Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 10-08-2021 and time 12:02:42 (Italy) in region 6 km S Serravalle di Chienti (MC)

A magnitude ML 0.4 earthquake occured in region: 6 km S Serravalle di Chienti (MC), on

  • 10-08-2021 10:02:42 (UTC)
  • 10-08-2021 12:02:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0240, 12.9350 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 6 1070 1070
Monte Cavallo MC 6 145 1215
Pieve Torina MC 10 1458 2673
Muccia MC 11 915 3588
Fiordimonte MC 13 202 3790
Pievebovigliana MC 13 866 4656
Sefro MC 14 422 5078
Sellano PG 15 1079 6157
Valtopina PG 15 1398 7555
Nocera Umbra PG 15 5839 13394
Visso MC 16 1107 14501
Camerino MC 17 6974 21475
Pioraco MC 18 1134 22609
Fiastra MC 18 559 23168
Preci PG 18 724 23892
Fiuminata MC 18 1402 25294
Ussita MC 19 444 25738
Acquacanina MC 20 121 25859

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
96 Km NE of Viterbo (67173 inhabitants)
98 Km SE of Arezzo (99543 inhabitants)
99 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 0.4 2021-08-10
10:02:42		 43.0243 12.9353 11 2021-08-10
10:23:58		 Sala Sismica INGV-Roma 93918461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-10 10:02:42 ± 0.12
Latitude 43.0243 ± 0.0090
Longitude 12.9353 ± 0.0098
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93918461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 985
Semi-minor axis of confidence ellipse (meter) 700
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 24
Circular confidence region, given by single value of horizontal uncertainty (meter) 980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.23113
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 93918461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-10 10:23:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESML.HHZ. 2021-08-10T10:04:23.94 3.0 positive manual Pg 13.44 0
IV.SARZ.HHZ. 2021-08-10T10:04:23.30 3.0 undecidable manual Sg 11.36 0
IV.MFNL.HHZ. 2021-08-10T10:04:12.86 3.0 negative manual Pg 7.36 0
AC.VLO.HHZ. 2021-08-10T10:04:08.93 3.0 negative manual Pn 2.1 0
IV.ZONE.HHZ. 2021-08-10T10:04:07.53 3.0 undecidable manual Sn -0.68 0
IV.RESU.HHZ. 2021-08-10T10:04:02.57 3.0 undecidable manual Pn -5.81 0
IV.SPS2.HHZ. 2021-08-10T10:03:55.34 3.0 positive manual Pn 0.26 0
IT.GLNS.HNZ. 2021-08-10T10:03:43.52 3.0 undecidable manual Sn -2.58 0
IV.LPEL.HHZ. 2021-08-10T10:03:31.74 3.0 undecidable manual Sn -3.43 0
IV.RIBO.EHZ.01 2021-08-10T10:03:28.45 3.0 undecidable manual S -0.74 0
IV.FREG.HNZ. 2021-08-10T10:03:23.37 3.0 undecidable manual Pg 0 0
IV.VBKN.HHZ. 2021-08-10T10:03:21.59 3.0 negative manual Pn -5.48 0
IV.BSSO.HHZ. 2021-08-10T10:03:20.25 3.0 negative manual Pg 1.11 0
IV.NRCA.HHE. 2021-08-10T10:02:51.59 0.6 undecidable manual S 145 25.6521 50 -0.28 46
IV.MC2.EHE. 2021-08-10T10:02:51.74 0.6 undecidable manual S 121 24.0537 50 0.28 46
IV.CSP1.EHZ. 2021-08-10T10:02:50.86 0.6 undecidable manual S 71 23.0547 50 -0.33 45
IV.ASSB.HHZ. 2021-08-10T10:02:50.91 0.6 undecidable manual S 275 22.5552 50 -0.13 47
IV.MC2.EHE. 2021-08-10T10:02:48.40 0.1 undecidable manual P 121 24.0537 50 0.72 80
IV.FDMO.HHZ. 2021-08-10T10:02:48.06 0.6 undecidable manual S 84 12.3765 131 -0.17 48
IV.NRCA.HHE. 2021-08-10T10:02:47.61 0.1 undecidable manual P 145 25.6521 50 -0.31 91
IV.CSP1.EHZ. 2021-08-10T10:02:47.36 0.6 positive manual P 71 23.0547 50 -0.16 47
IV.MML1.EHZ. 2021-08-10T10:02:47.78 0.6 undecidable manual S 17 10.2786 136 0.07 49
IV.ASSB.HHZ. 2021-08-10T10:02:47.50 0.6 undecidable manual P 275 22.5552 50 0.06 48
IT.MTCL.HGE. 2021-08-10T10:02:46.76 0.6 undecidable manual S 123 6.1938 150 -0.09 49
IV.MML1.EHZ. 2021-08-10T10:02:45.65 0.6 negative manual P 17 10.2786 136 0.13 48
IV.FDMO.HHZ. 2021-08-10T10:02:45.77 1.0 negative manual P 84 12.3765 131 -0.05 25
IT.MTCL.HGE. 2021-08-10T10:02:45.02 0.1 undecidable manual P 123 6.1938 150 0 100
IV.PE3.EHZ. 2021-08-10T10:02:44.88 3.0 undecidable manual P -3.81 0
IV.ARVD.HHZ. 2021-08-10T10:02:39.00 3.0 undecidable manual S -3.2 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHE. ML:0.3 0.0000272 0.84 AML other m 2021-08-10T10:02:48.06
IV.MML1.EHN. ML:0.3 0.0000252 0.3 AML other m 2021-08-10T10:02:48.59
IV.FDMO.HHE. ML:0.4 0.000030485765 0.1984 AML other m 2021-08-10T10:02:48.12
IV.FDMO.HHN. ML:0.3 0.000019633254999999997 0.1216 AML other m 2021-08-10T10:02:48.30
IV.ASSB.HHE. ML:0.5 0.000019225005 0.1984 AML other m 2021-08-10T10:02:51.58
IV.ASSB.HHN. ML:0.5 0.00001828443 0.224 AML other m 2021-08-10T10:02:51.26
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