Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-04-2021 and time 04:27:11 (Italy) in region 4 km NE Serravalle di Chienti (MC)

A magnitude ML 1.5 earthquake occured in region: 4 km NE Serravalle di Chienti (MC), on

  • 23-04-2021 02:27:11 (UTC)
  • 23-04-2021 04:27:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0960, 12.9890 at 9 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 4 1070 1070
Muccia MC 5 915 1985
Sefro MC 7 422 2407
Pieve Torina MC 8 1458 3865
Camerino MC 8 6974 10839
Pievebovigliana MC 9 866 11705
Pioraco MC 9 1134 12839
Fiordimonte MC 11 202 13041
Monte Cavallo MC 11 145 13186
Fiuminata MC 11 1402 14588
Castelraimondo MC 14 4587 19175
Fiastra MC 15 559 19734
Nocera Umbra PG 16 5839 25573
Acquacanina MC 17 121 25694
Gagliole MC 17 620 26314
Esanatoglia MC 18 2034 28348
Matelica MC 18 9981 38329
Serrapetrona MC 19 966 39295
Valtopina PG 19 1398 40693
Visso MC 20 1107 41800

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
66 Km NE of Terni (111501 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
76 Km NW of Teramo (54892 inhabitants)
83 Km S of Fano (60888 inhabitants)
89 Km NW of L'Aquila (69753 inhabitants)
91 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
Bulletin
Rev1000 		ML 1.5 2021-04-23
02:27:11		 43.0957 12.9888 9 2021-07-12
16:55:14		 Bollettino Sismico Italiano INGV 90900491
Reviewed
Rev100 		ML 1.5 2021-04-23
02:27:11		 43.0952 12.994 10 2021-04-23
02:31:49		 Sala Sismica INGV-Roma 89381341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-23 02:27:11 ± 0.03
Latitude 43.0957 ± 0.0018
Longitude 12.9888 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90900491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 200
Semi-minor axis of confidence ellipse (meter) 105
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 31
Number of associated phases, regardless of their use for origin computation 63
Number of defining phases 63
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.02158
Epicentral distance of station farthest from the epicenter (degree) 0.59445
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 90900491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-07 15:21:45

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 89381341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-23 02:31:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-04-23T02:27:32.19 0.6 undecidable manual S 330 65.9895 50 0.27 43
IV.MPAG.EHZ. 2021-04-23T02:27:31.56 0.3 undecidable manual S 343 61.9935 50 0.69 57
IV.PIEI.HHZ. 2021-04-23T02:27:30.78 0.6 undecidable manual S 323 60.9945 50 0.17 44
IV.T1299.HNN. 2021-04-23T02:27:29.57 0.6 undecidable manual S 155 56.499 50 0.17 44
IV.FRON.EHZ. 2021-04-23T02:27:28.14 0.3 undecidable manual S 336 51.4152 50 0.1 68
IV.LNSS.HHZ. 2021-04-23T02:27:28.76 0.6 undecidable manual S 176 54.8007 50 -0.2 44
IV.MOMA.HHZ. 2021-04-23T02:27:27.19 0.6 undecidable manual S 227 46.9197 50 0.34 44
IV.ARVD.HHZ. 2021-04-23T02:27:26.30 0.3 undecidable manual S 355 44.8218 50 0.02 70
IV.GAVE.EHZ. 2021-04-23T02:27:26.29 0.6 undecidable manual S 190 45.4212 50 -0.15 46
IV.MURB.HHZ. 2021-04-23T02:27:25.93 0.1 undecidable manual S 296 41.9247 50 0.43 87
IV.SSFR.HHN. 2021-04-23T02:27:25.31 0.3 undecidable manual S 336 41.3253 50 -0.03 71
