Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 09-04-2023 and time 09:56:25 (UTC) in region 2 km E Fiordimonte (MC)

A magnitude ML 0.4 earthquake occured in region: 2 km E Fiordimonte (MC), on

  • 09-04-2023 09:56:25 (UTC)
  • 09-04-2023 11:56:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0460, 13.1150 at 2 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
Fiordimonte MC 2 202 202
Pievebovigliana MC 3 866 1068
Fiastra MC 4 559 1627
Acquacanina MC 5 121 1748
Pieve Torina MC 5 1458 3206
Muccia MC 7 915 4121
Camerino MC 11 6974 11095
Monte Cavallo MC 11 145 11240
Bolognola MC 11 142 11382
Ussita MC 11 444 11826
Visso MC 13 1107 12933
Serravalle di Chienti MC 14 1070 14003
Cessapalombo MC 14 512 14515
Caldarola MC 14 1823 16338
Sarnano MC 15 3264 19602
Camporotondo di Fiastrone MC 16 563 20165
Serrapetrona MC 16 966 21131
Belforte del Chienti MC 17 1886 23017
Castelsantangelo sul Nera MC 17 281 23298
Sefro MC 18 422 23720
San Ginesio MC 18 3498 27218
Pioraco MC 18 1134 28352
Gualdo MC 18 815 29167
Castelraimondo MC 19 4587 33754
Preci PG 20 724 34478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
59 Km E of Perugia (166134 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
66 Km NE of Terni (111501 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
81 Km N of L'Aquila (69753 inhabitants)
89 Km S of Fano (60888 inhabitants)
98 Km S of Pesaro (94582 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 0.4 2023-04-09
09:56:25		 43.0462 13.1147 2 2023-04-09
10:14:21		 Sala Sismica INGV-Roma 116202601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-09 09:56:25 ± 0.15
Latitude 43.0462 ± 0.0063
Longitude 13.1147 ± 0.0062
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116202601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 720
Semi-minor axis of confidence ellipse (meter) 112
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28329
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 116202601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-09 10:14:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2023-04-09T09:56:41.49 3.0 undecidable manual Sg 0.32 0
IV.ARVD.HHZ. 2023-04-09T09:56:34.51 3.0 undecidable manual S -0.4 0
IV.CESI.HHZ. 2023-04-09T09:56:32.18 0.3 undecidable manual S 255 17.6712 97 0.39 92
IV.EL6.EHZ. 2023-04-09T09:56:31.36 0.3 undecidable manual P 358 31.4463 94 -0.57 86
IV.NRCA.HHZ. 2023-04-09T09:56:30.64 0.3 undecidable manual P 180 23.5542 96 0.28 94
IV.MURB.HHZ. 2023-04-09T09:56:30.24 3.0 undecidable manual P -0.13 0
IV.MML1.EHZ. 2023-04-09T09:56:30.75 0.3 undecidable manual S 303 13.7751 100 0.29 95
7F.SIB1.EHZ. 2023-04-09T09:56:29.56 0.3 undecidable manual P 143 20.9679 96 -0.29 94
IV.CESI.HHZ. 2023-04-09T09:56:29.01 0.3 undecidable manual P 255 17.6712 97 -0.17 97
IV.CSP1.EHZ. 2023-04-09T09:56:29.27 0.3 undecidable manual S 55 8.88 105 0.47 92
IV.PF6.EHZ. 2023-04-09T09:56:29.81 0.3 undecidable manual S 32 12.0768 101 -0.06 100
IV.MML1.EHZ. 2023-04-09T09:56:28.29 0.3 undecidable manual P 303 13.7751 100 -0.12 98
IV.PF6.EHZ. 2023-04-09T09:56:27.96 0.3 undecidable manual P 32 12.0768 101 -0.11 99
IV.CSP1.EHZ. 2023-04-09T09:56:27.62 0.3 undecidable manual P 55 8.88 105 0.17 98
IV.FDMO.HHZ. 2023-04-09T09:56:26.15 0.3 undecidable manual P 244 2.4975 133 -0.14 100
IV.FDMO.HHZ. 2023-04-09T09:56:26.64 0.3 undecidable manual S 244 2.4975 133 -0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.6 0.000025500000000000003 0.94 AML other m 2023-04-09T09:56:36.71
IV.NRCA.HHE. ML:0.6 0.00002495 0.42 AML other m 2023-04-09T09:56:36.43
IV.MML1.EHE. ML:0.3 0.000023553770000000003 0.16 AML other m 2023-04-09T09:56:31.36
IV.MML1.EHN. ML:0.4 0.000034845445 0.1856 AML other m 2023-04-09T09:56:31.58
IV.CESI.HHE. ML:0.2 0.00001730839 0.2816 AML other m 2023-04-09T09:56:32.80
IV.CESI.HHN. ML:0.2 0.000016817099000000003 0.32 AML other m 2023-04-09T09:56:34.71
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