Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 27-03-2023 and time 16:58:18 (Italy) in region 6 km S Leonessa (RI)

A magnitude ML 1.5 earthquake occured in region: 6 km S Leonessa (RI), on

  • 27-03-2023 14:58:18 (UTC)
  • 27-03-2023 16:58:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5110, 12.9640 at 10 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
Poggio Bustone RI 6 2055 4490
Cantalice RI 7 2755 7245
Rivodutri RI 9 1253 8498
Micigliano RI 10 127 8625
Morro Reatino RI 11 373 8998
Posta RI 11 694 9692
Polino TR 13 233 9925
Labro RI 14 374 10299
Cittaducale RI 14 6828 17127
Borbona RI 14 617 17744
Castel Sant'Angelo RI 14 1308 19052
Borgo Velino RI 14 972 20024
Antrodoco RI 14 2588 22612
Rieti RI 14 47698 70310
Colli sul Velino RI 15 533 70843
Monteleone di Spoleto PG 16 599 71442
Greccio RI 17 1558 73000
Arrone TR 18 2763 75763
Montefranco TR 19 1276 77039
Ferentillo TR 19 1913 78952
Contigliano RI 20 3783 82735

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Terni (111501 inhabitants)
40 Km W of L'Aquila (69753 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
60 Km NE of Guidonia Montecelio (88673 inhabitants)
62 Km N of Tivoli (56533 inhabitants)
63 Km W of Teramo (54892 inhabitants)
71 Km E of Viterbo (67173 inhabitants)
79 Km NE of Roma (2864731 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
93 Km N of Velletri (53303 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 2023-03-27
14:58:18		 42.5107 12.9638 10 2024-03-01
17:18:15		 Bollettino Sismico Italiano INGV 120603531
Reviewed
Rev100 		ML 1.5 2023-03-27
14:58:18		 42.5128 12.9643 10 2023-03-27
15:33:44		 Sala Sismica INGV-Roma 115799051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-27 14:58:18 ± 0.09
Latitude 42.5107 ± 0.0045
Longitude 12.9638 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 120603531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 531
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 196
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 205
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 4.84555
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 120603531
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-09-08 10:41:01

