Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 11-03-2021 and time 00:55:14 (UTC) in region 4 km SE Amatrice (RI)

A magnitude ML 1.3 earthquake occured in region: 4 km SE Amatrice (RI), on

  • 11-03-2021 00:55:14 (UTC)
  • 11-03-2021 01:55:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6000, 13.3120 at 12 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 4 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 9 665 3864
Montereale AQ 10 2581 6445
Accumoli RI 12 667 7112
Cittareale RI 13 482 7594
Crognaleto TE 15 1297 8891
Cortino TE 16 656 9547
Barete AQ 17 737 10284
Cagnano Amiterno AQ 17 1369 11653
Borbona RI 18 617 12270
Pizzoli AQ 18 4326 16596
Fano Adriano TE 19 296 16892
Arquata del Tronto AP 19 1178 18070
Posta RI 20 694 18764

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
76 Km W of Chieti (51815 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
94 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 1.3 2021-03-11
00:55:14		 42.6003 13.3115 12 2021-07-12
16:55:01		 Bollettino Sismico Italiano INGV 88032981
Reviewed
Rev100 		ML 1.3 2021-03-11
00:55:14		 42.6053 13.3065 11 2021-03-11
01:04:12		 Sala Sismica INGV-Roma 87984311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 00:55:14 ± 0.05
Latitude 42.6003 ± 0.0036
Longitude 13.3115 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88032981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 379
Semi-minor axis of confidence ellipse (meter) 53
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 32
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.03507
Epicentral distance of station farthest from the epicenter (degree) 0.49732
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 88032981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-12 10:57:24

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 87984311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 01:04:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-03-11T00:55:32.07 0.3 undecidable manual S 351 55.2003 91 0.27 65
IV.FDMO.HHZ. 2021-03-11T00:55:31.17 0.3 undecidable manual S 339 51.7038 91 0.3 65
IV.MMO1.EHZ. 2021-03-11T00:55:26.06 0.3 undecidable manual S 2 33.2445 92 0.13 70
IV.GAVE.EHZ. 2021-03-11T00:55:26.34 0.3 undecidable manual S 287 35.5422 91 -0.21 71
IV.MC2.EHZ. 2021-03-11T00:55:26.56 0.3 undecidable manual S 344 35.9418 91 -0.1 72
IV.NRCA.HHZ. 2021-03-11T00:55:24.99 0.3 undecidable manual S 328 30.4473 92 -0.21 72
IV.FDMO.HHZ. 2021-03-11T00:55:24.12 0.3 undecidable manual P 339 51.7038 91 0.12 68
IV.CSP1.EHZ. 2021-03-11T00:55:24.72 0.1 undecidable manual P 351 55.2003 91 0.18 89
IV.GIGS.HJZ. 2021-03-11T00:55:24.24 0.3 undecidable manual S 127 26.8509 92 0 72
IV.MF5.EHZ. 2021-03-11T00:55:23.25 0.3 undecidable manual P 16 44.622 91 0.34 66
IV.TERO.HHZ. 2021-03-11T00:55:23.28 0.3 undecidable manual S 84 23.9538 93 -0.2 70
IV.LNSS.HHZ. 2021-03-11T00:55:22.72 0.3 undecidable manual S 271 22.1556 94 -0.26 71
IV.GAVE.EHZ. 2021-03-11T00:55:21.28 0.3 undecidable manual P 287 35.5422 91 -0.22 70
IV.MC2.EHZ. 2021-03-11T00:55:21.37 0.3 undecidable manual P 344 35.9418 91 -0.19 70
IV.MTRA.EHZ. 2021-03-11T00:55:21.62 0.3 undecidable manual S 22 18.6702 96 -0.44 69
IV.MMO1.EHZ. 2021-03-11T00:55:21.25 0.1 undecidable manual P 2 33.2445 92 0.11 94
IV.CAMP.HHZ. 2021-03-11T00:55:20.01 0.3 undecidable manual S 132 10.6782 121 -0.02 73
IV.NRCA.HHZ. 2021-03-11T00:55:20.72 0.1 undecidable manual P 328 30.4473 92 0 96
MN.AQU.HNZ. 2021-03-11T00:55:20.78 0.3 undecidable manual P 164 28.3494 92 0.38 68
IV.RM33.EHZ. 2021-03-11T00:55:20.45 0.3 undecidable manual S 218 12.876 111 -0.09 73
IV.LNSS.HHZ. 2021-03-11T00:55:19.47 0.1 undecidable manual P 271 22.1556 94 0.03 97
IV.TERO.HHZ. 2021-03-11T00:55:19.84 0.1 undecidable manual P 84 23.9538 93 0.11 97
IV.GIGS.HJZ. 2021-03-11T00:55:19.78 0.3 undecidable manual P 127 26.8509 92 -0.39 67
IV.RM33.EHZ. 2021-03-11T00:55:18.19 0.1 undecidable manual P 218 12.876 111 0.16 98
IV.T1299.HNZ. 2021-03-11T00:55:18.48 0.3 undecidable manual S 328 4.4955 153 -0.4 70
IV.SMA1.EHZ. 2021-03-11T00:55:18.78 0.3 undecidable manual S 30 3.8961 156 -0.04 75
IV.MTRA.EHZ. 2021-03-11T00:55:18.77 0.1 undecidable manual P 22 18.6702 96 -0.14 97
IV.SMA1.EHZ. 2021-03-11T00:55:17.26 0.1 undecidable manual P 30 3.8961 156 0.22 98
IV.CAMP.HHZ. 2021-03-11T00:55:17.85 0.3 undecidable manual P 132 10.6782 121 0.11 75
IV.T1299.HNZ. 2021-03-11T00:55:17.17 0.1 undecidable manual P 328 4.4955 153 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.5 0.0003045 0.34 AML other m 2021-03-11T00:55:20.55
IV.RM33.EHE. ML:1.6 0.0003705 0.64 AML other m 2021-03-11T00:55:20.89
IV.MTRA.EHN. ML:1.2 0.00010875 0.84 AML other m 2021-03-11T00:55:21.46
IV.MTRA.EHE. ML:1.3 0.00015200000000000004 1.74 AML other m 2021-03-11T00:55:22.89
IV.LNSS.HHE. ML:1.3 0.0001245 0.64 AML other m 2021-03-11T00:55:23.46
IV.LNSS.HHN. ML:1.2 0.00009915 0.34 AML other m 2021-03-11T00:55:23.49
IV.TERO.HHN. ML:1.3 0.00011125000000000001 0.92 AML other m 2021-03-11T00:55:23.96
IV.TERO.HHE. ML:1.2 0.00008435 0.4 AML other m 2021-03-11T00:55:23.78
IV.NRCA.HHN. ML:1.3 0.0000975 0.1 AML other m 2021-03-11T00:55:25.37
IV.NRCA.HHE. ML:1.5 0.0001535 0.08 AML other m 2021-03-11T00:55:25.34
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