Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 22-10-2020 and time 00:43:26 (Italy) in region 5 km SW Preci (PG)

A magnitude ML 1.3 earthquake occured in region: 5 km SW Preci (PG), on

  • 21-10-2020 22:43:26 (UTC)
  • 22-10-2020 00:43:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8420, 13.0180 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
Preci PG 5 724 724
Norcia PG 8 4957 5681
Cerreto di Spoleto PG 9 1075 6756
Sellano PG 9 1079 7835
Visso MC 12 1107 8942
Castelsantangelo sul Nera MC 13 281 9223
Cascia PG 14 3217 12440
Vallo di Nera PG 15 364 12804
Ussita MC 15 444 13248
Poggiodomo PG 16 117 13365
Monte Cavallo MC 17 145 13510
Sant'Anatolia di Narco PG 19 564 14074
Campello sul Clitunno PG 20 2442 16516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
59 Km SE of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
99 Km N of Tivoli (56533 inhabitants)
99 Km W of Montesilvano (53738 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 2020-10-21
22:43:26		 42.8415 13.0177 10 2020-10-21
22:53:10		 Sala Sismica INGV-Roma 84004931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-21 22:43:26 ± 0.05
Latitude 42.8415 ± 0.0027
Longitude 13.0177 ± 0.0049
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 84004931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 432
Semi-minor axis of confidence ellipse (meter) 244
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 296
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 44
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.65830
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 84004931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-21 22:53:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMUR.HNZ. 2020-10-21T22:43:45.38 0.6 undecidable manual S -2.52 0
IV.CESX.HHZ. 2020-10-21T22:43:41.08 0.6 undecidable manual S 234 43.623 50 0.44 58
IV.ARVD.HHZ. 2020-10-21T22:43:39.29 0.3 undecidable manual P 355 73.0713 50 0.17 88
IV.CSP1.EHZ. 2020-10-21T22:43:37.38 0.6 undecidable manual S 29 31.6461 50 -0.07 64
IV.EL6.EHZ. 2020-10-21T22:43:36.25 0.3 undecidable manual P 7 54.501 50 -0.01 94
IV.MNTT.EHZ. 2020-10-21T22:43:36.79 0.3 undecidable manual P 62 52.9026 50 0.78 76
IV.MMO1.EHZ. 2020-10-21T22:43:35.43 0.6 undecidable manual S 76 25.9518 50 -0.5 60
IV.SNTG.HHZ. 2020-10-21T22:43:35.05 0.3 undecidable manual P 352 46.3203 50 0.06 94
IV.LNSS.HHZ. 2020-10-21T22:43:35.79 0.6 undecidable manual S 176 26.5512 50 -0.29 62
IV.RM33.EHZ. 2020-10-21T22:43:34.04 0.3 undecidable manual P 156 40.2264 50 -0.01 96
IV.CESX.HHZ. 2020-10-21T22:43:34.36 0.3 undecidable manual P 234 43.623 50 -0.22 92
IV.MF5.EHZ. 2020-10-21T22:43:34.15 0.3 undecidable manual P 66 39.4272 50 0.22 92
IV.FDMO.HHZ. 2020-10-21T22:43:34.52 0.6 undecidable manual S 15 22.3554 114 -0.25 63
IV.SMA1.EHZ. 2020-10-21T22:43:33.16 0.3 undecidable manual P 132 34.9428 50 -0.08 96
IV.ASSB.HHZ. 2020-10-21T22:43:33.31 0.3 undecidable manual P 308 36.741 50 -0.2 93
IV.GAVE.EHZ. 2020-10-21T22:43:33.79 0.6 undecidable manual S 211 19.3695 117 -0.06 66
IV.MOMA.HHZ. 2020-10-21T22:43:33.97 0.3 undecidable manual P 264 36.6411 50 0.46 88
IV.CESI.HHZ. 2020-10-21T22:43:33.49 0.6 undecidable manual S 333 20.3685 116 -0.65 57
