Earthquake with magnitude of ML 0.4 on date 27-08-2023 and time 09:21:22 (UTC) in region 2 km E Serravalle di Chienti (MC)

A magnitude ML 0.4 earthquake occured in region: 2 km E Serravalle di Chienti (MC), on

  • 27-08-2023 09:21:22 (UTC)
  • 27-08-2023 11:21:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0730, 12.9740 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
Serravalle di Chienti MC 2 1070 1070
Muccia MC 6 915 1985
Pieve Torina MC 7 1458 3443
Sefro MC 9 422 3865
Monte Cavallo MC 9 145 4010
Pievebovigliana MC 9 866 4876
Fiordimonte MC 10 202 5078
Camerino MC 10 6974 12052
Pioraco MC 12 1134 13186
Fiuminata MC 13 1402 14588
Fiastra MC 15 559 15147
Nocera Umbra PG 15 5839 20986
Castelraimondo MC 17 4587 25573
Acquacanina MC 17 121 25694
Valtopina PG 18 1398 27092
Visso MC 18 1107 28199
Ussita MC 20 444 28643
Esanatoglia MC 20 2034 30677

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
63 Km NE of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
86 Km S of Fano (60888 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Pesaro (94582 inhabitants)
99 Km E of Arezzo (99543 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 2023-08-27
09:21:22
43.0728 12.9738 14 2023-08-27
09:27:28
Sala Sismica INGV-Roma 120509791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-27 09:21:22 ± 0.11
Latitude 43.0728 ± 0.0054
Longitude 12.9738 ± 0.0062
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 120509791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 560
Semi-minor axis of confidence ellipse (meter) 422
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 195
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25990
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 120509791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-27 09:27:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCIV.CHZ. 2023-08-27T09:21:36.41 3.0 positive manual P -0.02 0
IV.CSP1.EHZ. 2023-08-27T09:21:29.87 0.6 undecidable manual S 83 18.87 109 0 67
IV.NRCA.HHZ. 2023-08-27T09:21:28.16 0.6 positive manual P 157 28.8489 99 -0.01 65
IV.FDMO.HHZ. 2023-08-27T09:21:27.72 0.6 undecidable manual S 114 10.0788 133 -0.14 66
IV.CSP1.EHZ. 2023-08-27T09:21:26.74 1.0 positive manual P 83 18.87 109 0.08 33
IV.MML1.EHZ. 2023-08-27T09:21:26.96 0.6 undecidable manual S 358 4.4955 157 -0.05 67
IV.SNTG.HHZ. 2023-08-27T09:21:26.75 0.6 undecidable manual P 352 20.3685 106 -0.14 65
IV.MML1.EHZ. 2023-08-27T09:21:25.15 0.3 undecidable manual P 358 4.4955 157 0.14 100
IV.FDMO.HHZ. 2023-08-27T09:21:25.58 0.6 positive manual P 114 10.0788 133 0.08 67
IV.ATCC.EHZ. 2023-08-27T09:21:24.51 3.0 undecidable manual P -0.08 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHN. ML:0.5 0.000039099999999999995 0.22 AML other m 2023-08-27T09:21:27.06
IV.MML1.EHE. ML:0.4 0.00003655 0.9 AML other m 2023-08-27T09:21:27.28
IV.FDMO.HHN. ML:0.4 0.00002385 0.22 AML other m 2023-08-27T09:21:27.97
IV.FDMO.HHE. ML:0.3 0.000021499999999999997 1.78 AML other m 2023-08-27T09:21:28.04
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