Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 16-10-2019 and time 21:38:40 (Italy) in region 4 km SW Apecchio (PU)

A magnitude ML 0.9 earthquake occured in region: 4 km SW Apecchio (PU), on

  • 16-10-2019 19:38:40 (UTC)
  • 16-10-2019 21:38:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5360, 12.3840 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 4 1882 1882
Pietralunga PG 11 2111 3993
Piobbico PU 12 2029 6022
Mercatello sul Metauro PU 13 1378 7400
Città di Castello PG 15 39913 47313
Sant'Angelo in Vado PU 15 4133 51446
Borgo Pace PU 15 606 52052
San Giustino PG 17 11297 63349
Urbania PU 19 7099 70448
Montone PG 20 1680 72128
Sansepolcro AR 20 15884 88012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Arezzo (99543 inhabitants)
48 Km N of Perugia (166134 inhabitants)
60 Km SW of Pesaro (94582 inhabitants)
60 Km S of Rimini (147750 inhabitants)
62 Km SW of Fano (60888 inhabitants)
68 Km S of Cesena (96758 inhabitants)
70 Km NW of Foligno (57155 inhabitants)
81 Km SE of Forlì (117913 inhabitants)
88 Km E of Siena (53903 inhabitants)
92 Km W of Ancona (100861 inhabitants)
93 Km SE of Faenza (58541 inhabitants)
94 Km E of Firenze (382808 inhabitants)
99 Km S of Ravenna (159116 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
Reviewed
Rev100 		ML 0.9 2019-10-16
19:38:40		 43.5362 12.3837 10 2019-10-16
19:46:20		 Sala Sismica INGV-Roma 73291601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-16 19:38:40 ± 0.08
Latitude 43.5362 ± 0.0036
Longitude 12.3837 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73291601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 303
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 306
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.28778
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 73291601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-16 19:46:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2019-10-16T19:38:50.08 0.6 undecidable manual S 94 27.5502 50 -0.2 48
IV.ATSC.EHZ. 2019-10-16T19:38:49.99 0.6 undecidable manual S 117 27.3504 50 -0.23 47
IV.NARO.HHZ. 2019-10-16T19:38:47.33 0.6 undecidable manual S 62 17.871 119 0.09 50
IV.TB02.DHZ.01 2019-10-16T19:38:47.26 0.3 undecidable manual S 174 18.4704 118 -0.18 73
IV.TB01.DHZ.01 2019-10-16T19:38:47.08 0.6 undecidable manual S 166 17.6712 119 -0.1 49
IV.TB03.DHZ. 2019-10-16T19:38:46.54 0.6 undecidable manual S 172 15.0738 123 0.12 49
IV.MPAG.EHZ. 2019-10-16T19:38:46.74 1.0 negative manual P 71 31.9458 50 0.07 24
IV.FRON.EHZ. 2019-10-16T19:38:45.82 0.3 positive manual P 94 27.5502 50 -0.19 72
IV.TB02.DHZ.01 2019-10-16T19:38:45.13 0.3 undecidable manual P 174 18.4704 118 0.77 61
IV.ATSC.EHZ. 2019-10-16T19:38:45.91 0.6 undecidable manual P 117 27.3504 50 -0.07 49
IV.PIEI.HHZ. 2019-10-16T19:38:45.80 0.3 undecidable manual S 90 12.1767 129 0.2 73
IV.BADI.EHZ. 2019-10-16T19:38:45.29 0.3 undecidable manual S 255 11.5773 130 -0.14 74
IV.TB01.DHZ.01 2019-10-16T19:38:44.22 0.3 undecidable manual P 166 17.6712 119 0 76
IV.ATPI.EHZ. 2019-10-16T19:38:44.65 0.6 undecidable manual S 171 9.5793 136 -0.28 48
IV.NARO.HHZ. 2019-10-16T19:38:44.30 0.1 positive manual P 62 17.871 119 0.04 100
IV.ATMC.EHZ. 2019-10-16T19:38:44.28 0.1 undecidable manual P 237 18.2706 118 -0.04 100
IV.PARC.HHZ. 2019-10-16T19:38:44.36 0.6 undecidable manual P 317 17.0718 120 0.25 48
IV.ATPC.HHZ. 2019-10-16T19:38:44.51 0.6 undecidable manual S 136 8.4804 139 -0.17 50
IV.APEC.HHZ. 2019-10-16T19:38:43.41 0.3 undecidable manual S 50 3.7962 159 -0.41 71
IV.BADI.EHZ. 2019-10-16T19:38:43.32 1.0 undecidable manual P 255 11.5773 130 0.11 25
IV.TB03.DHZ. 2019-10-16T19:38:43.85 0.1 undecidable manual P 172 15.0738 123 0.07 100
IV.PIEI.HHZ. 2019-10-16T19:38:43.41 0.3 undecidable manual P 90 12.1767 129 0.1 75
IV.ATBU.EHZ. 2019-10-16T19:38:43.97 0.1 undecidable manual P 117 14.874 123 0.23 97
IV.ATPC.HHZ. 2019-10-16T19:38:42.77 0.3 undecidable manual P 136 8.4804 139 0 77
IV.APEC.HHZ. 2019-10-16T19:38:42.20 0.3 undecidable manual P 50 3.7962 159 -0.07 76
IV.ATPI.EHZ. 2019-10-16T19:38:42.92 0.6 undecidable manual P 171 9.5793 136 0 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:0.8 0.00008465 0.76 AML other m 2019-10-16T19:38:44.71
IV.ATPI.EHN. ML:0.9 0.00010600000000000002 0.12 AML other m 2019-10-16T19:38:44.78
IV.BADI.EHN. ML:1.2 0.00019350000000000001 0.32 AML other m 2019-10-16T19:38:45.60
IV.BADI.EHE. ML:1.0 0.00011 0.14 AML other m 2019-10-16T19:38:45.67
IV.PIEI.HHE. ML:0.8 0.00008060000000000001 1.68 AML other m 2019-10-16T19:38:46.01
IV.PIEI.HHN. ML:0.6 0.000045950000000000006 1.28 AML other m 2019-10-16T19:38:46.66
IV.PARC.HHE. ML:0.9 0.0000633 0.62 AML other m 2019-10-16T19:38:48.62
IV.PARC.HHN. ML:0.8 0.0000524 0.7 AML other m 2019-10-16T19:38:49.67
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