Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 08-08-2021 and time 17:33:38 (Italy) in region 6 km W Monte Cavallo (MC)

A magnitude ML 1.9 earthquake occured in region: 6 km W Monte Cavallo (MC), on

  • 08-08-2021 15:33:38 (UTC)
  • 08-08-2021 17:33:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0020, 12.9340 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
Monte Cavallo MC 6 145 145
Serravalle di Chienti MC 8 1070 1215
Pieve Torina MC 11 1458 2673
Sellano PG 13 1079 3752
Muccia MC 13 915 4667
Fiordimonte MC 13 202 4869
Pievebovigliana MC 14 866 5735
Visso MC 15 1107 6842
Valtopina PG 16 1398 8240
Preci PG 16 724 8964
Sefro MC 16 422 9386
Nocera Umbra PG 17 5839 15225
Ussita MC 18 444 15669
Camerino MC 19 6974 22643
Fiastra MC 19 559 23202
Foligno PG 19 57155 80357
Acquacanina MC 20 121 80478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
94 Km S of Fano (60888 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 2021-08-08
15:33:38		 43.0017 12.934 9 2021-12-29
11:12:53		 Bollettino Sismico Italiano INGV 98344091
Reviewed
Rev100 		ML 1.9 2021-08-08
15:33:38		 43.0043 12.9402 10 2021-08-08
15:45:33		 Sala Sismica INGV-Roma 93848511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-08 15:33:38 ± 0.03
Latitude 43.0017 ± 0.0018
Longitude 12.9340 ± 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 98344091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 209
Semi-minor axis of confidence ellipse (meter) 156
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
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) 29
Number of associated phases, regardless of their use for origin computation 63
Number of defining phases 61
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60794
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 98344091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-09 13:19:55

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 93848511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-08 15:45:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIDA.HHZ. 2021-08-08T15:34:10.97 3.0 undecidable manual Pg 3.6 0
IV.RM33.EHZ. 2021-08-08T15:33:57.30 0.3 undecidable manual S 157 59.1963 50 0.16 67
IV.ARVD.HHZ. 2021-08-08T15:33:56.44 0.3 undecidable manual S 1 55.1004 50 0.41 64
IV.CESX.HHZ. 2021-08-08T15:33:55.34 0.3 undecidable manual S 213 52.0035 50 0.14 68
IV.MMUR.HNE. 2021-08-08T15:33:54.70 0.3 undecidable manual S 6 49.1175 50 0.26 67
IV.ARRO.EHZ. 2021-08-08T15:33:54.55 0.3 undecidable manual S 196 48.8178 50 0.19 68
IV.MF5.EHZ. 2021-08-08T15:33:53.22 0.3 undecidable manual S 92 42.7239 50 0.5 65
IV.LNSS.HHZ. 2021-08-08T15:33:53.10 0.3 undecidable manual S 169 45.0216 50 -0.26 68
IV.CING.HHZ. 2021-08-08T15:33:53.97 0.3 undecidable manual S 27 46.5201 50 0.21 68
IV.SAP2.EHZ. 2021-08-08T15:33:52.39 0.3 undecidable manual S 74 39.1275 50 0.61 62
IV.EL6.EHZ. 2021-08-08T15:33:51.48 0.3 undecidable manual S 20 38.8278 50 -0.21 69
