 2020-09-26T21:56:12.53 0.6 undecidable manual S 26 0.1025 134 -0.17 49
IV.LNSS.HHZ. 2020-09-26T21:56:12.45 0.1 positive manual P 254 0.2257 50 -0.03 99
IV.NRCA.HHZ. 2020-09-26T21:56:12.50 0.6 negative manual P 316 0.2347 50 -0.13 48
IV.RM33.EHZ. 2020-09-26T21:56:11.76 0.1 positive manual P 210 0.179 50 0.08 99
IV.SMA1.EHZ. 2020-09-26T21:56:11.17 0.6 undecidable manual S 180 0.0333 161 -0.06 51
IV.MTRA.EHZ. 2020-09-26T21:56:10.47 0.1 undecidable manual P 26 0.1025 134 0.09 100
IV.SMA1.EHZ. 2020-09-26T21:56:09.86 1.0 undecidable manual P 180 0.0333 161 0.33 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.6 0.0006315 0.22 AML other m 2020-09-26T21:56:11.69
IV.SMA1.EHN. ML:1.5 0.0005865 0.14 AML other m 2020-09-26T21:56:11.64
IV.MTRA.EHN. ML:1.6 0.0005285 0.12 AML other m 2020-09-26T21:56:12.61
IV.MTRA.HNN. ML:1.6 0.000504 0.12 AML other m 2020-09-26T21:56:12.61
IV.MTRA.EHE. ML:1.6 0.000428 0.48 AML other m 2020-09-26T21:56:12.66
IV.MTRA.HNE. ML:1.6 0.0004705 0.78 AML other m 2020-09-26T21:56:13.66
IV.RM33.EHN. ML:1.2 0.0001217 0.8 AML other m 2020-09-26T21:56:15.10
IV.RM33.EHE. ML:1.3 0.000149 0.18 AML other m 2020-09-26T21:56:15.29
IV.TERO.HHN. ML:1.5 0.0001925 0.3 AML other m 2020-09-26T21:56:15.65
IV.TERO.HHE. ML:1.5 0.0001885 0.34 AML other m 2020-09-26T21:56:15.53
IV.NRCA.HHE. ML:1.2 9.105E-5 0.5 AML other m 2020-09-26T21:56:16.39
IV.NRCA.HHN. ML:1.2 8.855E-5 0.88 AML other m 2020-09-26T21:56:17.11
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