Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 18-04-2024 and time 14:00:27 (Italy) in region 4 km W Bolognola (MC)

A magnitude ML 0.4 earthquake occured in region: 4 km W Bolognola (MC), on

  • 18-04-2024 12:00:27 (UTC)
  • 18-04-2024 14:00:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9990, 13.1840 at 13 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
Acquacanina MC 4 121 121
Bolognola MC 4 142 263
Fiastra MC 5 559 822
Ussita MC 7 444 1266
Fiordimonte MC 9 202 1468
Sarnano MC 11 3264 4732
Pievebovigliana MC 11 866 5598
Visso MC 11 1107 6705
Castelsantangelo sul Nera MC 12 281 6986
Pieve Torina MC 12 1458 8444
Cessapalombo MC 14 512 8956
Amandola FM 14 3629 12585
Montefortino FM 14 1178 13763
Muccia MC 15 915 14678
Gualdo MC 15 815 15493
Monte Cavallo MC 15 145 15638
Caldarola MC 16 1823 17461
Montemonaco AP 16 604 18065
Camporotondo di Fiastrone MC 16 563 18628
San Ginesio MC 16 3498 22126
Preci PG 18 724 22850
Camerino MC 18 6974 29824
Belforte del Chienti MC 19 1886 31710
Comunanza AP 19 3166 34876
Serrapetrona MC 20 966 35842

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
65 Km NE of Terni (111501 inhabitants)
66 Km E of Perugia (166134 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
74 Km N of L'Aquila (69753 inhabitants)
95 Km S of Fano (60888 inhabitants)
96 Km NW of Montesilvano (53738 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 2024-04-18
12:00:27		 42.999 13.1838 13 2024-04-18
12:23:21		 Sala Sismica INGV-Roma 126860361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-18 12:00:27 ± 0.29
Latitude 42.9990 ± 0.0072
Longitude 13.1838 ± 0.0148
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126860361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1001
Semi-minor axis of confidence ellipse (meter) 778
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.08004
Epicentral distance of station farthest from the epicenter (degree) 0.38581
Number of stations at which the event was observed 8
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 4
Type of magnitude ML
Reference to an origin 126860361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-18 12:23:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2024-04-18T12:00:35.84 0.6 undecidable manual P 277 42.8238 94 0.79 38
IV.CESI.HNZ. 2024-04-18T12:00:35.66 0.3 undecidable manual S 272 22.6551 102 0.08 73
IV.MML1.EHZ. 2024-04-18T12:00:35.19 0.6 undecidable manual S 307 21.3675 103 -0.06 49
IV.NRCA.HHZ. 2024-04-18T12:00:34.04 0.3 undecidable manual S 197 19.1697 107 -0.65 62
7F.SIB1.HNE. 2024-04-18T12:00:33.26 0.3 undecidable manual S 149 13.4754 120 -0.03 75
IV.CSP1.EHZ. 2024-04-18T12:00:32.80 0.3 undecidable manual S 9 10.4784 131 0.18 72
IV.NRCA.HHZ. 2024-04-18T12:00:32.42 0.1 undecidable manual P 197 19.1697 107 0.98 74
IV.MC2.EHN. 2024-04-18T12:00:32.66 0.3 undecidable manual S 178 9.6792 133 0.18 73
IV.FDMO.HHZ. 2024-04-18T12:00:32.38 0.3 undecidable manual S 298 8.88 137 0.06 75
IV.CESI.HNZ. 2024-04-18T12:00:31.70 0.3 undecidable manual P 272 22.6551 102 -0.26 70
IV.MML1.EHZ. 2024-04-18T12:00:31.45 0.3 undecidable manual P 307 21.3675 103 -0.32 70
IV.MC2.EHN. 2024-04-18T12:00:30.06 0.1 undecidable manual P 178 9.6792 133 -0.11 99
7F.SIB1.HNE. 2024-04-18T12:00:30.37 0.3 undecidable manual P 149 13.4754 120 -0.27 71
IV.CSP1.EHZ. 2024-04-18T12:00:30.18 0.1 undecidable manual P 9 10.4784 131 -0.07 100
IV.FDMO.HHZ. 2024-04-18T12:00:29.88 0.1 undecidable manual P 298 8.88 137 -0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:0.6 0.00004723105 0.16 AML other m 2024-04-18T12:00:32.85
IV.MML1.EHN. ML:0.2 0.0000115942715 0.18 AML other m 2024-04-18T12:00:35.42
IV.NRCA.HHE. ML:0.4 0.000022338405 0.1 AML other m 2024-04-18T12:00:34.76
IV.NRCA.HHN. ML:0.4 0.000020617369999999998 0.2 AML other m 2024-04-18T12:00:34.35
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