Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.0 on date 18-08-2023 and time 04:06:07 (UTC) in region 6 km S Serra Sant'Abbondio (PU)

A magnitude ML 0.0 earthquake occured in region: 6 km S Serra Sant'Abbondio (PU), on

  • 18-08-2023 04:06:07 (UTC)
  • 18-08-2023 06:06:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4400, 12.7670 at 14 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
Serra Sant'Abbondio PU 6 1027 1027
Sassoferrato AN 8 7285 8312
Frontone PU 9 1300 9612
Scheggia e Pascelupo PG 9 1393 11005
Costacciaro PG 10 1216 12221
Cantiano PU 12 2245 14466
Sigillo PG 12 2404 16870
Genga AN 14 1797 18667
Pergola PU 15 6333 25000
Cagli PU 15 8731 33731
Arcevia AN 16 4612 38343
Fabriano AN 16 31480 69823
Fossato di Vico PG 16 2840 72663
Gubbio PG 18 32216 104879

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Perugia (166134 inhabitants)
49 Km SW of Fano (60888 inhabitants)
54 Km S of Pesaro (94582 inhabitants)
54 Km N of Foligno (57155 inhabitants)
64 Km W of Ancona (100861 inhabitants)
71 Km S of Rimini (147750 inhabitants)
71 Km E of Arezzo (99543 inhabitants)
88 Km SE of Cesena (96758 inhabitants)
98 Km N of Terni (111501 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 0.0 2023-08-18
04:06:07		 43.4403 12.767 14 2023-08-18
04:10:10		 Sala Sismica INGV-Roma 120241121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-18 04:06:07 ± 0.03
Latitude 43.4403 ± 0.0009
Longitude 12.7670 ± 0.0037
Depth (km) 14 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120241121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 256
Semi-minor axis of confidence ellipse (meter) 59
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.04
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.21764
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.0

Field Value
Value 0.0
Uncertainty 0.1
Num. used stations 7
Type of magnitude ML
Reference to an origin 120241121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-18 04:10:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CIMA.HNZ. 2023-08-18T04:06:31.45 3.0 undecidable manual S -0.01 0
IV.NARO.HHZ. 2023-08-18T04:06:16.59 0.6 undecidable manual S 322 24.1536 104 0.09 48
IV.MPAG.EHZ. 2023-08-18T04:06:15.68 0.6 undecidable manual S 358 20.9679 108 0 49
IV.PIEI.HHZ. 2023-08-18T04:06:15.76 0.6 undecidable manual S 300 21.4674 107 -0.05 49
IV.FOSV.EHZ. 2023-08-18T04:06:14.49 0.6 undecidable manual S 182 16.1727 117 0 50
IV.FRON.EHZ. 2023-08-18T04:06:13.00 0.6 undecidable manual S 339 9.1797 138 -0.01 50
IV.MPAG.EHZ. 2023-08-18T04:06:12.20 0.1 undecidable manual P 358 20.9679 108 -0.02 98
IV.PIEI.HHZ. 2023-08-18T04:06:12.24 0.1 undecidable manual P 300 21.4674 107 -0.06 98
IV.NARO.HHZ. 2023-08-18T04:06:12.69 0.6 undecidable manual P 322 24.1536 104 0 49
IV.FOSV.EHZ. 2023-08-18T04:06:11.56 0.1 undecidable manual P 182 16.1727 117 0.02 99
IV.FRON.EHZ. 2023-08-18T04:06:10.73 0.1 undecidable manual P 339 9.1797 138 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:0.0 0.000011927695 0.1984 AML other m 2023-08-18T04:06:13.14
IV.FRON.EHN. ML:0.2 0.00001502933 0.08 AML other m 2023-08-18T04:06:13.77
IV.FOSV.EHE. ML:-0.2 0.0000067651195 0.0768 AML other m 2023-08-18T04:06:14.67
IV.FOSV.EHN. ML:0.1 0.0000076917925 0.08 AML other m 2023-08-18T04:06:14.73
IV.MPAG.EHE. ML:0.2 0.0000104525795 0.16 AML other m 2023-08-18T04:06:15.80
IV.NARO.HHE. ML:0.0 0.000006502112500000001 0.08 AML other m 2023-08-18T04:06:16.80
IV.NARO.HHN. ML:0.0 0.0000046410970999999996 0.0608 AML other m 2023-08-18T04:06:16.74
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