Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 16-01-2024 and time 08:54:35 (Italy) in region 4 km E Castel Ritaldi (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km E Castel Ritaldi (PG), on

  • 16-01-2024 07:54:35 (UTC)
  • 16-01-2024 08:54:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8240, 12.7190 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.

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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
Castel Ritaldi PG 4 3278 3278
Campello sul Clitunno PG 5 2442 5720
Trevi PG 7 8469 14189
Montefalco PG 10 5679 19868
Spoleto PG 10 38218 58086
Giano dell'Umbria PG 12 3846 61932
Vallo di Nera PG 13 364 62296
Sant'Anatolia di Narco PG 14 564 62860
Foligno PG 15 57155 120015
Bevagna PG 15 5081 125096
Scheggino PG 15 461 125557
Cerreto di Spoleto PG 16 1075 126632
Gualdo Cattaneo PG 16 6155 132787
Massa Martana PG 17 3770 136557
Sellano PG 19 1079 137636
Spello PG 19 8645 146281

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km S of Foligno (57155 inhabitants)
30 Km N of Terni (111501 inhabitants)
42 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
83 Km W of Teramo (54892 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
99 Km SE of Arezzo (99543 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 1.1 2024-01-16
07:54:35		 42.8237 12.7192 11 2024-01-16
08:16:41		 Sala Sismica INGV-Roma 124673791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-16 07:54:35 ± 0.07
Latitude 42.8237 ± 0.0045
Longitude 12.7192 ± 0.0049
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 124673791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 441
Semi-minor axis of confidence ellipse (meter) 408
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 175
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.11062
Epicentral distance of station farthest from the epicenter (degree) 0.44516
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 124673791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-16 08:16:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2024-01-16T07:54:52.13 0.3 undecidable manual S 53 49.4172 50 0.42 65
IV.FDMO.HHZ. 2024-01-16T07:54:48.39 0.3 undecidable manual S 52 38.1285 50 -0.31 68
IV.MML1.EHZ. 2024-01-16T07:54:48.65 0.6 undecidable manual S 32 38.1285 50 -0.05 48
IV.NRCA.HHZ. 2024-01-16T07:54:47.07 0.6 undecidable manual S 88 32.1456 50 -0.04 49
IT.MTCL.HGZ. 2024-01-16T07:54:46.45 0.6 undecidable manual S 50 29.5482 50 0.03 49
IV.CESI.HHZ. 2024-01-16T07:54:45.00 0.6 undecidable manual S 37 25.1526 50 -0.23 47
IV.ASSB.HHZ. 2024-01-16T07:54:45.49 0.6 undecidable manual S 349 24.753 50 0.35 46
IV.CSP1.EHZ. 2024-01-16T07:54:45.22 1.0 negative manual P 53 49.4172 50 0.17 23
IV.CESX.HHZ. 2024-01-16T07:54:45.72 0.6 undecidable manual S 204 26.1516 50 0.2 47
IV.GAVE.EHZ. 2024-01-16T07:54:44.18 0.6 undecidable manual S 136 20.3685 117 0.27 47
IV.LNSS.HHZ. 2024-01-16T07:54:43.09 0.1 undecidable manual P 133 35.8419 50 0.13 95
IV.FDMO.HHZ. 2024-01-16T07:54:43.23 1.0 positive manual P 52 38.1285 50 -0.08 24
IV.MML1.EHZ. 2024-01-16T07:54:43.33 1.0 undecidable manual P 32 38.1285 50 0.02 24
IV.NRCA.HHZ. 2024-01-16T07:54:42.53 0.6 undecidable manual P 88 32.1456 50 0.14 48
ZO.PDN12.EHZ. 2024-01-16T07:54:42.53 0.6 undecidable manual S 91 16.0728 123 -0.1 49
IT.MTCL.HGZ. 2024-01-16T07:54:41.69 0.1 undecidable manual P 50 29.5482 50 -0.31 92
IV.ASSB.HHZ. 2024-01-16T07:54:41.46 0.1 positive manual P 349 24.753 50 0.21 95
IT.GNU.HGZ. 2024-01-16T07:54:41.44 0.6 undecidable manual S 260 12.2766 131 -0.13 49
IV.CESX.HHZ. 2024-01-16T07:54:41.01 0.1 undecidable manual P 204 26.1516 50 -0.46 90
IV.GAVE.EHZ. 2024-01-16T07:54:41.01 0.6 negative manual P 136 20.3685 117 0.46 45
IV.CESI.HHZ. 2024-01-16T07:54:41.33 0.3 undecidable manual P 37 25.1526 50 0.02 74
IT.GNU.HGZ. 2024-01-16T07:54:39.26 0.1 undecidable manual P 260 12.2766 131 0.07 100
ZO.PDN12.EHZ. 2024-01-16T07:54:39.61 0.1 undecidable manual P 91 16.0728 123 -0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.0 0.00006275 0.96 AML other m 2024-01-16T07:54:45.40
IV.ASSB.HHN. ML:1.0 0.0000642 0.62 AML other m 2024-01-16T07:54:45.99
IV.GAVE.EHE. ML:1.1 0.00009695 1.74 AML other m 2024-01-16T07:54:46.89
IV.GAVE.EHN. ML:1.1 0.0000839 0.42 AML other m 2024-01-16T07:54:46.44
IV.CESI.HHN. ML:1.1 0.0000731 1.2 AML other m 2024-01-16T07:54:46.29
IV.ASSB.HHE. ML:0.9 0.0000514 0.76 AML other m 2024-01-16T07:54:47.99
IV.NRCA.HHN. ML:1.1 0.000060100000000000004 0.76 AML other m 2024-01-16T07:54:49.51
IV.FDMO.HHN. ML:1.1 0.000044999999999999996 1.12 AML other m 2024-01-16T07:54:49.58
IV.FDMO.HHE. ML:1.0 0.0000381 0.46 AML other m 2024-01-16T07:54:49.64
IV.NRCA.HHE. ML:1.1 0.000060700000000000005 1.24 AML other m 2024-01-16T07:54:50.85
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