Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 27-03-2023 and time 06:46:37 (Italy) in region 6 km NE Sellano (PG)

A magnitude ML 1.2 earthquake occured in region: 6 km NE Sellano (PG), on

  • 27-03-2023 04:46:37 (UTC)
  • 27-03-2023 06:46:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9250, 12.9870 at 12 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 6 1079 1079
Preci PG 7 724 1803
Monte Cavallo MC 8 145 1948
Visso MC 8 1107 3055
Ussita MC 13 444 3499
Cerreto di Spoleto PG 13 1075 4574
Castelsantangelo sul Nera MC 14 281 4855
Pieve Torina MC 14 1458 6313
Fiordimonte MC 15 202 6515
Serravalle di Chienti MC 17 1070 7585
Norcia PG 17 4957 12542
Pievebovigliana MC 17 866 13408
Muccia MC 18 915 14323
Fiastra MC 19 559 14882
Acquacanina MC 19 121 15003
Vallo di Nera PG 20 364 15367

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
53 Km E of Perugia (166134 inhabitants)
66 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 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 1.2 2023-03-27
04:46:37		 42.9253 12.9872 12 2023-03-27
05:00:56		 Sala Sismica INGV-Roma 115780311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-27 04:46:37 ± 0.08
Latitude 42.9253 ± 0.0036
Longitude 12.9872 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115780311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 181
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41189
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 115780311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-27 05:00:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2023-03-27T04:46:52.60 0.3 undecidable manual S 12 45.7209 92 0.25 67
IV.ARVD.HHZ. 2023-03-27T04:46:50.45 3.0 negative manual P 0.07 0
IV.CSP1.EHZ. 2023-03-27T04:46:47.06 0.6 undecidable manual S 44 25.5522 96 0.09 49
IV.ASSB.HHZ. 2023-03-27T04:46:47.91 0.6 undecidable manual S 296 29.6481 94 -0.15 48
IV.EL6.EHZ. 2023-03-27T04:46:46.09 0.1 undecidable manual P 12 45.7209 92 -0.06 94
IV.MML1.EHZ. 2023-03-27T04:46:45.56 0.6 undecidable manual S 357 20.868 99 -0.18 48
IV.NRCA.HHZ. 2023-03-27T04:46:44.02 0.3 undecidable manual S 135 14.4744 111 -0.07 72
IV.CSP1.EHZ. 2023-03-27T04:46:43.00 1.0 undecidable manual P 44 25.5522 96 -0.04 24
IV.ASSB.HHZ. 2023-03-27T04:46:43.76 1.0 undecidable manual P 296 29.6481 94 0.09 24
IV.CESI.HHZ. 2023-03-27T04:46:43.25 0.6 undecidable manual S 323 11.0778 124 -0.02 50
IV.FDMO.HHZ. 2023-03-27T04:46:43.90 0.6 undecidable manual S 33 14.7741 111 -0.25 47
IV.MML1.EHZ. 2023-03-27T04:46:42.36 0.6 undecidable manual P 357 20.868 99 0.03 49
IV.CESI.HHZ. 2023-03-27T04:46:41.01 0.6 undecidable manual P 323 11.0778 124 0.1 50
IV.FDMO.HHZ. 2023-03-27T04:46:41.47 1.0 undecidable manual P 33 14.7741 111 0.05 25
IV.NRCA.HHZ. 2023-03-27T04:46:41.51 0.1 positive manual P 135 14.4744 111 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.3 0.00020700000000000002 0.18 AML other m 2023-03-27T04:46:43.41
IV.CESI.HHE. ML:1.0 0.0001175 0.24 AML other m 2023-03-27T04:46:43.53
IV.FDMO.HHN. ML:1.2 0.00012734999999999998 0.18 AML other m 2023-03-27T04:46:44.14
IV.FDMO.HHE. ML:1.1 0.00010300000000000001 0.44 AML other m 2023-03-27T04:46:44.19
IV.NRCA.HHN. ML:1.2 0.00014399999999999998 1.2 AML other m 2023-03-27T04:46:44.34
IV.NRCA.HHE. ML:1.1 0.0001235 1.44 AML other m 2023-03-27T04:46:44.98
IV.ASSB.HHN. ML:1.2 0.00008505000000000001 0.82 AML other m 2023-03-27T04:46:48.54
IV.ASSB.HHE. ML:1.2 0.0000702 1.32 AML other m 2023-03-27T04:46:49.69
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