Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 04-02-2021 and time 21:43:15 (Italy) in region 6 km W Gubbio (PG)

A magnitude ML 1.5 earthquake occured in region: 6 km W Gubbio (PG), on

  • 04-02-2021 20:43:15 (UTC)
  • 04-02-2021 21:43:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3710, 12.5090 at 8 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
Gubbio PG 6 32216 32216
Pietralunga PG 10 2111 34327
Scheggia e Pascelupo PG 14 1393 35720
Montone PG 15 1680 37400
Cantiano PU 15 2245 39645
Umbertide PG 16 16681 56326
Costacciaro PG 17 1216 57542
Sigillo PG 19 2404 59946

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Perugia (166134 inhabitants)
49 Km NW of Foligno (57155 inhabitants)
52 Km E of Arezzo (99543 inhabitants)
67 Km SW of Fano (60888 inhabitants)
68 Km SW of Pesaro (94582 inhabitants)
77 Km S of Rimini (147750 inhabitants)
86 Km W of Ancona (100861 inhabitants)
88 Km S of Cesena (96758 inhabitants)
91 Km N of Terni (111501 inhabitants)
95 Km E of Siena (53903 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 1.5 2021-02-04
20:43:15		 43.3708 12.5088 8 2021-07-12
16:55:00		 Bollettino Sismico Italiano INGV 87720221
Reviewed
Rev100 		ML 1.5 2021-02-04
20:43:15		 43.3717 12.5132 9 2021-02-04
20:56:31		 Sala Sismica INGV-Roma 86836881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-04 20:43:15 ± 0.04
Latitude 43.3708 ± 0.0027
Longitude 12.5088 ± 0.0025
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87720221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 257
Semi-minor axis of confidence ellipse (meter) 211
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) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 38
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.57826
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 87720221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-04 14:57:42

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 86836881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-04 20:56:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-02-04T20:43:36.67 0.1 undecidable manual S 119 64.1913 50 0.86 71
IV.FDMO.HHZ. 2021-02-04T20:43:35.11 0.1 undecidable manual S 128 59.6958 50 0.5 82
IV.MGAB.HHZ. 2021-02-04T20:43:35.14 0.1 undecidable manual S 212 60.0954 50 0.41 84
IV.EL6.EHZ. 2021-02-04T20:43:31.75 0.1 undecidable manual S 95 48.0186 50 0.25 89
IV.CAFI.HHZ. 2021-02-04T20:43:30.56 0.1 undecidable manual S 264 44.0226 50 0.14 91
IV.ARVD.HHZ. 2021-02-04T20:43:28.47 0.1 undecidable manual S 68 37.629 50 -0.25 90
IV.ASSB.HHZ. 2021-02-04T20:43:28.44 0.1 undecidable manual S 162 38.3283 50 -0.49 86
IV.MPAG.EHZ. 2021-02-04T20:43:27.76 0.1 undecidable manual S 35 35.0427 50 -0.27 90
