Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 27-07-2021 and time 06:43:57 (Italy) in region 7 km W Monte Cavallo (MC)

A magnitude ML 1.9 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 27-07-2021 04:43:57 (UTC)
  • 27-07-2021 06:43:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0140, 12.9240 at 11 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 7 145 145
Serravalle di Chienti MC 7 1070 1215
Pieve Torina MC 11 1458 2673
Muccia MC 13 915 3588
Sellano PG 14 1079 4667
Fiordimonte MC 14 202 4869
Pievebovigliana MC 14 866 5735
Valtopina PG 15 1398 7133
Sefro MC 15 422 7555
Nocera Umbra PG 15 5839 13394
Visso MC 16 1107 14501
Preci PG 18 724 15225
Camerino MC 18 6974 22199
Foligno PG 19 57155 79354
Fiastra MC 19 559 79913
Pioraco MC 19 1134 81047
Ussita MC 19 444 81491
Fiuminata MC 20 1402 82893

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
98 Km SE of Arezzo (99543 inhabitants)
100 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 2021-07-27
04:43:57		 43.0142 12.9237 11 2021-12-29
11:12:32		 Bollettino Sismico Italiano INGV 95780311
Reviewed
Rev100 		ML 2.0 2021-07-27
04:43:57		 43.0113 12.9197 11 2021-07-27
04:53:54		 Sala Sismica INGV-Roma 93257671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-27 04:43:57 ± 0.03
Latitude 43.0142 ± 0.0018
Longitude 12.9237 ± 0.0025
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95780311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 176
Semi-minor axis of confidence ellipse (meter) 168
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 32
Number of associated phases, regardless of their use for origin computation 68
Number of defining phases 61
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.15208
Number of stations at which the event was observed 46
Number of stations from which data was used for origin computation 40
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 95780311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-23 10:25:48

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 85
Type of magnitude ML
Reference to an origin 93257671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-27 04:53:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSFT.HHZ. 2021-07-27T04:45:05.45 3.0 undecidable manual Sn 0.57 0
IV.SGG.HHZ. 2021-07-27T04:45:00.22 3.0 undecidable manual Sg 5.36 0
IV.GIUL.HHZ. 2021-07-27T04:44:40.46 3.0 undecidable manual S -2.68 0
GU.GSCL.HHZ. 2021-07-27T04:44:40.46 3.0 negative manual P 238.8831 6.78 0
IV.VIVA.HHZ. 2021-07-27T04:44:39.05 3.0 undecidable manual S 140.748 1.69 0
IV.VIVA.HHZ. 2021-07-27T04:44:18.17 3.0 positive manual P 140.748 -2.27 0
IV.FIAM.HHZ. 2021-07-27T04:44:11.91 0.6 undecidable manual P 169 84.249 50 0.18 42
