Earthquake with magnitude of ML 1.2 on date 15-10-2021 and time 19:39:09 (Italy) in region 4 km SE Pietralunga (PG)

A magnitude ML 1.2 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 15-10-2021 17:39:09 (UTC)
  • 15-10-2021 19:39:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.411, 12.455 at 6 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.

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
Montone PG 12 1680 3791
Gubbio PG 12 32216 36007
Umbertide PG 15 16681 52688
Cantiano PU 16 2245 54933
Apecchio PU 17 1882 56815
Scheggia e Pascelupo PG 17 1393 58208
CittĂ  di Castello PG 18 39913 98121

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km N of Perugia (166134 inhabitants)
47 Km E of Arezzo (99543 inhabitants)
54 Km NW of Foligno (57155 inhabitants)
66 Km SW of Fano (60888 inhabitants)
67 Km SW of Pesaro (94582 inhabitants)
73 Km S of Rimini (147750 inhabitants)
83 Km S of Cesena (96758 inhabitants)
89 Km W of Ancona (100861 inhabitants)
91 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2021-10-15
17:39:09
43.4107 12.4548 6 2021-10-15
18:24:21
Sala Sismica INGV-Roma 96620871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-15 17:39:09 ± 0.1
Latitude 43.4107 ± 0.0018
Longitude 12.4548 ± 0.0050
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96620871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 299
Semi-minor axis of confidence ellipse (meter) 184
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
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) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.2626
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 96620871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-15 18:24:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2021-10-15T17:39:20.32 0.1 undecidable manual S 149 0.2626 101 0.29 91
IV.NARO.HHZ. 2021-10-15T17:39:18.16 0.3 undecidable manual S 24 0.2194 103 -0.26 69
IV.BADI.EHZ. 2021-10-15T17:39:17.45 0.1 undecidable manual S 303 0.1817 105 0.44 89
IV.MURB.HHZ. 2021-10-15T17:39:16.42 0.1 undecidable manual S 161 0.1565 108 0.37 91
IV.ATCC.EHZ. 2021-10-15T17:39:15.39 0.1 undecidable manual P 149 0.2626 101 -0.29 91
IV.PIEI.HHZ. 2021-10-15T17:39:15.62 0.1 undecidable manual S 25 0.1376 110 0.24 94
IV.ATBU.EHZ. 2021-10-15T17:39:14.31 0.3 undecidable manual S 46 0.0935 118 0.47 67
IV.ATLO.EHZ. 2021-10-15T17:39:14.18 0.3 undecidable manual S 200 0.1016 116 0.08 73
IV.NARO.HHZ. 2021-10-15T17:39:14.32 0.1 undecidable manual P 24 0.2194 103 -0.43 89
IV.ATFO.HNZ. 2021-10-15T17:39:13.77 0.1 undecidable manual S 117 0.0953 118 -0.12 97
IV.MURB.HHZ. 2021-10-15T17:39:13.33 0.1 undecidable manual P 161 0.1565 108 -0.06 97
IV.BADI.EHZ. 2021-10-15T17:39:13.89 0.1 undecidable manual P 303 0.1817 105 -0.05 97
IV.ATPC.HNZ. 2021-10-15T17:39:13.22 0.1 undecidable manual S 1 0.0701 126 0.17 96
IV.TB02.DHZ.01 2021-10-15T17:39:12.61 0.1 undecidable manual S 219 0.0522 134 0.09 98
IV.PIEI.HHZ. 2021-10-15T17:39:12.90 0.1 undecidable manual P 25 0.1376 110 -0.1 97
IV.ATPI.EHZ. 2021-10-15T17:39:12.62 0.1 undecidable manual S 316 0.0549 132 0.01 100
IV.ATBU.EHZ. 2021-10-15T17:39:12.10 0.1 undecidable manual P 46 0.0935 118 0 99
IV.ATFO.HNZ. 2021-10-15T17:39:12.12 0.3 undecidable manual P 117 0.0953 118 -0.01 74
IV.ATLO.EHZ. 2021-10-15T17:39:12.34 0.1 undecidable manual P 200 0.1016 116 0.08 98
IV.TB03.DHZ.01 2021-10-15T17:39:11.89 0.1 undecidable manual S 254 0.0333 146 -0.17 97
IV.ATPC.HNZ. 2021-10-15T17:39:11.62 0.1 undecidable manual P 1 0.0701 126 -0.03 99
IV.TB02.DHZ.01 2021-10-15T17:39:11.34 0.1 undecidable manual P 219 0.0522 134 -0.01 100
IV.TB01.DHZ.01 2021-10-15T17:39:11.87 0.1 undecidable manual S 206 0.0324 147 -0.16 97
IV.ATPI.EHZ. 2021-10-15T17:39:11.36 0.1 undecidable manual P 316 0.0549 132 -0.04 99
IV.TB03.DHZ.01 2021-10-15T17:39:10.91 0.1 undecidable manual P 254 0.0333 146 -0.17 97
IV.TB01.DHZ.01 2021-10-15T17:39:10.90 0.1 undecidable manual P 206 0.0324 147 -0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIEI.HHE. ML:0.9 8.815E-5 0.56 AML other m 2021-10-15T17:39:15.55
IV.PIEI.HHN. ML:0.8 6.735E-5 0.26 AML other m 2021-10-15T17:39:16.65
IV.MURB.HHE. ML:1.6 0.0003705 0.26 AML other m 2021-10-15T17:39:17.02
IV.MURB.HHN. ML:1.3 0.0002045 0.7 AML other m 2021-10-15T17:39:17.18
IV.ATPI.EHE. ML:0 0.0001445458 0.3712 AML other m 2021-10-15T17:39:13.64
IV.ATPI.EHN. ML:0 0.0001885037 0.1408 AML other m 2021-10-15T17:39:13.04
IV.ATPI.HNN. ML:0 0.00017527875 0.2176 AML other m 2021-10-15T17:39:14.02
IV.MURB.HNE. ML:1.6 0.00036571115 0.2816 AML other m 2021-10-15T17:39:17.15
IV.MURB.HNN. ML:1.4 0.00023370255 0.6912 AML other m 2021-10-15T17:39:17.63
IV.BADI.EHE. ML:0.8 4.798604E-5 0.1664 AML other m 2021-10-15T17:39:17.68
IV.ATCC.EHE. ML:1.1 5.815725E-5 0.2304 AML other m 2021-10-15T17:39:20.59
IV.ATCC.EHN. ML:1.1 5.824236E-5 0.1408 AML other m 2021-10-15T17:39:20.74
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