Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 11-03-2021 and time 02:14:20 (Italy) in region 4 km SE Pietralunga (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 11-03-2021 01:14:20 (UTC)
  • 11-03-2021 02:14:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4140, 12.4710 at 9 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
Pietralunga PG 4 2111 2111
Gubbio PG 11 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Umbertide PG 17 16681 56326
Apecchio PU 17 1882 58208
Città di Castello PG 19 39913 98121
Piobbico PU 20 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
54 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
73 Km S of Rimini (147750 inhabitants)
83 Km S of Cesena (96758 inhabitants)
88 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
96 Km N of Terni (111501 inhabitants)
96 Km SE of Forlì (117913 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 1.1 2021-03-11
01:14:20		 43.4137 12.4713 9 2021-07-12
16:55:01		 Bollettino Sismico Italiano INGV 88034711
Reviewed
Rev100 		ML 1.1 2021-03-11
01:14:20		 43.412 12.4732 9 2021-03-11
01:31:00		 Sala Sismica INGV-Roma 87984641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 01:14:20 ± 0.04
Latitude 43.4137 ± 0.0018
Longitude 12.4713 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88034711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 189
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 195
Circular confidence region, given by single value of horizontal uncertainty (meter) 190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.04137
Epicentral distance of station farthest from the epicenter (degree) 0.62323
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 87984641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 01:31:00

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 88034711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-12 11:46:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHN. 2021-03-11T01:14:40.55 0.6 undecidable manual S 130 65.0904 50 0.09 44
IV.CESI.HHE. 2021-03-11T01:14:38.68 0.3 undecidable manual S 142 57.2982 50 0.28 65
IV.EL6.EHE. 2021-03-11T01:14:37.12 0.3 undecidable manual S 100 51.7038 50 0.23 66
IV.MML1.HNE. 2021-03-11T01:14:37.54 0.6 undecidable manual S 129 52.4031 50 0.46 42
IV.ARVD.HHZ. 2021-03-11T01:14:33.40 0.3 undecidable manual S 76 39.0276 50 -0.11 69
IV.CSP1.EHZ. 2021-03-11T01:14:32.38 0.6 undecidable manual P 121 69.1752 50 -0.13 43
IV.FDMO.HHN. 2021-03-11T01:14:31.88 0.1 undecidable manual P 130 65.0904 50 0.01 90
IV.ATCC.EHZ. 2021-03-11T01:14:30.84 0.3 undecidable manual S 152 28.749 107 0.26 68
IV.CESI.HHE. 2021-03-11T01:14:30.28 0.3 undecidable manual P 142 57.2982 50 -0.4 63
IV.MML1.HNE. 2021-03-11T01:14:29.80 0.3 undecidable manual P 129 52.4031 50 -0.12 67