IV.MF5.EHZ. 2021-04-23T02:27:25.65 0.6 undecidable manual S 107 40.0266 50 0.65 40
IV.NARO.HHZ. 2021-04-23T02:27:23.18 0.3 undecidable manual P 330 65.9895 50 -0.04 67
IV.MMO1.EHZ. 2021-04-23T02:27:23.39 0.6 undecidable manual S 128 35.0427 50 -0.28 45
IV.CING.HNZ. 2021-04-23T02:27:23.39 0.3 undecidable manual S 28 35.2425 50 -0.34 67
IV.MPAG.EHZ. 2021-04-23T02:27:23.01 0.1 undecidable manual P 343 61.9935 50 0.4 84
IV.PIEI.HHZ. 2021-04-23T02:27:22.34 0.1 undecidable manual P 323 60.9945 50 -0.12 89
IV.NRCA.HHZ. 2021-04-23T02:27:22.08 0.1 undecidable manual S 161 30.8469 106 -0.34 90
IV.ATCC.EHZ. 2021-04-23T02:27:22.24 0.1 undecidable manual S 289 29.9478 106 0.11 95
IV.EL6.EHZ. 2021-04-23T02:27:21.03 0.1 undecidable manual S 19 27.4503 107 -0.28 92
IV.T1299.HNN. 2021-04-23T02:27:21.75 0.3 undecidable manual P 155 56.499 50 -0.01 69
IV.ASSB.HHN. 2021-04-23T02:27:21.08 0.3 undecidable manual S 258 27.3504 107 -0.21 70
IV.GUMA.HHZ. 2021-04-23T02:27:21.96 0.3 undecidable manual S 97 28.2495 107 0.37 67
IV.MC2.EHZ. 2021-04-23T02:27:21.17 0.3 undecidable manual S 141 26.1516 108 0.31 69
IT.FOPC.HGN. 2021-04-23T02:27:21.30 0.3 undecidable manual S 239 27.0507 108 0.12 71
IV.ATBU.EHZ. 2021-04-23T02:27:21.70 0.3 undecidable manual P 320 55.2003 50 0.15 67
IV.FOSV.EHZ. 2021-04-23T02:27:21.69 0.1 undecidable manual S 320 28.749 107 -0.05 96
IV.LNSS.HHZ. 2021-04-23T02:27:21.08 0.3 undecidable manual P 176 54.8007 50 -0.42 63
IV.MOMA.HHZ. 2021-04-23T02:27:20.19 0.1 undecidable manual P 227 46.9197 50 -0.1 92
IV.FRON.EHZ. 2021-04-23T02:27:20.70 0.1 undecidable manual P 336 51.4152 50 -0.27 88
IV.GAVE.EHZ. 2021-04-23T02:27:19.78 0.1 undecidable manual P 190 45.4212 50 -0.27 89
IV.SSFR.HHN. 2021-04-23T02:27:19.37 0.6 undecidable manual P 336 41.3253 50 -0.05 47
IV.MF5.EHZ. 2021-04-23T02:27:19.31 0.1 undecidable manual P 107 40.0266 50 0.09 93
IV.MURB.HHZ. 2021-04-23T02:27:19.61 0.6 negative manual P 296 41.9247 50 0.1 46
IV.ARVD.HHZ. 2021-04-23T02:27:19.68 0.1 undecidable manual P 355 44.8218 50 -0.28 89
IV.MMO1.EHZ. 2021-04-23T02:27:18.29 0.3 undecidable manual P 128 35.0427 50 -0.16 70
IV.CING.HNZ. 2021-04-23T02:27:18.10 0.1 positive manual P 28 35.2425 50 -0.38 88
IV.CSP1.EHZ. 2021-04-23T02:27:18.16 0.1 undecidable manual S 91 17.4714 116 0.07 97
IV.FOSV.EHZ. 2021-04-23T02:27:17.35 0.6 undecidable manual P 320 28.749 107 0.01 48
IV.FEMA.HNE. 2021-04-23T02:27:17.68 0.3 undecidable manual S 162 15.6732 119 0.17 72
IV.PF6.EHN. 2021-04-23T02:27:17.92 0.6 undecidable manual S 74 17.2716 117 -0.1 48
IV.ATCC.EHZ. 2021-04-23T02:27:17.37 0.1 undecidable manual P 289 29.9478 106 -0.19 93
IV.NRCA.HHZ. 2021-04-23T02:27:17.38 0.3 negative manual P 161 30.8469 106 -0.35 67
IV.MDAR.HNZ. 2021-04-23T02:27:17.95 0.1 undecidable manual S 49 16.4724 118 0.18 95
IV.GUMA.HHZ. 2021-04-23T02:27:17.29 0.1 positive manual P 97 28.2495 107 0.04 96
IV.CESI.HHZ. 2021-04-23T02:27:16.72 0.1 undecidable manual S 214 12.1767 125 0.22 95
IV.EL6.EHZ. 2021-04-23T02:27:16.87 0.1 positive manual P 19 27.4503 107 -0.22 93
IV.ASSB.HHN. 2021-04-23T02:27:16.85 0.1 positive manual P 258 27.3504 107 -0.22 93
IV.MC2.EHZ. 2021-04-23T02:27:16.98 0.6 undecidable manual P 141 26.1516 108 0.15 47
IT.FOPC.HGN. 2021-04-23T02:27:16.89 0.1 positive manual P 239 27.0507 108 -0.12 95
