Earthquake with magnitude of ML 0.5 on date 20-07-2023 and time 22:36:31 (UTC) in region 3 km S Serra Sant'Abbondio (PU)

A magnitude ML 0.5 earthquake occured in region: 3 km S Serra Sant'Abbondio (PU), on

  • 20-07-2023 22:36:31 (UTC)
  • 21-07-2023 00:36:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4650, 12.7770 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.

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 3 1027 1027
Frontone PU 6 1300 2327
Sassoferrato AN 7 7285 9612
Scheggia e Pascelupo PG 11 1393 11005
Pergola PU 12 6333 17338
Cantiano PU 12 2245 19583
Costacciaro PG 13 1216 20799
Genga AN 13 1797 22596
Cagli PU 14 8731 31327
Arcevia AN 14 4612 35939
Sigillo PG 15 2404 38343
Fabriano AN 18 31480 69823
Fossato di Vico PG 19 2840 72663
Acqualagna PU 19 4393 77056
Serra San Quirico AN 19 2850 79906

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Fano (60888 inhabitants)
51 Km NE of Perugia (166134 inhabitants)
51 Km S of Pesaro (94582 inhabitants)
57 Km N of Foligno (57155 inhabitants)
62 Km W of Ancona (100861 inhabitants)
69 Km S of Rimini (147750 inhabitants)
72 Km E of Arezzo (99543 inhabitants)
86 Km SE of Cesena (96758 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 0.5 2023-07-20
22:36:31
43.4647 12.7773 14 2023-07-20
22:41:55
Sala Sismica INGV-Roma 119430521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-20 22:36:31 ± 0.06
Latitude 43.4647 ± 0.0018
Longitude 12.7773 ± 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 119430521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 220
Semi-minor axis of confidence ellipse (meter) 217
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 177
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.20415
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 119430521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-20 22:41:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-07-20T22:36:40.03 0.1 undecidable manual S 292 21.0678 106 0.05 97
IV.FOSV.EHZ. 2023-07-20T22:36:39.42 0.1 undecidable manual S 184 18.87 109 -0.02 98
IV.MPAG.EHZ. 2023-07-20T22:36:39.21 0.1 undecidable manual S 356 18.2706 110 -0.08 97
IV.MPAG.EHZ. 2023-07-20T22:36:36.17 0.1 undecidable manual P 356 18.2706 110 0.04 98
IV.SSFR.HHZ. 2023-07-20T22:36:36.41 0.1 undecidable manual S 173 3.1968 164 -0.05 100
IV.FOSV.EHZ. 2023-07-20T22:36:36.19 0.1 undecidable manual P 184 18.87 109 -0.03 98
IV.FRON.EHZ. 2023-07-20T22:36:36.90 0.1 undecidable manual S 325 7.1928 145 -0.02 100
IV.PIEI.HHZ. 2023-07-20T22:36:36.46 0.1 undecidable manual P 292 21.0678 106 -0.07 97
IV.NARO.HHZ. 2023-07-20T22:36:36.73 0.1 undecidable manual P 316 22.6551 104 -0.04 97
IV.SSFR.HHZ. 2023-07-20T22:36:34.58 0.1 undecidable manual P 173 3.1968 164 0.09 99
IV.FRON.EHZ. 2023-07-20T22:36:34.88 0.1 undecidable manual P 325 7.1928 145 0.12 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:0.8 0.0000886 0.16 AML other m 2023-07-20T22:36:36.65
IV.SSFR.HHE. ML:0.8 0.00007965 0.88 AML other m 2023-07-20T22:36:37.58
IV.FRON.EHE. ML:0.1 0.000014249999999999999 0.14 AML other m 2023-07-20T22:36:37.14
IV.FRON.EHN. ML:0.3 0.000022850000000000003 0.28 AML other m 2023-07-20T22:36:37.44
IV.PIEI.HHN. ML:0.4 0.000013375 0.18 AML other m 2023-07-20T22:36:40.19
IV.PIEI.HHE. ML:0.5 0.000017899999999999998 0.66 AML other m 2023-07-20T22:36:40.22
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