Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 28-01-2023 and time 22:44:26 (UTC) in region 3 km SW Serra Sant'Abbondio (PU)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Serra Sant'Abbondio (PU), on

  • 28-01-2023 22:44:26 (UTC)
  • 28-01-2023 23:44:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4680, 12.7600 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 3 1027 1027
Frontone PU 6 1300 2327
Sassoferrato AN 9 7285 9612
Scheggia e Pascelupo PG 10 1393 11005
Cantiano PU 11 2245 13250
Pergola PU 12 6333 19583
Cagli PU 13 8731 28314
Costacciaro PG 13 1216 29530
Genga AN 15 1797 31327
Arcevia AN 15 4612 35939
Sigillo PG 15 2404 38343
Acqualagna PU 18 4393 42736
Fabriano AN 19 31480 74216
Gubbio PG 19 32216 106432
Fossato di Vico PG 19 2840 109272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Fano (60888 inhabitants)
50 Km NE of Perugia (166134 inhabitants)
51 Km S of Pesaro (94582 inhabitants)
57 Km N of Foligno (57155 inhabitants)
64 Km W of Ancona (100861 inhabitants)
68 Km S of Rimini (147750 inhabitants)
71 Km E of Arezzo (99543 inhabitants)
85 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 0.9 2023-01-28
22:44:26		 43.4685 12.7597 14 2023-01-28
22:51:54		 Sala Sismica INGV-Roma 113868991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-28 22:44:26 ± 0.09
Latitude 43.4685 ± 0.0027
Longitude 12.7597 ± 0.0050
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 113868991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 398
Semi-minor axis of confidence ellipse (meter) 192
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 55
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.29588
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 113868991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-28 22:51:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.HNE. 2023-01-28T22:44:38.61 0.3 undecidable manual S 197 32.8449 99 0.38 67
IV.SNTG.HHZ. 2023-01-28T22:44:37.26 0.3 undecidable manual S 148 27.8499 101 0.36 68
IV.PIEI.HHZ. 2023-01-28T22:44:34.71 0.3 undecidable manual S 292 19.5693 111 -0.06 73
IV.FOSV.EHZ. 2023-01-28T22:44:34.49 0.3 undecidable manual S 180 19.2696 111 -0.21 70
IV.MPAG.EHZ. 2023-01-28T22:44:34.50 0.1 undecidable manual S 360 17.871 114 0.16 96
IV.ATCC.HNE. 2023-01-28T22:44:33.36 0.3 undecidable manual P 197 32.8449 99 -0.09 70
IV.ARVD.HHZ. 2023-01-28T22:44:33.58 0.3 undecidable manual S 77 14.9739 121 -0.1 72
IV.FRON.EHZ. 2023-01-28T22:44:32.10 0.3 undecidable manual S 334 6.0939 151 0.1 73
IV.ATSC.EHN. 2023-01-28T22:44:32.15 0.3 undecidable manual S 230 7.6812 145 -0.08 75
IV.SNTG.HHZ. 2023-01-28T22:44:32.48 0.3 undecidable manual P 148 27.8499 101 -0.21 69
IV.FOSV.EHZ. 2023-01-28T22:44:31.20 0.1 positive manual P 180 19.2696 111 -0.21 93
IV.MPAG.EHZ. 2023-01-28T22:44:31.17 0.6 undecidable manual P 360 17.871 114 -0.04 48
IV.PIEI.HHZ. 2023-01-28T22:44:31.38 0.6 positive manual P 292 19.5693 111 -0.07 48
IV.SSFR.HHZ. 2023-01-28T22:44:31.77 0.3 undecidable manual S 153 3.996 161 0 75
IV.FRON.EHZ. 2023-01-28T22:44:30.03 1.0 negative manual P 334 6.0939 151 0.17 24
IV.ARVD.HHZ. 2023-01-28T22:44:30.78 0.6 undecidable manual P 77 14.9739 121 -0.04 49
IV.ATSC.EHN. 2023-01-28T22:44:29.98 0.1 undecidable manual P 230 7.6812 145 -0.01 100
IV.SSFR.HHZ. 2023-01-28T22:44:29.76 0.1 undecidable manual P 153 3.996 161 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:1.1 0.00014150000000000002 1.62 AML other m 2023-01-28T22:44:32.86
IV.SSFR.HHE. ML:0.9 0.00009955 0.8 AML other m 2023-01-28T22:44:32.37
IV.SSFR.HNE. ML:1.0 0.00010800514 0.704 AML other m 2023-01-28T22:44:32.77
IV.SSFR.HNN. ML:1.2 0.00018485025 0.1664 AML other m 2023-01-28T22:44:31.87
IV.PIEI.HHE. ML:0.6 0.00002467831 0.0896 AML other m 2023-01-28T22:44:34.98
IV.PIEI.HHN. ML:0.5 0.000018027500000000003 0.1536 AML other m 2023-01-28T22:44:34.79
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