Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 09-04-2021 and time 12:10:55 (Italy) in region 3 km S Serravalle di Chienti (MC)

A magnitude ML 1.5 earthquake occured in region: 3 km S Serravalle di Chienti (MC), on

  • 09-04-2021 10:10:55 (UTC)
  • 09-04-2021 12:10:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0430, 12.9510 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 3 1070 1070
Monte Cavallo MC 7 145 1215
Pieve Torina MC 8 1458 2673
Muccia MC 9 915 3588
Pievebovigliana MC 11 866 4454
Fiordimonte MC 11 202 4656
Sefro MC 12 422 5078
Camerino MC 14 6974 12052
Nocera Umbra PG 15 5839 17891
Pioraco MC 16 1134 19025
Valtopina PG 16 1398 20423
Fiuminata MC 16 1402 21825
Visso MC 17 1107 22932
Fiastra MC 17 559 23491
Sellano PG 17 1079 24570
Acquacanina MC 18 121 24691
Ussita MC 19 444 25135
Preci PG 20 724 25859

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
85 Km NW of L'Aquila (69753 inhabitants)
89 Km S of Fano (60888 inhabitants)
97 Km S of Pesaro (94582 inhabitants)
98 Km NE of Viterbo (67173 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
Bulletin
Rev1000 		ML 1.5 2021-04-09
10:10:55		 43.0428 12.9507 12 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90722351
Reviewed
Rev100 		ML 1.5 2021-04-09
10:10:55		 43.043 12.953 12 2021-04-09
10:21:59		 Sala Sismica INGV-Roma 88936991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-09 10:10:55 ± 0.03
Latitude 43.0428 ± 0.0018
Longitude 12.9507 ± 0.0025
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90722351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 214
Semi-minor axis of confidence ellipse (meter) 136
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.57826
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 90722351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-02 13:31:24

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 88936991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-09 10:21:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-04-09T10:11:06.72 0.6 undecidable manual P 329 64.1913 90 0.09 45
IV.EL6.EHN. 2021-04-09T10:11:06.88 0.3 undecidable manual S 21 34.0437 91 0.01 72
IV.ATCC.EHZ. 2021-04-09T10:11:05.77 0.3 undecidable manual S 302 29.748 91 0.05 72
IV.LNSS.HHZ. 2021-04-09T10:11:04.27 0.3 undecidable manual P 171 49.3173 91 -0.08 69
IV.MC2.EHZ. 2021-04-09T10:11:04.38 0.3 undecidable manual S 127 24.2535 92 0.13 72
IV.CSP1.EHZ. 2021-04-09T10:11:03.47 0.3 undecidable manual S 75 21.2676 93 0 74
IV.MURB.HHZ. 2021-04-09T10:11:03.36 0.3 undecidable manual P 305 42.2244 91 0.1 70
IV.ASSB.HHZ. 2021-04-09T10:11:03.91 0.3 undecidable manual S 270 23.6541 92 -0.2 71
IV.GAVE.EHZ. 2021-04-09T10:11:02.75 0.3 undecidable manual P 187 39.1275 91 -0.04 71
IV.FEMA.HNZ. 2021-04-09T10:11:01.00 0.3 undecidable manual S 138 12.0768 113 -0.04 75
IV.ATCC.EHZ. 2021-04-09T10:11:01.25 0.3 undecidable manual P 302 29.748 91 -0.08 72
IV.FOSV.HNE. 2021-04-09T10:11:01.54 0.3 undecidable manual P 331 31.8459 91 -0.12 71
IV.EL6.EHN. 2021-04-09T10:11:01.90 0.1 undecidable manual P 21 34.0437 91 -0.09 95
IV.MML1.EHZ. 2021-04-09T10:11:00.10 0.3 undecidable manual S 12 7.9809 133 -0.04 75
IV.ASSB.HHZ. 2021-04-09T10:11:00.30 0.1 undecidable manual P 270 23.6541 92 -0.1 96
IV.SNTG.HHE. 2021-04-09T10:11:00.83 0.3 undecidable manual P 358 23.5542 92 0.45 67
IV.CSP1.EHZ. 2021-04-09T10:11:00.00 0.1 undecidable manual P 75 21.2676 93 -0.03 98
IV.MC2.EHZ. 2021-04-09T10:11:00.66 0.6 undecidable manual P 127 24.2535 92 0.18 47
IV.FDMO.HHZ. 2021-04-09T10:11:00.60 0.3 undecidable manual S 94 11.0778 117 -0.21 72
IV.PF6.EHN. 2021-04-09T10:10:59.98 0.3 undecidable manual P 62 22.3554 92 -0.22 71
IV.FIU1.HNZ. 2021-04-09T10:10:59.19 0.3 undecidable manual P 355 16.2726 97 -0.06 74
IT.MTCL.HGZ. 2021-04-09T10:10:59.80 0.3 undecidable manual S 144 6.6933 139 -0.1 74
IV.CESI.HHZ. 2021-04-09T10:10:59.80 0.3 undecidable manual S 222 5.5944 145 0.08 75
IV.MML1.EHZ. 2021-04-09T10:10:58.20 0.1 undecidable manual P 12 7.9809 133 0.09 99
IV.CESI.HHZ. 2021-04-09T10:10:58.07 0.3 undecidable manual P 222 5.5944 145 0.2 73
IV.FEMA.HNZ. 2021-04-09T10:10:58.70 0.3 undecidable manual P 138 12.0768 113 0.07 74
IT.MTCL.HGZ. 2021-04-09T10:10:58.07 0.3 undecidable manual P 144 6.6933 139 0.1 74
IV.FDMO.HHZ. 2021-04-09T10:10:58.52 0.1 undecidable manual P 94 11.0778 117 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.8 0.0008325 0.16 AML other m 2021-04-09T10:10:59.99
IV.CESI.HHN. ML:1.9 0.001274 0.28 AML other m 2021-04-09T10:11:00.17
IV.FDMO.HHN. ML:1.3 0.000208 0.1 AML other m 2021-04-09T10:11:00.86
IV.FDMO.HHE. ML:1.6 0.0004435 0.16 AML other m 2021-04-09T10:11:00.85
IV.CSP1.EHE. ML:1.7 0.000316 1.54 AML other m 2021-04-09T10:11:03.01
IV.CSP1.EHN. ML:1.7 0.0003035 1.08 AML other m 2021-04-09T10:11:03.80
IV.ASSB.HHN. ML:1.5 0.0002 0.08 AML other m 2021-04-09T10:11:04.38
IV.ASSB.HHE. ML:1.4 0.00015150000000000002 0.2 AML other m 2021-04-09T10:11:04.81
IV.ATCC.EHN. ML:1.4 0.00011949999999999999 0.18 AML other m 2021-04-09T10:11:06.24
IV.ATCC.EHE. ML:1.4 0.000133 0.16 AML other m 2021-04-09T10:11:06.41
IV.MURB.HHN. ML:1.3 0.0000596 0.28 AML other m 2021-04-09T10:11:10.49
IV.MURB.HHE. ML:1.3 0.0000664 0.94 AML other m 2021-04-09T10:11:10.62
IV.PIEI.HHE. ML:1.1 0.00002295 1.56 AML other m 2021-04-09T10:11:16.00
IV.PIEI.HHN. ML:0.7 0.0000093379405 0.1344 AML other m 2021-04-09T10:11:16.18
IV.CESI.HNN. ML:1.8 0.00101688015 0.128 AML other m 2021-04-09T10:11:00.18
IV.CESI.HNE. ML:1.6 0.0006321025999999999 0.0704 AML other m 2021-04-09T10:10:59.99
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