Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 26-10-2021 and time 06:52:31 (UTC) in region 6 km N Pietralunga (PG)

A magnitude ML 2.1 earthquake occured in region: 6 km N Pietralunga (PG), on

  • 26-10-2021 06:52:31 (UTC)
  • 26-10-2021 08:52:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4940, 12.4390 at 8 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 6 2111 2111
Apecchio PU 7 1882 3993
Piobbico PU 12 2029 6022
Cantiano PU 15 2245 8267
Città di Castello PG 17 39913 48180
Montone PG 17 1680 49860
Cagli PU 18 8731 58591
Mercatello sul Metauro PU 19 1378 59969
Gubbio PG 19 32216 92185
Sant'Angelo in Vado PU 19 4133 96318

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km N of Perugia (166134 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
60 Km SW of Pesaro (94582 inhabitants)
61 Km SW of Fano (60888 inhabitants)
64 Km NW of Foligno (57155 inhabitants)
64 Km S of Rimini (147750 inhabitants)
73 Km S of Cesena (96758 inhabitants)
87 Km SE of Forlì (117913 inhabitants)
88 Km W of Ancona (100861 inhabitants)
92 Km E of Siena (53903 inhabitants)
99 Km SE of Faenza (58541 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 2.1 2021-10-26
06:52:31		 43.4937 12.4392 8 2022-03-30
13:04:40		 Bollettino Sismico Italiano INGV 101610521
Reviewed
Rev100 		ML 2.1 2021-10-26
06:52:31		 43.494 12.4397 8 2021-10-26
07:05:59		 Sala Sismica INGV-Roma 96996581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 06:52:31 ± 0.04
Latitude 43.4937 ± 0.0027
Longitude 12.4392 ± 0.0025
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101610521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 267
Semi-minor axis of confidence ellipse (meter) 102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 32
Number of associated phases, regardless of their use for origin computation 66
Number of defining phases 65
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.89842
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 36
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 68
Type of magnitude ML
Reference to an origin 96996581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 07:05:59

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 64
Type of magnitude ML
Reference to an origin 101610521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-02 14:59:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TEOL.HHZ. 2021-10-26T06:53:06.28 3.0 undecidable manual Pn 1.65 0
IV.RUFI.EHZ. 2021-10-26T06:52:58.30 0.6 undecidable manual S 297 83.7495 50 0.82 34
IV.ASQU.HHZ. 2021-10-26T06:52:52.43 0.6 undecidable manual S 303 62.0934 50 0.76 37
IV.MML1.EHZ. 2021-10-26T06:52:51.89 0.6 undecidable manual S 134 60.1953 50 0.7 38
IV.MF5.EHZ. 2021-10-26T06:52:50.00 0.6 undecidable manual P 124 99.7224 50 0.84 33
IV.EL6.EHZ. 2021-10-26T06:52:50.78 0.6 undecidable manual S 109 56.3991 50 0.61 40
IV.SNTG.HHZ. 2021-10-26T06:52:48.35 0.6 undecidable manual S 123 48.3183 50 0.34 43
IV.MC2.EHZ. 2021-10-26T06:52:47.60 0.3 undecidable manual P 137 88.6446 50 0.16 63
IV.CAFI.HHZ. 2021-10-26T06:52:46.52 0.6 undecidable manual S 245 42.2244 50 0.13 46
IV.RUFI.EHZ. 2021-10-26T06:52:46.67 0.6 undecidable manual P 297 83.7495 50 -0.03 43
