Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 30-09-2021 and time 19:35:05 (Italy) in region 4 km SE Pietralunga (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 30-09-2021 17:35:05 (UTC)
  • 30-09-2021 19:35:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4170, 12.4720 at 9 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
Pietralunga PG 4 2111 2111
Gubbio PG 11 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Apecchio PU 16 1882 41527
Umbertide PG 17 16681 58208
Città di Castello PG 19 39913 98121
Piobbico PU 20 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
55 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
82 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2021-09-30
17:35:05		 43.4167 12.4717 9 2022-03-30
13:04:12		 Bollettino Sismico Italiano INGV 96727631
Reviewed
Rev100 		ML 1.4 2021-09-30
17:35:05		 43.4222 12.4768 9 2021-09-30
17:44:25		 Sala Sismica INGV-Roma 96075521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-30 17:35:05 ± 0.03
Latitude 43.4167 ± 0.0018
Longitude 12.4717 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96727631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 152
Semi-minor axis of confidence ellipse (meter) 65
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 121
Circular confidence region, given by single value of horizontal uncertainty (meter) 160.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
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) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.58726
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 96727631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-18 13:31:14

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 96075521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-30 17:44:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-09-30T17:35:22.34 0.3 undecidable manual S 101 51.7038 50 0.02 69
IV.CRE.HHZ. 2021-09-30T17:35:21.45 0.3 undecidable manual S 298 47.4192 50 0.26 66
IV.ASSB.HHZ. 2021-09-30T17:35:20.26 0.3 undecidable manual S 160 44.1225 50 -0.04 70
IV.CAFI.HHZ. 2021-09-30T17:35:19.46 0.3 undecidable manual S 257 41.9247 50 -0.24 67
IV.FDMO.HHZ. 2021-09-30T17:35:17.18 0.1 undecidable manual P 130 65.1903 50 -0.12 88
IV.PARC.HHZ. 2021-09-30T17:35:17.10 0.3 undecidable manual S 324 31.8459 105 0.16 70
IV.PE3.EHZ. 2021-09-30T17:35:16.97 0.3 undecidable manual S 4 31.0467 105 0.29 68
IV.ATCC.EHZ. 2021-09-30T17:35:16.36 0.3 undecidable manual S 152 29.0487 106 0.34 67
IV.EL6.EHZ. 2021-09-30T17:35:15.02 0.3 undecidable manual P 101 51.7038 50 -0.19 67
IV.ASSB.HHZ. 2021-09-30T17:35:14.04 0.3 undecidable manual P 160 44.1225 50 -0.01 70
IV.CRE.HHZ. 2021-09-30T17:35:14.67 0.3 undecidable manual P 298 47.4192 50 0.12 68
