Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 15-03-2021 and time 22:52:45 (UTC) in region 1 km E Amatrice (RI)

A magnitude ML 1.3 earthquake occured in region: 1 km E Amatrice (RI), on

  • 15-03-2021 22:52:45 (UTC)
  • 15-03-2021 23:52:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6260, 13.3060 at 8 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.

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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 1 2657 2657
Accumoli RI 9 667 3324
Campotosto AQ 9 542 3866
Capitignano AQ 12 665 4531
Cittareale RI 12 482 5013
Montereale AQ 12 2581 7594
Arquata del Tronto AP 17 1178 8772
Crognaleto TE 17 1297 10069
Cortino TE 17 656 10725
Acquasanta Terme AP 18 2916 13641
Borbona RI 19 617 14258
Rocca Santa Maria TE 19 537 14795
Barete AQ 19 737 15532
Cagnano Amiterno AQ 20 1369 16901

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
92 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
Reviewed
Rev100 		ML 1.3 2021-03-15
22:52:45		 42.6257 13.3057 8 2021-03-15
23:11:45		 Sala Sismica INGV-Roma 88173991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-15 22:52:45 ± 0.07
Latitude 42.6257 ± 0.0036
Longitude 13.3057 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 88173991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 371
Semi-minor axis of confidence ellipse (meter) 340
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.71856
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 88173991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-15 23:11:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-03-15T22:53:10.43 0.3 undecidable manual S 348 79.7646 50 0.53 61
IV.CESI.HHZ. 2021-03-15T22:53:02.61 0.3 undecidable manual S 322 53.2023 50 -0.2 69
IV.GUMA.HHZ. 2021-03-15T22:53:02.32 0.3 undecidable manual S 3 48.5181 50 0.77 59
IV.CSP1.EHZ. 2021-03-15T22:53:02.63 0.3 undecidable manual S 351 52.3032 50 0.06 71
IV.FDMO.HHZ. 2021-03-15T22:53:01.54 0.3 undecidable manual S 339 48.9177 50 -0.11 71
IV.MF5.EHZ. 2021-03-15T22:53:00.40 0.3 undecidable manual S 17 42.1245 50 0.57 64
IV.EL6.EHZ. 2021-03-15T22:52:59.48 0.3 undecidable manual P 348 79.7646 50 -0.07 68
IV.MC2.EHZ. 2021-03-15T22:52:57.32 0.3 undecidable manual S 343 33.1446 103 0.12 73
IV.GAVE.EHZ. 2021-03-15T22:52:57.15 0.3 undecidable manual S 283 34.3434 103 -0.49 67
IV.MMO1.EHZ. 2021-03-15T22:52:56.05 0.3 undecidable manual S 3 30.4473 104 -0.25 71
IV.NRCA.HHZ. 2021-03-15T22:52:55.25 0.6 undecidable manual S 326 27.8499 106 -0.19 48
IV.GIGS.HJZ. 2021-03-15T22:52:55.07 0.3 undecidable manual S 131 29.0487 105 -0.76 61
IV.CESI.HHZ. 2021-03-15T22:52:55.18 0.1 undecidable manual P 322 53.2023 50 -0.28 91
IV.CSP1.EHZ. 2021-03-15T22:52:54.97 0.3 undecidable manual P 351 52.3032 50 -0.35 67
IV.TERO.HHZ. 2021-03-15T22:52:54.04 0.3 undecidable manual S 91 24.3534 108 -0.23 72
IV.FDMO.HHZ. 2021-03-15T22:52:54.39 0.1 undecidable manual P 339 48.9177 50 -0.4 89
IV.GUMA.HHZ. 2021-03-15T22:52:54.83 0.1 undecidable manual P 3 48.5181 50 0.1 95
IV.MF5.EHZ. 2021-03-15T22:52:53.94 0.1 undecidable manual P 17 42.1245 50 0.2 94
IV.LNSS.HHZ. 2021-03-15T22:52:53.54 0.3 undecidable manual S 263 21.867 110 0.1 75
IV.GAVE.EHZ. 2021-03-15T22:52:52.13 0.1 undecidable manual P 283 34.3434 103 -0.33 93
IV.MC2.EHZ. 2021-03-15T22:52:52.10 0.1 undecidable manual P 343 33.1446 103 -0.12 97