IV.CRE.HHZ. 2021-10-26T06:52:45.98 0.3 undecidable manual S 290 41.5251 50 -0.23 67
IV.ARVD.HHZ. 2021-10-26T06:52:45.83 0.3 undecidable manual S 89 40.4262 50 -0.07 70
IV.CSP1.EHZ. 2021-10-26T06:52:45.60 0.3 undecidable manual P 126 76.2681 50 0.07 65
IV.ATCC.EHZ. 2021-10-26T06:52:45.51 0.3 undecidable manual S 155 37.8288 50 0.29 67
IV.FDMO.HHZ. 2021-10-26T06:52:44.70 0.3 undecidable manual P 134 72.8715 50 -0.32 62
IV.MGAB.HHZ. 2021-10-26T06:52:44.40 0.3 undecidable manual P 202 69.6747 50 -0.12 65
IV.ASQU.HHZ. 2021-10-26T06:52:43.41 0.3 undecidable manual P 303 62.0934 50 0.06 67
IV.CESI.HHZ. 2021-10-26T06:52:43.68 0.3 undecidable manual P 145 65.9895 50 -0.28 64
IV.EL6.EHZ. 2021-10-26T06:52:42.25 0.1 undecidable manual P 109 56.3991 50 -0.23 87
IV.MML1.EHZ. 2021-10-26T06:52:42.68 0.1 undecidable manual P 134 60.1953 50 -0.39 84
IV.MPAG.EHZ. 2021-10-26T06:52:42.74 0.6 undecidable manual S 60 29.8479 105 0.06 48
IV.MURB.HHZ. 2021-10-26T06:52:41.92 0.6 undecidable manual S 165 26.5512 107 0.34 45
IV.SSFR.HHZ. 2021-10-26T06:52:41.64 0.6 undecidable manual S 103 28.3494 106 -0.55 42
IV.PE3.EHZ. 2021-10-26T06:52:41.10 0.6 undecidable manual S 12 22.8549 109 0.71 40
IV.SSP9.EHZ. 2021-10-26T06:52:41.50 0.6 undecidable manual S 290 26.2515 107 -0.01 48
IV.FRON.EHZ. 2021-10-26T06:52:40.27 0.6 undecidable manual S 83 23.2545 109 -0.22 46
IV.ATSC.EHE. 2021-10-26T06:52:40.06 0.6 undecidable manual S 111 21.3675 111 0.17 47
IV.PARC.HHZ. 2021-10-26T06:52:40.88 0.6 undecidable manual S 317 23.5542 109 0.28 46
IV.SNTG.HHZ. 2021-10-26T06:52:40.85 0.3 undecidable manual P 123 48.3183 50 -0.38 64
IV.CAFI.HHZ. 2021-10-26T06:52:39.92 0.1 undecidable manual P 245 42.2244 50 -0.38 87
IV.ATCC.EHZ. 2021-10-26T06:52:39.45 0.1 undecidable manual P 155 37.8288 50 -0.17 91
IV.CPGN.EHZ. 2021-10-26T06:52:39.67 0.3 undecidable manual P 344 35.4423 50 0.43 65
IV.CRE.HHZ. 2021-10-26T06:52:39.76 0.1 undecidable manual P 290 41.5251 50 -0.43 86
IV.ATLO.HNZ. 2021-10-26T06:52:39.69 0.6 undecidable manual S 187 19.9689 112 0.25 46
IV.ARVD.HHZ. 2021-10-26T06:52:39.66 0.1 undecidable manual P 89 40.4262 50 -0.35 88
IV.ATMI.HHZ. 2021-10-26T06:52:39.59 0.6 undecidable manual S 218 22.4553 110 -0.65 41
IV.NARO.HHZ. 2021-10-26T06:52:38.54 0.6 undecidable manual S 41 17.2716 115 -0.04 49
IV.ATFO.HHZ. 2021-10-26T06:52:38.72 0.6 undecidable manual S 143 17.6712 114 0.01 49
IV.BADI.EHZ. 2021-10-26T06:52:38.19 0.6 undecidable manual S 277 15.7731 117 0.08 48
IV.PE3.EHZ. 2021-10-26T06:52:37.12 0.1 undecidable manual P 12 22.8549 109 0.29 92
IV.MPAG.EHZ. 2021-10-26T06:52:37.92 0.1 undecidable manual P 60 29.8479 105 -0.24 92
IV.SSP9.EHZ. 2021-10-26T06:52:37.33 0.1 positive manual P 290 26.2515 107 -0.15 94
IV.TB03.DH1.01 2021-10-26T06:52:37.26 0.6 undecidable manual S 193 10.4784 127 0.71 41
IV.MURB.HHZ. 2021-10-26T06:52:37.60 0.1 positive manual P 165 26.5512 107 0.08 95
IV.TB01.DHE.01 2021-10-26T06:52:37.43 0.6 undecidable manual S 181 12.4764 123 0.32 46
IV.SSFR.HHZ. 2021-10-26T06:52:37.62 0.1 negative manual P 103 28.3494 106 -0.25 91
IV.ATLO.HNZ. 2021-10-26T06:52:36.32 0.1 undecidable manual P 187 19.9689 112 0.04 97
