Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 11-11-2021 and time 07:43:27 (UTC) in region 5 km SW Amatrice (RI)

A magnitude ML 1.4 earthquake occured in region: 5 km SW Amatrice (RI), on

  • 11-11-2021 07:43:27 (UTC)
  • 11-11-2021 08:43:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5880, 13.2630 at 13 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
Montereale AQ 7 2581 5238
Capitignano AQ 8 665 5903
Cittareale RI 9 482 6385
Campotosto AQ 9 542 6927
Accumoli RI 12 667 7594
Borbona RI 14 617 8211
Cagnano Amiterno AQ 15 1369 9580
Barete AQ 15 737 10317
Posta RI 15 694 11011
Pizzoli AQ 17 4326 15337
Crognaleto TE 18 1297 16634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
79 Km W of Chieti (51815 inhabitants)
79 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km W of Pescara (121014 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
100 Km NE of Roma (2864731 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 1.4 2021-11-11
07:43:27		 42.5882 13.263 13 2022-03-30
13:04:36		 Bollettino Sismico Italiano INGV 100760601
Reviewed
Rev100 		ML 1.5 2021-11-11
07:43:27		 42.5882 13.2617 13 2021-11-11
07:55:53		 Sala Sismica INGV-Roma 97392251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-11 07:43:27 ± 0.08
Latitude 42.5882 ± 0.0054
Longitude 13.2630 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100760601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 559
Semi-minor axis of confidence ellipse (meter) 73
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 12
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.36602
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 97392251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-11 07:55:53

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 100760601
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-08 09:36:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2021-11-11T07:43:39.10 0.6 undecidable manual S 291 32.2455 96 0.07 49
IV.GIGS.HJZ. 2021-11-11T07:43:38.28 0.6 undecidable manual S 120 29.4483 97 0 49
IV.NRCA.HHZ. 2021-11-11T07:43:38.24 0.6 undecidable manual S 336 29.748 97 -0.14 49
IV.TERO.HHZ. 2021-11-11T07:43:37.95 0.6 undecidable manual S 82 28.0497 97 0.02 49
IV.ARRO.EHN. 2021-11-11T07:43:35.24 0.6 undecidable manual P 269 40.626 94 -0.39 44
IV.LNSS.HHZ. 2021-11-11T07:43:35.20 0.6 undecidable manual S 275 18.2706 107 -0.16 48
IV.MTRA.HNZ. 2021-11-11T07:43:35.97 0.6 undecidable manual S 30 21.6672 102 -0.26 49
IV.NRCA.HHZ. 2021-11-11T07:43:34.06 0.1 positive manual P 336 29.748 97 0.09 96
IV.GAVE.EHZ. 2021-11-11T07:43:34.48 0.3 undecidable manual P 291 32.2455 96 0.14 72
IV.CAMP.HHZ. 2021-11-11T07:43:34.07 0.6 undecidable manual S 116 13.2756 120 -0.06 50
IV.GIGS.HJZ. 2021-11-11T07:43:33.61 0.3 undecidable manual P 120 29.4483 97 -0.3 69
IV.TERO.HHZ. 2021-11-11T07:43:33.87 0.1 undecidable manual P 82 28.0497 97 0.16 96
IV.LNSS.HHZ. 2021-11-11T07:43:32.34 0.1 positive manual P 275 18.2706 107 0.12 99
IV.SMA1.EHZ. 2021-11-11T07:43:32.69 0.6 undecidable manual S 52 7.5813 142 -0.28 49
IV.MTRA.HNZ. 2021-11-11T07:43:32.70 0.3 undecidable manual P 30 21.6672 102 -0.03 75
IV.CAMP.HHZ. 2021-11-11T07:43:31.71 0.1 undecidable manual P 116 13.2756 120 0.19 99
IV.SMA1.EHZ. 2021-11-11T07:43:30.98 0.1 negative manual P 52 7.5813 142 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.7 0.00055023205 0.1408 AML other m 2021-11-11T07:43:33.27
IV.SMA1.EHE. ML:2.0 0.0013417945499999999 0.1792 AML other m 2021-11-11T07:43:32.98
IV.LNSS.HHN. ML:1.3 0.00016168997 0.1984 AML other m 2021-11-11T07:43:35.48
IV.LNSS.HHE. ML:1.5 0.0002273426 0.1984 AML other m 2021-11-11T07:43:35.48
IV.TERO.HHE. ML:1.2 0.0000869134 0.1024 AML other m 2021-11-11T07:43:38.08
IV.TERO.HHN. ML:1.2 0.00007027174999999999 0.096 AML other m 2021-11-11T07:43:38.31
IV.GAVE.EHE. ML:1.4 0.000096896965 0.1984 AML other m 2021-11-11T07:43:39.38
IV.NRCA.HHN. ML:1.4 0.00012412425 0.0832 AML other m 2021-11-11T07:43:39.25
IV.GAVE.EHN. ML:1.3 0.00007918315 0.1984 AML other m 2021-11-11T07:43:39.69
IV.NRCA.HHE. ML:1.4 0.000131 0.12 AML other m 2021-11-11T07:43:39.87
IV.LNSS.HNE. ML:1.4 0.00020498005 0.192 AML other m 2021-11-11T07:43:35.58
IV.LNSS.HNN. ML:1.5 0.000209726915 0.2112 AML other m 2021-11-11T07:43:35.49
IV.TERO.HNE. ML:1.4 0.00012648633000000002 0.1088 AML other m 2021-11-11T07:43:38.14
IV.NRCA.HNE. ML:1.4 0.000119948665 0.1344 AML other m 2021-11-11T07:43:39.88
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