Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-03-2021 and time 11:13:14 (Italy) in region 5 km N Leonessa (RI)

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

  • 17-03-2021 10:13:14 (UTC)
  • 17-03-2021 11:13:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6060, 12.9550 at 14 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
Leonessa RI 5 2435 2435
Monteleone di Spoleto PG 5 599 3034
Polino TR 9 233 3267
Poggiodomo PG 12 117 3384
Poggio Bustone RI 13 2055 5439
Rivodutri RI 13 1253 6692
Morro Reatino RI 13 373 7065
Cascia PG 14 3217 10282
Ferentillo TR 14 1913 12195
Posta RI 15 694 12889
Arrone TR 15 2763 15652
Montefranco TR 15 1276 16928
Labro RI 15 374 17302
Scheggino PG 16 461 17763
Cantalice RI 16 2755 20518
Cittareale RI 17 482 21000
Sant'Anatolia di Narco PG 17 564 21564
Borbona RI 18 617 22181
Colli sul Velino RI 19 533 22714
Micigliano RI 19 127 22841
Vallo di Nera PG 20 364 23205

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Terni (111501 inhabitants)
44 Km SE of Foligno (57155 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
62 Km W of Teramo (54892 inhabitants)
70 Km N of Guidonia Montecelio (88673 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
73 Km N of Tivoli (56533 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
98 Km W of Montesilvano (53738 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 2021-03-17
10:13:14		 42.6062 12.9547 14 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90574151
Reviewed
Rev100 		ML 1.5 2021-03-17
10:13:14		 42.6135 12.9742 15 2021-03-17
10:41:44		 Sala Sismica INGV-Roma 88212681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-17 10:13:14 ± 0.14
Latitude 42.6062 ± 0.0090
Longitude 12.9547 ± 0.0086
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90574151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 995
Semi-minor axis of confidence ellipse (meter) 419
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 15
Circular confidence region, given by single value of horizontal uncertainty (meter) 990.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51891
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 90574151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-15 05:17:29

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 88212681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-17 10:41:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.HNZ. 2021-03-17T10:14:41.65 3.0 negative manual Pg 25.82 0
OX.CIMO.HHZ. 2021-03-17T10:14:33.50 3.0 undecidable manual Sn 0.36 0
CR.STON.BHZ. 2021-03-17T10:14:31.04 3.0 undecidable manual Sn -9.99 0
IV.ZEN8.EHZ. 2021-03-17T10:14:28.24 3.0 undecidable manual Sn 5.8 0
IV.MBAL.EHZ. 2021-03-17T10:14:27.96 3.0 undecidable manual Sn 4.95 0
IV.ECTS.HHZ. 2021-03-17T10:14:24.46 3.0 undecidable manual Pg 16.6 0
IV.ILOS.HHZ. 2021-03-17T10:14:21.21 3.0 negative manual Pg 20.49 0
IV.TEOL.HHZ. 2021-03-17T10:14:12.91 3.0 undecidable manual Sn -1.59 0
IV.ENIC.HNZ. 2021-03-17T10:14:09.28 3.0 positive manual Pn -1.09 0
IV.ORI.HHZ. 2021-03-17T10:14:09.95 3.0 undecidable manual Pg 16.200001 0
IV.VVLD.HHZ. 2021-03-17T10:13:56.92 3.0 undecidable manual Sg 1.22 0
IV.RUFI.EHZ. 2021-03-17T10:13:48.87 3.0 undecidable manual Sn -3.19 0
OT.OT14.EHZ. 2021-03-17T10:13:35.66 3.0 undecidable manual Pn -3.1 0
IV.CSP1.EHZ. 2021-03-17T10:13:25.42 0.3 undecidable manual P 21 57.5979 94 0.21 67
IV.ASSB.HHZ. 2021-03-17T10:13:24.68 0.3 undecidable manual P 334 54.1014 94 0.01 70
IV.SEI.HHZ. 2021-03-17T10:13:23.90 3.0 undecidable manual P -0.04 0
IV.FIAM.HHZ. 2021-03-17T10:13:22.54 0.6 undecidable manual P 160 39.8268 96 0.06 47
IV.MOMA.HHZ. 2021-03-17T10:13:22.48 0.6 undecidable manual P 305 38.2284 96 0.24 46
IV.ARRO.EHZ. 2021-03-17T10:13:21.54 0.6 undecidable manual S 259 15.6732 118 -0.25 48
IV.LNSS.HHZ. 2021-03-17T10:13:20.00 0.6 undecidable manual S 93 6.993 147 -0.05 50
IV.T1299.HNZ. 2021-03-17T10:13:20.03 0.3 undecidable manual P 83 26.9508 101 -0.48 66
IV.GAVE.EHZ. 2021-03-17T10:13:20.33 0.6 undecidable manual S 333 10.7781 133 -0.37 47
IV.GAVE.EHZ. 2021-03-17T10:13:18.30 0.1 positive manual P 333 10.7781 133 0.05 100
IV.LNSS.HHZ. 2021-03-17T10:13:18.12 0.1 negative manual P 93 6.993 147 0.25 96
IV.ARRO.EHZ. 2021-03-17T10:13:18.93 0.1 positive manual P 259 15.6732 118 0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNN. ML:1.4 0.00027262075 0.192 AML other m 2021-03-17T10:13:20.16
IV.LNSS.HNE. ML:1.6 0.000406846875 0.1024 AML other m 2021-03-17T10:13:20.20
IV.LNSS.HHE. ML:1.6 0.0004395 0.1 AML other m 2021-03-17T10:13:20.21
IV.LNSS.HHN. ML:1.5 0.00038549999999999994 0.3 AML other m 2021-03-17T10:13:20.31
IV.GAVE.EHN. ML:1.7 0.00052254955 0.1216 AML other m 2021-03-17T10:13:20.56
IV.GAVE.EHE. ML:1.7 0.0005185 0.18 AML other m 2021-03-17T10:13:20.80
IV.ARRO.EHN. ML:1.0 0.00008325801999999998 0.1408 AML other m 2021-03-17T10:13:22.17
IV.ARRO.EHE. ML:1.1 0.00009425 0.12 AML other m 2021-03-17T10:13:22.64
IV.MOMA.HHN. ML:1.2 0.0000535 0.18 AML other m 2021-03-17T10:13:30.69
IV.MOMA.HHE. ML:1.2 0.000050916955 0.096 AML other m 2021-03-17T10:13:31.46
IV.GAVE.HNN. ML:1.3 0.0001977991 0.9216 AML other m 2021-03-17T10:13:18.65
IV.GAVE.HNE. ML:1.7 0.0004861538 0.1856 AML other m 2021-03-17T10:13:20.70
IV.MOMA.HNE. ML:1.5 0.00010289031 0.9536 AML other m 2021-03-17T10:13:22.66
IV.MOMA.HNN. ML:1.6 0.00013024865 0.7488 AML other m 2021-03-17T10:13:29.88
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