IV.ATBU.HNE. 2021-10-26T06:52:36.52 0.6 undecidable manual S 103 8.9799 132 0.37 46
IV.ATMI.HHZ. 2021-10-26T06:52:36.70 0.1 undecidable manual P 218 22.4553 110 -0.04 97
IV.FRON.EHZ. 2021-10-26T06:52:36.78 0.1 negative manual P 83 23.2545 109 -0.11 95
IV.ATSC.EHE. 2021-10-26T06:52:36.56 0.1 undecidable manual P 111 21.3675 111 0.02 97
IV.PARC.HHZ. 2021-10-26T06:52:36.83 0.1 positive manual P 317 23.5542 109 -0.12 95
IV.PIEI.HHZ. 2021-10-26T06:52:36.49 0.6 undecidable manual S 59 8.9799 132 0.34 46
IV.TB01.DHE.01 2021-10-26T06:52:35.06 0.1 undecidable manual P 181 12.4764 123 0.13 97
IV.BADI.EHZ. 2021-10-26T06:52:35.55 0.1 positive manual P 277 15.7731 117 0.04 98
IV.ATPI.EHZ. 2021-10-26T06:52:35.33 0.6 undecidable manual S 212 5.5944 145 -0.03 50
IV.NARO.HHZ. 2021-10-26T06:52:35.70 0.1 positive manual P 41 17.2716 115 -0.08 97
IV.APEC.HHZ. 2021-10-26T06:52:35.38 0.6 undecidable manual S 348 7.3815 137 -0.36 46
IV.ATFO.HHZ. 2021-10-26T06:52:35.84 0.1 negative manual P 143 17.6712 114 -0.02 98
IV.APEC.HHZ. 2021-10-26T06:52:34.11 0.1 undecidable manual P 348 7.3815 137 -0.04 99
IV.ATPC.HNE. 2021-10-26T06:52:34.26 0.6 undecidable manual S 135 1.998 166 -0.57 44
IV.PIEI.HHZ. 2021-10-26T06:52:34.54 0.1 undecidable manual P 59 8.9799 132 0.16 97
IV.ATBU.HNE. 2021-10-26T06:52:34.66 0.1 undecidable manual P 103 8.9799 132 0.28 94
IV.TB03.DH1.01 2021-10-26T06:52:34.72 0.1 undecidable manual P 193 10.4784 127 0.1 97
IV.ATPC.HNE. 2021-10-26T06:52:33.42 0.1 undecidable manual P 135 1.998 166 -0.2 97
IV.ATPI.EHZ. 2021-10-26T06:52:33.92 0.1 undecidable manual P 212 5.5944 145 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHN. ML:2.5 0.005615 0.28 AML other m 2021-10-26T06:52:35.72
IV.APEC.HNE. ML:2.5 0.005215 0.24 AML other m 2021-10-26T06:52:35.71
IV.APEC.HNN. ML:2.5 0.005755000000000001 0.14 AML other m 2021-10-26T06:52:35.79
IV.APEC.HHE. ML:2.4 0.004390000000000001 0.38 AML other m 2021-10-26T06:52:35.78
IV.PIEI.HHN. ML:2.7 0.007435 0.36 AML other m 2021-10-26T06:52:36.74
IV.PIEI.HHE. ML:2.7 0.00792 0.16 AML other m 2021-10-26T06:52:36.77
IV.NARO.HHN. ML:2.2 0.0013599999999999999 0.16 AML other m 2021-10-26T06:52:38.97
IV.NARO.HHE. ML:2.3 0.001795 0.26 AML other m 2021-10-26T06:52:38.98
IV.ATFO.HHN. ML:2.3 0.001625 0.24 AML other m 2021-10-26T06:52:39.12
IV.BADI.EHE. ML:2.2 0.00155 1.22 AML other m 2021-10-26T06:52:39.63
IV.ATFO.HHE. ML:2.1 0.0011 0.8 AML other m 2021-10-26T06:52:39.95
IV.ATMI.HHN. ML:2.1 0.0009274999999999999 0.3 AML other m 2021-10-26T06:52:40.75
IV.BADI.EHN. ML:2.4 0.002345 0.42 AML other m 2021-10-26T06:52:40.69
IV.FRON.EHN. ML:2.0 0.000716 1.12 AML other m 2021-10-26T06:52:41.57
IV.ATMI.HHE. ML:2.1 0.0009444999999999999 0.96 AML other m 2021-10-26T06:52:41.73
IV.PARC.HHE. ML:2.1 0.0009035 1.02 AML other m 2021-10-26T06:52:41.82
IV.PARC.HHN. ML:2.2 0.001048 0.2 AML other m 2021-10-26T06:52:42.07
IV.MURB.HHN. ML:2.9 0.004654999999999999 0.2 AML other m 2021-10-26T06:52:42.88
IV.MURB.HNN. ML:2.8 0.00404 0.2 AML other m 2021-10-26T06:52:42.89
IV.MURB.HNE. ML:2.8 0.0035800000000000003 0.2 AML other m 2021-10-26T06:52:43.16
IV.MURB.HHE. ML:2.9 0.0042699999999999995 0.18 AML other m 2021-10-26T06:52:43.06
IV.MPAG.EHE. ML:1.9 0.00041749999999999996 1.62 AML other m 2021-10-26T06:52:43.93
