Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 20-05-2020 and time 16:25:21 (Italy) in region 3 km SE Preci (PG)

A magnitude ML 1.7 earthquake occured in region: 3 km SE Preci (PG), on

  • 20-05-2020 14:25:21 (UTC)
  • 20-05-2020 16:25:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8600, 13.0660 at 11 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
Preci PG 3 724 724
Norcia PG 8 4957 5681
Visso MC 8 1107 6788
Castelsantangelo sul Nera MC 8 281 7069
Ussita MC 11 444 7513
Sellano PG 12 1079 8592
Cerreto di Spoleto PG 13 1075 9667
Monte Cavallo MC 16 145 9812
Cascia PG 16 3217 13029
Vallo di Nera PG 19 364 13393
Poggiodomo PG 20 117 13510
Fiordimonte MC 20 202 13712
Bolognola MC 20 142 13854

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
62 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
100 Km N of Guidonia Montecelio (88673 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 1.7 2020-05-20
14:25:21		 42.8603 13.0655 11 2020-11-19
12:36:56		 Bollettino Sismico Italiano INGV 81673351
Reviewed
Rev100 		ML 1.6 2020-05-20
14:25:21		 42.8607 13.0537 11 2020-05-20
14:32:08		 Sala Sismica INGV-Roma 79371181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-20 14:25:21 ± 0.05
Latitude 42.8603 ± 0.0027
Longitude 13.0655 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81673351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 227
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 75
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55218
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 81673351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-05 12:21:14

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 14
Type of magnitude ML
Reference to an origin 79371181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-20 14:32:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-05-20T14:25:44.86 3.0 undecidable manual S -0.1 0
IV.CRTC.HHZ. 2020-05-20T14:25:40.39 3.0 undecidable manual P 0.68 0
IV.EL6.EHZ. 2020-05-20T14:25:39.09 3.0 undecidable manual S -0.19 0
IV.CAMP.HHZ. 2020-05-20T14:25:36.04 0.6 undecidable manual S 142 45.621 50 -0.21 46
IV.SNTG.HHE. 2020-05-20T14:25:36.94 0.3 undecidable manual S 347 44.9217 50 0.87 56
IV.RM33.EHZ. 2020-05-20T14:25:35.27 0.3 undecidable manual S 163 40.8258 50 0.3 68
IV.GUMA.HHZ. 2020-05-20T14:25:33.03 0.3 undecidable manual S 44 31.3464 50 0.58 64
IV.PF6.EHN. 2020-05-20T14:25:32.58 0.3 undecidable manual S 19 32.5452 50 -0.18 71
IV.GIGS.HHN. 2020-05-20T14:25:32.02 0.6 undecidable manual P 137 61.2942 50 -0.44 42
IV.LNSS.HHE. 2020-05-20T14:25:31.66 0.6 undecidable manual S 184 28.6491 50 -0.06 49
IV.CSP1.EHZ. 2020-05-20T14:25:31.55 0.3 undecidable manual S 24 28.0497 50 -0.02 74
IV.EL6.EHZ. 2020-05-20T14:25:31.08 3.0 undecidable manual P -0.37 0
