Earthquake with magnitude of ML 0.9 on date 21-09-2023 and time 19:19:26 (UTC) in region 1 km SW Sellano (PG)

A magnitude ML 0.9 earthquake occured in region: 1 km SW Sellano (PG), on

  • 21-09-2023 19:19:26 (UTC)
  • 21-09-2023 21:19:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8840, 12.9160 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.

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 1 1079 1079
Cerreto di Spoleto PG 7 1075 2154
Preci PG 10 724 2878
Campello sul Clitunno PG 13 2442 5320
Vallo di Nera PG 13 364 5684
Trevi PG 14 8469 14153
Monte Cavallo MC 14 145 14298
Visso MC 15 1107 15405
Norcia PG 18 4957 20362
Sant'Anatolia di Narco PG 18 564 20926
Foligno PG 19 57155 78081
Poggiodomo PG 19 117 78198
Castelsantangelo sul Nera MC 19 281 78479
Ussita MC 19 444 78923
Cascia PG 20 3217 82140

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
69 Km W of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
95 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 0.9 2023-09-21
19:19:26
42.8843 12.9162 11 2023-09-21
19:27:36
Sala Sismica INGV-Roma 121321741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-21 19:19:26 ± 0.04
Latitude 42.8843 ± 0.0018
Longitude 12.9162 ± 0.0025
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 121321741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 210
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 169
Circular confidence region, given by single value of horizontal uncertainty (meter) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30127
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 121321741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-21 19:27:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RRL.HHZ. 2023-09-21T19:21:19.45 3.0 undecidable manual Sn -1.77 0
IV.MRLC.HNZ. 2023-09-21T19:21:02.76 3.0 undecidable manual Sg 17.139999 0
GU.MGRO.HHZ. 2023-09-21T19:20:58.96 3.0 undecidable manual Sn 1.63 0
IV.MCRV.HHZ. 2023-09-21T19:20:55.36 3.0 undecidable manual Sg 14.19 0
IV.SOLUN.HHZ. 2023-09-21T19:20:50.24 3.0 undecidable manual Pg 16.08 0
MN.TRI.HHZ. 2023-09-21T19:20:39.23 3.0 undecidable manual Sn 0.79 0
IV.MBFT.HHZ. 2023-09-21T19:20:36.73 3.0 undecidable manual Pn 1.21 0
OX.CIMO.HHZ. 2023-09-21T19:20:09.19 3.0 negative manual Pn -2.31 0
MN.TRI.HHZ. 2023-09-21T19:20:03.64 3.0 negative manual Pn -1.41 0
IV.ZCCA.HNZ. 2023-09-21T19:19:50.44 3.0 undecidable manual Pg 0.04 0
IV.GIUL.HHZ. 2023-09-21T19:19:45.39 3.0 undecidable manual Pn -1.71 0
IV.MMO1.EHZ. 2023-09-21T19:19:38.43 0.6 undecidable manual S 87 33.4443 50 0.12 48
IV.CSP1.EHZ. 2023-09-21T19:19:38.29 0.6 undecidable manual S 45 32.8449 50 0.14 48
IV.MOMA.HHZ. 2023-09-21T19:19:37.66 1.0 undecidable manual S 253 29.5482 50 0.39 23
IV.MML1.EHZ. 2023-09-21T19:19:36.35 0.6 undecidable manual S 10 25.8519 50 0.08 49
IV.ASSB.HHZ. 2023-09-21T19:19:36.49 0.3 undecidable manual S 310 27.2505 50 -0.18 72
IV.FDMO.HHZ. 2023-09-21T19:19:35.11 0.3 undecidable manual S 39 21.867 50 -0.11 74
IV.GAVE.EHZ. 2023-09-21T19:19:35.06 0.6 undecidable manual S 185 21.3675 50 -0.03 50
IV.MOMA.HHZ. 2023-09-21T19:19:33.18 1.0 undecidable manual P 253 29.5482 50 0.29 23
IT.MTCL.HGZ. 2023-09-21T19:19:33.03 1.0 undecidable manual S 29 13.875 128 -0.01 25
IV.MMO1.EHZ. 2023-09-21T19:19:33.54 0.6 undecidable manual P 87 33.4443 50 0.05 49
IV.NRCA.HHZ. 2023-09-21T19:19:33.79 0.3 undecidable manual S 109 17.0718 123 -0.15 74
IV.CSP1.EHZ. 2023-09-21T19:19:33.47 1.0 negative manual P 45 32.8449 50 0.07 24
IV.ASSB.HHZ. 2023-09-21T19:19:32.42 0.3 undecidable manual P 310 27.2505 50 -0.12 73
IV.CESI.HHE. 2023-09-21T19:19:32.91 0.6 undecidable manual S 356 13.3755 129 0 51
IV.MML1.EHZ. 2023-09-21T19:19:32.27 0.1 undecidable manual P 10 25.8519 50 -0.04 99
IV.GAVE.EHZ. 2023-09-21T19:19:31.60 0.1 undecidable manual P 185 21.3675 50 -0.03 100
IV.FDMO.HHZ. 2023-09-21T19:19:31.68 0.6 positive manual P 39 21.867 50 -0.02 50
IV.NRCA.HHZ. 2023-09-21T19:19:30.93 1.0 undecidable manual P 109 17.0718 123 -0.03 25
IV.FEMA.HNZ. 2023-09-21T19:19:30.68 1.0 undecidable manual P 51 13.875 128 0.24 24
IT.MTCL.HGZ. 2023-09-21T19:19:30.51 1.0 undecidable manual P 29 13.875 128 0.06 25
IV.CESI.HHE. 2023-09-21T19:19:30.53 0.6 undecidable manual P 356 13.3755 129 0.17 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.9 0.000056 0.4 AML other m 2023-09-21T19:19:35.27
IV.FDMO.HHE. ML:0.8 0.0000429 0.32 AML other m 2023-09-21T19:19:35.50
IV.GAVE.EHN. ML:0.8 0.000046649999999999996 0.58 AML other m 2023-09-21T19:19:35.27
IV.GAVE.EHE. ML:0.9 0.00005645 1.28 AML other m 2023-09-21T19:19:35.18
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