IV.SSFR.HHN. ML:2.4 0.001385 0.14 AML other m 2021-10-26T06:52:43.29
IV.SSFR.HNN. ML:2.5 0.001645 0.16 AML other m 2021-10-26T06:52:43.30
IV.SSP9.EHE. ML:2.0 0.0005645 0.4 AML other m 2021-10-26T06:52:43.34
IV.FRON.EHE. ML:1.7 0.00036199999999999996 0.6 AML other m 2021-10-26T06:52:43.66
IV.PE3.EHE. ML:2.4 0.00175 1.58 AML other m 2021-10-26T06:52:43.20
IV.SSP9.EHN. ML:1.9 0.00046950000000000003 0.5 AML other m 2021-10-26T06:52:44.25
IV.SSFR.HHE. ML:2.4 0.0012549999999999998 0.14 AML other m 2021-10-26T06:52:44.07
IV.SSFR.HNE. ML:2.4 0.0012349999999999998 0.16 AML other m 2021-10-26T06:52:44.00
IV.MPAG.EHN. ML:1.8 0.0003155 0.44 AML other m 2021-10-26T06:52:44.47
IV.PE3.EHN. ML:2.2 0.0010049999999999998 0.32 AML other m 2021-10-26T06:52:44.81
IV.ATCC.EHE. ML:2.4 0.001085 1 AML other m 2021-10-26T06:52:46.96
IV.ATCC.EHN. ML:2.5 0.0013199999999999998 1 AML other m 2021-10-26T06:52:46.47
IV.CRE.HHE. ML:2.1 0.0003815 0.24 AML other m 2021-10-26T06:52:47.15
IV.CRE.HHN. ML:2.2 0.000526 0.2 AML other m 2021-10-26T06:52:47.22
IV.ARVD.HHE. ML:1.8 0.0002195 0.16 AML other m 2021-10-26T06:52:47.58
IV.CAFI.HHN. ML:1.7 0.0001605 0.6 AML other m 2021-10-26T06:52:47.26
IV.CAFI.HNN. ML:1.6 0.00014649999999999998 0.62 AML other m 2021-10-26T06:52:47.26
IV.ARVD.HHN. ML:1.8 0.000228 0.34 AML other m 2021-10-26T06:52:47.63
IV.CAFI.HHE. ML:1.6 0.000131 0.42 AML other m 2021-10-26T06:52:48.54
IV.CAFI.HNE. ML:1.6 0.000131 0.58 AML other m 2021-10-26T06:52:48.40
IV.SNTG.HHN. ML:2.0 0.000251 0.26 AML other m 2021-10-26T06:52:48.51
IV.SNTG.HHE. ML:1.8 0.000169 0.22 AML other m 2021-10-26T06:52:48.69
IV.EL6.EHN. ML:2.1 0.000258 0.36 AML other m 2021-10-26T06:52:52.28
IV.MML1.EHN. ML:2.0 0.0002 0.24 AML other m 2021-10-26T06:52:52.67
IV.ASQU.HHE. ML:1.7 0.00009065000000000001 0.32 AML other m 2021-10-26T06:52:52.63
IV.ASQU.HHN. ML:1.8 0.00011199999999999998 1.64 AML other m 2021-10-26T06:52:53.15
IV.CPGN.EHE. ML:1.6 0.00017299999999999998 1.18 AML other m 2021-10-26T06:52:53.87
IV.CPGN.EHN. ML:1.7 0.0001985 0.36 AML other m 2021-10-26T06:52:53.42
IV.MML1.EHE. ML:1.8 0.0001395 0.42 AML other m 2021-10-26T06:52:54.25
IV.CESI.HHN. ML:1.8 0.00011025 1.22 AML other m 2021-10-26T06:52:55.04
IV.MGAB.HNN. ML:2.3 0.0003175 0.24 AML other m 2021-10-26T06:52:55.85
IV.EL6.EHE. ML:2.0 0.0002375 0.6 AML other m 2021-10-26T06:52:56.34
IV.FDMO.HHE. ML:1.8 0.00009185 0.22 AML other m 2021-10-26T06:52:56.45
IV.FDMO.HHN. ML:1.9 0.000132 0.18 AML other m 2021-10-26T06:52:56.47
IV.CSP1.EHE. ML:2.4 0.0003555 0.24 AML other m 2021-10-26T06:52:57.88
IV.MGAB.HHE. ML:2.2 0.0002965 1.3 AML other m 2021-10-26T06:52:57.23
IV.MGAB.HNE. ML:2.2 0.00028700000000000004 1.32 AML other m 2021-10-26T06:52:57.23
IV.CESI.HHE. ML:1.8 0.00010885 0.36 AML other m 2021-10-26T06:52:57.93
IV.CSP1.EHN. ML:2.4 0.00033650000000000005 0.22 AML other m 2021-10-26T06:52:57.85
IV.MGAB.HHN. ML:2.3 0.00033350000000000003 0.74 AML other m 2021-10-26T06:52:58.21
IV.RUFI.EHE. ML:1.7 0.00006235 0.42 AML other m 2021-10-26T06:53:00.36
IV.RUFI.EHN. ML:1.9 0.00009834999999999999 0.36 AML other m 2021-10-26T06:53:00.71
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