IV.SSFR.HHZ. 2021-09-30T17:35:14.56 0.3 undecidable manual S 85 25.1526 109 -0.16 71
IV.ATVA.EHZ. 2021-09-30T17:35:13.27 0.3 undecidable manual S 225 21.4674 112 -0.26 69
IV.NARO.HHZ. 2021-09-30T17:35:13.75 0.6 undecidable manual S 22 23.2545 110 -0.35 45
IV.ATMC.EHZ. 2021-09-30T17:35:13.95 0.3 undecidable manual S 279 22.755 111 0.02 73
IV.FRON.EHZ. 2021-09-30T17:35:13.93 0.3 undecidable manual S 61 23.3544 110 -0.2 70
IV.CAFI.HHZ. 2021-09-30T17:35:13.52 0.3 undecidable manual P 257 41.9247 50 -0.18 68
IV.ATMI.HHZ. 2021-09-30T17:35:12.86 0.3 undecidable manual S 241 18.7701 115 0.18 71
IV.ATSC.EHZ. 2021-09-30T17:35:12.26 0.6 undecidable manual S 87 17.2716 116 0.05 49
IV.APEC.HHZ. 2021-09-30T17:35:12.10 0.1 undecidable manual S 345 16.2726 118 0.22 71
IV.MURB.HHZ. 2021-09-30T17:35:12.61 0.3 undecidable manual S 166 17.5713 116 0.32 69
IV.ATCC.EHZ. 2021-09-30T17:35:11.72 0.1 positive manual P 152 29.0487 106 0.14 94
IV.PIEI.HHZ. 2021-09-30T17:35:11.36 0.3 undecidable manual S 21 14.1747 121 0.11 72
IV.PARC.HHZ. 2021-09-30T17:35:11.98 0.3 undecidable manual P 324 31.8459 105 -0.13 70
IV.PE3.EHZ. 2021-09-30T17:35:11.88 0.3 undecidable manual P 4 31.0467 105 -0.08 71
IV.ATLO.EHZ. 2021-09-30T17:35:10.85 0.3 undecidable manual S 205 12.3765 125 0.11 73
IV.ATBU.EHZ. 2021-09-30T17:35:10.06 0.1 undecidable manual S 43 8.9799 134 0.24 95
IV.FOSV.EHZ. 2021-09-30T17:35:10.84 0.3 undecidable manual P 120 26.9508 108 -0.34 68
IV.ATVA.EHZ. 2021-09-30T17:35:10.18 0.1 undecidable manual P 225 21.4674 112 0.04 97
IV.NARO.HHZ. 2021-09-30T17:35:10.22 0.1 undecidable manual P 22 23.2545 110 -0.25 92
IV.ATMC.EHZ. 2021-09-30T17:35:10.40 0.3 undecidable manual P 279 22.755 111 0.03 73
IV.SSFR.HHZ. 2021-09-30T17:35:10.60 0.3 undecidable manual P 85 25.1526 109 -0.22 70
IV.FRON.EHZ. 2021-09-30T17:35:10.34 0.1 positive manual P 61 23.3544 110 -0.14 95
IV.ATFO.HHZ. 2021-09-30T17:35:09.95 0.3 undecidable manual S 125 9.7791 131 -0.07 74
IV.MURB.HHZ. 2021-09-30T17:35:09.65 0.1 undecidable manual P 166 17.5713 116 0.22 94
IV.ATMI.HHZ. 2021-09-30T17:35:09.63 0.3 undecidable manual P 241 18.7701 115 -0.02 73
IV.TB02.DHZ. 2021-09-30T17:35:09.28 0.1 undecidable manual S 224 7.1928 140 -0.11 98
IV.ATPC.HNZ. 2021-09-30T17:35:09.31 0.3 undecidable manual S 351 7.1928 140 -0.08 74
IV.ATSC.EHZ. 2021-09-30T17:35:09.44 0.1 undecidable manual P 87 17.2716 116 0.06 97
IV.ATPI.EHZ. 2021-09-30T17:35:09.04 0.1 undecidable manual S 304 6.7932 142 -0.25 95
IV.APEC.HHZ. 2021-09-30T17:35:09.27 0.3 undecidable manual P 345 16.2726 118 0.08 73
IV.ATFO.HHZ. 2021-09-30T17:35:08.12 0.3 undecidable manual P 125 9.7791 131 0.01 75
IV.ATLO.EHZ. 2021-09-30T17:35:08.69 0.1 undecidable manual P 205 12.3765 125 0.17 96
