Earthquake with magnitude of ML 1.3 on date 20-04-2021 and time 15:17:55 (Italy) in region 1 km E Pietralunga (PG)

A magnitude ML 1.3 earthquake occured in region: 1 km E Pietralunga (PG), on

  • 20-04-2021 13:17:55 (UTC)
  • 20-04-2021 15:17:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4380, 12.4510 at 9 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 1 2111 2111
Montone PG 13 1680 3791
Apecchio PU 14 1882 5673
Gubbio PG 14 32216 37889
Cantiano PU 15 2245 40134
CittĂ  di Castello PG 17 39913 80047
Piobbico PU 18 2029 82076
Umbertide PG 18 16681 98757
Scheggia e Pascelupo PG 18 1393 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km N of Perugia (166134 inhabitants)
46 Km E of Arezzo (99543 inhabitants)
57 Km NW of Foligno (57155 inhabitants)
64 Km SW of Fano (60888 inhabitants)
64 Km SW of Pesaro (94582 inhabitants)
70 Km S of Rimini (147750 inhabitants)
80 Km S of Cesena (96758 inhabitants)
88 Km W of Ancona (100861 inhabitants)
91 Km E of Siena (53903 inhabitants)
93 Km SE of Forlì (117913 inhabitants)
99 Km N of Terni (111501 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 1.3 2021-04-20
13:17:55
43.4382 12.4512 9 2021-04-20
13:22:47
Sala Sismica INGV-Roma 89294811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-20 13:17:55 ± 0.11
Latitude 43.4382 ± 0.0036
Longitude 12.4512 ± 0.0062
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 89294811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 333
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 44
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29408
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 89294811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-20 13:22:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-04-20T13:18:13.17 3.0 undecidable manual P -1.19 0
IV.CSP1.EHZ. 2021-04-20T13:18:09.23 3.0 positive manual P 0.11 0
IV.MPAG.EHZ. 2021-04-20T13:18:07.48 0.3 undecidable manual S 49 32.6451 50 -0.09 72
IV.PARC.HHZ. 2021-04-20T13:18:06.94 0.3 undecidable manual S 324 28.9488 107 0.56 65
IV.FRON.EHZ. 2021-04-20T13:18:04.75 0.6 undecidable manual S 68 23.754 110 0.06 49
IV.MURB.HHZ. 2021-04-20T13:18:04.14 0.3 undecidable manual S 163 20.2686 113 0.58 65
IV.CRE.HHZ. 2021-04-20T13:18:04.57 3.0 positive manual P -0.05 0
IV.ARVD.HHZ. 2021-04-20T13:18:03.69 3.0 negative manual P -0.12 0
IV.BADI.EHZ. 2021-04-20T13:18:03.07 0.3 undecidable manual S 296 18.4704 115 0.1 74
IV.NARO.HHZ. 2021-04-20T13:18:03.91 0.3 undecidable manual S 28 21.7671 112 -0.13 73
IV.MPAG.EHZ. 2021-04-20T13:18:02.36 0.1 undecidable manual P 49 32.6451 50 -0.27 92
IV.ATCC.EHZ. 2021-04-20T13:18:02.54 3.0 negative manual P 0.14 0
IV.PE3.EHZ. 2021-04-20T13:18:02.21 0.1 undecidable manual P 7 28.8489 107 0.28 93
IV.APEC.HHZ. 2021-04-20T13:18:01.61 0.3 undecidable manual S 349 13.5753 123 0.11 74
IV.PARC.HHZ. 2021-04-20T13:18:01.84 0.1 undecidable manual P 324 28.9488 107 -0.1 96
IV.ATFO.HHZ. 2021-04-20T13:18:01.30 0.3 undecidable manual S 129 12.4764 125 0.11 74
