Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 29-07-2021 and time 09:29:27 (UTC) in region 3 km E Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km E Monte Cavallo (MC), on

  • 29-07-2021 09:29:27 (UTC)
  • 29-07-2021 11:29:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9960, 13.0350 at 3 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 3 145 145
Pieve Torina MC 6 1458 1603
Fiordimonte MC 7 202 1805
Visso MC 8 1107 2912
Pievebovigliana MC 9 866 3778
Muccia MC 10 915 4693
Ussita MC 10 444 5137
Serravalle di Chienti MC 11 1070 6207
Fiastra MC 11 559 6766
Acquacanina MC 12 121 6887
Preci PG 13 724 7611
Sellano PG 15 1079 8690
Castelsantangelo sul Nera MC 15 281 8971
Bolognola MC 16 142 9113
Camerino MC 16 6974 16087
Sefro MC 18 422 16509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
54 Km E of Perugia (166134 inhabitants)
58 Km NE of Terni (111501 inhabitants)
66 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
99 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
Reviewed
Rev100 		ML 0.8 2021-07-29
09:29:27		 42.9955 13.0348 3 2021-07-29
09:33:43		 Sala Sismica INGV-Roma 93342391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-29 09:29:27 ± 0.08
Latitude 42.9955 ± 0.0018
Longitude 13.0348 ± 0.0025
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93342391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 229
Semi-minor axis of confidence ellipse (meter) 73
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.17177
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 93342391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-29 09:33:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUMA.HHZ. 2021-07-29T09:29:38.71 3.0 undecidable manual S 0.71 0
IV.ATCC.EHZ. 2021-07-29T09:29:37.42 3.0 undecidable manual P 1.92 0
IV.NRCA.HHZ. 2021-07-29T09:29:34.72 0.3 undecidable manual S 160 19.0698 100 0.03 73
IV.CSP1.EHZ. 2021-07-29T09:29:34.19 0.3 undecidable manual S 52 17.4714 101 0.06 73
IV.MML1.EHZ. 2021-07-29T09:29:33.16 0.3 undecidable manual S 339 14.0748 103 0.18 71
IV.CESI.HHZ. 2021-07-29T09:29:32.04 0.3 undecidable manual S 276 10.5783 107 0.22 71
IV.CSP1.EHZ. 2021-07-29T09:29:31.42 1.0 positive manual P 52 17.4714 101 -0.1 24
IV.NRCA.HHZ. 2021-07-29T09:29:31.70 0.1 negative manual P 160 19.0698 100 -0.15 95
IV.MC2.EHZ. 2021-07-29T09:29:31.37 1.0 undecidable manual P 127 15.5733 102 0.2 24
IV.CESI.HHZ. 2021-07-29T09:29:30.21 0.3 negative manual P 276 10.5783 107 0.01 74
IV.MML1.EHZ. 2021-07-29T09:29:30.64 1.0 undecidable manual P 339 14.0748 103 -0.22 24
IV.FDMO.HHZ. 2021-07-29T09:29:30.42 0.1 undecidable manual S 43 6.1938 118 0.01 100
IV.FEMA.HNE. 2021-07-29T09:29:29.91 0.1 undecidable manual S 162 3.8961 130 0.18 97
IV.FDMO.HHZ. 2021-07-29T09:29:29.26 0.1 positive manual P 43 6.1938 118 -0.12 98
IT.MTCL.HGE. 2021-07-29T09:29:29.34 0.1 undecidable manual S 266 2.8971 138 -0.14 98
IV.FEMA.HNE. 2021-07-29T09:29:29.03 0.1 undecidable manual P 162 3.8961 130 0.04 100
IT.MTCL.HGE. 2021-07-29T09:29:28.68 0.1 undecidable manual P 266 2.8971 138 -0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.8 0.00006170000000000001 0.1 AML other m 2021-07-29T09:29:36.02
IV.NRCA.HHN. ML:0.8 0.0000492 1.28 AML other m 2021-07-29T09:29:37.76
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