Earthquake with magnitude of ML 0.5 on date 22-10-2023 and time 07:17:49 (Italy) in region 6 km E Nocera Umbra (PG)

A magnitude ML 0.5 earthquake occured in region: 6 km E Nocera Umbra (PG), on

  • 22-10-2023 05:17:49 (UTC)
  • 22-10-2023 07:17:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0940, 12.8610 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Nocera Umbra PG 6 5839 5839
Serravalle di Chienti MC 8 1070 6909
Sefro MC 9 422 7331
Valtopina PG 9 1398 8729
Fiuminata MC 12 1402 10131
Pioraco MC 14 1134 11265
Muccia MC 15 915 12180
Monte Cavallo MC 16 145 12325
Pieve Torina MC 16 1458 13783
Gualdo Tadino PG 17 15208 28991
Camerino MC 18 6974 35965
Pievebovigliana MC 19 866 36831
Esanatoglia MC 19 2034 38865
Spello PG 19 8645 47510
Fiordimonte MC 20 202 47712
Foligno PG 20 57155 104867

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Foligno (57155 inhabitants)
38 Km E of Perugia (166134 inhabitants)
62 Km N of Terni (111501 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
84 Km NW of Teramo (54892 inhabitants)
84 Km S of Fano (60888 inhabitants)
89 Km E of Arezzo (99543 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
94 Km NW of L'Aquila (69753 inhabitants)
97 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 0.5 2023-10-22
05:17:49
43.0943 12.8612 9 2023-10-22
05:32:36
Sala Sismica INGV-Roma 122278941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-22 05:17:49 ± 0.16
Latitude 43.0943 ± 0.0045
Longitude 12.8612 ± 0.0037
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 122278941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 500
Semi-minor axis of confidence ellipse (meter) 62
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 167
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25091
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 122278941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-22 05:32:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SRES.HHZ. 2023-10-22T05:18:15.67 3.0 undecidable manual Sg 0.48 0
IV.ARVD.HHZ. 2023-10-22T05:18:03.72 3.0 undecidable manual Sn -0.03 0
IV.CRE.HHZ. 2023-10-22T05:17:58.37 3.0 undecidable manual Pn -0.54 0
IV.FDMO.HHZ. 2023-10-22T05:17:56.95 0.1 undecidable manual S 109 19.4694 115 -0.16 96
IV.SNTG.HHZ. 2023-10-22T05:17:56.73 0.1 undecidable manual S 20 18.9699 115 -0.23 95
IV.NARO.HHZ. 2023-10-22T05:17:56.58 3.0 undecidable manual P 0.63 0
IV.ASSB.HHZ. 2023-10-22T05:17:56.43 0.1 undecidable manual S 251 17.3715 117 -0.04 99
IV.CSP1.EHZ. 2023-10-22T05:17:55.63 0.1 undecidable manual P 90 27.8499 108 0.08 97
IV.MML1.EHZ. 2023-10-22T05:17:54.25 0.1 undecidable manual S 77 9.1797 134 0.11 99
IV.SNTG.HHZ. 2023-10-22T05:17:54.04 0.1 undecidable manual P 20 18.9699 115 0.15 97
IV.ASSB.HHZ. 2023-10-22T05:17:53.61 0.1 undecidable manual P 251 17.3715 117 0 100
IV.FDMO.HHZ. 2023-10-22T05:17:53.87 0.1 undecidable manual P 109 19.4694 115 -0.11 98
IV.MML1.EHZ. 2023-10-22T05:17:52.45 0.1 undecidable manual P 77 9.1797 134 0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHE. ML:0.6 0.0000531 0.12 AML other m 2023-10-22T05:17:54.44
IV.MML1.EHN. ML:0.5 0.00004575 0.42 AML other m 2023-10-22T05:18:16.40
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