Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 09-04-2020 and time 10:31:47 (UTC) in region 3 km NE Leonessa (RI)

A magnitude ML 1.5 earthquake occured in region: 3 km NE Leonessa (RI), on

  • 09-04-2020 10:31:47 (UTC)
  • 09-04-2020 12:31:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5880, 12.9760 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
Leonessa RI 3 2435 2435
Monteleone di Spoleto PG 7 599 3034
Polino TR 11 233 3267
Poggio Bustone RI 12 2055 5322
Posta RI 12 694 6016
Rivodutri RI 13 1253 7269
Morro Reatino RI 14 373 7642
Poggiodomo PG 14 117 7759
Cantalice RI 15 2755 10514
Cascia PG 15 3217 13731
Borbona RI 15 617 14348
Cittareale RI 16 482 14830
Ferentillo TR 16 1913 16743
Labro RI 16 374 17117
Micigliano RI 17 127 17244
Arrone TR 17 2763 20007
Montefranco TR 17 1276 21283
Scheggino PG 18 461 21744
Colli sul Velino RI 19 533 22277
Sant'Anatolia di Narco PG 20 564 22841

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Terni (111501 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
60 Km W of Teramo (54892 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km N of Tivoli (56533 inhabitants)
74 Km E of Viterbo (67173 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
87 Km NE of Roma (2864731 inhabitants)
97 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 1.5 2020-04-09
10:31:47		 42.5882 12.9762 13 2020-07-18
21:08:34		 Bollettino Sismico Italiano INGV 78697671
Reviewed
Rev100 		ML 1.5 2020-04-09
10:31:47		 42.5823 12.9708 13 2020-04-09
10:40:25		 Sala Sismica INGV-Roma 78039241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-09 10:31:47 ± 0.08
Latitude 42.5882 ± 0.0045
Longitude 12.9762 ± 0.0049
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 78697671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 466
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41998
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 78697671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-30 13:56:58