IV.ARRO.EHZ. 2020-10-21T22:43:33.19 0.3 undecidable manual P 215 35.6421 50 -0.16 94
IV.GUMA.HHZ. 2020-10-21T22:43:33.44 0.3 undecidable manual P 46 35.6421 50 0.1 95
IV.FEMA.HNZ. 2020-10-21T22:43:32.32 0.6 undecidable manual S 11 13.6752 126 0.18 65
IV.CSP1.EHZ. 2020-10-21T22:43:32.54 0.3 undecidable manual P 29 31.6461 50 -0.19 94
IV.MC2.EHZ. 2020-10-21T22:43:32.95 0.6 undecidable manual S 61 15.9729 122 0.15 65
IT.MTCL.HGZ. 2020-10-21T22:43:32.87 0.6 undecidable manual S 355 16.9719 120 -0.25 64
IV.LNSS.HHZ. 2020-10-21T22:43:31.71 0.3 undecidable manual P 176 26.5512 50 -0.23 94
IV.FDMO.HHZ. 2020-10-21T22:43:31.09 0.3 undecidable manual P 15 22.3554 114 -0.1 98
IV.MMO1.EHZ. 2020-10-21T22:43:31.59 0.3 undecidable manual P 76 25.9518 50 -0.26 94
IV.CESI.HHZ. 2020-10-21T22:43:30.88 0.3 undecidable manual P 333 20.3685 116 0.06 99
IV.NRCA.HNZ. 2020-10-21T22:43:30.54 0.6 undecidable manual S 96 7.881 141 -0.15 66
IV.MC2.EHZ. 2020-10-21T22:43:30.21 0.3 undecidable manual P 61 15.9729 122 0.16 98
IT.MTCL.HGZ. 2020-10-21T22:43:30.30 0.3 undecidable manual P 355 16.9719 120 0.07 99
IV.GAVE.EHZ. 2020-10-21T22:43:30.72 0.3 undecidable manual P 211 19.3695 117 0.07 99
IV.FEMA.HNZ. 2020-10-21T22:43:29.89 0.3 undecidable manual P 11 13.6752 126 0.22 97
IV.NRCA.HNZ. 2020-10-21T22:43:28.94 0.3 undecidable manual P 96 7.881 141 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.3 0.0001523595 0.1024 AML other m 2020-10-21T22:43:34.36
IV.CESI.HHN. ML:1.7 0.0003279943 0.2688 AML other m 2020-10-21T22:43:34.29
IV.CESI.HNE. ML:1.2 0.00012700187 0.1536 AML other m 2020-10-21T22:43:34.36
IV.CESI.HNN. ML:1.6 0.00029413900000000006 0.1664 AML other m 2020-10-21T22:43:34.34
IV.SMA1.EHE. ML:1.1 0.00005062078 0.4224 AML other m 2020-10-21T22:43:42.66
IV.SMA1.EHN. ML:1.1 0.00005587496 0.384 AML other m 2020-10-21T22:43:41.95
IV.ARRO.EHE. ML:1.3 0.00007345418500000001 0.1664 AML other m 2020-10-21T22:43:40.07
IV.ARRO.EHN. ML:1.1 0.000049806445 0.1792 AML other m 2020-10-21T22:43:39.55
IV.ASSB.HHE. ML:1.2 0.000055309095 0.0896 AML other m 2020-10-21T22:43:41.14
IV.ASSB.HHN. ML:1.2 0.000055777734999999995 0.2048 AML other m 2020-10-21T22:43:39.46
IV.MOMA.HNE. ML:1.5 0.00013082996 0.256 AML other m 2020-10-21T22:43:40.63
IV.MOMA.HHE. ML:1.6 0.00013280225 0.2304 AML other m 2020-10-21T22:43:40.61
IV.MOMA.HHN. ML:1.2 0.00005985672 0.2432 AML other m 2020-10-21T22:43:41.24
IV.MF5.EHE. ML:1.4 0.00007947478865 0.3456 AML other m 2020-10-21T22:43:40.74
IV.MF5.EHN. ML:1.2 0.00005301564 0.2432 AML other m 2020-10-21T22:43:40.77
IV.CESX.HHE. ML:1.1 0.00004095940500000001 0.256 AML other m 2020-10-21T22:43:43.06
IV.CESX.HHN. ML:1.2 0.00004724789 0.2304 AML other m 2020-10-21T22:43:42.92
IV.SNTG.HHE. ML:1.0 0.0000297734 0.0768 AML other m 2020-10-21T22:43:42.68
IV.SNTG.HHN. ML:1.0 0.000029818089999999998 0.128 AML other m 2020-10-21T22:43:41.95
IV.EL6.EHE. ML:1.3 0.000048800820000000003 0.1664 AML other m 2020-10-21T22:43:46.69
IV.EL6.EHN. ML:1.3 0.000048710075000000005 0.1664 AML other m 2020-10-21T22:43:44.77
IV.MNTT.EHE. ML:1.6 0.000089929955 0.256 AML other m 2020-10-21T22:43:48.53
IV.MNTT.EHN. ML:1.6 0.00009712786 0.2304 AML other m 2020-10-21T22:43:47.53
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