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 115799051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-27 15:33:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SALB.HHZ. 2023-03-27T15:02:58.70 3.0 undecidable manual S 406.2822 9.999 0
IV.ORI.HHZ. 2023-03-27T15:00:01.34 3.0 undecidable manual Sn 0.89 0
NI.VINO.HHZ. 2023-03-27T15:00:01.40 3.0 undecidable manual Sn -1.17 0
ST.DOSS.HHZ. 2023-03-27T14:59:53.96 3.0 undecidable manual Sn -4.78 0
IV.BULG.HHZ. 2023-03-27T14:59:50.20 3.0 undecidable manual Sg 3.52 0
IV.CRJA.HNZ. 2023-03-27T14:59:40.44 3.0 undecidable manual P 522.3882 1.048 0
IV.MMGO.HHZ. 2023-03-27T14:59:32.19 3.0 undecidable manual P 537.8505 0.31 0
IV.VARE.HHZ. 2023-03-27T14:59:32.47 3.0 undecidable manual P 499.9218 5.31 0
IV.MSRU.HHZ. 2023-03-27T14:59:26.99 3.0 undecidable manual P 517.8927 -2.4 0
IV.SALB.HHZ. 2023-03-27T14:59:16.02 3.0 positive manual P 406.2822 0.51 0
IV.GATE.HHZ. 2023-03-27T14:59:15.41 3.0 undecidable manual Sg -0.12 0
IV.CMPR.HHZ. 2023-03-27T14:59:08.71 3.0 undecidable manual P 311.4549 5 0
GU.CARD.HHZ. 2023-03-27T14:59:04.96 3.0 undecidable manual P 261.6381 7.45 0
GU.GSCL.HHZ. 2023-03-27T14:59:02.20 3.0 undecidable manual P 279.8088 2.43 0
IV.MGAB.HHZ. 2023-03-27T14:58:44.79 3.0 undecidable manual S -0.48 0
IV.CESI.HHE. 2023-03-27T14:58:36.00 0.6 undecidable manual S 355 55.0005 50 0.45 43
IV.FDMO.HHZ. 2023-03-27T14:58:36.70 0.3 undecidable manual S 10 59.1963 50 0.04 69
IV.ASSB.HHZ. 2023-03-27T14:58:35.33 3.0 undecidable manual P 63.9915 5.75 0
7F.SIB1.EHN. 2023-03-27T14:58:34.20 0.6 undecidable manual S 30 49.4172 50 0.16 46
7F.SIB2.EHZ. 2023-03-27T14:58:34.40 0.3 undecidable manual S 33 50.5161 50 0.06 70
IV.MMO1.EHZ. 2023-03-27T14:58:34.90 0.6 undecidable manual S 34 52.3032 50 0.08 46
7F.SIB3.EHZ. 2023-03-27T14:58:33.50 0.3 undecidable manual S 32 47.5191 50 -0.04 71
IV.NRCA.HHZ. 2023-03-27T14:58:30.60 0.3 undecidable manual S 19 37.8288 50 -0.36 67
IV.FDMO.HHZ. 2023-03-27T14:58:29.20 0.6 undecidable manual P 10 59.1963 50 0.37 43
IV.SMA1.EHZ. 2023-03-27T14:58:29.70 0.6 undecidable manual S 66 33.1446 50 0 49
IV.CESI.HHE. 2023-03-27T14:58:28.30 0.6 undecidable manual P 355 55.0005 50 0.11 46
IV.MMO1.EHZ. 2023-03-27T14:58:27.69 0.3 undecidable manual P 34 52.3032 50 -0.08 70
IV.CESX.HHZ. 2023-03-27T14:58:27.85 3.0 undecidable manual P 32.6451 3.11 0
7F.SIB1.EHN. 2023-03-27T14:58:27.19 0.3 undecidable manual P 30 49.4172 50 -0.13 69
7F.SIB2.EHZ. 2023-03-27T14:58:27.64 0.6 undecidable manual P 33 50.5161 50 0.15 46
IV.GAVE.HNE. 2023-03-27T14:58:26.00 0.6 undecidable manual S 344 20.9679 115 -0.18 48
IV.MOMA.HHZ. 2023-03-27T14:58:26.82 1.0 undecidable manual P 315 45.7209 50 0.06 24
7F.SIB3.EHZ. 2023-03-27T14:58:26.90 0.3 undecidable manual P 32 47.5191 50 -0.14 69
IV.NRCA.HHZ. 2023-03-27T14:58:25.31 0.3 undecidable manual P 19 37.8288 50 -0.24 69
IV.ARRO.EHZ. 2023-03-27T14:58:25.10 0.3 undecidable manual S 295 17.871 119 -0.14 73
IV.RM33.EHZ. 2023-03-27T14:58:25.90 0.3 undecidable manual S 90 20.4684 116 -0.15 73
IV.MTCL.HGZ. 2023-03-27T14:58:25.29 3.0 undecidable manual P 0
IV.SMA1.EHZ. 2023-03-27T14:58:24.78 0.3 undecidable manual P 66 33.1446 50 -0.04 73
IV.LNSS.HHZ. 2023-03-27T14:58:23.60 0.1 undecidable manual S 31 11.9769 130 0.06 100
IV.ARRO.EHZ. 2023-03-27T14:58:22.38 0.3 undecidable manual P 295 17.871 119 0.14 73
IV.RM33.EHZ. 2023-03-27T14:58:22.79 0.1 undecidable manual P 90 20.4684 116 0.08 98
IV.GAVE.HNE. 2023-03-27T14:58:22.63 0.3 undecidable manual P 344 20.9679 115 -0.15 72
IV.LNSS.HHZ. 2023-03-27T14:58:21.49 0.1 undecidable manual P 31 11.9769 130 0.23 97
IT.FOPC.HGN. 2023-03-27T14:58:18.75 3.0 undecidable manual P -9.46 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:0.0 0.0006035 0.6 AML other m 2023-03-27T14:58:23.59
IV.LNSS.HNN. ML:0.0 0.000687 0.62 AML other m 2023-03-27T14:58:23.59
IV.LNSS.HHE. ML:0.0 0.0008060000000000001 0.5 AML other m 2023-03-27T14:58:23.71
IV.LNSS.HNE. ML:0.0 0.000693 0.58 AML other m 2023-03-27T14:58:24.71
IV.ARRO.EHE. ML:0.0 0.00010640000000000001 0.44 AML other m 2023-03-27T14:58:25.70
IV.ARRO.EHN. ML:0.0 0.00010705 0.16 AML other m 2023-03-27T14:58:25.78
IV.RM33.EHN. ML:0.0 0.000142 0.56 AML other m 2023-03-27T14:58:26.30
IV.RM33.EHE. ML:0.0 0.00015 0.6 AML other m 2023-03-27T14:58:26.98
IV.NRCA.HHE. ML:0.0 0.00009545 0.36 AML other m 2023-03-27T14:58:31.06
IV.NRCA.HHN. ML:0.0 0.00006535 0.58 AML other m 2023-03-27T14:58:32.59
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