Earthquake with magnitude of ML 0.2 on date 21-04-2021 and time 04:06:19 (UTC) in region 8 km SW Apecchio (PU)

A magnitude ML 0.2 earthquake occured in region: 8 km SW Apecchio (PU), on

  • 21-04-2021 04:06:19 (UTC)
  • 21-04-2021 06:06:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.507, 12.354 at 2 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
Apecchio PU 8 1882 1882
Pietralunga PG 10 2111 3993
CittĂ  di Castello PG 11 39913 43906
San Giustino PG 15 11297 55203
Piobbico PU 16 2029 57232
Mercatello sul Metauro PU 16 1378 58610
Montone PG 16 1680 60290
Monte Santa Maria Tiberina PG 17 1183 61473
Borgo Pace PU 18 606 62079
Sant'Angelo in Vado PU 18 4133 66212
Sansepolcro AR 19 15884 82096
Citerna PG 19 3531 85627
Monterchi AR 20 1757 87384

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Arezzo (99543 inhabitants)
45 Km N of Perugia (166134 inhabitants)
64 Km SW of Pesaro (94582 inhabitants)
64 Km S of Rimini (147750 inhabitants)
65 Km SW of Fano (60888 inhabitants)
68 Km NW of Foligno (57155 inhabitants)
71 Km S of Cesena (96758 inhabitants)
84 Km SE of Forlì (117913 inhabitants)
85 Km E of Siena (53903 inhabitants)
93 Km E of Firenze (382808 inhabitants)
95 Km SE of Faenza (58541 inhabitants)
95 Km W of Ancona (100861 inhabitants)
98 Km E of Scandicci (50609 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 0.2 2021-04-21
04:06:19
43.5073 12.3543 3 2021-07-12
16:55:14
Bollettino Sismico Italiano INGV 90894061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-21 04:06:19 ± 0.2
Latitude 43.5073 ± 0.0045
Longitude 12.3543 ± 0.0062
Depth (km) 3 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90894061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 0
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 221
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.16458
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 90894061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-07 11:16:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.TRI.HHZ. 2021-04-21T04:07:45.56 3.0 undecidable manual Sg 7.38 0
IV.SBPO.HNZ. 2021-04-21T04:07:22.00 3.0 undecidable manual Sg 2.41 0
IV.VENL.HNZ. 2021-04-21T04:07:19.81 3.0 undecidable manual Sn -5.48 0
IV.MNTV.EHZ. 2021-04-21T04:07:13.90 3.0 undecidable manual Sn -8.74 0
IV.SENA.HHZ. 2021-04-21T04:07:03.65 3.0 undecidable manual Pg 8.11 0
IV.VENL.HNZ. 2021-04-21T04:06:56.45 3.0 positive manual Pg 5.7 0
GU.GRAM.HHZ. 2021-04-21T04:06:47.62 3.0 undecidable manual Pg 2.54 0
IV.VAGA.HHZ. 2021-04-21T04:06:41.09 3.0 undecidable manual Pn -1.86 0
IV.PARC.HHZ. 2021-04-21T04:06:25.84 0.3 undecidable manual S 329 0.1646 98 0.31 72
IV.ATBU.EHZ. 2021-04-21T04:06:24.98 0.3 undecidable manual S 103 0.1439 99 0.21 73
IV.TB01.DHZ.01 2021-04-21T04:06:24.42 0.6 undecidable manual S 155 0.1385 99 -0.14 50
IV.PIEI.HHZ. 2021-04-21T04:06:24.59 0.6 undecidable manual S 78 0.134 100 0.21 49
IV.TB02.DHZ. 2021-04-21T04:06:24.78 0.3 undecidable manual S 164 0.1421 99 0.08 76
IV.PARC.HHZ. 2021-04-21T04:06:22.74 0.6 undecidable manual P 329 0.1646 98 -0.09 50
IV.TB01.DHZ.01 2021-04-21T04:06:22.65 0.1 undecidable manual P 155 0.1385 99 0.38 95
IV.ATPC.HHE. 2021-04-21T04:06:22.45 0.3 undecidable manual S 110 0.0791 106 0.14 76
IV.TB02.DHZ. 2021-04-21T04:06:22.84 0.1 undecidable manual P 164 0.1421 99 0.49 92
IV.NARO.HHZ. 2021-04-21T04:06:22.72 3.0 undecidable manual P -3.34 0
IV.BADI.EHZ. 2021-04-21T04:06:22.24 0.3 undecidable manual S 272 0.08 106 -0.1 76
IV.ATBU.EHZ. 2021-04-21T04:06:22.00 0.1 undecidable manual P 103 0.1439 99 -0.39 94
IV.APEC.HNN. 2021-04-21T04:06:22.39 0.6 undecidable manual S 43 0.0701 108 0.42 48
IV.PIEI.HHZ. 2021-04-21T04:06:21.73 0.6 undecidable manual P 78 0.134 100 -0.44 47
IV.ATPI.EHZ. 2021-04-21T04:06:21.80 0.6 undecidable manual S 148 0.0665 109 -0.05 51
IV.APEC.HNN. 2021-04-21T04:06:20.60 0.1 undecidable manual P 43 0.0701 108 -0.18 100
IV.ATPC.HHE. 2021-04-21T04:06:20.68 0.1 undecidable manual P 110 0.0791 106 -0.29 97
IV.ATPI.EHZ. 2021-04-21T04:06:20.38 0.1 undecidable manual P 148 0.0665 109 -0.32 97
IV.BADI.EHZ. 2021-04-21T04:06:20.82 0.6 undecidable manual P 272 0.08 106 -0.17 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:0 3.76E-5 0.06 AML other m 2021-04-21T04:06:21.84
IV.ATPI.EHN. ML:0 2.915E-5 0.06 AML other m 2021-04-21T04:06:21.91
IV.BADI.EHE. ML:0.4 3.835E-5 0.32 AML other m 2021-04-21T04:06:22.74
IV.BADI.EHN. ML:0.5 4.825E-5 1.12 AML other m 2021-04-21T04:06:23.30
IV.PIEI.HHN. ML:-0.1 9.81E-6 1.22 AML other m 2021-04-21T04:06:24.87
IV.PIEI.HHE. ML:0.1 1.65E-5 0.3 AML other m 2021-04-21T04:06:25.28
IV.NARO.HHE. ML:0.3 1.55E-5 0.42 AML other m 2021-04-21T04:06:42.46
IV.NARO.HHN. ML:0.3 1.395E-5 1.46 AML other m 2021-04-21T04:06:52.95
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