Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 26-09-2020 and time 23:56:07 (Italy) 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) 42.6600, 13.3290 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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 14 2916 7960
Cittareale RI 15 482 8442
Cortino TE 15 656 9098
Capitignano AQ 16 665 9763
Valle Castellana TE 16 977 10740
Montereale AQ 17 2581 13321
Rocca Santa Maria TE 17 537 13858
Crognaleto TE 18 1297 15155

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 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)
76 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2020-09-26
21:56:07		 42.66 13.3293 11 2021-02-26
14:56:00		 Bollettino Sismico Italiano INGV 83945471
Reviewed
Rev100 		ML 1.5 2020-09-26
21:56:07		 42.6642 13.3353 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 42.6600 ± 0.0036
Longitude 13.3293 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83945471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 428
Semi-minor axis of confidence ellipse (meter) 421
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 113
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 33
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57557
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 19
Magnitudes 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

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 83945471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-20 07:15:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HNZ. 2020-09-26T21:56:27.43 0.6 undecidable manual S 285 63.8916 50 0.53 42
IV.CSP1.EHZ. 2020-09-26T21:56:23.12 0.6 undecidable manual S 348 48.9177 50 0.2 46
IV.ARRO.EHZ. 2020-09-26T21:56:22.61 0.6 undecidable manual S 259 46.9197 50 0.25 46
IV.FIAM.HNN. 2020-09-26T21:56:22.55 0.6 undecidable manual S 202 46.8198 50 0.2 46
IV.MF5.EHN. 2020-09-26T21:56:20.69 0.6 undecidable manual S 16 37.8288 50 0.73 40
IV.GAVE.EHZ. 2020-09-26T21:56:19.12 0.6 undecidable manual S 276 35.6421 50 -0.25 47
IV.MOMA.HNZ. 2020-09-26T21:56:18.67 0.6 undecidable manual P 285 63.8916 50 0.06 46
IV.VCEL.EHN. 2020-09-26T21:56:17.71 0.6 undecidable manual P 125 51.1155 50 1.06 34
IV.GIGS.HHN. 2020-09-26T21:56:17.49 0.6 undecidable manual S 139 30.3474 50 -0.46 45
IV.MMO1.EHZ. 2020-09-26T21:56:16.72 3.0 undecidable manual S -0.07 0
IV.FDMO.HHN. 2020-09-26T21:56:16.05 0.6 undecidable manual P 335 46.2204 50 0.16 47
IV.LNSS.HHZ. 2020-09-26T21:56:16.48 0.6 undecidable manual S 255 24.4533 50 0.11 49
IV.FIAM.HNN. 2020-09-26T21:56:16.00 0.6 undecidable manual P 202 46.8198 50 0.02 48
IV.NRCA.HHZ. 2020-09-26T21:56:16.26 0.6 undecidable manual S 318 26.0517 50 -0.53 44
IV.CSP1.EHZ. 2020-09-26T21:56:16.35 0.6 undecidable manual P 348 48.9177 50 0.04 48
IV.CESI.HHE. 2020-09-26T21:56:16.32 0.6 undecidable manual P 318 51.5151 50 -0.39 44
IV.OFFI.HHE. 2020-09-26T21:56:15.91 0.6 undecidable manual P 43 42.1245 50 0.65 41
IV.TERO.HHZ. 2020-09-26T21:56:15.49 0.6 undecidable manual S 100 22.755 50 -0.43 46
IV.ARRO.EHZ. 2020-09-26T21:56:15.69 0.3 undecidable manual P 259 46.9197 50 -0.3 68
IV.RM33.EHZ. 2020-09-26T21:56:14.95 0.6 undecidable manual S 209 19.1697 119 0.03 50
IV.GAVE.EHZ. 2020-09-26T21:56:14.00 0.3 undecidable manual P 276 35.6421 50 -0.26 70
IV.MF5.EHN. 2020-09-26T21:56:14.89 0.6 undecidable manual P 16 37.8288 50 0.29 46
IV.GIGS.HHN. 2020-09-26T21:56:13.27 0.6 undecidable manual P 139 30.3474 50 -0.17 48
IV.CAMP.HHE. 2020-09-26T21:56:13.66 0.3 undecidable manual S 155 15.2736 125 -0.1 75
IV.MC2.EHZ. 2020-09-26T21:56:13.35 0.6 undecidable manual P 338 30.1476 50 -0.06 49
IV.NRCA.HHZ. 2020-09-26T21:56:12.47 0.3 undecidable manual P 318 26.0517 50 -0.31 70
IV.TERO.HHZ. 2020-09-26T21:56:12.08 0.3 undecidable manual P 100 22.755 50 -0.2 72
IV.MTRA.EHZ. 2020-09-26T21:56:12.53 0.3 undecidable manual S 27 12.0768 132 -0.35 71
IV.LNSS.HHZ. 2020-09-26T21:56:12.45 0.1 positive manual P 255 24.4533 50 -0.08 99
IV.RM33.EHZ. 2020-09-26T21:56:11.76 0.1 positive manual P 209 19.1697 119 0.06 100
IV.SMA1.EHZ. 2020-09-26T21:56:11.17 0.6 undecidable manual S 172 3.2967 163 0 52
IV.CAMP.HHE. 2020-09-26T21:56:11.10 0.3 undecidable manual P 155 15.2736 125 0.08 75
IV.MTRA.EHZ. 2020-09-26T21:56:10.47 0.3 undecidable manual P 27 12.0768 132 -0.05 76
IV.SMA1.EHZ. 2020-09-26T21:56:09.86 0.1 positive manual P 172 3.2967 163 0.32 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.6 0.0006314999999999999 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:1.7 0.0005285 0.12 AML other m 2020-09-26T21:56:12.61
IV.MTRA.HNN. ML:1.7 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 0.00047050000000000005 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 0.00019250000000000002 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 0.00009104999999999999 0.5 AML other m 2020-09-26T21:56:16.39
IV.NRCA.HHN. ML:1.2 0.00008855 0.88 AML other m 2020-09-26T21:56:17.11
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download