Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 18-02-2024 and time 21:37:38 (Italy) in region 6 km S Apecchio (PU)

A magnitude ML 0.4 earthquake occured in region: 6 km S Apecchio (PU), on

  • 18-02-2024 20:37:38 (UTC)
  • 18-02-2024 21:37:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5030, 12.4240 at 9 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
Apecchio PU 6 1882 1882
Pietralunga PG 7 2111 3993
Piobbico PU 12 2029 6022
Città di Castello PG 16 39913 45935
Cantiano PU 17 2245 48180
Montone PG 17 1680 49860
Mercatello sul Metauro PU 18 1378 51238
Sant'Angelo in Vado PU 18 4133 55371
Cagli PU 19 8731 64102

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Arezzo (99543 inhabitants)
44 Km N of Perugia (166134 inhabitants)
60 Km SW of Pesaro (94582 inhabitants)
61 Km SW of Fano (60888 inhabitants)
63 Km S of Rimini (147750 inhabitants)
65 Km NW of Foligno (57155 inhabitants)
72 Km S of Cesena (96758 inhabitants)
86 Km SE of Forlì (117913 inhabitants)
89 Km W of Ancona (100861 inhabitants)
91 Km E of Siena (53903 inhabitants)
97 Km SE of Faenza (58541 inhabitants)
99 Km E of Firenze (382808 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 2024-02-18
20:37:38		 43.5033 12.4238 9 2024-02-18
20:46:27		 Sala Sismica INGV-Roma 125363231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-18 20:37:38 ± 0.07
Latitude 43.5033 ± 0.0018
Longitude 12.4238 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125363231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 238
Semi-minor axis of confidence ellipse (meter) 85
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 336
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.03327
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
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 125363231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-18 20:46:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HNZ. 2024-02-18T20:37:52.42 0.3 undecidable manual S 243 41.625 50 -0.24 68
IV.PARC.HHZ. 2024-02-18T20:37:47.00 0.3 undecidable manual S 317 21.9669 111 0.29 69
IV.ATSC.EHE. 2024-02-18T20:37:46.80 0.3 undecidable manual S 112 22.8549 110 -0.23 70
IV.CAFI.HNZ. 2024-02-18T20:37:46.21 0.3 undecidable manual P 243 41.625 50 -0.48 64
IV.NARO.HHZ. 2024-02-18T20:37:45.19 0.3 undecidable manual S 47 17.3715 116 -0.07 73
IV.ATMC.EHZ. 2024-02-18T20:37:45.99 0.3 undecidable manual S 251 19.6692 114 0.02 74
IV.TB01.DHZ.01 2024-02-18T20:37:44.22 0.3 undecidable manual S 176 13.5753 122 0.12 73
IV.BADI.EHZ. 2024-02-18T20:37:44.60 0.3 undecidable manual S 273 14.4744 121 0.23 71
IV.TB02.DHN.01 2024-02-18T20:37:44.58 0.3 undecidable manual S 185 14.7741 120 0.11 73
IV.TSM3.DHE.01 2024-02-18T20:37:44.55 0.3 undecidable manual S 202 14.4744 121 0.18 72
IV.ATVO.HHZ. 2024-02-18T20:37:44.29 0.3 undecidable manual S 186 13.4754 122 0.2 72
IV.PARC.HHZ. 2024-02-18T20:37:43.28 0.3 undecidable manual P 317 21.9669 111 0.02 73
IV.ATSC.EHE. 2024-02-18T20:37:43.48 0.1 undecidable manual P 112 22.8549 110 0.04 97
IV.ATBU.HNN. 2024-02-18T20:37:43.50 0.3 undecidable manual S 107 10.4784 129 0.27 71
IV.TB03.DHZ.01 2024-02-18T20:37:43.04 0.6 undecidable manual S 185 11.3775 127 -0.44 46
IV.PIEI.HHZ. 2024-02-18T20:37:43.27 0.3 undecidable manual S 68 9.6792 132 0.26 71
IV.TSM2.DH1.15 2024-02-18T20:37:43.86 0.3 undecidable manual S 156 12.9759 123 -0.08 73
IV.BADI.EHZ. 2024-02-18T20:37:42.06 0.3 undecidable manual P 273 14.4744 121 0.16 72
IV.TB02.DHN.01 2024-02-18T20:37:42.13 0.1 undecidable manual P 185 14.7741 120 0.17 96
IV.TSM3.DHE.01 2024-02-18T20:37:42.04 0.3 undecidable manual P 202 14.4744 121 0.14 72
IV.NARO.HHZ. 2024-02-18T20:37:42.34 0.1 undecidable manual P 47 17.3715 116 -0.07 97
IV.TSM6.DHE.01 2024-02-18T20:37:42.48 0.3 undecidable manual S 245 8.0808 137 -0.15 73
IV.ATMC.EHZ. 2024-02-18T20:37:42.80 0.3 undecidable manual P 251 19.6692 114 -0.03 73
IV.ATPI.EHZ. 2024-02-18T20:37:41.97 0.1 undecidable manual S 197 6.0939 145 -0.22 96
IV.TSM2.DH1.15 2024-02-18T20:37:41.68 0.1 undecidable manual P 156 12.9759 123 0.02 99
IV.ATVO.HHZ. 2024-02-18T20:37:41.85 0.1 undecidable manual P 186 13.4754 122 0.11 97
IV.APEC.HHZ. 2024-02-18T20:37:41.95 0.1 undecidable manual S 357 6.0939 144 -0.24 96
IV.ATPC.HNN. 2024-02-18T20:37:41.33 0.1 undecidable manual S 133 3.6963 157 -0.44 92
IV.TB01.DHZ.01 2024-02-18T20:37:41.81 0.3 undecidable manual P 176 13.5753 122 0.06 74
IV.ATBU.HNN. 2024-02-18T20:37:41.47 0.1 undecidable manual P 107 10.4784 129 0.22 96
IV.TB03.DHZ.01 2024-02-18T20:37:41.47 0.3 undecidable manual P 185 11.3775 127 0.08 74
IV.PIEI.HHZ. 2024-02-18T20:37:41.23 0.1 undecidable manual P 68 9.6792 132 0.1 98
IV.TSM6.DHE.01 2024-02-18T20:37:40.92 0.1 undecidable manual P 245 8.0808 137 0.02 100
IV.ATPI.EHZ. 2024-02-18T20:37:40.55 0.3 undecidable manual P 197 6.0939 145 -0.1 74
IV.APEC.HHZ. 2024-02-18T20:37:40.58 0.3 undecidable manual P 357 6.0939 144 -0.07 75
IV.ATPC.HNN. 2024-02-18T20:37:40.24 0.1 undecidable manual P 133 3.6963 157 -0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHE. ML:0.6 0.00007705 0.14 AML other m 2024-02-18T20:37:42.16
IV.APEC.HHN. ML:0.6 0.0000748 0.1 AML other m 2024-02-18T20:37:42.23
IV.ATPI.EHN. ML:0.3 0.0000347 0.6 AML other m 2024-02-18T20:37:42.55
IV.ATPI.EHE. ML:0.1 0.0000266 0.56 AML other m 2024-02-18T20:37:43.51
IV.PIEI.HHN. ML:0.3 0.00003075 0.2 AML other m 2024-02-18T20:37:43.54
IV.PIEI.HHE. ML:0.3 0.0000316 1.7 AML other m 2024-02-18T20:37:43.02
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