Earthquake with magnitude of ML 0.7 on date 30-08-2021 and time 02:33:15 (Italy) in region 4 km NE Monteleone di Spoleto (PG)

A magnitude ML 0.7 earthquake occured in region: 4 km NE Monteleone di Spoleto (PG), on

  • 30-08-2021 00:33:15 (UTC)
  • 30-08-2021 02:33:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6860, 12.9720 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.

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 4 599 599
Poggiodomo PG 4 117 716
Cascia PG 5 3217 3933
Scheggino PG 12 461 4394
Sant'Anatolia di Narco PG 12 564 4958
Vallo di Nera PG 13 364 5322
Leonessa RI 14 2435 7757
Polino TR 15 233 7990
Cerreto di Spoleto PG 16 1075 9065
Norcia PG 16 4957 14022
Ferentillo TR 16 1913 15935
Cittareale RI 17 482 16417
Montefranco TR 19 1276 17693
Spoleto PG 20 38218 55911
Arrone TR 20 2763 58674

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Terni (111501 inhabitants)
37 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
60 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
77 Km E of Viterbo (67173 inhabitants)
79 Km N of Guidonia Montecelio (88673 inhabitants)
81 Km N of Tivoli (56533 inhabitants)
97 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
Bulletin
Rev1000
ML 0.7 2021-08-30
00:33:15
42.6858 12.9717 10 2021-12-29
11:12:26
Bollettino Sismico Italiano INGV 95112971
Reviewed
Rev100
ML 0.8 2021-08-30
00:33:15
42.6817 12.9778 12 2021-08-30
00:37:30
Sala Sismica INGV-Roma 94805561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-30 00:33:15 ± 0.07
Latitude 42.6858 ± 0.0045
Longitude 12.9717 ± 0.0061
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 95112971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 485
Semi-minor axis of confidence ellipse (meter) 438
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.36063
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 94805561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-30 00:37:30

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 95112971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-06 14:10:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHN. 2021-08-30T00:33:29.04 0.6 undecidable manual S 14 40.0266 50 -0.13 47
IV.SMA1.EHZ. 2021-08-30T00:33:27.17 0.6 undecidable manual S 102 30.2475 50 0.59 43
IV.RM33.HNZ. 2021-08-30T00:33:25.74 0.6 undecidable manual S 135 27.8499 50 -0.2 48
IV.NRCA.HHZ. 2021-08-30T00:33:23.39 0.1 undecidable manual S 35 20.0688 117 -0.26 96
IV.ARRO.EHZ. 2021-08-30T00:33:23.53 0.1 undecidable manual S 235 20.5683 116 -0.26 95
IV.FDMO.HHN. 2021-08-30T00:33:23.46 0.1 undecidable manual P 14 40.0266 50 -0.08 96
IV.SMA1.EHZ. 2021-08-30T00:33:22.08 0.1 undecidable manual P 102 30.2475 50 0.04 98
IV.T1299.HNZ. 2021-08-30T00:33:21.53 0.1 undecidable manual P 103 25.9518 50 0.16 97
IV.RM33.HNZ. 2021-08-30T00:33:21.53 0.1 undecidable manual P 135 27.8499 50 -0.14 97
IV.ARRO.EHZ. 2021-08-30T00:33:20.29 0.6 positive manual P 235 20.5683 116 -0.14 49
IV.GAVE.EHZ. 2021-08-30T00:33:20.26 0.1 undecidable manual S 276 6.3936 148 0.26 98
IV.NRCA.HHZ. 2021-08-30T00:33:20.34 0.6 negative manual P 35 20.0688 117 -0.01 50
IV.LNSS.HHZ. 2021-08-30T00:33:20.86 0.1 undecidable manual S 149 10.7781 133 -0.12 100
IV.LNSS.HHZ. 2021-08-30T00:33:18.89 0.3 undecidable manual P 149 10.7781 133 0.09 75
IV.GAVE.EHZ. 2021-08-30T00:33:18.53 0.1 positive manual P 276 6.3936 148 0.29 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.1 0.0001855 0.56 AML other m 2021-08-30T00:33:20.53
IV.GAVE.EHN. ML:1.0 0.00017 0.66 AML other m 2021-08-30T00:33:20.36
IV.LNSS.HHN. ML:0.6 0.000048049999999999996 1.44 AML other m 2021-08-30T00:33:20.92
IV.LNSS.HHE. ML:0.6 0.00005065 0.94 AML other m 2021-08-30T00:33:21.09
IV.NRCA.HHE. ML:0.9 0.00005255 0.18 AML other m 2021-08-30T00:33:23.68
IV.NRCA.HHN. ML:0.6 0.00003025 1.3 AML other m 2021-08-30T00:33:23.74
IV.ARRO.EHE. ML:0.3 0.000014176665 2.28 AML other m 2021-08-30T00:33:23.29
IV.ARRO.EHN. ML:0.2 0.0000112241555 0.34 AML other m 2021-08-30T00:33:23.79
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