Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 04-04-2020 and time 23:37:15 (Italy) in region 5 km NW Apecchio (PU)

A magnitude ML 0.5 earthquake occured in region: 5 km NW Apecchio (PU), on

  • 04-04-2020 21:37:15 (UTC)
  • 04-04-2020 23:37:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5930, 12.3840 at 10 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
Apecchio PU 5 1882 1882
Mercatello sul Metauro PU 7 1378 3260
Sant'Angelo in Vado PU 8 4133 7393
Borgo Pace PU 10 606 7999
Piobbico PU 10 2029 10028
Belforte all'Isauro PU 14 769 10797
Urbania PU 14 7099 17896
Sestino AR 15 1355 19251
Peglio PU 15 696 19947
Piandimeleto PU 15 2167 22114
Lunano PU 16 1527 23641
Pietralunga PG 17 2111 25752
San Giustino PG 17 11297 37049
Città di Castello PG 19 39913 76962
Frontino PU 19 293 77255
Sansepolcro AR 20 15884 93139

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Arezzo (99543 inhabitants)
54 Km N of Perugia (166134 inhabitants)
54 Km S of Rimini (147750 inhabitants)
55 Km SW of Pesaro (94582 inhabitants)
58 Km W of Fano (60888 inhabitants)
62 Km S of Cesena (96758 inhabitants)
75 Km SE of Forlì (117913 inhabitants)
75 Km NW of Foligno (57155 inhabitants)
87 Km SE of Faenza (58541 inhabitants)
90 Km E of Siena (53903 inhabitants)
92 Km W of Ancona (100861 inhabitants)
93 Km E of Firenze (382808 inhabitants)
93 Km S of Ravenna (159116 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 0.5 2020-04-04
21:37:15		 43.5932 12.3837 10 2020-07-18
21:08:36		 Bollettino Sismico Italiano INGV 79132821
Reviewed
Rev100 		ML 2.0 2020-04-04
21:37:15		 43.5882 12.4043 9 2020-04-04
22:21:32		 Sala Sismica INGV-Roma 77895161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-04 21:37:15 ± 0.07
Latitude 43.5932 ± 0.0027
Longitude 12.3837 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79132821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 356
Semi-minor axis of confidence ellipse (meter) 223
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.32915
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:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 77895161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-04 22:21:32

ML:0.5

Field Value
Value 0.5
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 79132821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-14 15:03:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATLO.EHE. 2020-04-04T21:37:26.15 0.3 undecidable manual S 176 30.9468 50 0.09 72
IV.ATVO.HHZ. 2020-04-04T21:37:24.00 0.6 undecidable manual S 175 23.4543 113 -0.03 49
IV.TB01.DHZ.01 2020-04-04T21:37:23.96 0.3 undecidable manual S 170 23.8539 113 -0.18 72
IV.ATLO.EHE. 2020-04-04T21:37:21.45 0.3 undecidable manual P 176 30.9468 50 0 74
IV.ATPI.EHZ. 2020-04-04T21:37:21.74 0.1 undecidable manual S 175 15.873 123 0.05 100
IV.SSFR.HHN. 2020-04-04T21:37:21.90 0.3 undecidable manual P 118 36.5412 50 -0.41 67
IV.ATPC.HNZ. 2020-04-04T21:37:21.08 0.3 undecidable manual S 155 13.7751 126 -0.02 76
IV.NARO.HHZ. 2020-04-04T21:37:21.38 0.6 undecidable manual S 83 15.9729 123 -0.32 47
IV.PIEI.HHZ. 2020-04-04T21:37:20.75 0.6 undecidable manual S 118 13.7751 126 -0.33 47
IV.ATVO.HHZ. 2020-04-04T21:37:20.34 0.1 undecidable manual P 175 23.4543 113 0.07 98
IV.PARC.HHE. 2020-04-04T21:37:20.60 0.3 undecidable manual S 298 13.1757 128 -0.32 71
IV.TB01.DHZ.01 2020-04-04T21:37:20.27 0.3 undecidable manual P 170 23.8539 113 -0.07 74
IV.NARO.HHZ. 2020-04-04T21:37:19.08 0.1 undecidable manual P 83 15.9729 123 0.14 98
IV.ATMC.EHE. 2020-04-04T21:37:19.97 0.6 undecidable manual P 223 22.3554 114 -0.1 49
IV.APEC.HHZ. 2020-04-04T21:37:19.00 0.6 undecidable manual S 143 4.7952 155 -0.05 51
IV.ATPI.EHZ. 2020-04-04T21:37:19.09 0.1 undecidable manual P 175 15.873 123 0.17 98
IV.ATPC.HNZ. 2020-04-04T21:37:18.66 0.3 undecidable manual P 155 13.7751 126 0.07 75
IV.PARC.HHE. 2020-04-04T21:37:18.56 0.3 undecidable manual P 298 13.1757 128 0.08 75
IV.PIEI.HHZ. 2020-04-04T21:37:18.78 0.3 undecidable manual P 118 13.7751 126 0.21 73
IV.PE3.EHZ. 2020-04-04T21:37:18.88 0.1 undecidable manual P 38 14.5743 125 0.18 98
IV.APEC.HHZ. 2020-04-04T21:37:17.54 0.1 undecidable manual P 143 4.7952 155 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.HNE. ML:1.1 0.000124332685 1.4976 AML other m 2020-04-04T21:37:27.46
IV.APEC.HHN. ML:0.3 0.000035960640000000005 0.1664 AML other m 2020-04-04T21:37:19.62
IV.APEC.HNE. ML:1.8 0.0011398735 0.9728 AML other m 2020-04-04T21:37:21.68
IV.APEC.HHE. ML:0.5 0.000051656875 0.1792 AML other m 2020-04-04T21:37:19.86
IV.PIEI.HHE. ML:0.2 0.000012850623 0.128 AML other m 2020-04-04T21:37:21.05
IV.PIEI.HHN. ML:0.2 0.000017777915 2.2656 AML other m 2020-04-04T21:37:25.19
IV.NARO.HHN. ML:0.2 0.000034670015 2.4576 AML other m 2020-04-04T21:37:26.17
IV.NARO.HHE. ML:0.4 0.000030042545 2.3296 AML other m 2020-04-04T21:37:27.10
IV.ATPI.HNN. ML:1.3 0.000197180815 1.0496 AML other m 2020-04-04T21:37:23.10
IV.ATPI.EHE. ML:0.6 0.00003329118 1.3184 AML other m 2020-04-04T21:37:22.03
IV.ATPI.EHN. ML:0.4 0.000024500929999999997 0 AML other m 2020-04-04T21:37:23.11
IV.ATVO.HHN. ML:0.6 0.000023661555 1.9968 AML other m 2020-04-04T21:37:24.17
IV.ATVO.HHE. ML:0.7 0.000029203179999999997 2.7648 AML other m 2020-04-04T21:37:24.46
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
Waveforms Seismic signals in miniseed + resp format Download