Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 08-04-2021 and time 16:04:59 (Italy) in region 6 km W Serravalle di Chienti (MC)

A magnitude ML 1.3 earthquake occured in region: 6 km W Serravalle di Chienti (MC), on

  • 08-04-2021 14:04:59 (UTC)
  • 08-04-2021 16:04:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0700, 12.8730 at 8 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 7 1070 1070
Nocera Umbra PG 8 5839 6909
Valtopina PG 10 1398 8307
Sefro MC 11 422 8729
Monte Cavallo MC 13 145 8874
Muccia MC 14 915 9789
Fiuminata MC 14 1402 11191
Pieve Torina MC 15 1458 12649
Pioraco MC 15 1134 13783
Pievebovigliana MC 17 866 14649
Camerino MC 18 6974 21623
Fiordimonte MC 18 202 21825
Spello PG 18 8645 30470
Foligno PG 19 57155 87625
Gualdo Tadino PG 19 15208 102833

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NE of Foligno (57155 inhabitants)
40 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
82 Km NW of Teramo (54892 inhabitants)
87 Km S of Fano (60888 inhabitants)
91 Km NW of L'Aquila (69753 inhabitants)
92 Km E of Arezzo (99543 inhabitants)
94 Km S of Pesaro (94582 inhabitants)
96 Km NE of Viterbo (67173 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 1.3 2021-04-08
14:04:59		 43.0698 12.8732 8 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90701461
Reviewed
Rev100 		ML 1.6 2021-04-08
14:04:59		 43.0662 12.8738 8 2021-04-08
14:16:13		 Sala Sismica INGV-Roma 88916941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-08 14:04:59 ± 0.06
Latitude 43.0698 ± 0.0036
Longitude 12.8732 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90701461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 325
Semi-minor axis of confidence ellipse (meter) 287
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.06925
Epicentral distance of station farthest from the epicenter (degree) 0.43078
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 90701461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-01 17:14:23

