Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 07-02-2021 and time 01:13:26 (Italy) in region 4 km E Sellano (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km E Sellano (PG), on

  • 07-02-2021 00:13:26 (UTC)
  • 07-02-2021 01:13:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8760, 12.9710 at 11 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.

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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
Sellano PG 4 1079 1079
Preci PG 6 724 1803
Cerreto di Spoleto PG 8 1075 2878
Visso MC 11 1107 3985
Monte Cavallo MC 13 145 4130
Norcia PG 14 4957 9087
Vallo di Nera PG 15 364 9451
Castelsantangelo sul Nera MC 15 281 9732
Ussita MC 16 444 10176
Campello sul Clitunno PG 17 2442 12618
Cascia PG 18 3217 15835
Trevi PG 18 8469 24304
Poggiodomo PG 18 117 24421
Sant'Anatolia di Narco PG 19 564 24985
Pieve Torina MC 20 1458 26443

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
99 Km N of Guidonia Montecelio (88673 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 1.4 2021-02-07
00:13:26		 42.8763 12.9712 11 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89053971
Reviewed
Rev100 		ML 1.5 2021-02-07
00:13:26		 42.8767 12.9668 12 2021-02-07
00:17:11		 Sala Sismica INGV-Roma 86894091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-07 00:13:26 ± 0.06
Latitude 42.8763 ± 0.0027
Longitude 12.9712 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89053971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 406
Semi-minor axis of confidence ellipse (meter) 320
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.10342
Epicentral distance of station farthest from the epicenter (degree) 0.27789
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 86894091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-07 00:17:11

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 89053971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-13 08:32:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LNSS.HHZ. 2021-02-07T00:13:37.59 0.1 undecidable manual S 169 30.8469 50 -0.12 95
IV.CSP1.EHZ. 2021-02-07T00:13:37.53 0.1 undecidable manual S 38 30.5472 50 -0.09 95
IV.MMO1.EHZ. 2021-02-07T00:13:37.12 0.1 undecidable manual S 85 29.0487 50 -0.1 95
IT.FOPC.HGZ. 2021-02-07T00:13:36.45 0.3 undecidable manual S 296 24.0537 50 0.54 67
IV.MML1.HNZ. 2021-02-07T00:13:36.41 0.1 undecidable manual S 0 26.2515 50 -0.09 95
IV.GAVE.EHZ. 2021-02-07T00:13:35.08 0.1 undecidable manual S 197 21.3675 50 -0.1 97
IV.FDMO.HHZ. 2021-02-07T00:13:34.62 0.1 undecidable manual S 28 20.0688 50 -0.22 94
IV.MC2.EHZ. 2021-02-07T00:13:34.71 0.1 undecidable manual S 78 18.1707 50 0.4 91
IV.MMO1.EHZ. 2021-02-07T00:13:33.12 0.1 positive manual P 85 29.0487 50 0.22 94
IV.CESI.HHZ. 2021-02-07T00:13:33.38 0.1 undecidable manual S 339 15.2736 126 -0.11 99
IV.CSP1.EHZ. 2021-02-07T00:13:33.09 0.1 negative manual P 38 30.5472 50 -0.03 96
IV.LNSS.HHZ. 2021-02-07T00:13:32.98 0.1 positive manual P 169 30.8469 50 -0.2 94
IT.FOPC.HGZ. 2021-02-07T00:13:32.20 0.3 undecidable manual P 296 24.0537 50 0.06 73
IV.NRCA.HHZ. 2021-02-07T00:13:32.54 0.1 undecidable manual S 112 12.5763 131 -0.22 98
IV.MML1.HNZ. 2021-02-07T00:13:32.46 0.1 undecidable manual P 0 26.2515 50 -0.01 97
IT.MTCL.HGZ. 2021-02-07T00:13:32.63 0.1 undecidable manual S 10 13.2756 129 -0.3 95
IV.FEMA.HNZ. 2021-02-07T00:13:32.54 0.3 undecidable manual S 34 11.4774 134 0.07 74
IV.GAVE.EHZ. 2021-02-07T00:13:31.66 0.1 positive manual P 197 21.3675 50 -0.06 98
IV.MC2.EHZ. 2021-02-07T00:13:31.87 0.1 positive manual P 78 18.1707 50 0.65 83
IV.FDMO.HHZ. 2021-02-07T00:13:31.47 0.1 undecidable manual P 28 20.0688 50 -0.05 98
IV.NRCA.HHZ. 2021-02-07T00:13:30.30 0.1 positive manual P 112 12.5763 131 -0.02 100
IT.MTCL.HGZ. 2021-02-07T00:13:30.41 0.1 undecidable manual P 10 13.2756 129 -0.01 100
IV.FEMA.HNZ. 2021-02-07T00:13:30.35 0.3 undecidable manual P 34 11.4774 134 0.2 72
IV.CESI.HHZ. 2021-02-07T00:13:30.80 0.1 negative manual P 339 15.2736 126 0.06 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.8 0.0007840000000000001 0.16 AML other m 2021-02-07T00:13:32.78
IV.NRCA.HNN. ML:1.8 0.0007444999999999999 0.14 AML other m 2021-02-07T00:13:32.79
IV.NRCA.HHE. ML:1.4 0.00026775499999999995 0.06 AML other m 2021-02-07T00:13:32.80
IV.NRCA.HNE. ML:1.4 0.00024601675 0.08 AML other m 2021-02-07T00:13:32.81
IV.CESI.HHE. ML:1.3 0.00016949999999999997 0.2 AML other m 2021-02-07T00:13:33.63
IV.CESI.HHN. ML:1.6 0.0003598985 0.28 AML other m 2021-02-07T00:13:33.62
IV.FDMO.HHE. ML:1.8 0.0004615 0.34 AML other m 2021-02-07T00:13:34.78
IV.FDMO.HHN. ML:1.4 0.00017103325000000002 0.1 AML other m 2021-02-07T00:13:34.95
IV.GAVE.EHE. ML:1.4 0.0001595 0.1 AML other m 2021-02-07T00:13:35.48
IV.LNSS.HHE. ML:1.2 0.00006543682 0.16 AML other m 2021-02-07T00:13:37.90
IV.LNSS.HHN. ML:0.9 0.000040822869999999996 0.14 AML other m 2021-02-07T00:13:38.18
IV.GAVE.EHN. ML:1.3 0.0001307362 0.36 AML other m 2021-02-07T00:13:35.17
IV.CESI.HNN. ML:1.6 0.00031860339999999996 0.26 AML other m 2021-02-07T00:13:33.49
IV.GAVE.HNE. ML:1.4 0.000169593635 0.11 AML other m 2021-02-07T00:13:35.48
IV.CSP1.EHN. ML:1.3 0.00009061087000000001 0.1 AML other m 2021-02-07T00:13:38.04
IV.CSP1.EHE. ML:1.6 0.00018937355 0.46 AML other m 2021-02-07T00:13:38.29
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