Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 04-03-2021 and time 01:08:05 (UTC) in region 4 km SW Campello sul Clitunno (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km SW Campello sul Clitunno (PG), on

  • 04-03-2021 01:08:05 (UTC)
  • 04-03-2021 02:08:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7970, 12.7370 at 7 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.

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
Campello sul Clitunno PG 4 2442 2442
Castel Ritaldi PG 6 3278 5720
Spoleto PG 7 38218 43938
Trevi PG 9 8469 52407
Vallo di Nera PG 11 364 52771
Sant'Anatolia di Narco PG 11 564 53335
Scheggino PG 12 461 53796
Montefalco PG 13 5679 59475
Giano dell'Umbria PG 14 3846 63321
Cerreto di Spoleto PG 15 1075 64396
Massa Martana PG 18 3770 68166
Foligno PG 18 57155 125321
Bevagna PG 19 5081 130402
Poggiodomo PG 19 117 130519
Sellano PG 19 1079 131598
Acquasparta TR 19 4778 136376
Gualdo Cattaneo PG 19 6155 142531
Ferentillo TR 20 1913 144444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km S of Foligno (57155 inhabitants)
27 Km N of Terni (111501 inhabitants)
45 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
81 Km W of Teramo (54892 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
93 Km N of Tivoli (56533 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 1.4 2021-03-04
01:08:05		 42.7967 12.7372 7 2021-03-04
01:14:33		 Sala Sismica INGV-Roma 87691071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-04 01:08:05 ± 0.07
Latitude 42.7967 ± 0.0045
Longitude 12.7372 ± 0.0049
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87691071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 388
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 193
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.12231
Epicentral distance of station farthest from the epicenter (degree) 0.49103
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 20
Type of magnitude ML
Reference to an origin 87691071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-04 01:14:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2021-03-04T01:08:24.06 0.3 undecidable manual S 342 54.501 50 0.32 67
IV.MMO1.EHZ. 2021-03-04T01:08:22.06 0.3 undecidable manual S 76 49.3173 50 -0.28 68
IV.CSP1.EHZ. 2021-03-04T01:08:22.57 0.6 undecidable manual S 49 50.1165 50 0 48
IV.MC2.EHZ. 2021-03-04T01:08:20.20 0.3 undecidable manual S 71 38.9277 50 0.63 63
IV.ATCC.EHZ. 2021-03-04T01:08:20.77 0.3 undecidable manual S 350 43.8228 50 -0.11 71
IV.LNSS.HHZ. 2021-03-04T01:08:17.72 0.3 undecidable manual S 131 32.745 103 0.15 72
IV.MURB.HHZ. 2021-03-04T01:08:16.64 0.6 positive manual P 342 54.501 50 0.43 43
IV.NRCA.HHZ. 2021-03-04T01:08:16.92 0.6 undecidable manual S 82 30.9468 103 -0.05 49
IV.CSP1.EHZ. 2021-03-04T01:08:15.42 0.6 negative manual P 49 50.1165 50 -0.11 47
IV.CESI.HHZ. 2021-03-04T01:08:15.85 0.6 undecidable manual S 30 26.8509 105 0.28 47
IV.MMO1.EHZ. 2021-03-04T01:08:14.99 0.6 negative manual P 76 49.3173 50 -0.41 44
IV.CESX.HHZ. 2021-03-04T01:08:14.69 0.3 undecidable manual S 210 24.1536 107 -0.01 75
IV.ATCC.EHZ. 2021-03-04T01:08:14.22 1.0 undecidable manual P 350 43.8228 50 -0.34 23
IV.MC2.EHZ. 2021-03-04T01:08:13.59 0.1 undecidable manual P 71 38.9277 50 -0.21 94
IV.NRCA.HHZ. 2021-03-04T01:08:12.06 0.3 positive manual P 82 30.9468 103 -0.24 71
IV.LNSS.HHZ. 2021-03-04T01:08:12.41 0.1 undecidable manual P 131 32.745 103 -0.24 94
IV.GAVE.EHZ. 2021-03-04T01:08:12.76 0.3 undecidable manual S 132 17.2716 113 0.32 71
IV.MOMA.HHZ. 2021-03-04T01:08:11.36 0.6 undecidable manual S 273 13.5753 119 0.06 51
IV.CESI.HHZ. 2021-03-04T01:08:11.32 0.1 undecidable manual P 30 26.8509 105 -0.17 96
IV.CESX.HHZ. 2021-03-04T01:08:10.97 0.1 undecidable manual P 210 24.1536 107 -0.02 100
IV.GAVE.EHZ. 2021-03-04T01:08:09.81 0.1 undecidable manual P 132 17.2716 113 0.13 99
IV.MOMA.HHZ. 2021-03-04T01:08:08.96 0.6 negative manual P 273 13.5753 119 -0.07 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.4 0.0002615 0.18 AML other m 2021-03-04T01:08:13.15
IV.MOMA.HNN. ML:1.4 0.000298 1.12 AML other m 2021-03-04T01:08:13.15
IV.MOMA.HHE. ML:1.3 0.000229 0.6 AML other m 2021-03-04T01:08:14.32
IV.MOMA.HNE. ML:1.3 0.0002525 0.6 AML other m 2021-03-04T01:08:14.03
IV.GAVE.EHE. ML:1.5 0.000263 0.82 AML other m 2021-03-04T01:08:14.81
IV.GAVE.EHN. ML:1.4 0.00023299999999999997 0.92 AML other m 2021-03-04T01:08:14.80
IV.CESI.HHE. ML:1.1 0.00006604999999999999 1.18 AML other m 2021-03-04T01:08:16.61
IV.CESI.HHN. ML:1.4 0.0001365 0.88 AML other m 2021-03-04T01:08:16.44
IV.CESX.HHN. ML:1.4 0.00016749999999999998 1.34 AML other m 2021-03-04T01:08:16.23
IV.CESX.HHE. ML:1.5 0.0001885 1.48 AML other m 2021-03-04T01:08:17.95
IV.NRCA.HHN. ML:1.5 0.00015000000000000001 0.12 AML other m 2021-03-04T01:08:17.74
IV.LNSS.HHE. ML:1.4 0.000117 0.26 AML other m 2021-03-04T01:08:18.52
IV.NRCA.HHE. ML:1.4 0.000124 0.16 AML other m 2021-03-04T01:08:18.67
IV.LNSS.HHN. ML:1.4 0.00010695 1.22 AML other m 2021-03-04T01:08:18.29
IV.ATCC.EHN. ML:1.3 0.0000605 0.38 AML other m 2021-03-04T01:08:21.76
IV.ATCC.EHE. ML:1.2 0.000049250000000000004 1.48 AML other m 2021-03-04T01:08:21.07
IV.CSP1.EHE. ML:1.6 0.0000965 1.3 AML other m 2021-03-04T01:08:23.99
IV.CSP1.EHN. ML:1.6 0.00011704999999999999 0.34 AML other m 2021-03-04T01:08:24.51
IV.MURB.HHE. ML:1.5 0.0000805 1.08 AML other m 2021-03-04T01:08:27.37
IV.MURB.HHN. ML:1.5 0.00006939999999999999 0.26 AML other m 2021-03-04T01:08:28.39
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