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 78039241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-09 10:40:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTCC.HHZ. 2020-04-09T10:33:29.88 3.0 undecidable manual Sn -2.08 0
MN.CLTB.HHZ. 2020-04-09T10:33:18.97 3.0 negative manual Pg 16.809999 0
IV.SBPO.HNZ. 2020-04-09T10:33:10.65 3.0 undecidable manual Sn 1.89 0
XK.GIZZ.HHZ. 2020-04-09T10:33:01.17 3.0 positive manual Pg 7.9 0
GU.POPM.HHZ. 2020-04-09T10:32:55.37 3.0 undecidable manual Sg 3.69 0
IV.CSNT.HHZ. 2020-04-09T10:32:35.07 3.0 undecidable manual Sn -0.53 0
IV.MNTV.HNZ. 2020-04-09T10:32:33.71 3.0 negative manual Pn -1.25 0
IV.GIUL.HHZ. 2020-04-09T10:32:19.67 3.0 undecidable manual S -4.03 0
IV.VIVA.HHZ. 2020-04-09T10:32:17.07 3.0 undecidable manual S -0.22 0
IV.SNTG.HHZ. 2020-04-09T10:32:07.91 3.0 undecidable manual S -3.81 0
IV.MMO1.EHZ. 2020-04-09T10:32:02.48 0.3 undecidable manual S 39 44.8218 94 0.55 64
IV.FIAM.HHZ. 2020-04-09T10:32:00.12 0.3 undecidable manual S 162 37.3293 95 0.18 70
IV.MTRA.EHZ. 2020-04-09T10:32:00.31 0.3 undecidable manual S 61 39.0276 95 -0.09 70
IV.MNTT.EHZ. 2020-04-09T10:31:58.78 3.0 positive manual P -2.05 0
IV.NRCA.HHZ. 2020-04-09T10:31:57.61 0.1 undecidable manual S 22 29.4483 97 -0.24 92
IV.CESI.HHZ. 2020-04-09T10:31:56.51 0.3 positive manual P 353 46.62 94 0.41 65
IV.T1299.EHZ. 2020-04-09T10:31:56.78 0.3 undecidable manual S 78 25.5522 100 -0.02 73
IV.RM33.EHZ. 2020-04-09T10:31:55.67 0.1 undecidable manual S 114 21.3675 103 -0.05 97
IV.MOMA.HHZ. 2020-04-09T10:31:55.16 0.1 undecidable manual P 306 40.8258 94 -0.05 95
IV.MMO1.EHZ. 2020-04-09T10:31:55.78 0.1 undecidable manual P 39 44.8218 94 -0.04 93
IV.ARRO.EHZ. 2020-04-09T10:31:54.42 0.6 undecidable manual S 267 17.1717 110 -0.23 48
IV.CESX.HHE. 2020-04-09T10:31:54.14 0.3 undecidable manual P 274 31.8459 96 0.3 68
IV.FIAM.HHZ. 2020-04-09T10:31:54.44 0.1 undecidable manual P 162 37.3293 95 -0.23 92
IV.MTRA.EHZ. 2020-04-09T10:31:54.91 0.6 undecidable manual P 61 39.0276 95 -0.03 47
IV.NRCA.HHZ. 2020-04-09T10:31:53.25 0.1 undecidable manual P 22 29.4483 97 -0.22 93
IV.T1299.EHZ. 2020-04-09T10:31:53.11 0.1 undecidable manual P 78 25.5522 100 0.24 94
IV.LNSS.HHZ. 2020-04-09T10:31:52.13 0.1 undecidable manual S 73 5.4945 152 -0.13 100
IV.RM33.EHZ. 2020-04-09T10:31:52.23 0.1 undecidable manual P 114 21.3675 103 -0.01 98
IV.ARRO.EHZ. 2020-04-09T10:31:51.55 0.1 positive manual P 267 17.1717 110 -0.08 99
IV.LNSS.HHZ. 2020-04-09T10:31:50.32 0.1 negative manual P 73 5.4945 152 0.08 100
IV.FOPC.HGZ. 2020-04-09T10:31:50.33 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNE. ML:1.8 0.0009370486 0.1728 AML other m 2020-04-09T10:31:52.32
IV.LNSS.HHE. ML:1.9 0.0010093777500000001 0.16 AML other m 2020-04-09T10:31:52.32
IV.LNSS.HHN. ML:1.7 0.00067192095 0.1792 AML other m 2020-04-09T10:31:53.40
IV.LNSS.HNN. ML:1.7 0.000646307125 0.192 AML other m 2020-04-09T10:31:53.41
IV.ARRO.EHN. ML:1.4 0.0001751805 0.1408 AML other m 2020-04-09T10:31:55.05
IV.ARRO.EHE. ML:1.2 0.00013512734999999998 0.2368 AML other m 2020-04-09T10:31:55.54
IV.RM33.HNN. ML:1.4 0.000149337175 0.1792 AML other m 2020-04-09T10:31:55.84
IV.RM33.EHN. ML:1.3 0.0001262336 0.16 AML other m 2020-04-09T10:31:55.93
IV.RM33.EHE. ML:1.1 0.00008407282 0.1216 AML other m 2020-04-09T10:31:56.52
IV.NRCA.HHN. ML:1.4 0.00010477051499999999 0.1024 AML other m 2020-04-09T10:31:58.68
IV.NRCA.HHE. ML:1.5 0.00015949815 0.1152 AML other m 2020-04-09T10:31:59.10
IV.RM33.HNE. ML:1.5 0.00019688220000000002 1.2096 AML other m 2020-04-09T10:31:59.97
IV.MNTT.EHE. ML:1.6 0.00006583618499999999 0.1408 AML other m 2020-04-09T10:31:59.73
IV.MTRA.EHN. ML:1.5 0.000097704375 0.2816 AML other m 2020-04-09T10:32:00.82
IV.MTRA.HNE. ML:1.6 0.0001405638 1.5392 AML other m 2020-04-09T10:32:00.20
IV.MTRA.EHE. ML:1.4 0.00008301038499999999 0.32 AML other m 2020-04-09T10:32:00.99
IV.NRCA.HNN. ML:1.6 0.0001761406 0.928 AML other m 2020-04-09T10:32:01.53
IV.MTRA.HNN. ML:1.6 0.000132902 1.648 AML other m 2020-04-09T10:32:01.96
IV.FIAM.HHE. ML:0.6 0.000017287265 0.16 AML other m 2020-04-09T10:32:01.16
IV.MOMA.HHN. ML:1.5 0.00009481817000000001 0.2432 AML other m 2020-04-09T10:32:01.46
IV.FIAM.HHN. ML:0.7 0.000021303490000000003 0.1792 AML other m 2020-04-09T10:32:01.64
IV.MOMA.HHE. ML:1.6 0.00011864255 0.3008 AML other m 2020-04-09T10:32:01.72
IV.FIAM.HNN. ML:1.6 0.000155118525 0.9696 AML other m 2020-04-09T10:32:01.46
IV.MOMA.HNN. ML:1.8 0.0001893829 0.8672 AML other m 2020-04-09T10:32:03.55
IV.CESI.HHN. ML:1.4 0.00007664272999999999 0.16 AML other m 2020-04-09T10:32:03.25
IV.NRCA.HNE. ML:1.5 0.00014761053000000003 0.6336 AML other m 2020-04-09T10:32:04.34
IV.MOMA.HNE. ML:1.6 0.00014549815 1.1808 AML other m 2020-04-09T10:32:04.72
IV.CESI.HHE. ML:1.0 0.000031849055 0.1792 AML other m 2020-04-09T10:32:04.51
IV.FIAM.HNE. ML:2.5 0.0012644161 0.9152 AML other m 2020-04-09T10:32:04.51
IV.MNTT.EHN. ML:1.6 0.0000622815 0.4224 AML other m 2020-04-09T10:32:14.76
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