IV.CSP1.EHZ. 2021-02-04T20:43:27.20 0.1 positive manual P 119 64.1913 50 -0.08 89
IV.FDMO.HHZ. 2021-02-04T20:43:26.27 0.1 negative manual P 128 59.6958 50 -0.31 86
IV.MGAB.HHZ. 2021-02-04T20:43:26.64 0.1 undecidable manual P 212 60.0954 50 -0.01 91
IV.BADI.EHZ. 2021-02-04T20:43:25.44 0.1 undecidable manual S 306 26.2515 108 0.25 92
IV.ATMC.EHZ. 2021-02-04T20:43:25.28 0.1 undecidable manual S 288 26.8509 107 -0.09 95
IV.FRON.EHZ. 2021-02-04T20:43:24.19 0.1 undecidable manual S 47 23.8539 109 -0.21 93
IV.ATCC.EHZ. 2021-02-04T20:43:24.61 0.1 undecidable manual S 153 23.1546 110 0.44 89
IV.CAFI.HHZ. 2021-02-04T20:43:24.19 0.1 negative manual P 264 44.0226 50 0.02 94
IV.APEC.HNZ. 2021-02-04T20:43:24.20 0.1 undecidable manual S 341 21.9669 111 0.42 90
IV.EL6.EHZ. 2021-02-04T20:43:24.78 0.1 positive manual P 95 48.0186 50 -0.01 93
IV.SSFR.HHZ. 2021-02-04T20:43:24.01 0.1 undecidable manual S 72 23.1546 110 -0.17 94
IV.FOSV.EHZ. 2021-02-04T20:43:23.70 0.1 undecidable manual S 112 22.0668 111 -0.1 96
IV.ASSB.HHZ. 2021-02-04T20:43:23.21 0.1 undecidable manual P 162 38.3283 50 -0.09 93
IV.ATMI.HHZ. 2021-02-04T20:43:23.37 0.3 undecidable manual S 258 19.869 113 0.28 69
IV.ARVD.HHZ. 2021-02-04T20:43:22.79 0.1 positive manual P 68 37.629 50 -0.39 88
IV.ATVA.EHZ. 2021-02-04T20:43:22.55 0.1 undecidable manual S 240 20.7681 112 -0.83 77
IV.MPAG.EHZ. 2021-02-04T20:43:22.37 0.1 positive manual P 35 35.0427 50 -0.42 88
IV.PIEI.HHZ. 2021-02-04T20:43:22.85 0.1 undecidable manual S 7 18.3705 114 0.22 94
IV.ATMC.EHZ. 2021-02-04T20:43:21.09 0.1 undecidable manual P 288 26.8509 107 -0.15 94
IT.UMBT.HGZ. 2021-02-04T20:43:21.26 0.3 undecidable manual S 241 15.2736 119 -0.39 68
IV.ATPC.HHZ. 2021-02-04T20:43:21.49 0.1 undecidable manual S 341 12.876 123 0.55 88
IV.BADI.EHZ. 2021-02-04T20:43:21.13 0.1 undecidable manual P 306 26.2515 108 -0.01 97
IV.ATSC.EHZ. 2021-02-04T20:43:21.79 0.1 undecidable manual S 68 15.4734 118 0.06 98
IV.APEC.HNZ. 2021-02-04T20:43:20.42 0.1 negative manual P 341 21.9669 111 0.09 96
IV.MURB.HHZ. 2021-02-04T20:43:20.90 0.1 undecidable manual S 174 12.0768 125 0.2 96
IV.SSFR.HHZ. 2021-02-04T20:43:20.33 0.1 positive manual P 72 23.1546 110 -0.23 93
IV.ATMI.HHZ. 2021-02-04T20:43:20.21 0.3 undecidable manual P 258 19.869 113 0.28 69
IV.FRON.EHZ. 2021-02-04T20:43:20.46 0.1 positive manual P 47 23.8539 109 -0.23 93
IV.FOSV.EHZ. 2021-02-04T20:43:20.31 0.1 undecidable manual P 112 22.0668 111 -0.03 97
IV.ATCC.EHZ. 2021-02-04T20:43:20.67 0.1 undecidable manual P 153 23.1546 110 0.12 95
IV.ATVA.EHZ. 2021-02-04T20:43:20.22 0.1 negative manual P 240 20.7681 112 0.12 96
IV.ATLO.EHZ. 2021-02-04T20:43:20.33 0.1 undecidable manual S 233 10.2786 129 0.12 97
IV.ATSC.EHZ. 2021-02-04T20:43:19.16 0.1 positive manual P 68 15.4734 118 0.01 99
