Earthquake with magnitude of ML 1.9 on date 23-03-2021 and time 03:34:50 (Italy) in region 6 km SW Serravalle di Chienti (MC)

A magnitude ML 1.9 earthquake occured in region: 6 km SW Serravalle di Chienti (MC), on

  • 23-03-2021 02:34:50 (UTC)
  • 23-03-2021 03:34:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0430, 12.8930 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.

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 10 145 1215
Nocera Umbra PG 11 5839 7054
Valtopina PG 11 1398 8452
Sefro MC 13 422 8874
Pieve Torina MC 13 1458 10332
Muccia MC 13 915 11247
Pievebovigliana MC 16 866 12113
Fiordimonte MC 16 202 12315
Fiuminata MC 17 1402 13717
Pioraco MC 17 1134 14851
Sellano PG 17 1079 15930
Camerino MC 18 6974 22904
Foligno PG 18 57155 80059
Spello PG 19 8645 88704

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Foligno (57155 inhabitants)
42 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
79 Km NW of Teramo (54892 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
94 Km SE of Arezzo (99543 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
97 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
Bulletin
Rev1000
ML 1.9 2021-03-23
02:34:50
43.0428 12.8927 8 2021-07-12
16:55:17
Bollettino Sismico Italiano INGV 92156201
Reviewed
Rev100
ML 1.9 2021-03-23
02:34:50
43.042 12.8895 9 2021-03-23
02:43:45
Sala Sismica INGV-Roma 88396651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-23 02:34:50 ± 0.03
Latitude 43.0428 ± 0.0018
Longitude 12.8927 ± 0.0025
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 92156201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 211
Semi-minor axis of confidence ellipse (meter) 203
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
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) 45
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.66910
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 88396651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-23 02:43:45