IV.MTRA.EHZ. 2021-03-15T22:52:51.52 0.3 undecidable manual S 27 16.2726 115 -0.15 75
IV.RM33.EHZ. 2021-03-15T22:52:51.66 0.3 undecidable manual S 210 14.9739 117 0.41 71
IV.NRCA.HHZ. 2021-03-15T22:52:51.14 0.1 undecidable manual P 326 27.8499 106 -0.06 99
IV.GIGS.HJZ. 2021-03-15T22:52:51.20 0.1 undecidable manual P 131 29.0487 105 -0.22 96
IV.MMO1.EHZ. 2021-03-15T22:52:51.58 0.1 undecidable manual P 3 30.4473 104 -0.12 98
MN.AQU.HNZ. 2021-03-15T22:52:51.51 0.6 undecidable manual P 165 31.2465 104 -0.34 47
IV.LNSS.HHZ. 2021-03-15T22:52:50.24 0.1 undecidable manual P 263 21.867 110 0.2 98
IV.CAMP.HHZ. 2021-03-15T22:52:50.91 0.3 undecidable manual S 140 13.0758 121 0.23 74
IV.TERO.HHZ. 2021-03-15T22:52:50.40 0.1 undecidable manual P 91 24.3534 108 -0.13 99
IV.MTRA.EHZ. 2021-03-15T22:52:49.15 0.1 undecidable manual P 27 16.2726 115 0.12 100
IV.RM33.EHZ. 2021-03-15T22:52:49.20 0.6 positive manual P 210 14.9739 117 0.42 47
IV.CAMP.HHZ. 2021-03-15T22:52:48.74 0.1 undecidable manual P 140 13.0758 121 0.29 97
IV.T1299.HNZ. 2021-03-15T22:52:48.24 0.3 undecidable manual S 296 2.0979 165 0.04 78
IV.SMA1.EHZ. 2021-03-15T22:52:48.32 0.3 undecidable manual S 77 2.4975 162 0.08 77
IV.SMA1.EHZ. 2021-03-15T22:52:47.39 0.1 undecidable manual P 77 2.4975 162 0.35 98
IV.T1299.HNZ. 2021-03-15T22:52:47.34 0.1 undecidable manual P 296 2.0979 165 0.32 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:0.0 0.001773269 0.1664 AML other m 2021-03-15T22:52:48.61
IV.MTRA.HNE. ML:1.6 0.000426 0.08 AML other m 2021-03-15T22:52:51.65
IV.MTRA.EHE. ML:1.7 0.0004305 0.08 AML other m 2021-03-15T22:52:51.61
IV.MTRA.EHN. ML:1.4 0.00021420270000000003 0.1152 AML other m 2021-03-15T22:52:51.92
IV.MTRA.HNN. ML:1.3 0.0002104822 0.1152 AML other m 2021-03-15T22:52:51.92
IV.RM33.EHE. ML:1.3 0.00019627205 0.256 AML other m 2021-03-15T22:52:52.86
IV.RM33.EHN. ML:1.1 0.0001330347 0.1152 AML other m 2021-03-15T22:52:52.13
IV.TERO.HHN. ML:1.6 0.000257 0.28 AML other m 2021-03-15T22:52:54.14
IV.TERO.HHE. ML:1.4 0.00016199999999999998 0.1 AML other m 2021-03-15T22:52:54.33
IV.LNSS.HHN. ML:0.8 0.00004006464 0.1408 AML other m 2021-03-15T22:52:54.31
IV.NRCA.HHN. ML:1.5 0.000183 0.12 AML other m 2021-03-15T22:52:55.65
IV.NRCA.HHE. ML:1.4 0.0001277254 0.1408 AML other m 2021-03-15T22:52:55.85
IV.LNSS.HHE. ML:0.9 0.0000538561 0.1024 AML other m 2021-03-15T22:52:55.29
IV.RM33.HNE. ML:1.3 0.00020433755 0.1664 AML other m 2021-03-15T22:52:52.86
IV.RM33.HNN. ML:1.2 0.0001677381 0.1792 AML other m 2021-03-15T22:52:52.43
IV.TERO.HNE. ML:1.4 0.00014771775 0.1408 AML other m 2021-03-15T22:52:54.40
IV.TERO.HNN. ML:1.6 0.00027962255 0.128 AML other m 2021-03-15T22:52:54.21
IV.NRCA.HNE. ML:1.4 0.0001192912 0.1536 AML other m 2021-03-15T22:52:55.85
IV.NRCA.HNN. ML:1.5 0.000186023415 0.128 AML other m 2021-03-15T22:52:55.59
IV.GAVE.EHE. ML:1.2 0.000059271845 0.1408 AML other m 2021-03-15T22:52:57.96
IV.GAVE.EHN. ML:1.0 0.000039891835 0.1408 AML other m 2021-03-15T22:52:58.78
IV.GUMA.HHE. ML:1.3 0.000055057805 0.2688 AML other m 2021-03-15T22:53:05.09
IV.GUMA.HHN. ML:1.2 0.00003807393599999999 0.2816 AML other m 2021-03-15T22:53:03.00
IV.CSP1.EHE. ML:1.0 0.000022665070000000002 0.192 AML other m 2021-03-15T22:53:03.51
IV.CSP1.EHN. ML:1.1 0.00002808705 0.1152 AML other m 2021-03-15T22:53:04.52
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