Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 18-04-2023 and time 16:31:04 (Italy) in region 4 km S Poggio San Vicino (MC)

A magnitude ML 0.9 earthquake occured in region: 4 km S Poggio San Vicino (MC), on

  • 18-04-2023 14:31:04 (UTC)
  • 18-04-2023 16:31:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3420, 13.0940 at 15 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Poggio San Vicino MC 4 246 246
Apiro MC 7 2280 2526
Cerreto d'Esi AN 9 3817 6343
Cingoli MC 11 10352 16695
Gagliole MC 12 620 17315
Matelica MC 12 9981 27296
Cupramontana AN 12 4756 32052
Staffolo AN 13 2253 34305
Serra San Quirico AN 13 2850 37155
San Paolo di Jesi AN 14 933 38088
San Severino Marche MC 14 12726 50814
Castelraimondo MC 15 4587 55401
Mergo AN 15 1037 56438
Fabriano AN 15 31480 87918
Maiolati Spontini AN 15 6248 94166
Esanatoglia MC 16 2034 96200
Rosora AN 16 1985 98185
Monte Roberto AN 16 3061 101246
Genga AN 16 1797 103043
Castelbellino AN 17 4947 107990
Castelplanio AN 17 3540 111530
Treia MC 18 9403 120933
Poggio San Marcello AN 19 693 121626
Serrapetrona MC 20 966 122592

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km SW of Ancona (100861 inhabitants)
53 Km NE of Foligno (57155 inhabitants)
56 Km S of Fano (60888 inhabitants)
63 Km E of Perugia (166134 inhabitants)
65 Km S of Pesaro (94582 inhabitants)
91 Km SE of Rimini (147750 inhabitants)
91 Km NW of Teramo (54892 inhabitants)
94 Km NE of Terni (111501 inhabitants)
99 Km E 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
Bulletin
Rev1000 		ML 0.9 2023-04-18
14:31:04		 43.3423 13.0935 15 2024-03-01
17:18:20		 Bollettino Sismico Italiano INGV 125132421
Reviewed
Rev100 		ML 1.0 2023-04-18
14:31:04		 43.345 13.1197 19 2023-04-18
14:56:52		 Sala Sismica INGV-Roma 116491141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-18 14:31:04 ± 0.12
Latitude 43.3423 ± 0.0045
Longitude 13.0935 ± 0.0062
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 125132421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 506
Semi-minor axis of confidence ellipse (meter) 379
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
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 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.01439
Epicentral distance of station farthest from the epicenter (degree) 0.62593
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 125132421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-02-08 16:37:20

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 116491141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-18 14:56:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATPC.HHZ. 2023-04-18T14:31:21.94 0.6 undecidable manual S 287 53.502 96 0.48 42
7F.SIB1.EHE. 2023-04-18T14:31:21.61 0.6 undecidable manual S 164 51.7038 96 0.64 38
IV.PIEI.HNZ. 2023-04-18T14:31:20.56 0.6 undecidable manual S 296 49.8168 96 0.08 46
IV.ATBU.EHZ. 2023-04-18T14:31:19.03 0.6 undecidable manual S 289 46.3203 97 -0.53 40
IV.CESI.HHZ. 2023-04-18T14:31:18.32 0.6 undecidable manual S 202 40.4262 99 0.33 44
IV.ATSC.EHZ. 2023-04-18T14:31:16.16 0.6 undecidable manual S 286 34.0437 101 -0.15 45
IV.FDMO.HHZ. 2023-04-18T14:31:16.20 0.6 undecidable manual S 181 33.9438 101 -0.09 47
IV.PESA.HHE. 2023-04-18T14:31:16.31 1.0 undecidable manual P 343 69.4749 94 -0.5 20
IV.CSP1.EHZ. 2023-04-18T14:31:15.28 0.6 undecidable manual S 162 29.2485 104 0.23 45
IV.NARO.HHZ. 2023-04-18T14:31:14.84 1.0 undecidable manual P 306 50.9157 96 0.88 18
7F.SIB1.EHE. 2023-04-18T14:31:14.05 0.1 undecidable manual P 164 51.7038 96 -0.03 91
IV.ATPC.HHZ. 2023-04-18T14:31:14.81 0.1 undecidable manual P 287 53.502 96 0.45 83
IV.PIEI.HNZ. 2023-04-18T14:31:14.14 1.0 undecidable manual P 296 49.8168 96 0.35 21
IV.MML1.EHZ. 2023-04-18T14:31:14.72 0.6 undecidable manual S 201 27.2505 105 0.18 46
IV.ATBU.EHZ. 2023-04-18T14:31:13.45 0.6 undecidable manual P 289 46.3203 97 0.19 45
IV.PF6.EHN. 2023-04-18T14:31:13.83 0.6 undecidable manual S 160 24.0537 109 0.09 47
IV.CESI.HHZ. 2023-04-18T14:31:12.11 0.1 undecidable manual P 202 40.4262 99 -0.25 89
IV.SNTG.HHZ. 2023-04-18T14:31:11.63 0.6 undecidable manual S 232 15.6732 123 -0.09 47
IV.ATSC.EHZ. 2023-04-18T14:31:11.68 1.0 undecidable manual P 286 34.0437 101 0.29 22
IV.FDMO.HHZ. 2023-04-18T14:31:11.02 0.1 undecidable manual P 181 33.9438 101 -0.35 89
IV.MML1.EHZ. 2023-04-18T14:31:10.09 0.6 positive manual P 201 27.2505 105 -0.28 45
IV.CING.HHZ. 2023-04-18T14:31:10.46 0.6 undecidable manual S 66 8.9799 143 0.06 49
IV.CSP1.EHZ. 2023-04-18T14:31:10.51 0.6 undecidable manual P 162 29.2485 104 -0.15 47
IV.EL6.EHZ. 2023-04-18T14:31:09.98 0.6 undecidable manual S 155 1.5984 173 0.34 47
IV.PF6.EHN. 2023-04-18T14:31:09.64 0.1 undecidable manual P 160 24.0537 109 -0.26 92
IV.SNTG.HHZ. 2023-04-18T14:31:08.53 0.1 undecidable manual P 232 15.6732 123 -0.2 93
IV.EL6.EHZ. 2023-04-18T14:31:07.55 0.1 negative manual P 155 1.5984 173 0.02 100
IV.CING.HHZ. 2023-04-18T14:31:07.83 0.1 negative manual P 66 8.9799 143 -0.15 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CING.HHN. ML:1.0 0.00008874999999999999 1.2 AML other m 2023-04-18T14:31:10.65
IV.CING.HHE. ML:1.2 0.00016 0.24 AML other m 2023-04-18T14:31:10.76
IV.EL6.EHN. ML:0.9 0.00010195 0.92 AML other m 2023-04-18T14:31:10.85
IV.EL6.EHE. ML:1.0 0.00010899999999999999 1.1 AML other m 2023-04-18T14:31:11.66
IV.SNTG.HHN. ML:1.0 0.00008455 1.84 AML other m 2023-04-18T14:31:11.95
IV.SNTG.HHE. ML:0.7 0.00003455 1.44 AML other m 2023-04-18T14:31:11.96
IV.MML1.EHN. ML:0.8 0.0000308 0.52 AML other m 2023-04-18T14:31:14.90
IV.MML1.EHE. ML:0.8 0.00003375 0.18 AML other m 2023-04-18T14:31:14.95
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