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 92156201
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-02 15:50:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.HNE. 2021-03-23T02:35:11.54 0.6 undecidable manual S 156 64.7907 50 0.38 42
IV.T1299.HNN. 2021-03-23T02:35:09.38 0.6 undecidable manual S 145 55.3002 50 0.75 38
IV.CESX.HHE. 2021-03-23T02:35:09.07 0.6 undecidable manual S 207 54.2013 50 0.72 38
IV.ARRO.EHZ. 2021-03-23T02:35:08.12 0.6 undecidable manual S 191 52.503 50 0.25 44
IV.LNSS.HNZ. 2021-03-23T02:35:07.23 0.6 undecidable manual S 166 50.3163 50 -0.06 46
IV.MURB.HNZ. 2021-03-23T02:35:04.17 0.6 undecidable manual S 309 38.5281 50 0.02 47
IV.MOMA.HNZ. 2021-03-23T02:35:04.15 0.6 undecidable manual S 225 37.2294 50 0.33 44
IV.GUMA.HHZ. 2021-03-23T02:35:04.11 0.6 undecidable manual S 86 35.9418 50 0.65 41
IV.GAVE.EHZ. 2021-03-23T02:35:04.09 0.6 undecidable manual S 180 38.9277 50 -0.16 46
IV.MMO1.EHZ. 2021-03-23T02:35:03.89 0.6 undecidable manual S 114 38.628 50 -0.3 45
IV.EL6.EHZ. 2021-03-23T02:35:03.28 0.6 undecidable manual S 28 36.0417 50 -0.2 46
IV.TERO.HNZ. 2021-03-23T02:35:03.90 0.3 undecidable manual P 129 74.2701 50 -0.12 65
IV.NARO.HHZ. 2021-03-23T02:35:02.88 0.3 undecidable manual P 338 67.8765 50 -0.14 66
IV.RM33.HNE. 2021-03-23T02:35:02.27 0.3 undecidable manual P 156 64.7907 50 -0.28 64
IV.T1299.HNN. 2021-03-23T02:35:01.00 0.3 undecidable manual P 145 55.3002 50 -0.09 68
IV.NRCA.HHZ. 2021-03-23T02:35:01.28 0.6 undecidable manual S 142 29.3484 106 -0.1 47
IV.FOSV.EHZ. 2021-03-23T02:35:01.58 0.6 undecidable manual S 339 29.9478 105 0.02 48
IV.MF5.EHZ. 2021-03-23T02:35:00.08 0.3 undecidable manual P 97 46.4202 50 0.36 65
IV.ARRO.EHZ. 2021-03-23T02:35:00.43 0.1 undecidable manual P 191 52.503 50 -0.22 88
IV.CESX.HHE. 2021-03-23T02:35:00.94 0.6 undecidable manual P 207 54.2013 50 0.01 46
IV.CSP1.EHZ. 2021-03-23T02:35:00.32 0.6 undecidable manual S 78 25.8519 108 0.1 48
IV.PF6.EHN. 2021-03-23T02:35:00.49 0.6 undecidable manual S 67 26.6511 107 0.03 48
IV.ATCC.EHE. 2021-03-23T02:35:00.48 0.6 undecidable manual S 308 25.8519 108 0.27 46
IV.LNSS.HNZ. 2021-03-23T02:35:00.04 0.1 undecidable manual P 166 50.3163 50 -0.28 88
IV.ARVD.HHZ. 2021-03-23T02:35:00.08 0.3 undecidable manual P 4 50.616 50 -0.29 66
IV.SNTG.HHZ. 2021-03-23T02:34:59.35 0.6 undecidable manual S 9 23.8539 109 -0.2 47
IV.ATFO.HHZ. 2021-03-23T02:34:59.44 0.3 undecidable manual P 324 44.3223 50 0.04 70
IV.SSFR.HHZ. 2021-03-23T02:34:59.19 0.3 undecidable manual P 348 44.5221 50 -0.24 67
IV.GUMA.HHZ. 2021-03-23T02:34:58.18 0.1 undecidable manual P 86 35.9418 50 0.07 94
IV.GAVE.EHZ. 2021-03-23T02:34:58.32 0.1 undecidable manual P 180 38.9277 50 -0.24 90
IV.MURB.HNZ. 2021-03-23T02:34:58.41 0.3 undecidable manual P 309 38.5281 50 -0.09 70
IV.MMO1.EHZ. 2021-03-23T02:34:58.33 0.3 undecidable manual P 114 38.628 50 -0.2 68
IV.MOMA.HNZ. 2021-03-23T02:34:58.28 0.6 undecidable manual P 225 37.2294 50 -0.03 47
IV.FOSV.EHZ. 2021-03-23T02:34:57.01 0.3 undecidable manual P 339 29.9478 105 0 72
IV.FIU1.HNZ. 2021-03-23T02:34:57.18 0.6 undecidable manual S 11 16.4724 117 -0.01 49
IV.EL6.EHZ. 2021-03-23T02:34:57.91 0.1 undecidable manual P 28 36.0417 50 -0.2 91
IV.ASSB.HHZ. 2021-03-23T02:34:57.95 0.6 undecidable manual S 270 18.9699 114 -0.03 49
IV.NRCA.HHZ. 2021-03-23T02:34:56.77 0.1 undecidable manual P 142 29.3484 106 -0.14 94
IV.SEF1.HNN. 2021-03-23T02:34:56.00 0.6 undecidable manual S 21 12.3765 124 0.05 49
IV.CSP1.EHZ. 2021-03-23T02:34:56.28 0.1 undecidable manual P 78 25.8519 108 0.05 96
IV.PF6.EHN. 2021-03-23T02:34:56.38 0.1 undecidable manual P 67 26.6511 107 0.01 97
IV.ATCC.EHE. 2021-03-23T02:34:56.30 0.1 undecidable manual P 308 25.8519 108 0.07 96
IV.ASSB.HHZ. 2021-03-23T02:34:55.07 0.1 undecidable manual P 270 18.9699 114 0.13 96
IV.MML1.HNE. 2021-03-23T02:34:55.39 0.6 undecidable manual S 39 10.0788 129 0.06 49
IV.SNTG.HHZ. 2021-03-23T02:34:55.90 0.1 undecidable manual P 9 23.8539 109 0.05 96
IT.MTCL.HGZ. 2021-03-23T02:34:55.29 0.6 undecidable manual S 122 10.1787 129 -0.06 49
IV.FIU1.HNZ. 2021-03-23T02:34:54.59 0.3 undecidable manual P 11 16.4724 117 0.11 72
IT.MTCL.HGZ. 2021-03-23T02:34:53.64 0.1 undecidable manual P 122 10.1787 129 0.21 95
IV.SEF1.HNN. 2021-03-23T02:34:53.94 0.3 undecidable manual P 21 12.3765 124 0.17 72
IV.CESI.HHZ. 2021-03-23T02:34:53.64 0.3 undecidable manual S 167 4.2957 152 -0.39 70
IV.MML1.HNE. 2021-03-23T02:34:53.60 0.1 undecidable manual P 39 10.0788 129 0.19 96
IV.CESI.HHZ. 2021-03-23T02:34:52.70 0.1 undecidable manual P 167 4.2957 152 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:1.8 0.0005615 1.26 AML other m 2021-03-23T02:34:58.86
IV.ASSB.HHN. ML:1.9 0.0006165000000000001 0.44 AML other m 2021-03-23T02:34:58.89
IV.SNTG.HHE. ML:1.1 0.0000835 0.1 AML other m 2021-03-23T02:34:59.89
IV.SNTG.HHN. ML:1.4 0.0001785 0.12 AML other m 2021-03-23T02:34:59.90
IV.CSP1.EHE. ML:2.0 0.0006165000000000001 0.3 AML other m 2021-03-23T02:35:00.72
IV.NRCA.HHN. ML:1.9 0.0003655 0.14 AML other m 2021-03-23T02:35:01.81
IV.NRCA.HHE. ML:1.6 0.0002065 1.56 AML other m 2021-03-23T02:35:02.91
IV.CSP1.EHN. ML:1.9 0.00044500000000000003 0.44 AML other m 2021-03-23T02:35:03.62
IV.EL6.EHE. ML:2.1 0.000505 0.44 AML other m 2021-03-23T02:35:03.91
IV.EL6.EHN. ML:2.0 0.0003655 0.62 AML other m 2021-03-23T02:35:03.48
IV.GUMA.HHN. ML:1.8 0.0002755 0.62 AML other m 2021-03-23T02:35:04.65
IV.GAVE.EHE. ML:2.1 0.000431 0.28 AML other m 2021-03-23T02:35:04.65
IV.GAVE.EHN. ML:2.0 0.0003215 1.48 AML other m 2021-03-23T02:35:04.95
IV.GUMA.HHE. ML:1.9 0.00029749999999999997 0.44 AML other m 2021-03-23T02:35:06.09
IV.SSFR.HHE. ML:1.9 0.00025550000000000003 0.2 AML other m 2021-03-23T02:35:06.43
IV.SSFR.HNE. ML:2.0 0.0003345 1.18 AML other m 2021-03-23T02:35:06.93
IV.SSFR.HHN. ML:1.8 0.00020400000000000003 0.24 AML other m 2021-03-23T02:35:07.23
IV.SSFR.HNN. ML:2.0 0.000279 1.28 AML other m 2021-03-23T02:35:07.24
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