IV.PIEI.HHZ. 2021-02-04T20:43:19.69 0.1 positive manual P 7 18.3705 114 0.02 98
IV.TB02.DHZ.01 2021-02-04T20:43:19.53 0.1 undecidable manual S 270 7.9809 136 -0.1 98
IV.TB03.DHZ.01 2021-02-04T20:43:19.76 0.1 undecidable manual S 293 8.5803 134 -0.03 99
IV.TB03.DHZ.01 2021-02-04T20:43:18.02 0.1 undecidable manual P 293 8.5803 134 0 100
IV.TB01.DHZ.01 2021-02-04T20:43:18.89 0.1 undecidable manual S 281 5.994 144 -0.3 94
IV.ATLO.EHZ. 2021-02-04T20:43:18.38 0.1 positive manual P 233 10.2786 129 0.11 97
IV.MURB.HHZ. 2021-02-04T20:43:18.66 0.1 positive manual P 174 12.0768 125 0.1 97
IT.UMBT.HGZ. 2021-02-04T20:43:18.22 0.3 undecidable manual P 241 15.2736 119 -0.88 57
IV.ATPC.HHZ. 2021-02-04T20:43:18.96 0.1 undecidable manual P 341 12.876 123 0.27 94
IV.TB01.DHZ.01 2021-02-04T20:43:17.64 0.1 positive manual P 281 5.994 144 -0.04 100
IV.TB02.DHZ.01 2021-02-04T20:43:17.97 0.1 positive manual P 270 7.9809 136 0.03 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHE. ML:1.8 0.0007830000000000001 0.32 AML other m 2021-02-04T20:43:21.19
IV.MURB.HNE. ML:1.8 0.00071286585 0.3456 AML other m 2021-02-04T20:43:21.18
IV.MURB.HHN. ML:1.6 0.0004957964 0.2048 AML other m 2021-02-04T20:43:21.29
IV.MURB.HNN. ML:1.6 0.00046194595 0.2304 AML other m 2021-02-04T20:43:21.29
IV.PIEI.HHN. ML:1.4 0.000202 0.22 AML other m 2021-02-04T20:43:23.54
IV.PIEI.HHE. ML:1.5 0.0002645 0.24 AML other m 2021-02-04T20:43:23.66
IV.SSFR.HHN. ML:1.7 0.00034446275 0.192 AML other m 2021-02-04T20:43:24.26
IV.SSFR.HNE. ML:1.8 0.0004667212 0.1792 AML other m 2021-02-04T20:43:24.72
IV.SSFR.HHE. ML:1.8 0.00044375524999999997 0.1792 AML other m 2021-02-04T20:43:24.70
IV.ATCC.EHE. ML:1.4 0.00018538622500000003 0.1024 AML other m 2021-02-04T20:43:24.99
IV.ATCC.EHN. ML:1.4 0.0001718345 0.1152 AML other m 2021-02-04T20:43:24.89
IV.BADI.EHN. ML:1.5 0.0001685 0.18 AML other m 2021-02-04T20:43:25.68
IV.SSFR.HNN. ML:1.8 0.00042635555000000003 0.2048 AML other m 2021-02-04T20:43:24.27
IV.BADI.EHE. ML:1.5 0.0001815 0.58 AML other m 2021-02-04T20:43:26.67
IV.ATMI.HHN. ML:1.0 0.00008294826 0.3456 AML other m 2021-02-04T20:43:23.75
IV.ASSB.HHN. ML:1.3 0.00007539999999999999 1.56 AML other m 2021-02-04T20:43:28.85
IV.ASSB.HHE. ML:1.3 0.00007549999999999999 1.44 AML other m 2021-02-04T20:43:29.05
IV.ARVD.HHE. ML:0.9 0.000029921785 0.4224 AML other m 2021-02-04T20:43:28.90
IV.ATMI.HHE. ML:1.0 0.00008088171 0.384 AML other m 2021-02-04T20:43:23.77
IV.FDMO.HHN. ML:1.1 0.000027500000000000004 0.44 AML other m 2021-02-04T20:43:35.73
IV.FDMO.HHE. ML:1.0 0.00002249929 0.2048 AML other m 2021-02-04T20:43:35.28
IV.MGAB.HHN. ML:1.1 0.000026992815 0.3968 AML other m 2021-02-04T20:43:35.86
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