IV.MTRA.EHZ. 2020-05-20T14:25:31.90 0.3 undecidable manual S 113 29.2485 50 0 74
IV.ATCC.EHZ. 2020-05-20T14:25:30.89 3.0 negative manual P -0.07 0
IV.TERO.HHZ. 2020-05-20T14:25:30.77 3.0 negative manual P -0.33 0
IV.CESX.HHE. 2020-05-20T14:25:30.44 0.6 undecidable manual P 235 48.0186 50 0.03 47
IV.CESI.HHZ. 2020-05-20T14:25:29.48 0.3 undecidable manual S 321 20.6682 50 -0.12 73
IV.CAMP.HHZ. 2020-05-20T14:25:29.91 0.3 undecidable manual P 142 45.621 50 -0.14 70
IV.SNTG.HHE. 2020-05-20T14:25:29.87 0.3 undecidable manual P 347 44.9217 50 -0.08 71
IV.ARRO.EHE. 2020-05-20T14:25:29.15 0.3 undecidable manual P 218 39.627 50 0.02 72
IV.MMO1.EHZ. 2020-05-20T14:25:29.65 0.1 undecidable manual S 78 21.6672 50 -0.22 96
IV.MOMA.HNZ. 2020-05-20T14:25:29.46 0.3 undecidable manual P 261 40.8258 50 0.15 70
IV.FDMO.HHZ. 2020-05-20T14:25:29.01 0.3 undecidable manual S 5 19.6692 50 -0.3 71
IV.RM33.EHZ. 2020-05-20T14:25:29.41 0.3 undecidable manual P 163 40.8258 50 0.1 71
IV.SMA1.EHZ. 2020-05-20T14:25:28.29 0.3 undecidable manual P 139 33.6441 50 0.08 72
IV.SAP2.EHE. 2020-05-20T14:25:28.71 0.6 undecidable manual P 46 37.7289 50 -0.12 47
IV.ASSB.HHZ. 2020-05-20T14:25:28.92 3.0 positive manual P -0.14 0
IV.GUMA.HHZ. 2020-05-20T14:25:28.10 0.3 undecidable manual P 44 31.3464 50 0.25 70
IV.MDAR.HNN. 2020-05-20T14:25:28.46 0.3 undecidable manual P 10 37.4292 50 -0.33 68
IV.CSP1.EHZ. 2020-05-20T14:25:27.35 0.3 undecidable manual P 24 28.0497 50 0 74
IV.MTRA.EHZ. 2020-05-20T14:25:27.41 0.3 undecidable manual P 113 29.2485 50 -0.13 72
IV.MC2.EHZ. 2020-05-20T14:25:27.30 0.3 undecidable manual S 60 11.5773 133 0.21 73
IV.PF6.EHN. 2020-05-20T14:25:27.88 0.3 undecidable manual P 19 32.5452 50 -0.16 71
IV.LNSS.HHE. 2020-05-20T14:25:27.42 0.3 undecidable manual P 184 28.6491 50 -0.01 74
IT.MTCL.HGZ. 2020-05-20T14:25:27.89 0.3 undecidable manual S 340 15.7731 125 -0.34 71
IV.MML1.HNE. 2020-05-20T14:25:27.40 0.6 undecidable manual P 345 29.1486 50 -0.11 48
IV.FEMA.HNE. 2020-05-20T14:25:26.99 0.3 undecidable manual S 354 11.3775 134 -0.06 75
IV.FDMO.HHZ. 2020-05-20T14:25:26.01 0.3 undecidable manual P 5 19.6692 50 -0.04 75
IV.CESI.HHZ. 2020-05-20T14:25:26.25 0.1 undecidable manual P 321 20.6682 50 0.04 99
IV.MMO1.EHZ. 2020-05-20T14:25:26.32 0.1 undecidable manual P 78 21.6672 50 -0.04 99
IT.MTCL.HGZ. 2020-05-20T14:25:25.44 0.3 undecidable manual P 340 15.7731 125 0.02 75
IV.NRCA.HNZ. 2020-05-20T14:25:25.59 0.1 undecidable manual S 127 4.995 156 -0.15 100
IV.NRCA.HNZ. 2020-05-20T14:25:24.12 0.1 undecidable manual P 127 4.995 156 0.14 100
IV.FEMA.HNE. 2020-05-20T14:25:24.92 0.3 undecidable manual P 354 11.3775 134 0.18 74