IV.ATBU.EHZ. 2021-09-30T17:35:08.23 0.1 undecidable manual P 43 8.9799 134 0.24 95
IV.PIEI.HHZ. 2021-09-30T17:35:08.93 0.1 undecidable manual P 21 14.1747 121 0.11 97
IV.TB03.DHZ.01 2021-09-30T17:35:08.68 0.3 undecidable manual S 251 5.1948 149 -0.31 71
IV.TB01.DHZ. 2021-09-30T17:35:08.64 0.3 undecidable manual S 217 4.8951 150 -0.29 71
IV.ATPI.EHZ. 2021-09-30T17:35:07.70 0.1 undecidable manual P 304 6.7932 142 0.01 100
IV.TB03.DHZ.01 2021-09-30T17:35:07.49 0.1 undecidable manual P 251 5.1948 149 -0.03 100
IV.TB01.DHZ. 2021-09-30T17:35:07.44 0.1 undecidable manual P 217 4.8951 150 -0.04 100
IV.TB02.DHZ. 2021-09-30T17:35:07.83 0.1 undecidable manual P 224 7.1928 140 0.08 98
IV.ATPC.HNZ. 2021-09-30T17:35:07.85 0.1 undecidable manual P 351 7.1928 140 0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:1.5 0.0005415 0.46 AML other m 2021-09-30T17:35:09.18
IV.ATPI.EHN. ML:1.4 0.000398 1.16 AML other m 2021-09-30T17:35:09.81
IV.ATFO.HHN. ML:1.5 0.00043500000000000006 0.48 AML other m 2021-09-30T17:35:10.70
IV.ATFO.HHE. ML:1.6 0.000507 0.16 AML other m 2021-09-30T17:35:10.69
IV.PIEI.HHE. ML:1.6 0.00046899999999999996 0.28 AML other m 2021-09-30T17:35:12.12
IV.APEC.HHN. ML:1.6 0.00038349999999999994 0.1 AML other m 2021-09-30T17:35:12.37
IV.PIEI.HHN. ML:1.5 0.00034100000000000005 0.12 AML other m 2021-09-30T17:35:12.27
IV.APEC.HHE. ML:1.6 0.00040500000000000003 0.16 AML other m 2021-09-30T17:35:12.55
IV.ATMI.HHE. ML:1.2 0.0001305 0.78 AML other m 2021-09-30T17:35:13.83
IV.NARO.HHN. ML:1.1 0.0000892 0.54 AML other m 2021-09-30T17:35:13.56
IV.ATMI.HHN. ML:1.2 0.0001455 1.52 AML other m 2021-09-30T17:35:13.14
IV.FRON.EHE. ML:1.1 0.0000916 0.14 AML other m 2021-09-30T17:35:14.21
IV.MURB.HHN. ML:1.8 0.000592 0.18 AML other m 2021-09-30T17:35:14.19
IV.MURB.HHE. ML:1.8 0.000564 0.3 AML other m 2021-09-30T17:35:14.55
IV.FRON.EHN. ML:1.4 0.000148 0.6 AML other m 2021-09-30T17:35:14.38
IV.NARO.HHE. ML:1.0 0.00007065 0.52 AML other m 2021-09-30T17:35:14.51
IV.SSFR.HNE. ML:1.6 0.00023649999999999998 0.54 AML other m 2021-09-30T17:35:15.22
IV.SSFR.HHN. ML:1.6 0.00022250000000000001 1.8 AML other m 2021-09-30T17:35:15.01
IV.SSFR.HHE. ML:1.5 0.000184 1.74 AML other m 2021-09-30T17:35:16.88
IV.SSFR.HNN. ML:1.7 0.00027600000000000004 1.4 AML other m 2021-09-30T17:35:16.80
IV.ATCC.EHN. ML:1.5 0.000163 1.32 AML other m 2021-09-30T17:35:17.88
IV.ATCC.EHE. ML:1.6 0.0002045 0.88 AML other m 2021-09-30T17:35:17.71
IV.PARC.HHN. ML:1.2 0.0000718 0.56 AML other m 2021-09-30T17:35:17.10
IV.CAFI.HHE. ML:1.0 0.000030050000000000002 0.42 AML other m 2021-09-30T17:35:21.09
IV.CAFI.HHN. ML:1.0 0.00003125 1.54 AML other m 2021-09-30T17:35:21.17
IV.PARC.HHE. ML:1.1 0.00005525 0.42 AML other m 2021-09-30T17:35:25.43
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