Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 20-05-2020 and time 13:10:45 (UTC) in region 6 km NE Leonessa (RI)

A magnitude ML 1.3 earthquake occured in region: 6 km NE Leonessa (RI), on

  • 20-05-2020 13:10:45 (UTC)
  • 20-05-2020 15:10:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6100, 13.0070 at 8 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 6 2435 2435
Monteleone di Spoleto PG 7 599 3034
Posta RI 12 694 3728
Cascia PG 12 3217 6945
Cittareale RI 13 482 7427
Poggiodomo PG 13 117 7544
Polino TR 14 233 7777
Borbona RI 15 617 8394
Poggio Bustone RI 15 2055 10449
Rivodutri RI 16 1253 11702
Morro Reatino RI 17 373 12075
Ferentillo TR 18 1913 13988
Cantalice RI 18 2755 16743
Micigliano RI 18 127 16870
Scheggino PG 18 461 17331
Labro RI 19 374 17705
Montefranco TR 20 1276 18981
Sant'Anatolia di Narco PG 20 564 19545
Arrone TR 20 2763 22308

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Terni (111501 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
46 Km SE of Foligno (57155 inhabitants)
57 Km W of Teramo (54892 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km N of Tivoli (56533 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
77 Km E of Viterbo (67173 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
100 Km W of Chieti (51815 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 2020-05-20
13:10:45		 42.61 13.0068 8 2020-11-19
12:36:56		 Bollettino Sismico Italiano INGV 81676931
Reviewed
Rev100 		ML 1.3 2020-05-20
13:10:45		 42.6133 13.0047 8 2020-05-20
13:25:35		 Sala Sismica INGV-Roma 79367821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-20 13:10:45 ± 0.1
Latitude 42.6100 ± 0.0054
Longitude 13.0068 ± 0.0086
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81676931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 631
Semi-minor axis of confidence ellipse (meter) 607
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 75
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42988
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 81676931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-09 23:33:10

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 79367821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-20 13:25:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MILZ.HHZ. 2020-05-20T13:12:49.90 3.0 undecidable manual Sn -6.74 0
XK.GIZZ.HHZ. 2020-05-20T13:12:44.70 3.0 undecidable manual Sn -3.79 0
FR.AJAC.HHZ.00 2020-05-20T13:12:06.07 3.0 undecidable manual Sg 2.45 0
XK.GIZZ.HHZ. 2020-05-20T13:12:05.87 3.0 positive manual Pg 15.94 0
GU.GENL.EHZ. 2020-05-20T13:12:02.00 3.0 undecidable manual Sg 8.26 0
IV.IST3.HHZ. 2020-05-20T13:11:57.15 3.0 undecidable manual Pg 9.44 0
IV.CLTA.HHZ. 2020-05-20T13:11:55.53 3.0 positive manual Pn -9.99 0
OX.CIMO.HHZ. 2020-05-20T13:11:49.15 3.0 undecidable manual Sn -3.91 0
IV.TDS.HHZ. 2020-05-20T13:11:39.09 3.0 positive manual Pn -3.62 0
IV.RAVA.EHZ. 2020-05-20T13:11:32.61 3.0 undecidable manual Sg 6.62 0
OX.CIMO.HHZ. 2020-05-20T13:11:17.19 3.0 undecidable manual Pn -1.6 0
GU.GENL.EHZ. 2020-05-20T13:11:13.29 3.0 undecidable manual Pn -5.88 0
IV.MAON.HHZ. 2020-05-20T13:11:11.19 3.0 undecidable manual Sn -9.73 0
IV.MNTV.HNZ. 2020-05-20T13:11:06.33 3.0 negative manual Pn -3.42 0
IV.FIR.HHZ. 2020-05-20T13:11:03.70 3.0 undecidable manual Sn -7 0
IV.FDMO.HHZ. 2020-05-20T13:11:00.61 0.6 undecidable manual S 8 47.7189 50 -0.44 45
IV.CESI.HHE. 2020-05-20T13:10:59.84 0.6 undecidable manual S 349 44.622 50 -0.36 46
IV.MOMA.HNZ. 2020-05-20T13:10:59.73 0.6 undecidable manual S 301 41.625 50 0.33 47
IV.FIAM.HHZ. 2020-05-20T13:10:58.29 0.3 undecidable manual S 167 39.0276 50 -0.42 69
IV.SMA1.EHZ. 2020-05-20T13:10:55.14 0.3 undecidable manual S 85 26.9508 107 0.22 74
IV.FDMO.HHZ. 2020-05-20T13:10:54.76 0.6 undecidable manual P 8 47.7189 50 0.42 45
IV.TERO.HHZ. 2020-05-20T13:10:54.31 3.0 undecidable manual Pg 1.15 0
IV.CESI.HHE. 2020-05-20T13:10:53.60 0.1 undecidable manual P 349 44.622 50 -0.25 95
IV.MOMA.HNZ. 2020-05-20T13:10:53.85 0.3 undecidable manual P 301 41.625 50 0.46 68
IV.T1299.HNZ. 2020-05-20T13:10:53.84 0.6 undecidable manual S 83 22.6551 110 0.32 49
IV.FIAM.HHZ. 2020-05-20T13:10:52.82 0.3 undecidable manual P 167 39.0276 50 -0.17 73
IV.RM33.EHZ. 2020-05-20T13:10:52.94 0.3 undecidable manual S 123 20.3685 112 0.17 75
IV.RIBO.EHZ.01 2020-05-20T13:10:51.49 3.0 negative manual Pn -6.24 0
IV.T1299.HNZ. 2020-05-20T13:10:50.17 0.1 undecidable manual P 83 22.6551 110 0.18 100
IV.NRCA.HHZ. 2020-05-20T13:10:50.49 0.3 undecidable manual P 19 26.2515 107 -0.2 74
IV.SMA1.EHZ. 2020-05-20T13:10:50.87 0.3 undecidable manual P 85 26.9508 107 0.07 76
IV.RM33.EHZ. 2020-05-20T13:10:49.72 0.3 undecidable manual P 123 20.3685 112 0.16 76
IV.ARRO.EHZ. 2020-05-20T13:10:49.84 0.3 undecidable manual P 260 19.9689 112 0.34 73
IV.LNSS.HHZ. 2020-05-20T13:10:47.60 0.1 undecidable manual S 106 2.7972 161 -0.55 95
IV.LNSS.HHZ. 2020-05-20T13:10:46.84 0.3 undecidable manual P 106 2.7972 161 -0.05 80
IV.CPGN.EHZ. 2020-05-20T13:10:44.89 3.0 undecidable manual Pn -0.58 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.4 0.000168 0.76 AML other m 2020-05-20T13:10:53.18
IV.RM33.HNN. ML:1.4 0.00017790424999999997 0.16 AML other m 2020-05-20T13:10:53.48
IV.ARRO.EHE. ML:0.8 0.0000562 0.8 AML other m 2020-05-20T13:10:54.30
IV.RM33.HNE. ML:1.3 0.000160346075 0.1984 AML other m 2020-05-20T13:10:54.42
IV.RM33.EHE. ML:1.3 0.00014399999999999998 0.2 AML other m 2020-05-20T13:10:54.42
IV.NRCA.HHE. ML:1.4 0.00013000000000000002 0.14 AML other m 2020-05-20T13:10:54.66
IV.SMA1.EHE. ML:1.4 0.00013285 0.26 AML other m 2020-05-20T13:10:55.39
IV.SMA1.EHN. ML:1.2 0.00008955000000000001 0.3 AML other m 2020-05-20T13:10:57.54
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