Earthquake with magnitude of ML 0.8 on date 26-09-2023 and time 01:55:55 (UTC) in region 6 km NE Sellano (PG)

A magnitude ML 0.8 earthquake occured in region: 6 km NE Sellano (PG), on

  • 26-09-2023 01:55:55 (UTC)
  • 26-09-2023 03:55:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9370, 12.9660 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.

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
Monte Cavallo MC 7 145 1224
Preci PG 9 724 1948
Visso MC 10 1107 3055
Cerreto di Spoleto PG 14 1075 4130
Pieve Torina MC 14 1458 5588
Ussita MC 14 444 6032
Serravalle di Chienti MC 15 1070 7102
Fiordimonte MC 15 202 7304
Castelsantangelo sul Nera MC 16 281 7585
Pievebovigliana MC 17 866 8451
Muccia MC 17 915 9366
Trevi PG 19 8469 17835
Norcia PG 19 4957 22792
Fiastra MC 19 559 23351
Acquacanina MC 20 121 23472

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
51 Km E of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
91 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 0.8 2023-09-26
01:55:55
42.9373 12.9658 10 2023-09-26
02:10:53
Sala Sismica INGV-Roma 121462861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-26 01:55:55 ± 0.05
Latitude 42.9373 ± 0.0018
Longitude 12.9658 ± 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 121462861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 281
Semi-minor axis of confidence ellipse (meter) 52
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.34354
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 121462861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-26 02:10:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-09-26T01:56:04.98 0.6 undecidable manual S 48 25.8519 50 -0.02 49
IV.ATCC.EHZ. 2023-09-26T01:56:02.79 0.3 undecidable manual P 316 38.1285 50 -0.04 72
IV.NRCA.HHZ. 2023-09-26T01:56:02.09 0.1 undecidable manual S 134 16.6722 121 -0.06 99
IV.FDMO.HHZ. 2023-09-26T01:56:01.57 0.1 undecidable manual S 42 14.7741 124 -0.02 100
IV.CSP1.EHZ. 2023-09-26T01:56:00.91 0.1 undecidable manual P 48 25.8519 50 -0.03 98
IV.NRCA.HHZ. 2023-09-26T01:55:59.34 0.1 undecidable manual P 134 16.6722 121 0.04 99
IV.CESI.HHZ. 2023-09-26T01:55:59.97 0.1 undecidable manual S 326 8.9799 138 -0.09 99
IV.FDMO.HHZ. 2023-09-26T01:55:59.05 0.1 undecidable manual P 42 14.7741 124 0.08 99
IV.CESI.HHZ. 2023-09-26T01:55:58.20 0.1 undecidable manual P 326 8.9799 138 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.8 0.000088 0.56 AML other m 2023-09-26T01:56:00.26
IV.CESI.HHE. ML:0.7 0.0000654 0.32 AML other m 2023-09-26T01:56:00.20
IV.NRCA.HHN. ML:1.0 0.00007845 0.12 AML other m 2023-09-26T01:56:02.28
IV.NRCA.HHE. ML:0.8 0.00005415 1.24 AML other m 2023-09-26T01:56:02.89
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