Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 18-09-2024 and time 11:23:49 (UTC) in region 3 km N Valtopina (PG)

A magnitude ML 1.2 earthquake occured in region: 3 km N Valtopina (PG), on

  • 18-09-2024 11:23:49 (UTC)
  • 18-09-2024 13:23:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0910, 12.7530 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.

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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 3 1398 1398
Nocera Umbra PG 4 5839 7237
Assisi PG 11 28299 35536
Spello PG 13 8645 44181
Valfabbrica PG 15 3389 47570
Foligno PG 15 57155 104725
Gualdo Tadino PG 16 15208 119933
Serravalle di Chienti MC 16 1070 121003
Bastia Umbra PG 17 21874 142877
Sefro MC 17 422 143299
Cannara PG 17 4305 147604
Fiuminata MC 18 1402 149006

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km N of Foligno (57155 inhabitants)
30 Km E of Perugia (166134 inhabitants)
59 Km N of Terni (111501 inhabitants)
82 Km SE of Arezzo (99543 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
87 Km S of Fano (60888 inhabitants)
91 Km NW of Teramo (54892 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
92 Km S of Pesaro (94582 inhabitants)
98 Km NW of L'Aquila (69753 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 2024-09-18
11:23:49		 43.0907 12.753 11 2024-09-18
11:29:55		 Sala Sismica INGV-Roma 131538031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-09-18 11:23:49 ± 0.09
Latitude 43.0907 ± 0.0036
Longitude 12.7530 ± 0.0037
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 131538031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 338
Semi-minor axis of confidence ellipse (meter) 317
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 172
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.23922
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 131538031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-09-18 11:29:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2024-09-18T11:23:59.56 0.6 undecidable manual S 316 26.5512 50 -0.1 47
IV.SNTG.HHZ. 2024-09-18T11:23:58.74 0.6 undecidable manual S 40 23.754 50 -0.16 47
IV.MML1.HNE. 2024-09-18T11:23:57.11 0.6 undecidable manual S 82 17.871 120 -0.08 49
IV.CESI.HHZ. 2024-09-18T11:23:56.45 0.6 undecidable manual S 128 15.5733 124 -0.05 49
IV.SNTG.HHZ. 2024-09-18T11:23:55.49 0.1 undecidable manual P 40 23.754 50 0.36 92
IV.ATCC.EHZ. 2024-09-18T11:23:55.99 0.6 undecidable manual S 319 13.875 127 -0.05 50
IV.MURB.HHZ. 2024-09-18T11:23:55.47 1.0 undecidable manual P 316 26.5512 50 -0.1 24
IV.ASSB.HHZ. 2024-09-18T11:23:54.76 0.6 undecidable manual S 235 9.2796 138 -0.1 50
IV.MML1.HNE. 2024-09-18T11:23:54.09 0.1 undecidable manual P 82 17.871 120 -0.05 98
IV.ATCC.EHZ. 2024-09-18T11:23:53.51 0.1 positive manual P 319 13.875 127 0.03 99
IV.CESI.HHZ. 2024-09-18T11:23:53.78 1.0 undecidable manual P 128 15.5733 124 0.04 25
IV.ASSB.HHZ. 2024-09-18T11:23:52.86 0.1 undecidable manual P 235 9.2796 138 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.4 0.0003265 0.08 AML other m 2024-09-18T11:23:54.89
IV.ASSB.HHE. ML:1.3 0.00026000000000000003 0.08 AML other m 2024-09-18T11:23:54.85
IV.ATCC.EHN. ML:1.4 0.000243 0.32 AML other m 2024-09-18T11:23:56.40
IV.ATCC.EHE. ML:1.4 0.0002565 0.42 AML other m 2024-09-18T11:23:57.21
IV.CESI.HHE. ML:0.4 0.000024541735 0.08 AML other m 2024-09-18T11:23:57.05
IV.CESI.HHN. ML:0.6 0.000032700336750000005 0.12 AML other m 2024-09-18T11:23:57.47
IV.MURB.HHE. ML:1.1 0.00006487751 0.18 AML other m 2024-09-18T11:24:00.54
IV.MURB.HHN. ML:1.0 0.000053092653500000004 0.42 AML other m 2024-09-18T11:24:02.37
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