Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 11-05-2023 and time 14:06:34 (UTC) in region 7 km SE Valtopina (PG)

A magnitude ML 0.8 earthquake occured in region: 7 km SE Valtopina (PG), on

  • 11-05-2023 14:06:34 (UTC)
  • 11-05-2023 16:06:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0050, 12.7930 at 10 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
Valtopina PG 7 1398 1398
Foligno PG 9 57155 58553
Spello PG 10 8645 67198
Nocera Umbra PG 12 5839 73037
Trevi PG 15 8469 81506
Serravalle di Chienti MC 15 1070 82576
Assisi PG 16 28299 110875
Montefalco PG 17 5679 116554
Sellano PG 17 1079 117633
Bevagna PG 17 5081 122714
Cannara PG 17 4305 127019
Monte Cavallo MC 17 145 127164

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NE of Foligno (57155 inhabitants)
35 Km E of Perugia (166134 inhabitants)
51 Km N of Terni (111501 inhabitants)
84 Km W of Teramo (54892 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
95 Km S of Fano (60888 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 0.8 2023-05-11
14:06:34		 43.0047 12.7933 10 2023-05-11
14:18:01		 Sala Sismica INGV-Roma 117251241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-11 14:06:34 ± 0.06
Latitude 43.0047 ± 0.0054
Longitude 12.7933 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117251241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 592
Semi-minor axis of confidence ellipse (meter) 265
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 355
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
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 14
Number of defining phases 14
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) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.31296
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 117251241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-11 14:18:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2023-05-11T14:06:45.45 0.3 undecidable manual S 126 32.2455 50 -0.13 73
IV.MOMA.HHN. 2023-05-11T14:06:44.90 0.3 undecidable manual S 219 28.749 50 0.26 72
IV.FDMO.HHZ. 2023-05-11T14:06:43.25 0.3 undecidable manual S 81 24.0537 112 -0.05 76
IV.CSP1.EHZ. 2023-05-11T14:06:41.12 0.3 undecidable manual P 74 34.743 50 -0.05 74
IV.MML1.EHZ. 2023-05-11T14:06:41.89 0.3 undecidable manual S 50 18.87 118 0.25 73
IV.MOMA.HHN. 2023-05-11T14:06:40.27 0.6 undecidable manual P 219 28.749 50 0.02 50
IV.NRCA.HHZ. 2023-05-11T14:06:40.65 0.3 undecidable manual P 126 32.2455 50 -0.14 73
IV.SNTG.HHZ. 2023-05-11T14:06:40.43 0.3 undecidable manual P 23 30.2475 50 -0.05 75
IV.FDMO.HHZ. 2023-05-11T14:06:39.27 0.3 undecidable manual P 81 24.0537 112 -0.21 73
IV.ASSB.HHZ. 2023-05-11T14:06:39.39 0.1 undecidable manual S 291 11.6772 130 -0.19 100
IV.MML1.EHZ. 2023-05-11T14:06:38.62 0.3 undecidable manual P 50 18.87 118 0.1 75
IV.CESI.HHZ. 2023-05-11T14:06:38.86 0.3 undecidable manual S 90 8.9799 138 -0.05 77
IV.CESI.HHZ. 2023-05-11T14:06:37.32 0.6 undecidable manual P 90 8.9799 138 0.38 48
IV.ASSB.HHZ. 2023-05-11T14:06:37.36 0.3 undecidable manual P 291 11.6772 130 0.03 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.2 0.00016499999999999997 0.52 AML other m 2023-05-11T14:06:39.48
IV.ASSB.HHE. ML:1.1 0.000141 0.44 AML other m 2023-05-11T14:06:39.55
IV.CESI.HHE. ML:0.7 0.00007615552 0.16 AML other m 2023-05-11T14:06:39.58
IV.CESI.HHN. ML:0.6 0.00004863584 0.1024 AML other m 2023-05-11T14:06:40.36
IV.MML1.EHE. ML:0.4 0.00002041373 0.256 AML other m 2023-05-11T14:06:41.91
IV.FDMO.HHE. ML:0.8 0.00003572566500000001 2.8032 AML other m 2023-05-11T14:06:43.80
IV.FDMO.HHN. ML:0.8 0.000036705515000000004 1.0176 AML other m 2023-05-11T14:06:44.12
IV.NRCA.HHE. ML:0.8 0.0000305652365 0.1024 AML other m 2023-05-11T14:06:46.18
IV.NRCA.HHN. ML:0.9 0.000034020565 0.1024 AML other m 2023-05-11T14:06:45.84
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