Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 12-08-2021 and time 06:41:07 (Italy) in region 2 km SE Monteleone di Spoleto (PG)

A magnitude ML 0.7 earthquake occured in region: 2 km SE Monteleone di Spoleto (PG), on

  • 12-08-2021 04:41:07 (UTC)
  • 12-08-2021 06:41:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6350, 12.9700 at 10 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
Monteleone di Spoleto PG 2 599 599
Leonessa RI 8 2435 3034
Poggiodomo PG 9 117 3151
Cascia PG 10 3217 6368
Polino TR 12 233 6601
Scheggino PG 14 461 7062
Ferentillo TR 15 1913 8975
Sant'Anatolia di Narco PG 16 564 9539
Cittareale RI 16 482 10021
Rivodutri RI 16 1253 11274
Posta RI 16 694 11968
Poggio Bustone RI 16 2055 14023
Morro Reatino RI 17 373 14396
Montefranco TR 17 1276 15672
Arrone TR 17 2763 18435
Vallo di Nera PG 17 364 18799
Labro RI 18 374 19173
Borbona RI 19 617 19790
Cantalice RI 19 2755 22545

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Terni (111501 inhabitants)
42 Km SE of Foligno (57155 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
60 Km W of Teramo (54892 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
73 Km N of Guidonia Montecelio (88673 inhabitants)
75 Km E of Viterbo (67173 inhabitants)
76 Km N of Tivoli (56533 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
98 Km W of Montesilvano (53738 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 0.7 2021-08-12
04:41:07		 42.6352 12.9703 10 2021-08-12
07:42:42		 Sala Sismica INGV-Roma 93996351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-12 04:41:07 ± 0.13
Latitude 42.6352 ± 0.0072
Longitude 12.9703 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93996351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 860
Semi-minor axis of confidence ellipse (meter) 571
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 200
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48743
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 93996351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-12 07:42:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.IMI.HHZ. 2021-08-12T04:42:58.39 3.0 undecidable manual Sg 3.06 0
IV.VOBA.EHZ. 2021-08-12T04:42:46.51 3.0 undecidable manual Sg 7.86 0
IV.CDRU.HHZ. 2021-08-12T04:42:43.12 3.0 undecidable manual Sg 12.45 0
IV.ZEN8.HNZ. 2021-08-12T04:42:42.94 3.0 undecidable manual Sg 6.68 0
IV.HVIT.HHZ. 2021-08-12T04:42:34.04 3.0 undecidable manual Pn -1.83 0
IX.MNT3.EHZ.02 2021-08-12T04:42:19.44 3.0 undecidable manual Sn -1.1 0
IV.OVO.HHZ. 2021-08-12T04:42:16.47 3.0 undecidable manual Sg 0.89 0
GU.PCP.HHZ. 2021-08-12T04:42:14.94 3.0 undecidable manual Pg 11.56 0
IV.PIPA.HHZ. 2021-08-12T04:42:14.37 3.0 undecidable manual Pn 0.87 0
IV.SCHR.EHZ. 2021-08-12T04:42:10.48 3.0 positive manual Pg 9.51 0
GU.RNCA.HHZ. 2021-08-12T04:42:02.41 3.0 negative manual Pn 3.07 0
IT.LRNO.HNZ. 2021-08-12T04:42:01.90 3.0 undecidable manual Sg 0.83 0
IV.CDRU.HHZ. 2021-08-12T04:41:55.63 3.0 undecidable manual Pg 2.53 0