IV.COR1.EHZ. 2021-07-27T04:44:10.24 3.0 undecidable manual P 68.7756 0.9 0
IV.NARO.HHZ. 2021-07-27T04:44:09.52 0.6 undecidable manual P 337 71.7726 50 -0.28 42
IV.GAVE.EHZ. 2021-07-27T04:44:09.48 0.3 undecidable manual S 184 35.8419 50 0.14 70
IV.MPAG.EHZ. 2021-07-27T04:44:09.40 0.6 undecidable manual P 349 69.4749 50 -0.05 45
IV.GUMA.HHZ. 2021-07-27T04:44:09.49 0.6 undecidable manual S 81 33.8439 50 0.68 40
IV.MOMA.HHZ. 2021-07-27T04:44:09.96 0.3 undecidable manual S 231 37.0296 50 0.3 67
IV.FOSV.EHZ. 2021-07-27T04:44:08.84 0.3 undecidable manual S 337 33.8439 50 0.04 72
IV.PIEI.HHZ. 2021-07-27T04:44:08.72 0.6 undecidable manual P 332 65.7897 50 -0.16 44
IV.ATCC.EHZ. 2021-07-27T04:44:08.03 0.3 undecidable manual S 310 29.748 50 0.29 68
IV.ATPI.EHZ. 2021-07-27T04:44:08.76 0.6 undecidable manual P 319 64.1913 50 0.13 44
IV.MTL1.HNZ. 2021-07-27T04:44:07.55 1.0 undecidable manual S 14 27.75 50 0.35 23
IV.FRON.EHZ. 2021-07-27T04:44:07.62 0.6 undecidable manual P 344 58.0974 50 -0.08 45
IV.RM33.EHZ. 2021-07-27T04:44:07.96 0.6 undecidable manual P 157 60.8946 50 -0.16 44
IV.SMA1.EHZ. 2021-07-27T04:44:07.08 1.0 undecidable manual P 142 54.2013 50 -0.01 23
IV.ATVO.HHZ. 2021-07-27T04:44:07.81 0.6 undecidable manual P 314 58.3971 50 0.07 45
IV.NRCA.HNZ. 2021-07-27T04:44:06.24 0.3 undecidable manual S 142 25.3524 50 -0.3 69
IV.ARVD.HHZ. 2021-07-27T04:44:06.92 0.3 undecidable manual P 2 53.7018 50 -0.09 68
IV.MC2.EHZ. 2021-07-27T04:44:06.59 0.3 undecidable manual S 118 24.3534 50 0.3 69
IV.PF6.EHZ. 2021-07-27T04:44:06.61 0.3 undecidable manual S 58 25.8519 50 -0.08 72
IV.CESX.HHZ. 2021-07-27T04:44:06.64 0.6 undecidable manual P 211 52.7028 50 -0.22 44
IV.CSP1.EHZ. 2021-07-27T04:44:06.45 0.3 undecidable manual S 69 24.3534 50 0.16 71
IV.SSFR.HHZ. 2021-07-27T04:44:06.07 0.6 undecidable manual P 346 48.2184 50 -0.1 46
IV.ARRO.EHZ. 2021-07-27T04:44:06.23 0.3 undecidable manual P 195 49.9167 50 -0.21 67
IV.MDAR.HNZ. 2021-07-27T04:44:06.88 0.3 undecidable manual S 42 26.5512 50 0 73
IV.MURB.HHZ. 2021-07-27T04:44:05.42 0.1 undecidable manual P 311 42.5241 50 0.13 92
IV.MF5.EHZ. 2021-07-27T04:44:05.96 0.6 undecidable manual P 94 43.623 50 0.5 42
IV.CING.HHZ. 2021-07-27T04:44:05.80 0.3 undecidable manual P 29 45.7209 50 0.01 70
IV.LNSS.HHZ. 2021-07-27T04:44:05.65 0.3 undecidable manual P 168 46.62 50 -0.27 67
IV.ASSB.HHZ. 2021-07-27T04:44:05.44 0.3 undecidable manual S 278 21.7671 50 -0.14 72
IV.MTRA.EHZ. 2021-07-27T04:44:05.97 0.3 undecidable manual P 126 47.9187 50 -0.15 68
IV.MOMA.HHZ. 2021-07-27T04:44:04.36 0.6 undecidable manual P 231 37.0296 50 -0.08 47
IV.FIU1.HNZ. 2021-07-27T04:44:04.70 0.3 undecidable manual S 2 19.3695 50 -0.25 70