IT.MTCL.HGZ. 2021-04-23T02:27:16.26 0.3 undecidable manual S 176 11.3775 127 0 75
IV.MDAR.HNZ. 2021-04-23T02:27:15.09 0.1 undecidable manual P 49 16.4724 118 0.05 98
IV.FDMO.HHZ. 2021-04-23T02:27:15.99 0.1 undecidable manual S 129 10.3785 130 0 100
IV.CSP1.EHZ. 2021-04-23T02:27:15.29 0.1 positive manual P 91 17.4714 116 0.06 98
IV.FEMA.HNE. 2021-04-23T02:27:15.01 0.1 undecidable manual P 162 15.6732 119 0.11 97
IV.PF6.EHN. 2021-04-23T02:27:15.16 0.1 undecidable manual P 74 17.2716 117 -0.03 98
IV.SEF1.HNN. 2021-04-23T02:27:14.80 0.6 undecidable manual S 329 6.5934 143 -0.28 47
IT.MTCL.HGZ. 2021-04-23T02:27:14.25 0.1 undecidable manual P 176 11.3775 127 0.08 98
IV.MML1.HNE. 2021-04-23T02:27:14.36 0.3 undecidable manual S 325 2.3976 164 -0.07 75
IV.FDMO.HHZ. 2021-04-23T02:27:14.02 1.0 undecidable manual P 129 10.3785 130 0 25
IV.CESI.HHZ. 2021-04-23T02:27:14.53 0.1 positive manual P 214 12.1767 125 0.22 95
IV.SEF1.HNN. 2021-04-23T02:27:13.62 0.3 undecidable manual P 329 6.5934 143 0.13 74
IV.MML1.HNE. 2021-04-23T02:27:13.26 0.1 negative manual P 325 2.3976 164 0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.7 0.000701 0.14 AML other m 2021-04-23T02:27:16.14
IV.FDMO.HHE. ML:1.5 0.00042208204999999996 0.1008 AML other m 2021-04-23T02:27:16.17
IV.CESI.HHE. ML:1.6 0.00048556635 0.16 AML other m 2021-04-23T02:27:16.81
IV.CESI.HNE. ML:1.6 0.0004247305 0.1696 AML other m 2021-04-23T02:27:16.81
IV.CESI.HHN. ML:1.3 0.000223522725 0.0992 AML other m 2021-04-23T02:27:16.83
IV.CESI.HNN. ML:1.3 0.0002282194 0.1008 AML other m 2021-04-23T02:27:16.83
IV.CSP1.EHN. ML:2.0 0.0008049999999999999 0.32 AML other m 2021-04-23T02:27:18.40
IV.CSP1.EHE. ML:1.8 0.0005975 0.1 AML other m 2021-04-23T02:27:18.57
IV.MDAR.HNN. ML:1.1 0.00011746068000000001 0.1408 AML other m 2021-04-23T02:27:18.56
IV.MDAR.HNE. ML:1.2 0.00012794915 0.2 AML other m 2021-04-23T02:27:18.62
IV.EL6.EHE. ML:1.5 0.00018749525 0.12 AML other m 2021-04-23T02:27:21.30
IV.EL6.EHN. ML:1.6 0.000234 0.24 AML other m 2021-04-23T02:27:21.81
IV.FOSV.EHE. ML:0.8 0.00003655 0.34 AML other m 2021-04-23T02:27:22.23
IV.ATCC.EHN. ML:1.5 0.0001565 0.44 AML other m 2021-04-23T02:27:22.50
IV.FOSV.EHN. ML:1.2 0.00007594999999999999 1.08 AML other m 2021-04-23T02:27:22.29
IV.NRCA.HHN. ML:1.5 0.00014800000000000002 0.54 AML other m 2021-04-23T02:27:22.03
IV.ATCC.EHE. ML:1.6 0.000199 0.16 AML other m 2021-04-23T02:27:22.49
IV.GUMA.HHE. ML:1.8 0.0003345 0.28 AML other m 2021-04-23T02:27:22.44
IV.NRCA.HHE. ML:1.3 0.00009554999999999999 0.6 AML other m 2021-04-23T02:27:23.60
IV.GUMA.HHN. ML:1.6 0.000204 1 AML other m 2021-04-23T02:27:24.28
IV.MURB.HHE. ML:1.5 0.0001105 0.84 AML other m 2021-04-23T02:27:26.90
IV.ARVD.HHE. ML:1.6 0.00010910000000000001 0.14 AML other m 2021-04-23T02:27:26.83
IV.ARVD.HHN. ML:1.3 0.0000586 1.36 AML other m 2021-04-23T02:27:26.31
IV.MURB.HHN. ML:1.5 0.0001065 0.24 AML other m 2021-04-23T02:27:27.43
IV.FRON.EHE. ML:1.4 0.00005945 1.3 AML other m 2021-04-23T02:27:28.84
IV.FRON.EHN. ML:1.4 0.00006395000000000001 0.98 AML other m 2021-04-23T02:27:29.99
IV.LNSS.HHN. ML:1.2 0.0000407 0.76 AML other m 2021-04-23T02:27:29.55
IV.LNSS.HHE. ML:1.2 0.00003845 0.22 AML other m 2021-04-23T02:27:29.45
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