IV.GUMA.HHZ. 2021-08-08T15:33:50.42 0.3 undecidable manual S 78 33.2445 50 0.22 70
IV.GAVE.EHZ. 2021-08-08T15:33:50.33 0.3 undecidable manual S 185 34.4433 50 -0.2 70
IV.MGAB.HHZ. 2021-08-08T15:33:50.87 0.6 undecidable manual P 262 67.4769 50 0.39 42
IV.FOSV.EHZ. 2021-08-08T15:33:50.42 0.3 undecidable manual S 337 35.4423 50 -0.36 67
IV.PIEI.HHZ. 2021-08-08T15:33:50.61 0.3 undecidable manual P 332 67.4769 50 0.13 67
IV.RM33.EHZ. 2021-08-08T15:33:49.01 0.3 undecidable manual P 157 59.1963 50 -0.2 67
IV.ATCC.EHZ. 2021-08-08T15:33:49.72 0.3 undecidable manual S 311 31.3464 106 0.03 73
IV.ARVD.HHZ. 2021-08-08T15:33:48.34 0.1 undecidable manual P 1 55.1004 50 -0.23 89
IV.MTL1.HNZ. 2021-08-08T15:33:48.97 0.3 undecidable manual S 12 28.9488 107 0.07 72
IV.SSFR.HNZ. 2021-08-08T15:33:48.14 3.0 negative manual P 0.32 0
IV.ARRO.EHZ. 2021-08-08T15:33:47.44 0.1 undecidable manual P 196 48.8178 50 -0.17 91
IV.CESX.HHZ. 2021-08-08T15:33:47.84 0.1 undecidable manual P 213 52.0035 50 -0.25 89
IV.PF6.EHZ. 2021-08-08T15:33:47.45 0.3 undecidable manual S 54 25.9518 109 -0.46 67
IV.CING.HHZ. 2021-08-08T15:33:47.02 0.1 undecidable manual P 27 46.5201 50 -0.24 90
IV.CSP1.EHZ. 2021-08-08T15:33:47.12 0.3 undecidable manual S 65 24.1536 110 -0.19 71
IV.MMUR.HNE. 2021-08-08T15:33:47.43 0.6 undecidable manual P 6 49.1175 50 -0.22 45
IV.FIU1.HNZ. 2021-08-08T15:33:46.00 0.3 undecidable manual S 359 20.7681 113 -0.22 71
IV.ASSB.HHZ. 2021-08-08T15:33:46.79 0.3 undecidable manual S 282 22.755 111 -0.08 73
IV.MF5.EHZ. 2021-08-08T15:33:46.95 0.1 undecidable manual P 92 42.7239 50 0.28 90
IV.PIO1.HNZ. 2021-08-08T15:33:46.04 0.3 undecidable manual S 12 19.9689 114 0.06 74
IV.NRCA.HHZ. 2021-08-08T15:33:46.82 0.3 undecidable manual S 142 23.6541 111 -0.35 69
IV.LNSS.HHZ. 2021-08-08T15:33:46.77 0.1 undecidable manual P 169 45.0216 50 -0.26 90
IT.FOPC.HGZ. 2021-08-08T15:33:46.25 0.3 undecidable manual S 259 19.0698 115 0.56 66
IV.MURB.HHZ. 2021-08-08T15:33:46.80 0.3 undecidable manual P 311 44.0226 50 -0.07 70
IV.SAP2.EHZ. 2021-08-08T15:33:46.56 0.6 undecidable manual P 74 39.1275 50 0.44 44
IV.FOSV.EHZ. 2021-08-08T15:33:45.35 0.3 undecidable manual P 337 35.4423 50 -0.19 70
IV.MOMA.HNZ. 2021-08-08T15:33:45.60 0.3 undecidable manual P 234 36.8298 50 -0.16 70
IV.EL6.EHZ. 2021-08-08T15:33:45.81 0.1 undecidable manual P 20 38.8278 50 -0.26 91
IV.GUMA.HHZ. 2021-08-08T15:33:45.22 0.3 undecidable manual P 78 33.2445 50 0.01 73
IV.GAVE.EHZ. 2021-08-08T15:33:45.24 0.1 undecidable manual P 185 34.4433 50 -0.16 94
IV.SEF1.HNZ. 2021-08-08T15:33:44.82 0.3 undecidable manual S 4 16.1727 119 0.04 74
IV.ATCC.EHZ. 2021-08-08T15:33:44.71 0.3 undecidable manual P 311 31.3464 106 -0.2 70
IV.MTL1.HNZ. 2021-08-08T15:33:44.32 0.6 undecidable manual P 12 28.9488 107 -0.14 48
IV.MML1.EHZ. 2021-08-08T15:33:43.91 0.3 undecidable manual S 14 12.7761 125 0.12 74
IV.PF6.EHZ. 2021-08-08T15:33:43.65 0.1 undecidable manual P 54 25.9518 109 -0.23 94