IV.SSFR.HHZ. 2021-03-11T01:14:29.06 0.3 undecidable manual S 84 25.1526 109 -0.33 68
IV.FOSV.EHZ. 2021-03-11T01:14:29.92 0.3 undecidable manual S 119 26.8509 108 -0.02 72
IV.EL6.EHE. 2021-03-11T01:14:29.68 0.3 undecidable manual P 100 51.7038 50 -0.13 67
IV.FRON.EHZ. 2021-03-11T01:14:28.79 0.3 undecidable manual S 61 23.5542 111 -0.06 72
IV.ATMC.EHZ. 2021-03-11T01:14:28.57 0.3 undecidable manual S 279 22.755 111 -0.03 72
IV.BADI.EHZ. 2021-03-11T01:14:28.41 0.3 undecidable manual S 300 21.1677 113 0.32 68
IV.NARO.HHZ. 2021-03-11T01:14:28.59 0.3 undecidable manual S 22 23.5542 110 -0.28 69
IV.MURB.HHZ. 2021-03-11T01:14:27.12 0.3 undecidable manual S 166 17.2716 117 0.26 70
IV.ARVD.HHZ. 2021-03-11T01:14:27.62 0.3 undecidable manual P 76 39.0276 50 -0.24 67
IV.ATMI.HHZ. 2021-03-11T01:14:27.14 0.3 undecidable manual S 242 18.6702 115 -0.14 71
IV.ATSC.EHZ. 2021-03-11T01:14:27.01 0.3 undecidable manual S 86 17.3715 117 0.11 72
IV.ATVA.EHZ. 2021-03-11T01:14:27.73 0.3 undecidable manual S 225 21.1677 113 -0.38 67
IV.ATCC.EHZ. 2021-03-11T01:14:26.33 0.1 undecidable manual P 152 28.749 107 0.16 93
IV.MPAG.EHZ. 2021-03-11T01:14:26.55 0.3 undecidable manual P 44 33.3444 50 -0.43 65
IV.PIEI.HHZ. 2021-03-11T01:14:26.26 0.3 undecidable manual S 21 14.4744 121 0.24 70
IV.APEC.HHZ. 2021-03-11T01:14:26.89 0.3 undecidable manual S 346 16.5723 118 0.24 70
IV.PARC.HHE. 2021-03-11T01:14:26.64 0.6 undecidable manual P 324 32.0457 50 -0.15 46
IV.NARO.HHZ. 2021-03-11T01:14:25.05 0.1 undecidable manual P 22 23.5542 110 -0.13 94
IV.FRON.EHZ. 2021-03-11T01:14:25.00 0.1 undecidable manual P 61 23.5542 111 -0.17 94
IV.ATMC.EHZ. 2021-03-11T01:14:25.13 0.3 undecidable manual P 279 22.755 111 0.11 71
IV.ATLO.EHZ. 2021-03-11T01:14:25.40 0.3 undecidable manual S 205 12.0768 126 0.07 73
IV.SSFR.HHZ. 2021-03-11T01:14:25.36 0.1 undecidable manual P 84 25.1526 109 -0.12 94
IV.FOSV.EHZ. 2021-03-11T01:14:25.54 0.3 undecidable manual P 119 26.8509 108 -0.26 69
IV.ATFO.HHZ. 2021-03-11T01:14:24.49 0.3 undecidable manual S 123 9.5793 132 -0.17 72
IV.APEC.HHZ. 2021-03-11T01:14:24.02 0.1 undecidable manual P 346 16.5723 118 0.12 96
IV.ATVA.EHZ. 2021-03-11T01:14:24.85 0.3 undecidable manual P 225 21.1677 113 0.11 71
IV.ATBU.HNZ. 2021-03-11T01:14:24.75 0.3 undecidable manual S 42 9.2796 134 0.18 72
IV.MURB.HHZ. 2021-03-11T01:14:24.23 0.1 undecidable manual P 166 17.2716 117 0.21 94
IV.ATMI.HHZ. 2021-03-11T01:14:24.01 0.3 undecidable manual P 242 18.6702 115 -0.25 70
IV.ATSC.EHZ. 2021-03-11T01:14:24.14 0.1 undecidable manual P 86 17.3715 117 0.1 96
IV.ATPC.HNZ. 2021-03-11T01:14:24.15 0.3 undecidable manual S 351 7.4814 140 -0.01 75
IV.BADI.EHZ. 2021-03-11T01:14:24.88 0.1 undecidable manual P 300 21.1677 113 0.15 94
IV.TB03.DHZ.01 2021-03-11T01:14:23.36 0.3 undecidable manual S 254 5.0949 150 -0.31 70