IV.EL6.EHZ. 2021-07-27T04:44:04.55 0.3 undecidable manual P 22 37.8288 50 -0.02 71
IT.FOPC.HGZ. 2021-07-27T04:44:04.87 0.6 undecidable manual S 255 18.5703 50 0.13 48
IV.PIO1.HNZ. 2021-07-27T04:44:04.74 1.0 undecidable manual S 15 18.87 50 -0.07 24
IV.GAVE.EHZ. 2021-07-27T04:44:04.12 0.1 positive manual P 184 35.8419 50 -0.14 93
IV.GUMA.HHZ. 2021-07-27T04:44:04.20 0.1 positive manual P 81 33.8439 50 0.25 91
IV.ATCC.EHZ. 2021-07-27T04:44:03.39 0.1 positive manual P 310 29.748 50 0.06 96
IV.SEF1.HNE. 2021-07-27T04:44:03.64 0.3 undecidable manual S 8 14.874 127 -0.09 73
IV.FOSV.EHZ. 2021-07-27T04:44:03.83 0.1 positive manual P 337 33.8439 50 -0.12 94
IV.MTL1.HNZ. 2021-07-27T04:44:03.05 0.6 undecidable manual P 14 27.75 50 0.03 48
IV.FDMO.HHZ. 2021-07-27T04:44:03.20 0.3 undecidable manual S 79 13.4754 129 -0.16 72
IV.FEMA.HNZ. 2021-07-27T04:44:02.80 0.6 undecidable manual S 119 11.7771 133 -0.1 49
IV.MDAR.HNZ. 2021-07-27T04:44:02.77 0.3 undecidable manual P 42 26.5512 50 -0.07 72
IV.NRCA.HNZ. 2021-07-27T04:44:02.41 0.1 undecidable manual P 142 25.3524 50 -0.23 93
IV.MML1.EHZ. 2021-07-27T04:44:02.89 0.6 undecidable manual S 19 11.6772 133 0.01 50
IV.MC2.EHZ. 2021-07-27T04:44:02.42 0.1 undecidable manual P 118 24.3534 50 -0.08 96
IV.PF6.EHZ. 2021-07-27T04:44:02.65 0.3 undecidable manual P 58 25.8519 50 -0.08 72
IV.CSP1.EHZ. 2021-07-27T04:44:02.46 0.1 positive manual P 69 24.3534 50 -0.03 97
IV.CESI.HHZ. 2021-07-27T04:44:01.25 0.3 undecidable manual S 236 1.8981 170 0.06 75
IV.ASSB.HHZ. 2021-07-27T04:44:01.99 0.1 negative manual P 278 21.7671 50 -0.1 96
IT.MTCL.HGZ. 2021-07-27T04:44:01.75 0.3 undecidable manual S 110 6.5934 149 -0.01 76
IV.SEF1.HNE. 2021-07-27T04:44:01.01 0.1 undecidable manual P 8 14.874 127 -0.01 99
IV.FIU1.HNZ. 2021-07-27T04:44:01.63 0.3 undecidable manual P 2 19.3695 50 -0.09 73
IT.FOPC.HGZ. 2021-07-27T04:44:01.75 0.1 undecidable manual P 255 18.5703 50 0.15 96
IV.PIO1.HNZ. 2021-07-27T04:44:01.43 0.6 undecidable manual P 15 18.87 50 -0.21 47
IV.FDMO.HHZ. 2021-07-27T04:44:00.67 1.0 undecidable manual P 79 13.4754 129 -0.13 24
IV.FEMA.HNZ. 2021-07-27T04:44:00.68 0.1 undecidable manual P 119 11.7771 133 0.14 97
IV.MML1.EHZ. 2021-07-27T04:44:00.64 0.1 undecidable manual P 19 11.6772 133 0.11 98
IV.CESI.HHZ. 2021-07-27T04:43:59.72 0.1 undecidable manual P 236 1.8981 170 0.17 98
IT.MTCL.HGZ. 2021-07-27T04:43:59.92 0.1 undecidable manual P 110 6.5934 149 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.9 0.000844 0.24 AML other m 2021-07-27T04:44:03.34
IV.FDMO.HHE. ML:1.8 0.00061806325 0.0992 AML other m 2021-07-27T04:44:03.33
IV.ASSB.HHN. ML:2.0 0.00068414525 0.0608 AML other m 2021-07-27T04:44:05.60