IV.CSP1.EHZ. 2021-08-08T15:33:43.47 0.1 positive manual P 65 24.1536 110 -0.07 97
IV.MC2.EHZ. 2021-08-08T15:33:43.50 0.1 undecidable manual P 116 22.9548 111 0.17 95
IV.FEMA.HNZ. 2021-08-08T15:33:43.30 0.3 undecidable manual S 115 10.3785 131 0.18 73
IV.ASSB.HHZ. 2021-08-08T15:33:43.26 0.1 undecidable manual P 282 22.755 111 -0.03 98
IV.FDMO.HHZ. 2021-08-08T15:33:43.72 0.3 undecidable manual S 73 12.9759 124 -0.14 73
IV.NRCA.HHZ. 2021-08-08T15:33:43.41 0.1 undecidable manual P 142 23.6541 111 -0.05 98
IT.FOPC.HGZ. 2021-08-08T15:33:42.88 0.1 undecidable manual P 259 19.0698 115 0.28 94
IV.FIU1.HNZ. 2021-08-08T15:33:42.91 0.3 undecidable manual P 359 20.7681 113 0 74
IV.SEF1.HNZ. 2021-08-08T15:33:42.15 0.1 undecidable manual P 4 16.1727 119 0.07 99
IV.PIO1.HNZ. 2021-08-08T15:33:42.59 0.3 undecidable manual P 12 19.9689 114 -0.18 72
IV.CESI.HNZ. 2021-08-08T15:33:41.63 0.3 undecidable manual S 279 2.3976 165 0.05 76
IV.FDMO.HHZ. 2021-08-08T15:33:41.63 0.1 positive manual P 73 12.9759 124 0.08 99
IT.MTCL.HGZ. 2021-08-08T15:33:41.78 0.3 undecidable manual S 99 5.3946 149 -0.21 73
IV.MML1.EHZ. 2021-08-08T15:33:41.68 0.1 positive manual P 14 12.7761 125 0.17 97
IV.FEMA.HNZ. 2021-08-08T15:33:41.36 0.1 undecidable manual P 115 10.3785 131 0.24 96
IV.CESI.HNZ. 2021-08-08T15:33:40.48 0.1 undecidable manual P 279 2.3976 165 0.25 97
IT.MTCL.HGZ. 2021-08-08T15:33:40.56 0.1 undecidable manual P 99 5.3946 149 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNE. ML:0.0 0.004166071 0.1408 AML other m 2021-08-08T15:33:41.72
IV.MML1.HNN. ML:2.1 0.001555 0.12 AML other m 2021-08-08T15:33:44.16
IV.MML1.EHN. ML:2.1 0.001495344 0.128 AML other m 2021-08-08T15:33:44.17
IV.MML1.HNE. ML:2.6 0.0043 0.2 AML other m 2021-08-08T15:33:44.17
IV.MML1.EHE. ML:2.6 0.004375 0.2 AML other m 2021-08-08T15:33:44.17
IV.ASSB.HHN. ML:2.0 0.00061979415 0.1664 AML other m 2021-08-08T15:33:46.00
IV.ASSB.HHE. ML:1.8 0.000439 0.3 AML other m 2021-08-08T15:33:47.08
IV.CSP1.EHE. ML:2.2 0.001073791245 0.1024 AML other m 2021-08-08T15:33:47.65
IV.NRCA.HHN. ML:2.2 0.0010927517500000001 0.1152 AML other m 2021-08-08T15:33:47.94
IV.NRCA.HHE. ML:2.0 0.0007324257999999999 0.1024 AML other m 2021-08-08T15:33:47.21
IV.CSP1.EHN. ML:2.2 0.00113748 0.1664 AML other m 2021-08-08T15:33:48.63
IV.GUMA.HHN. ML:1.9 0.0003270506 0.3328 AML other m 2021-08-08T15:33:50.60
IV.ATCC.EHE. ML:1.4 0.00012712035 0.1536 AML other m 2021-08-08T15:33:50.64
IV.FOSV.EHE. ML:1.3 0.00007715616 0.1408 AML other m 2021-08-08T15:33:50.98
IV.GUMA.HHE. ML:2.1 0.00056276205 0.2816 AML other m 2021-08-08T15:33:50.52
IV.GAVE.EHE. ML:2.0 0.00045850000000000003 0.16 AML other m 2021-08-08T15:33:51.18
IV.GAVE.EHN. ML:2.0 0.0003775 0.22 AML other m 2021-08-08T15:33:51.55
IV.EL6.EHE. ML:2.1 0.0005357442 0.1408 AML other m 2021-08-08T15:33:52.84
IV.FOSV.EHN. ML:1.3 0.000074990265 0.2432 AML other m 2021-08-08T15:33:51.03
IV.EL6.EHN. ML:2.0 0.0003461945 0.1408 AML other m 2021-08-08T15:33:52.51