CR.STON.BHZ. 2021-08-12T04:41:53.58 3.0 undecidable manual Pn -4.53 0
IV.TREG.EHZ. 2021-08-12T04:41:48.55 3.0 negative manual Pn -4.14 0
IV.SACR.HNZ. 2021-08-12T04:41:37.47 3.0 undecidable manual Pn -1.8 0
IV.ROM9.HNZ. 2021-08-12T04:41:28.40 3.0 negative manual P -1.38 0
IV.LAV9.HHZ. 2021-08-12T04:41:28.85 3.0 negative manual Pg -2.27 0
IV.CSP1.EHZ. 2021-08-12T04:41:25.64 0.1 undecidable manual S 21 54.1014 50 0.61 80
IV.BRSN.EHZ. 2021-08-12T04:41:25.17 3.0 negative manual Pn -8.33 0
IV.PP3.EHZ. 2021-08-12T04:41:24.36 3.0 undecidable manual S -0.45 0
IV.ASSB.HHE. 2021-08-12T04:41:24.29 0.1 undecidable manual S 331 51.8037 50 -0.12 91
IV.FDMO.HHZ. 2021-08-12T04:41:22.73 0.1 undecidable manual S 12 45.5211 50 0 94
IV.CESI.HNZ. 2021-08-12T04:41:21.90 0.1 undecidable manual S 353 41.3253 50 0.28 89
IV.MOMA.HNN. 2021-08-12T04:41:20.44 0.1 undecidable manual S 300 37.629 50 -0.18 92
IV.MC2.EHZ. 2021-08-12T04:41:20.25 0.1 undecidable manual S 30 35.4423 50 0.21 92
IV.CRTC.HHZ. 2021-08-12T04:41:19.15 3.0 undecidable manual P -3.08 0
IV.SMA1.EHZ. 2021-08-12T04:41:18.53 0.1 undecidable manual S 91 29.748 50 0 97
IV.CSP1.EHZ. 2021-08-12T04:41:17.00 0.1 undecidable manual P 21 54.1014 50 -0.74 76
IV.FDMO.HHZ. 2021-08-12T04:41:16.22 0.1 undecidable manual P 12 45.5211 50 -0.19 90
IV.ASSB.HHE. 2021-08-12T04:41:16.91 0.1 undecidable manual P 331 51.8037 50 -0.47 84
IV.NRCA.HHZ. 2021-08-12T04:41:16.81 0.3 undecidable manual S 28 24.9528 111 -0.23 70
IV.CESI.HNZ. 2021-08-12T04:41:15.68 0.1 undecidable manual P 353 41.3253 50 -0.09 93
IV.MOMA.HNN. 2021-08-12T04:41:15.85 0.1 undecidable manual P 300 37.629 50 0.66 81
IV.SMA1.EHZ. 2021-08-12T04:41:14.18 1.0 negative manual P 91 29.748 50 0.19 23
IV.MC2.EHZ. 2021-08-12T04:41:14.67 0.1 undecidable manual P 30 35.4423 50 -0.19 92
IV.NRCA.HHZ. 2021-08-12T04:41:13.15 0.1 undecidable manual P 28 24.9528 111 0.02 97
IV.ARVD.HHZ. 2021-08-12T04:41:13.74 3.0 positive manual P -3.27 0
IV.GAVE.EHZ. 2021-08-12T04:41:12.43 0.1 undecidable manual S 316 8.88 137 0.13 98
IV.LNSS.HHZ. 2021-08-12T04:41:11.81 0.1 undecidable manual S 122 6.7932 145 -0.03 100
IV.GAVE.EHZ. 2021-08-12T04:41:10.50 1.0 undecidable manual P 316 8.88 137 0.11 25
IV.LNSS.HHZ. 2021-08-12T04:41:10.32 0.1 negative manual P 122 6.7932 145 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:0.7 0.00006395000000000001 0.3 AML other m 2021-08-12T04:41:12.44
IV.GAVE.EHE. ML:0.6 0.000050799999999999995 0.16 AML other m 2021-08-12T04:41:12.51
IV.LNSS.HHN. ML:0.8 0.00009745 0.46 AML other m 2021-08-12T04:41:12.94
IV.LNSS.HHE. ML:0.6 0.00006739999999999998 0.42 AML other m 2021-08-12T04:41:13.70
IV.NRCA.HHN. ML:0.9 0.00004315 1.1 AML other m 2021-08-12T04:41:17.06
IV.NRCA.HHE. ML:1.0 0.000055849999999999996 0.48 AML other m 2021-08-12T04:41:17.46
IV.SMA1.EHE. ML:0.8 0.000027836149999999996 0.3808 AML other m 2021-08-12T04:41:19.24
IV.SMA1.EHN. ML:0.5 0.000013629628499999999 0.2592 AML other m 2021-08-12T04:41:19.05
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