IV.ASSB.HHE. ML:2.1 0.0008095151999999999 0.0992 AML other m 2021-07-27T04:44:05.70
IV.ATCC.EHN. ML:1.9 0.0004155896 0.2784 AML other m 2021-07-27T04:44:08.19
IV.ATCC.EHE. ML:2.2 0.0007895 0.12 AML other m 2021-07-27T04:44:08.22
IV.GAVE.HNE. ML:1.8 0.00023700505 0.7904 AML other m 2021-07-27T04:44:10.42
IV.GAVE.EHE. ML:1.9 0.00029126955 1.4592 AML other m 2021-07-27T04:44:10.49
IV.GAVE.EHN. ML:2.1 0.00044943435 0.56 AML other m 2021-07-27T04:44:10.52
IV.LNSS.HNN. ML:1.9 0.00021620435 0.1312 AML other m 2021-07-27T04:44:12.75
IV.MTRA.HNN. ML:1.8 0.00019711620000000002 0.192 AML other m 2021-07-27T04:44:13.05
IV.MTRA.EHN. ML:1.8 0.0001965 0.18 AML other m 2021-07-27T04:44:13.06
IV.MTRA.EHE. ML:1.8 0.00017240018 0.1184 AML other m 2021-07-27T04:44:13.43
IV.MTRA.HNE. ML:1.8 0.00016837796350000002 0.1184 AML other m 2021-07-27T04:44:13.43
IV.LNSS.HHE. ML:2.2 0.00040231385 0.1216 AML other m 2021-07-27T04:44:13.42
IV.LNSS.HNE. ML:2.1 0.00035760400000000003 0.128 AML other m 2021-07-27T04:44:13.43
IV.LNSS.HHN. ML:1.9 0.00020349985 0.1984 AML other m 2021-07-27T04:44:15.28
IV.GAVE.HNN. ML:1.6 0.0001657004 0.7296 AML other m 2021-07-27T04:44:10.21
IV.SMA1.EHN. ML:1.7 0.00011008413000000001 0.1216 AML other m 2021-07-27T04:44:16.56
IV.FRON.EHE. ML:1.6 0.00008985000000000002 0.16 AML other m 2021-07-27T04:44:16.95
IV.FRON.EHN. ML:1.8 0.00011912570999999999 0.0992 AML other m 2021-07-27T04:44:17.70
IV.RM33.EHE. ML:1.6 0.000089763125 0.2208 AML other m 2021-07-27T04:44:17.70
IV.ATPI.EHN. ML:1.7 0.00009120000000000001 0.3 AML other m 2021-07-27T04:44:18.10
IV.ATPI.EHE. ML:1.7 0.00009035 0.44 AML other m 2021-07-27T04:44:18.13
IV.ATPI.HNE. ML:1.8 0.00012693428 0.512 AML other m 2021-07-27T04:44:18.34
IV.SMA1.EHE. ML:1.8 0.00015226210000000002 0.32 AML other m 2021-07-27T04:44:19.56
IV.CESX.HHE. ML:1.8 0.00016860705 0.3616 AML other m 2021-07-27T04:44:20.20
IV.CESX.HHN. ML:1.8 0.00015159844999999999 0.3808 AML other m 2021-07-27T04:44:20.01
IV.RM33.HNN. ML:1.9 0.000148124345 0.352 AML other m 2021-07-27T04:44:21.79
IV.RM33.EHN. ML:1.8 0.00011300000000000001 0.34 AML other m 2021-07-27T04:44:21.62
IV.ATPI.HNN. ML:1.9 0.00015070359999999998 0.4384 AML other m 2021-07-27T04:44:25.23
IV.RM33.HNE. ML:1.8 0.00013046349 0.64 AML other m 2021-07-27T04:44:27.03
IV.GUMA.HHN. ML:0.0 0.000627 0.22 AML other m 2021-07-27T04:44:09.75
IV.GUMA.HNE. ML:0.0 0.0010162550000000002 0.16 AML other m 2021-07-27T04:44:09.69
IV.GUMA.HHE. ML:0.0 0.00166417 0.1984 AML other m 2021-07-27T04:44:09.72
IV.GUMA.HNN. ML:0.0 0.0011165555 0.1984 AML other m 2021-07-27T04:44:09.62
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
Waveforms Seismic signals in miniseed + resp format Download