IV.ATCC.EHN. ML:1.4 0.00011441139 0.1152 AML other m 2021-08-08T15:33:51.14
IV.MF5.EHN. ML:0.0 0.00010703633500000001 0.1408 AML other m 2021-08-08T15:33:54.30
IV.LNSS.HHE. ML:2.0 0.0002922169 0.1408 AML other m 2021-08-08T15:33:53.53
IV.LNSS.HHN. ML:2.1 0.00037 0.2 AML other m 2021-08-08T15:33:53.73
IV.SAP2.EHE. ML:0.0 0.0002103136 0.1408 AML other m 2021-08-08T15:33:53.74
IV.CING.HHN. ML:1.8 0.000194 0.38 AML other m 2021-08-08T15:33:54.24
IV.CING.HHE. ML:1.7 0.00013439871 0.1408 AML other m 2021-08-08T15:33:54.36
IV.SAP2.EHN. ML:0.0 0.0013684455 0.1664 AML other m 2021-08-08T15:33:54.60
IV.ARRO.EHE. ML:1.6 0.00012020000000000001 0.22 AML other m 2021-08-08T15:33:54.81
IV.ARRO.EHN. ML:1.7 0.00014350000000000002 0.18 AML other m 2021-08-08T15:33:55.77
IV.MURB.HHE. ML:1.8 0.000219 0.3 AML other m 2021-08-08T15:33:56.16
IV.MURB.HHN. ML:1.8 0.0002135 0.26 AML other m 2021-08-08T15:33:56.42
IV.CESX.HHN. ML:1.6 0.00009005719000000001 0.2688 AML other m 2021-08-08T15:33:57.80
IV.ARVD.HHE. ML:2.0 0.00021885885 0.1408 AML other m 2021-08-08T15:33:56.68
IV.ARVD.HHN. ML:1.9 0.00017199999999999998 0.16 AML other m 2021-08-08T15:33:56.78
IV.CESX.HHE. ML:1.5 0.00008061342000000001 0.256 AML other m 2021-08-08T15:33:55.94
IV.MF5.EHE. ML:0.0 0.00010359942 0.1408 AML other m 2021-08-08T15:33:53.93
IV.RM33.EHE. ML:1.6 0.00008010000000000001 0.26 AML other m 2021-08-08T15:33:59.25
IV.MGAB.HHE. ML:1.3 0.0000359 1.3 AML other m 2021-08-08T15:34:02.82
IV.MGAB.HHN. ML:1.4 0.000045211935 0.2688 AML other m 2021-08-08T15:34:03.74
IV.RM33.EHN. ML:1.4 0.000052644085 0.1408 AML other m 2021-08-08T15:33:58.23
IV.PIEI.HHN. ML:1.2 0.00002595 0.12 AML other m 2021-08-08T15:34:03.72
IV.PIEI.HHE. ML:1.3 0.000033886584999999994 0.1152 AML other m 2021-08-08T15:34:02.69
IV.FEMA.HNE. ML:2.0 0.0013337445 0.192 AML other m 2021-08-08T15:33:44.29
IV.FEMA.HNN. ML:2.0 0.0013703545 0.128 AML other m 2021-08-08T15:33:43.99
IV.NRCA.HNN. ML:2.2 0.0009862139 0.1152 AML other m 2021-08-08T15:33:47.94
IV.NRCA.HNE. ML:2.0 0.0006745387 0.0768 AML other m 2021-08-08T15:33:48.01
IV.GUMA.HNN. ML:2.1 0.0005453049999999999 0.2688 AML other m 2021-08-08T15:33:51.06
IV.GUMA.HNE. ML:2.0 0.0004093305 0.2304 AML other m 2021-08-08T15:33:51.09
IV.GAVE.HNN. ML:1.4 0.0000995764445 0.128 AML other m 2021-08-08T15:33:51.16
IV.GAVE.HNE. ML:2.0 0.00044291095 0.1536 AML other m 2021-08-08T15:33:51.17
IV.LNSS.HNN. ML:2.1 0.00034847165 0.2816 AML other m 2021-08-08T15:33:53.73
IV.LNSS.HNE. ML:2.1 0.00041202337500000004 0.2304 AML other m 2021-08-08T15:33:53.29
IV.MURB.HNN. ML:1.9 0.00022937125 0.2816 AML other m 2021-08-08T15:33:56.41
IV.MURB.HNE. ML:1.9 0.00022830679999999998 0.2688 AML other m 2021-08-08T15:33:56.30
IV.RM33.HNE. ML:1.6 0.00008949864 0.192 AML other m 2021-08-08T15:33:59.35
IV.RM33.HNN. ML:1.5 0.00005893899 0.192 AML other m 2021-08-08T15:33:58.32
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