IV.MC2.EHZ. 2020-05-20T14:25:24.97 0.1 undecidable manual P 60 11.5773 133 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.3 0.0029361515000000003 0.0896 AML other m 2020-05-20T14:25:25.65
IV.NRCA.HNN. ML:2.4 0.0044175345000000005 0.0896 AML other m 2020-05-20T14:25:25.69
IV.NRCA.HHN. ML:2.5 0.0050648475 0.0768 AML other m 2020-05-20T14:25:25.69
IV.NRCA.HHE. ML:2.3 0.0028329930000000002 0.096 AML other m 2020-05-20T14:25:25.65
IV.FDMO.HHE. ML:1.5 0.00024309385 0.1024 AML other m 2020-05-20T14:25:29.62
IV.FDMO.HHN. ML:1.6 0.00031112715 0.096 AML other m 2020-05-20T14:25:29.76
IV.CESI.HHE. ML:1.7 0.00035876619999999996 0.1024 AML other m 2020-05-20T14:25:29.79
IV.CESI.HHN. ML:1.9 0.00056739505 0.2368 AML other m 2020-05-20T14:25:29.95
IV.CESI.HNE. ML:1.7 0.00032834745 0.1216 AML other m 2020-05-20T14:25:29.80
IV.CESI.HNN. ML:1.9 0.00056080245 0.2368 AML other m 2020-05-20T14:25:29.96
IV.CSP1.EHN. ML:1.7 0.00025438500000000004 0.2368 AML other m 2020-05-20T14:25:32.65
IV.CSP1.EHE. ML:1.6 0.00018578875 0.1792 AML other m 2020-05-20T14:25:32.30
IV.MTRA.EHE. ML:2.0 0.00043606115 0.1408 AML other m 2020-05-20T14:25:32.10
IV.MTRA.HNE. ML:2.0 0.0004626823 0.16 AML other m 2020-05-20T14:25:32.10
IV.MTRA.EHN. ML:1.9 0.000405906 0.1792 AML other m 2020-05-20T14:25:32.71
IV.MTRA.HNN. ML:1.9 0.00038771454999999997 0.1792 AML other m 2020-05-20T14:25:32.70
IV.GUMA.HNN. ML:2.0 0.00040942485 0.2752 AML other m 2020-05-20T14:25:35.95
IV.GUMA.HHE. ML:2.0 0.00043521140000000005 0.256 AML other m 2020-05-20T14:25:35.94
IV.GUMA.HHN. ML:2.0 0.00044641805 0.2176 AML other m 2020-05-20T14:25:33.58
IV.GUMA.HNE. ML:1.8 0.0003191026 0.512 AML other m 2020-05-20T14:25:39.36
IV.SMA1.EHN. ML:1.4 0.0001167165 0.2624 AML other m 2020-05-20T14:25:37.53
IV.SMA1.EHE. ML:1.4 0.000102876575 0.16 AML other m 2020-05-20T14:25:34.57
IV.ASSB.HHN. ML:1.4 0.00008657993 0.2624 AML other m 2020-05-20T14:25:36.53
IV.ASSB.HHE. ML:1.5 0.00010432846499999999 0.1024 AML other m 2020-05-20T14:25:35.34
IV.RM33.EHN. ML:1.1 0.00004557164 0.1408 AML other m 2020-05-20T14:25:35.60
IV.RM33.EHE. ML:1.1 0.000041092514999999994 0.16 AML other m 2020-05-20T14:25:37.20
IV.CAMP.HHE. ML:1.1 0.00003407152 0.16 AML other m 2020-05-20T14:25:37.30
IV.CAMP.HHN. ML:0.9 0.000024615200000000004 0.48 AML other m 2020-05-20T14:25:38.92
IV.TERO.HHN. ML:1.4 0.000069026695 0.096 AML other m 2020-05-20T14:25:38.25
IV.TERO.HHE. ML:1.4 0.000070264985 0.1344 AML other m 2020-05-20T14:25:38.60
IV.ATCC.EHE. ML:1.5 0.00007767255000000001 0.1984 AML other m 2020-05-20T14:25:39.72
IV.ATCC.EHN. ML:1.4 0.00006426367499999999 0.2816 AML other m 2020-05-20T14:25:39.11
IV.EL6.EHN. ML:1.5 0.000075568575 0.2368 AML other m 2020-05-20T14:25:40.67
IV.EL6.EHE. ML:1.4 0.000056980815 0.2368 AML other m 2020-05-20T14:25:43.35
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