Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 12-07-2021 and time 01:34:33 (Italy) in region 10 km E Montone (PG)

A magnitude ML 0.5 earthquake occured in region: 10 km E Montone (PG), on

  • 11-07-2021 23:34:33 (UTC)
  • 12-07-2021 01:34:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3560, 12.4470 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Montone PG 10 1680 1680
Pietralunga PG 10 2111 3791
Gubbio PG 11 32216 36007
Umbertide PG 11 16681 52688
Scheggia e Pascelupo PG 19 1393 54081
Cantiano PU 20 2245 56326

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of Perugia (166134 inhabitants)
47 Km E of Arezzo (99543 inhabitants)
49 Km NW of Foligno (57155 inhabitants)
71 Km SW of Fano (60888 inhabitants)
72 Km SW of Pesaro (94582 inhabitants)
79 Km S of Rimini (147750 inhabitants)
88 Km S of Cesena (96758 inhabitants)
90 Km N of Terni (111501 inhabitants)
90 Km E of Siena (53903 inhabitants)
91 Km W of Ancona (100861 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 0.5 2021-07-11
23:34:33		 43.3558 12.4468 10 2021-12-29
11:12:13		 Bollettino Sismico Italiano INGV 93098481
Reviewed
Rev100 		ML 0.3 2021-07-11
23:34:33		 43.3598 12.4462 10 2021-07-11
23:56:24		 Sala Sismica INGV-Roma 92640301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-11 23:34:33 ± 0.06
Latitude 43.3558 ± 0.0027
Longitude 12.4468 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93098481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 158
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.27249
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 93098481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-23 08:26:41

ML:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 92640301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-11 23:56:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2021-07-11T23:34:43.34 0.6 undecidable manual S 72 28.4493 50 -0.34 45
IV.FRON.EHZ. 2021-07-11T23:34:43.46 0.3 undecidable manual S 51 28.749 50 -0.3 68
IV.NARO.HHZ. 2021-07-11T23:34:43.82 0.3 undecidable manual S 21 30.2475 50 -0.34 67
IV.BADI.EHZ. 2021-07-11T23:34:42.47 0.3 undecidable manual S 316 23.6541 113 0.19 70
IV.ATSC.EHZ. 2021-07-11T23:34:41.31 0.3 undecidable manual S 69 20.7681 116 -0.06 73
IV.PIEI.HHZ. 2021-07-11T23:34:41.48 0.3 undecidable manual S 20 21.1677 115 -0.04 73
IV.ATBU.HNZ. 2021-07-11T23:34:40.01 0.6 undecidable manual S 32 15.5733 123 0.19 48
IV.MURB.HHZ. 2021-07-11T23:34:39.03 0.3 undecidable manual S 149 12.0768 130 0.21 71
IV.NARO.HHZ. 2021-07-11T23:34:39.91 0.6 undecidable manual P 21 30.2475 50 0.3 45
IV.SSFR.HHZ. 2021-07-11T23:34:39.04 0.6 undecidable manual P 72 28.4493 50 -0.29 46
IV.ATMI.HHZ. 2021-07-11T23:34:39.47 0.3 undecidable manual S 261 14.6742 124 -0.06 73
IV.ATPC.HHZ. 2021-07-11T23:34:39.60 0.6 undecidable manual S 3 13.875 126 0.28 47
IV.FRON.EHZ. 2021-07-11T23:34:39.36 0.3 undecidable manual P 51 28.749 50 -0.01 72
IV.ATVA.EHZ. 2021-07-11T23:34:39.66 0.6 undecidable manual S 237 15.5733 123 -0.16 48
IV.ATSC.EHZ. 2021-07-11T23:34:38.05 0.1 undecidable manual P 69 20.7681 116 0.05 97
IV.ATPI.EHZ. 2021-07-11T23:34:38.45 0.3 undecidable manual S 341 11.0778 132 -0.12 73
IV.BADI.EHZ. 2021-07-11T23:34:38.75 0.3 undecidable manual P 316 23.6541 113 0.23 70
IV.PIEI.HHZ. 2021-07-11T23:34:38.29 0.3 undecidable manual P 20 21.1677 115 0.21 70
IV.ATCC.EHZ. 2021-07-11T23:34:38.56 0.3 undecidable manual P 140 24.5532 112 -0.13 71
IV.ATFO.HHZ. 2021-07-11T23:34:38.26 0.3 undecidable manual S 83 10.0788 135 -0.06 74
IV.ATBU.HNZ. 2021-07-11T23:34:37.31 0.1 undecidable manual P 32 15.5733 123 0.22 95
IV.ATPC.HHZ. 2021-07-11T23:34:37.05 0.1 undecidable manual P 3 13.875 126 0.24 94
IV.TB03.DHZ. 2021-07-11T23:34:37.17 0.6 undecidable manual S 330 5.8941 150 -0.23 48
IV.ATVA.EHZ. 2021-07-11T23:34:37.17 0.1 undecidable manual P 237 15.5733 123 0.08 97
IV.ATLO.EHZ. 2021-07-11T23:34:37.14 0.6 undecidable manual S 215 5.4945 151 -0.21 48
IV.ATMI.HHZ. 2021-07-11T23:34:37.11 0.6 undecidable manual P 261 14.6742 124 0.18 48
IV.TB01.DHZ.01 2021-07-11T23:34:36.72 0.3 undecidable manual S 342 2.997 163 -0.29 71
IV.ATFO.HHZ. 2021-07-11T23:34:36.43 0.1 positive manual P 83 10.0788 135 0.2 96
IV.TB02.DHZ.01 2021-07-11T23:34:36.73 0.1 undecidable manual S 298 3.3966 161 -0.33 94
IV.ATPI.EHZ. 2021-07-11T23:34:36.44 0.1 undecidable manual P 341 11.0778 132 0.06 98
IV.MURB.HHZ. 2021-07-11T23:34:36.63 0.3 undecidable manual P 149 12.0768 130 0.11 73
IV.ATVO.HNZ. 2021-07-11T23:34:36.80 0.1 undecidable manual S 312 4.3956 156 -0.37 93
IV.ATVO.HNZ. 2021-07-11T23:34:35.61 0.1 undecidable manual P 312 4.3956 156 0.04 100
IV.TB01.DHZ.01 2021-07-11T23:34:35.52 0.1 undecidable manual P 342 2.997 163 0.05 100
IV.TB03.DHZ. 2021-07-11T23:34:35.73 0.1 undecidable manual P 330 5.8941 150 0.02 100
IV.TB02.DHZ.01 2021-07-11T23:34:35.56 0.1 undecidable manual P 298 3.3966 161 0.06 100
IV.ATLO.EHZ. 2021-07-11T23:34:35.73 0.1 undecidable manual P 215 5.4945 151 0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHE. ML:0.4 0.000029899999999999995 0.56 AML other m 2021-07-11T23:34:38.42
IV.ATFO.HHN. ML:0.5 0.000041099999999999996 0.36 AML other m 2021-07-11T23:34:38.49
IV.MURB.HHN. ML:0.6 0.00004865 0.16 AML other m 2021-07-11T23:34:39.48
IV.MURB.HHE. ML:0.6 0.00004545 0.16 AML other m 2021-07-11T23:34:39.92
IV.PIEI.HHN. ML:0.2 0.00001215 0.88 AML other m 2021-07-11T23:34:41.19
IV.PIEI.HHE. ML:0.5 0.0000223 0.3 AML other m 2021-07-11T23:34:42.20
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