Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 19-04-2023 and time 14:27:49 (Italy) in region 3 km W Sellano (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km W Sellano (PG), on

  • 19-04-2023 12:27:49 (UTC)
  • 19-04-2023 14:27:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8820, 12.8960 at 11 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sellano PG 3 1079 1079
Cerreto di Spoleto PG 7 1075 2154
Preci PG 12 724 2878
Campello sul Clitunno PG 12 2442 5320
Trevi PG 12 8469 13789
Vallo di Nera PG 13 364 14153
Monte Cavallo MC 15 145 14298
Visso MC 17 1107 15405
Sant'Anatolia di Narco PG 17 564 15969
Foligno PG 18 57155 73124
Norcia PG 19 4957 78081
Poggiodomo PG 19 117 78198
Castel Ritaldi PG 19 3278 81476
Scheggino PG 20 461 81937
Montefalco PG 20 5679 87616

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
48 Km SE of Perugia (166134 inhabitants)
71 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
99 Km N of Guidonia Montecelio (88673 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 1.0 2023-04-19
12:27:49		 42.8823 12.8958 11 2023-04-19
12:52:29		 Sala Sismica INGV-Roma 116518121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-19 12:27:49 ± 0.06
Latitude 42.8823 ± 0.0027
Longitude 12.8958 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116518121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 373
Semi-minor axis of confidence ellipse (meter) 286
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
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) 61
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47124
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 116518121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-19 12:52:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2023-04-19T12:28:00.28 0.6 undecidable manual S 252 27.8499 50 0.4 45
IV.MMO1.EHZ. 2023-04-19T12:27:59.18 3.0 undecidable manual P 2.53 0
IV.EL6.EHZ. 2023-04-19T12:27:59.56 0.3 undecidable manual P 19 52.3032 50 0.1 69
IV.MML1.HNZ. 2023-04-19T12:27:59.54 0.6 undecidable manual S 13 26.3514 50 0.06 49
IV.ASSB.HHZ. 2023-04-19T12:27:58.98 0.3 undecidable manual S 313 26.2515 50 -0.46 67
IV.FDMO.HHZ. 2023-04-19T12:27:58.51 0.6 undecidable manual S 42 23.1546 50 -0.1 48
IV.NRCA.HHZ. 2023-04-19T12:27:57.23 0.1 undecidable manual S 107 18.5703 50 -0.17 97
IV.SNTG.HHZ. 2023-04-19T12:27:57.72 0.3 undecidable manual P 5 41.5251 50 -0.07 71
IV.GAVE.EHZ. 2023-04-19T12:27:57.99 0.6 undecidable manual S 180 21.0678 50 -0.08 49
IT.MTCL.HGZ. 2023-04-19T12:27:56.17 0.6 undecidable manual S 34 14.9739 126 -0.24 48
IV.CSP1.EHZ. 2023-04-19T12:27:56.75 0.1 positive manual P 47 34.2435 50 0.09 96
IV.FEMA.HNZ. 2023-04-19T12:27:56.50 0.6 undecidable manual S 55 15.2736 126 -0.01 50
IV.CESX.HHZ. 2023-04-19T12:27:56.71 1.0 negative manual P 220 39.4272 50 -0.76 20
IV.CESI.HHZ. 2023-04-19T12:27:56.06 0.6 undecidable manual S 3 13.5753 129 0.02 50
IV.ARRO.EHZ. 2023-04-19T12:27:56.91 1.0 negative manual P 198 35.2425 50 0.08 24
7F.SIB1.EHZ. 2023-04-19T12:27:56.36 0.3 undecidable manual P 87 30.4473 50 0.27 70
IV.LNSS.HHZ. 2023-04-19T12:27:56.45 0.3 undecidable manual P 159 33.1446 50 -0.05 72
IV.MML1.HNZ. 2023-04-19T12:27:55.46 0.1 undecidable manual P 13 26.3514 50 0 98
IV.ASSB.HHZ. 2023-04-19T12:27:55.38 0.6 undecidable manual P 313 26.2515 50 -0.05 49
IV.MOMA.HHZ. 2023-04-19T12:27:55.85 1.0 undecidable manual P 252 27.8499 50 0.16 24
IV.FDMO.HHZ. 2023-04-19T12:27:54.95 0.1 positive manual P 42 23.1546 50 -0.01 99
IV.NRCA.HHZ. 2023-04-19T12:27:54.25 0.1 negative manual P 107 18.5703 50 -0.01 100
IV.GAVE.EHZ. 2023-04-19T12:27:54.69 0.1 undecidable manual P 180 21.0678 50 0.05 99
IV.CESI.HHZ. 2023-04-19T12:27:53.62 0.1 positive manual P 3 13.5753 129 0.15 97
IT.MTCL.HGZ. 2023-04-19T12:27:53.73 0.1 undecidable manual P 34 14.9739 126 0.05 99
IV.FEMA.HNZ. 2023-04-19T12:27:53.92 0.1 undecidable manual P 55 15.2736 126 0.18 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.1 0.000121 0.14 AML other m 2023-04-19T12:27:56.26
IV.CESI.HHN. ML:1.2 0.00016249999999999997 0.36 AML other m 2023-04-19T12:27:56.34
IV.NRCA.HHE. ML:1.2 0.00011999999999999999 0.2 AML other m 2023-04-19T12:27:57.52
IV.NRCA.HHN. ML:1.1 0.000097 0.42 AML other m 2023-04-19T12:27:57.53
IV.FDMO.HHN. ML:0.9 0.00005069999999999999 0.2 AML other m 2023-04-19T12:27:58.81
IV.FDMO.HHE. ML:0.8 0.000037099999999999994 0.48 AML other m 2023-04-19T12:27:59.15
IV.ASSB.HHE. ML:1.0 0.00005565 0.68 AML other m 2023-04-19T12:27:59.22
IV.ASSB.HHN. ML:1.0 0.0000519 0.16 AML other m 2023-04-19T12:27:59.62
IV.LNSS.HHN. ML:1.1 0.00005225 1.7 AML other m 2023-04-19T12:28:02.04
IV.LNSS.HHE. ML:1.2 0.00006755 0.92 AML other m 2023-04-19T12:28:02.63
IV.SNTG.HHE. ML:0.8 0.0000202 0.48 AML other m 2023-04-19T12:28:04.06
IV.SNTG.HHN. ML:0.9 0.000027400000000000002 0.12 AML other m 2023-04-19T12:28:05.35
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