Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 29-09-2021 and time 06:25:00 (Italy) in region 4 km E Serravalle di Chienti (MC)

A magnitude ML 0.9 earthquake occured in region: 4 km E Serravalle di Chienti (MC), on

  • 29-09-2021 04:25:00 (UTC)
  • 29-09-2021 06:25:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0810, 12.9970 at 11 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
Serravalle di Chienti MC 4 1070 1070
Muccia MC 4 915 1985
Pieve Torina MC 6 1458 3443
Pievebovigliana MC 7 866 4309
Sefro MC 8 422 4731
Camerino MC 9 6974 11705
Fiordimonte MC 9 202 11907
Monte Cavallo MC 10 145 12052
Pioraco MC 11 1134 13186
Fiuminata MC 13 1402 14588
Fiastra MC 14 559 15147
Castelraimondo MC 15 4587 19734
Acquacanina MC 16 121 19855
Nocera Umbra PG 17 5839 25694
Visso MC 18 1107 26801
Gagliole MC 19 620 27421
Serrapetrona MC 19 966 28387
Ussita MC 19 444 28831
Esanatoglia MC 20 2034 30865
Matelica MC 20 9981 40846
Valtopina PG 20 1398 42244
Caldarola MC 20 1823 44067

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
64 Km NE of Terni (111501 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
85 Km S of Fano (60888 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Pesaro (94582 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 2021-09-29
04:25:00		 43.0807 12.9973 11 2021-09-29
04:57:28		 Sala Sismica INGV-Roma 96014971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-29 04:25:00 ± 0.03
Latitude 43.0807 ± 0.0036
Longitude 12.9973 ± 0.0025
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96014971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 4
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 8
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.15199
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.9
Num. used stations 15
Type of magnitude ML
Reference to an origin 96014971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-29 04:57:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRJA.HHZ. 2021-09-29T04:26:45.22 3.0 undecidable manual Sn -7.54 0
IV.ZEN8.EHZ. 2021-09-29T04:26:42.07 3.0 undecidable manual Sg 17.280001 0
GU.RNCA.HHZ. 2021-09-29T04:26:39.11 3.0 undecidable manual Sg 16.309999 0
IV.MESG.HHZ. 2021-09-29T04:26:37.51 3.0 undecidable manual Sn -5.99 0
MN.TRI.HHZ. 2021-09-29T04:26:31.04 3.0 undecidable manual Sg 10.13 0
IV.GALF.HHZ. 2021-09-29T04:26:06.72 3.0 negative manual Pn 3.89 0
IV.CDRU.HNZ. 2021-09-29T04:26:06.59 3.0 undecidable manual Sg 0.2 0
IV.ESCV.HHZ. 2021-09-29T04:26:01.91 3.0 negative manual Pn -1.24 0
IV.EFIU.HHZ. 2021-09-29T04:25:56.04 3.0 undecidable manual Pn -8.01 0
IV.IST3.HHZ. 2021-09-29T04:25:54.09 3.0 positive manual Pn 2.6 0
IV.AGLI.HHZ. 2021-09-29T04:25:45.54 3.0 undecidable manual Pg 9.61 0
IV.FIR.HHZ. 2021-09-29T04:25:40.95 3.0 undecidable manual Sn -0.18 0
GU.GENL.EHZ. 2021-09-29T04:25:38.37 3.0 undecidable manual Pn -2.99 0
IV.VULT.HHZ. 2021-09-29T04:25:34.11 3.0 positive manual Pg 3.04 0
GU.GRAM.HHZ. 2021-09-29T04:25:32.65 3.0 positive manual Pn -1.15 0
IV.CSP1.EHZ. 2021-09-29T04:25:07.10 0.1 undecidable manual S 86 16.872 90 0.11 96
IV.CESI.HHZ. 2021-09-29T04:25:05.59 0.1 undecidable manual S 222 11.2776 112 0.07 98
IV.FDMO.HHZ. 2021-09-29T04:25:04.91 0.1 undecidable manual S 124 8.7801 126 -0.04 99
IV.MML1.EHZ. 2021-09-29T04:25:04.15 0.1 undecidable manual S 330 4.1958 153 0 100
IV.CESI.HHZ. 2021-09-29T04:25:03.18 0.1 undecidable manual P 222 11.2776 112 -0.03 98
IV.CSP1.EHZ. 2021-09-29T04:25:03.96 0.1 undecidable manual P 86 16.872 90 -0.09 96
IV.MML1.EHZ. 2021-09-29T04:25:02.42 0.1 undecidable manual P 330 4.1958 153 0.01 100
IV.VIVA.HHZ. 2021-09-29T04:25:02.90 3.0 undecidable manual P -0.92 0
IV.FDMO.HHZ. 2021-09-29T04:25:02.85 0.1 undecidable manual P 124 8.7801 126 -0.02 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHN. ML:0.1 0.000022499999999999998 0.48 AML other m 2021-09-29T04:25:04.57
IV.MML1.EHE. ML:0.2 0.000023850000000000004 0.44 AML other m 2021-09-29T04:25:04.45
IV.FDMO.HHE. ML:0.4 0.000033 0.2 AML other m 2021-09-29T04:25:05.11
IV.FDMO.HHN. ML:0.4 0.000032149999999999995 0.2 AML other m 2021-09-29T04:25:05.14
IV.CESI.HHN. ML:0.2 0.0000223 0.88 AML other m 2021-09-29T04:25:05.70
IV.CESI.HHE. ML:0.4 0.00003125 0.16 AML other m 2021-09-29T04:25:05.72
IV.MURB.HHN. ML:1.3 0.00006245 0.16 AML other m 2021-09-29T04:25:20.18
IV.ATCC.EHN. ML:0.9 0.00004185 0.22 AML other m 2021-09-29T04:25:20.16
IV.MURB.HHE. ML:1.4 0.00006809999999999999 0.96 AML other m 2021-09-29T04:25:20.60
IV.IST3.HHN. ML:5.2 0.00489 0.52 AML other m 2021-09-29T04:25:59.20
IV.IST3.HNN. ML:5.2 0.00454 0.52 AML other m 2021-09-29T04:25:59.46
IV.IST3.HNE. ML:5.1 0.003315 1.46 AML other m 2021-09-29T04:26:00.25
IV.IST3.HHE. ML:5.1 0.00359 0.34 AML other m 2021-09-29T04:26:01.25
IV.MML1.HNE. ML:0.9 0.0001368461 4.8096 AML other m 2021-09-29T04:25:06.96
IV.MML1.HNN. ML:0.8 0.000104438585 4.2272 AML other m 2021-09-29T04:25:07.90
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