IV.SSFR.HHZ. 2021-04-20T13:18:01.33 0.1 undecidable manual P 90 26.6511 108 -0.18 95
IV.PIEI.HHZ. 2021-04-20T13:18:01.54 0.3 undecidable manual S 32 12.7761 124 0.28 71
IV.MURB.HHZ. 2021-04-20T13:18:00.35 0.1 undecidable manual P 163 20.2686 113 0.03 99
IV.NARO.HHZ. 2021-04-20T13:18:00.49 0.1 negative manual P 28 21.7671 112 -0.11 97
IV.FRON.EHZ. 2021-04-20T13:18:00.89 0.1 positive manual P 68 23.754 110 -0.08 98
IV.BADI.EHZ. 2021-04-20T13:18:00.00 0.1 positive manual P 296 18.4704 115 0.02 100
IV.PIEI.HHZ. 2021-04-20T13:17:59.14 0.1 positive manual P 32 12.7761 124 0.15 98
IV.APEC.HHZ. 2021-04-20T13:17:59.20 0.1 undecidable manual P 349 13.5753 123 0.07 99
IV.ATFO.HHZ. 2021-04-20T13:17:58.90 0.1 undecidable manual P 129 12.4764 125 -0.05 100
IV.ATPI.EHZ. 2021-04-20T13:17:58.41 0.3 undecidable manual S 290 4.1958 154 -0.85 60
IV.ATPI.EHZ. 2021-04-20T13:17:57.52 0.1 undecidable manual P 290 4.1958 154 -0.31 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIEI.HHE. ML:1.5 0.000384 0.14 AML other m 2021-04-20T13:18:01.95
IV.APEC.HHN. ML:1.4 0.0002685 0.14 AML other m 2021-04-20T13:18:01.91
IV.PIEI.HHN. ML:1.6 0.0005164999999999999 1.86 AML other m 2021-04-20T13:18:02.94
IV.APEC.HHE. ML:1.3 0.0002265 0.14 AML other m 2021-04-20T13:18:02.19
IV.BADI.EHN. ML:1.6 0.00028849999999999997 0.36 AML other m 2021-04-20T13:18:03.37
IV.ATFO.HHE. ML:1.3 0.00021600000000000002 0.56 AML other m 2021-04-20T13:18:03.07
IV.BADI.EHE. ML:1.6 0.0003195 0.84 AML other m 2021-04-20T13:18:03.75
IV.MURB.HHN. ML:1.4 0.0001785 0.2 AML other m 2021-04-20T13:18:04.46
IV.MURB.HHE. ML:1.6 0.000266 0.34 AML other m 2021-04-20T13:18:04.51
IV.NARO.HHN. ML:1.1 0.00009445 0.28 AML other m 2021-04-20T13:18:04.74
IV.ATFO.HHN. ML:1.1 0.000154 1.22 AML other m 2021-04-20T13:18:04.20
IV.NARO.HHE. ML:1.2 0.0000979 0.62 AML other m 2021-04-20T13:18:05.26
IV.SSFR.HNE. ML:1.7 0.00027 0.62 AML other m 2021-04-20T13:18:05.46
IV.FRON.EHN. ML:1.3 0.00011300000000000001 1.56 AML other m 2021-04-20T13:18:05.83
IV.FRON.EHE. ML:1.0 0.00006555 0.54 AML other m 2021-04-20T13:18:06.36
IV.SSFR.HHE. ML:1.5 0.0001865 0.86 AML other m 2021-04-20T13:18:06.46
IV.SSFR.HHN. ML:1.5 0.00016450000000000001 0.12 AML other m 2021-04-20T13:18:07.31
IV.PARC.HHN. ML:1.2 0.00008024999999999999 0.2 AML other m 2021-04-20T13:18:07.63
IV.PARC.HHE. ML:1.2 0.0000736 0.22 AML other m 2021-04-20T13:18:07.64
IV.ATCC.EHN. ML:1.3 0.00008995 1.78 AML other m 2021-04-20T13:18:07.02
IV.MPAG.EHN. ML:0.8 0.00003145 0.5 AML other m 2021-04-20T13:18:08.53
IV.MPAG.EHE. ML:0.8 0.00003145 0.12 AML other m 2021-04-20T13:18:08.58
IV.SSFR.HNN. ML:1.7 0.000254 0.42 AML other m 2021-04-20T13:18:09.95
IV.ARVD.HHE. ML:1.1 0.000045650000000000005 1.48 AML other m 2021-04-20T13:18:09.92
IV.ATCC.EHE. ML:1.2 0.00007535 0.88 AML other m 2021-04-20T13:18:11.52
IV.ARVD.HHN. ML:0.9 0.00003035 1.12 AML other m 2021-04-20T13:18:11.96
IV.CRE.HHE. ML:0.9 0.0000236 0.88 AML other m 2021-04-20T13:18:12.45
IV.CRE.HHN. ML:1.1 0.00003705 0.7 AML other m 2021-04-20T13:18:12.45
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