IV.ATPI.EHZ. 2021-03-11T01:14:23.86 0.1 undecidable manual S 306 6.8931 142 -0.16 96
IV.TB02.DHZ.01 2021-03-11T01:14:23.92 0.3 undecidable manual S 226 6.8931 142 -0.11 73
IV.TB01.DHZ.01 2021-03-11T01:14:23.26 0.3 undecidable manual S 219 4.5954 153 -0.32 70
IV.PIEI.HHZ. 2021-03-11T01:14:23.67 0.1 undecidable manual P 21 14.4744 121 0.14 96
IV.ATLO.EHZ. 2021-03-11T01:14:23.33 0.1 undecidable manual P 205 12.0768 126 0.19 95
IV.TB01.DHZ.01 2021-03-11T01:14:22.11 0.1 undecidable manual P 219 4.5954 153 -0.02 100
IV.ATPC.HNZ. 2021-03-11T01:14:22.62 0.1 undecidable manual P 351 7.4814 140 0.16 96
IV.TB03.DHZ.01 2021-03-11T01:14:22.18 0.1 undecidable manual P 254 5.0949 150 0 100
IV.ATFO.HHZ. 2021-03-11T01:14:22.72 0.1 undecidable manual P 123 9.5793 132 -0.03 99
IV.ATPI.EHZ. 2021-03-11T01:14:22.47 0.1 undecidable manual P 306 6.8931 142 0.09 98
IV.ATBU.HNZ. 2021-03-11T01:14:22.97 0.1 undecidable manual P 42 9.2796 134 0.27 94
IV.TB02.DHZ.01 2021-03-11T01:14:22.51 0.1 undecidable manual P 226 6.8931 142 0.13 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHN. ML:1.0 0.000176 1.5 AML other m 2021-03-11T01:14:23.15
IV.ATPI.EHE. ML:1.1 0.000211 0.52 AML other m 2021-03-11T01:14:24.28
IV.ATFO.HHN. ML:1.2 0.00022449999999999998 0.44 AML other m 2021-03-11T01:14:25.29
IV.ATFO.HHE. ML:1.4 0.000309 0.28 AML other m 2021-03-11T01:14:25.16
IV.PIEI.HHN. ML:1.2 0.00014950000000000003 0.28 AML other m 2021-03-11T01:14:26.87
IV.PIEI.HHE. ML:1.3 0.000184 0.2 AML other m 2021-03-11T01:14:26.86
IV.APEC.HHN. ML:1.0 0.00010175 0.28 AML other m 2021-03-11T01:14:27.25
IV.APEC.HHE. ML:1.1 0.00010525 0.14 AML other m 2021-03-11T01:14:27.33
IV.ATCC.EHN. ML:1.1 0.00005995 0.42 AML other m 2021-03-11T01:14:27.27
IV.MURB.HHN. ML:1.3 0.0001785 0.3 AML other m 2021-03-11T01:14:27.75
IV.ATMI.HHE. ML:0.9 0.00007105 0.92 AML other m 2021-03-11T01:14:28.73
IV.BADI.EHE. ML:1.1 0.0000945 1.52 AML other m 2021-03-11T01:14:29.78
IV.BADI.EHN. ML:1.2 0.00011275 0.42 AML other m 2021-03-11T01:14:29.05
IV.MURB.HHE. ML:1.5 0.0002635 0.26 AML other m 2021-03-11T01:14:29.29
IV.FRON.EHN. ML:0.9 0.000054600000000000006 1.24 AML other m 2021-03-11T01:14:29.94
IV.FRON.EHE. ML:0.8 0.000040050000000000004 0.72 AML other m 2021-03-11T01:14:29.89
IV.SSFR.HHE. ML:1.1 0.0000786 1.36 AML other m 2021-03-11T01:14:30.11
IV.SSFR.HHN. ML:1.2 0.0000883 0.14 AML other m 2021-03-11T01:14:30.18
IV.ATCC.EHE. ML:1.2 0.00008885 1.12 AML other m 2021-03-11T01:14:31.89
IV.ATMI.HHN. ML:0.9 0.00006644999999999999 0.5 AML other m 2021-03-11T01:14:32.50
IV.ARVD.HHN. ML:0.8 0.000022 0.42 AML other m 2021-03-11T01:14:35.37
IV.ARVD.HHE. ML:0.8 0.000025799999999999997 0.42 AML other m 2021-03-11T01:14:45.49
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