Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 18-05-2020 and time 17:47:44 (Italy) in region 4 km E Preci (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km E Preci (PG), on

  • 18-05-2020 15:47:44 (UTC)
  • 18-05-2020 17:47:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8670, 13.0890 at 12 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 4 724 724
Castelsantangelo sul Nera MC 6 281 1005
Visso MC 7 1107 2112
Norcia PG 8 4957 7069
Ussita MC 10 444 7513
Sellano PG 13 1079 8592
Cerreto di Spoleto PG 15 1075 9667
Monte Cavallo MC 16 145 9812
Cascia PG 18 3217 13029
Bolognola MC 18 142 13171
Fiordimonte MC 19 202 13373
Acquacanina MC 20 121 13494
Fiastra MC 20 559 14053
Montemonaco AP 20 604 14657
Arquata del Tronto AP 20 1178 15835

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
63 Km E of Perugia (166134 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
95 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
Bulletin
Rev1000 		ML 1.5 2020-05-18
15:47:44		 42.8668 13.0888 12 2020-11-19
12:36:53		 Bollettino Sismico Italiano INGV 81003241
Reviewed
Rev100 		ML 1.4 2020-05-18
15:47:44		 42.8732 13.0958 11 2020-05-18
15:56:40		 Sala Sismica INGV-Roma 79287651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 15:47:44 ± 0.09
Latitude 42.8668 ± 0.0045
Longitude 13.0888 ± 0.0061
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81003241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 480
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57107
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 81003241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-13 11:50:47

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 79287651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 15:56:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-05-18T15:48:01.62 3.0 undecidable manual S 1 51.3153 91 0.89 0
IV.MTRA.EHZ. 2020-05-18T15:47:54.51 0.3 undecidable manual S 116 27.8499 91 0.04 73
IV.EL6.EHZ. 2020-05-18T15:47:54.52 0.3 undecidable manual P 1 51.3153 91 0.62 60
IV.CSP1.EHZ. 2020-05-18T15:47:54.10 0.1 undecidable manual S 21 26.6511 92 -0.05 96
IV.MML1.EHE. 2020-05-18T15:47:54.63 0.1 undecidable manual S 341 28.9488 91 -0.13 94
IV.MURB.HHZ. 2020-05-18T15:47:54.62 0.3 undecidable manual P 314 63.3921 90 -1.14 46
IV.TERO.HHZ. 2020-05-18T15:47:53.60 0.3 undecidable manual P 123 49.9167 91 -0.09 68
IV.CESI.HHZ. 2020-05-18T15:47:52.86 0.1 undecidable manual S 316 21.3675 93 0.11 96
IT.MTCL.HGN. 2020-05-18T15:47:51.14 0.3 undecidable manual S 333 15.873 97 -0.13 72
IV.FDMO.HHZ. 2020-05-18T15:47:51.70 0.1 undecidable manual S 360 18.7701 94 -0.36 91
IV.MF5.EHZ. 2020-05-18T15:47:51.55 0.3 undecidable manual P 66 32.9448 91 0.48 66
IV.MMO1.EHZ. 2020-05-18T15:47:51.97 0.1 undecidable manual S 79 19.6692 93 -0.32 92
IV.MML1.EHE. 2020-05-18T15:47:50.40 0.1 undecidable manual P 341 28.9488 91 -0.06 95
IV.LNSS.HNN. 2020-05-18T15:47:50.66 0.6 undecidable manual P 188 29.5482 91 0.11 48
IV.PF6.EHE. 2020-05-18T15:47:50.71 0.1 undecidable manual P 16 31.2465 91 -0.1 94
IV.MTRA.EHZ. 2020-05-18T15:47:50.27 0.1 undecidable manual P 116 27.8499 91 -0.02 96
IV.T1299.HNE. 2020-05-18T15:47:50.95 3.0 undecidable manual P 0.06 0
IV.CSP1.EHZ. 2020-05-18T15:47:50.13 0.1 undecidable manual P 21 26.6511 92 0.03 97
IV.SMA1.EHE. 2020-05-18T15:47:50.98 1.0 undecidable manual P 142 33.0447 91 -0.1 23
IV.FEMA.HNN. 2020-05-18T15:47:50.06 0.1 undecidable manual S 343 10.9779 118 0.02 99
IV.GUMA.HNE. 2020-05-18T15:47:50.74 0.3 undecidable manual P 43 29.5482 91 0.19 70
IV.MMO1.EHZ. 2020-05-18T15:47:49.00 0.1 undecidable manual P 79 19.6692 93 -0.03 97
IV.CESI.HHZ. 2020-05-18T15:47:49.49 0.1 undecidable manual P 316 21.3675 93 0.19 95
IV.MC2.EHZ. 2020-05-18T15:47:49.71 0.1 undecidable manual S 59 9.4794 125 0.01 100
IV.NRCA.HNZ. 2020-05-18T15:47:48.58 0.1 undecidable manual S 151 4.1958 153 -0.2 97
IT.MTCL.HGN. 2020-05-18T15:47:48.55 0.1 undecidable manual P 333 15.873 97 0.11 97
IV.FDMO.HHZ. 2020-05-18T15:47:48.93 0.1 undecidable manual P 360 18.7701 94 0.04 98
IV.MC2.EHZ. 2020-05-18T15:47:47.68 0.1 undecidable manual P 59 9.4794 125 0.15 98
IV.FEMA.HNN. 2020-05-18T15:47:47.93 0.1 undecidable manual P 343 10.9779 118 0.2 96
IV.NRCA.HNZ. 2020-05-18T15:47:47.11 0.1 undecidable manual P 151 4.1958 153 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.9 0.00128 0.16 AML other m 2020-05-18T15:47:48.73
IV.NRCA.HHE. ML:1.9 0.0011155 0.14 AML other m 2020-05-18T15:47:48.72
IV.NRCA.HHN. ML:1.9 0.00131 0.14 AML other m 2020-05-18T15:47:48.72
IV.NRCA.HNE. ML:1.8 0.000925 0.14 AML other m 2020-05-18T15:47:48.73
IV.FDMO.HHE. ML:1.0 0.0000781 0.68 AML other m 2020-05-18T15:47:52.02
IV.FDMO.HHN. ML:1.2 0.00010405000000000001 1.26 AML other m 2020-05-18T15:47:52.88
IV.CESI.HNE. ML:1.0 0.00007345442000000001 0.2048 AML other m 2020-05-18T15:47:53.31
IV.CESI.HNN. ML:1.5 0.000198098625 0.1536 AML other m 2020-05-18T15:47:53.24
IV.CESI.HHN. ML:1.4 0.0001735 0.14 AML other m 2020-05-18T15:47:53.32
IV.CESI.HHE. ML:1.2 0.00009355 0.52 AML other m 2020-05-18T15:47:53.31
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