ML:1.6

Field Value
Value 1.6
Uncertainty 0.6
Num. used stations 18
Type of magnitude ML
Reference to an origin 88916941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-08 14:16:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-04-08T14:05:15.17 0.6 undecidable manual S 7 47.8188 50 -0.17 45
IV.CING.HHZ. 2021-04-08T14:05:14.10 0.3 undecidable manual S 37 42.7239 50 0.11 70
IV.SSFR.HHN. 2021-04-08T14:05:13.58 0.3 undecidable manual S 350 41.3253 50 -0.02 71
IV.ATSC.EHE. 2021-04-08T14:05:13.43 0.3 undecidable manual S 339 42.1245 50 -0.38 66
IV.MOMA.HNZ. 2021-04-08T14:05:12.65 0.3 undecidable manual S 220 38.4282 50 -0.19 69
IV.MURB.HNE. 2021-04-08T14:05:12.38 0.3 undecidable manual S 307 35.4423 102 0.46 65
IV.EL6.EHZ. 2021-04-08T14:05:11.44 0.3 undecidable manual S 33 34.2435 103 -0.06 71
IV.MC2.EHZ. 2021-04-08T14:05:11.25 0.3 undecidable manual S 124 31.0467 104 0.8 58
IV.CSP1.EHZ. 2021-04-08T14:05:09.26 0.3 undecidable manual S 85 26.9508 106 0.19 70
IV.ARVD.HHZ. 2021-04-08T14:05:08.35 1.0 undecidable manual P 7 47.8188 50 -0.23 22
IV.SSFR.HHN. 2021-04-08T14:05:07.85 0.6 undecidable manual P 350 41.3253 50 0.27 45
IV.CING.HHZ. 2021-04-08T14:05:07.60 0.3 undecidable manual P 37 42.7239 50 -0.2 68
IV.ATSC.EHE. 2021-04-08T14:05:07.53 0.6 undecidable manual P 339 42.1245 50 -0.17 46
IV.ATCC.EHZ. 2021-04-08T14:05:07.98 0.3 undecidable manual S 304 22.755 108 0.29 69
IV.MOMA.HNZ. 2021-04-08T14:05:07.60 0.3 undecidable manual P 220 38.4282 50 0.47 65
IV.MURB.HNE. 2021-04-08T14:05:06.82 0.6 undecidable manual P 307 35.4423 102 0.22 46
IV.FDMO.HHZ. 2021-04-08T14:05:06.07 0.3 undecidable manual S 102 17.7711 113 0.02 74
IV.EL6.EHZ. 2021-04-08T14:05:06.09 0.1 undecidable manual P 33 34.2435 103 -0.28 91
IV.MC2.EHZ. 2021-04-08T14:05:06.38 0.3 undecidable manual P 124 31.0467 104 0.62 62
IV.ASSB.HHZ. 2021-04-08T14:05:05.92 0.3 undecidable manual S 260 17.6712 113 -0.09 73
IV.ATCC.EHZ. 2021-04-08T14:05:04.19 0.3 undecidable manual P 304 22.755 108 0.03 73
IV.CSP1.EHZ. 2021-04-08T14:05:04.90 0.3 undecidable manual P 85 26.9508 106 -0.06 72
IT.MTCL.HGN. 2021-04-08T14:05:04.42 0.3 undecidable manual S 129 13.2756 120 -0.23 71
IV.ASSB.HHZ. 2021-04-08T14:05:03.09 0.1 undecidable manual P 260 17.6712 113 -0.11 97
IV.MML1.EHE. 2021-04-08T14:05:03.55 0.3 undecidable manual S 59 9.3795 129 0.03 75
IV.FDMO.HHZ. 2021-04-08T14:05:03.12 0.1 undecidable manual P 102 17.7711 113 -0.09 97
IT.MTCL.HGN. 2021-04-08T14:05:02.35 0.3 undecidable manual P 129 13.2756 120 -0.06 74
IV.CESI.HHZ. 2021-04-08T14:05:02.57 0.3 undecidable manual S 161 7.6812 135 -0.52 68
IV.MML1.EHE. 2021-04-08T14:05:01.78 0.1 positive manual P 59 9.3795 129 0.02 100
IV.CESI.HHZ. 2021-04-08T14:05:01.24 0.1 positive manual P 161 7.6812 135 -0.27 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.3 0.0003551974 0.2624 AML other m 2021-04-08T14:05:02.82
IV.CESI.HHE. ML:1.4 0.00048450000000000007 0.26 AML other m 2021-04-08T14:05:03.11
IV.FDMO.HHE. ML:1.1 0.00010284999999999999 0.24 AML other m 2021-04-08T14:05:06.18
IV.FDMO.HHN. ML:1.3 0.0001905 0.16 AML other m 2021-04-08T14:05:06.42
IV.ASSB.HHN. ML:1.3 0.0001809756 0.1792 AML other m 2021-04-08T14:05:06.14
IV.ASSB.HHE. ML:1.1 0.00011722975 0.1792 AML other m 2021-04-08T14:05:07.71
IV.ATCC.EHN. ML:1.0 0.00006145964 0.16 AML other m 2021-04-08T14:05:08.99
IV.CSP1.EHE. ML:1.8 0.0003145 0.24 AML other m 2021-04-08T14:05:09.50
IV.ATCC.EHE. ML:1.0 0.00006529199 0.1792 AML other m 2021-04-08T14:05:10.33
IV.CSP1.EHN. ML:1.5 0.0001607337 0.1408 AML other m 2021-04-08T14:05:09.76
IV.EL6.EHN. ML:1.5 0.0001314 1.2 AML other m 2021-04-08T14:05:12.97
IV.EL6.EHE. ML:1.5 0.000145086895 0.2176 AML other m 2021-04-08T14:05:11.88
IV.CESI.HNN. ML:1.3 0.00035261505 0.256 AML other m 2021-04-08T14:05:02.83
IV.CESI.HNE. ML:1.5 0.0005080643999999999 0.2496 AML other m 2021-04-08T14:05:03.24
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