Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 29-04-2020 and time 16:23:40 (UTC) in region 1 km N Preci (PG)

A magnitude ML 1.7 earthquake occured in region: 1 km N Preci (PG), on

  • 29-04-2020 16:23:40 (UTC)
  • 29-04-2020 18:23:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8900, 13.0380 at 10 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 1 724 724
Visso MC 6 1107 1831
Sellano PG 9 1079 2910
Castelsantangelo sul Nera MC 10 281 3191
Ussita MC 10 444 3635
Norcia PG 12 4957 8592
Monte Cavallo MC 12 145 8737
Cerreto di Spoleto PG 13 1075 9812
Fiordimonte MC 17 202 10014
Pieve Torina MC 17 1458 11472
Fiastra MC 19 559 12031
Cascia PG 19 3217 15248
Acquacanina MC 19 121 15369
Bolognola MC 19 142 15511
Vallo di Nera PG 20 364 15875
Pievebovigliana MC 20 866 16741

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
58 Km E of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
100 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 1.7 2020-04-29
16:23:40		 42.8905 13.0375 10 2020-07-18
21:08:35		 Bollettino Sismico Italiano INGV 78953631
Reviewed
Rev100 		ML 1.8 2020-04-29
16:23:40		 42.8882 13.0363 10 2020-04-29
16:31:17		 Sala Sismica INGV-Roma 78675621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-29 16:23:40 ± 0.05
Latitude 42.8905 ± 0.0027
Longitude 13.0375 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78953631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 338
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
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 42
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44067
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 37
Type of magnitude ML
Reference to an origin 78953631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-08 13:48:05

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 78675621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-29 16:31:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-04-29T16:23:56.38 0.3 undecidable manual S 6 48.9177 50 0.5 63
IV.ATCC.EHZ. 2020-04-29T16:23:55.31 0.3 undecidable manual S 316 45.9207 50 0.24 67
IV.CESX.HHZ. 2020-04-29T16:23:55.93 0.3 undecidable manual S 230 48.2184 50 0.24 67
IV.RM33.EHZ. 2020-04-29T16:23:54.90 0.3 undecidable manual S 161 44.7219 50 0.15 69
IV.MOMA.HHZ. 2020-04-29T16:23:53.91 0.3 undecidable manual S 256 39.2274 50 0.63 61
IV.ARRO.EHZ. 2020-04-29T16:23:53.99 0.3 undecidable manual S 213 41.0256 50 0.22 68
IV.SNTG.HHZ. 2020-04-29T16:23:53.72 0.3 undecidable manual S 349 41.2254 50 -0.09 70
IV.SMA1.EHN. 2020-04-29T16:23:53.22 0.3 undecidable manual S 140 37.629 50 0.35 67
IV.MF5.EHZ. 2020-04-29T16:23:53.26 0.3 undecidable manual S 72 35.9418 50 0.86 56
IV.FIAM.HHZ. 2020-04-29T16:23:52.26 3.0 undecidable manual P 0.04 0
IV.MTRA.EHZ. 2020-04-29T16:23:51.10 0.3 undecidable manual S 117 32.745 50 -0.46 66
IV.GUMA.HHZ. 2020-04-29T16:23:51.36 0.3 undecidable manual S 52 30.8469 50 0.33 68
IV.PF6.EHN. 2020-04-29T16:23:50.63 0.6 undecidable manual S 25 30.2475 50 -0.26 46
IV.CSP1.EHZ. 2020-04-29T16:23:49.52 0.3 undecidable manual S 31 26.1516 110 -0.19 70
IV.MML1.HNZ. 2020-04-29T16:23:49.12 0.3 undecidable manual S 348 25.3524 111 -0.32 69
IV.EL6.EHZ. 2020-04-29T16:23:48.94 0.3 undecidable manual P 6 48.9177 50 -0.24 67
IV.RM33.EHZ. 2020-04-29T16:23:48.23 0.3 undecidable manual P 161 44.7219 50 -0.3 66
IV.ATCC.EHZ. 2020-04-29T16:23:48.57 0.1 undecidable manual P 316 45.9207 50 -0.14 91
IV.MMO1.EHZ. 2020-04-29T16:23:48.60 0.3 undecidable manual S 88 23.5542 112 -0.26 70
IV.CESX.HHZ. 2020-04-29T16:23:48.63 0.3 undecidable manual P 230 48.2184 50 -0.45 64
IV.SNTG.HHZ. 2020-04-29T16:23:47.66 0.1 undecidable manual P 349 41.2254 50 -0.33 89
IV.SMA1.EHN. 2020-04-29T16:23:47.43 0.3 undecidable manual P 140 37.629 50 -0.02 71
IV.MF5.EHZ. 2020-04-29T16:23:47.34 0.1 positive manual P 72 35.9418 50 0.16 93
IV.MOMA.HHZ. 2020-04-29T16:23:47.49 0.1 undecidable manual P 256 39.2274 50 -0.19 91
IV.ARRO.EHZ. 2020-04-29T16:23:47.62 0.1 undecidable manual P 213 41.0256 50 -0.34 88
IV.GUMA.HHZ. 2020-04-29T16:23:46.35 0.1 undecidable manual P 52 30.8469 50 -0.04 96
IV.CESI.HHZ. 2020-04-29T16:23:46.77 0.3 undecidable manual S 320 16.6722 120 0.05 74
IV.T1299.HNN. 2020-04-29T16:23:46.91 0.3 undecidable manual P 145 34.743 50 -0.08 71
IV.MTRA.EHZ. 2020-04-29T16:23:46.34 0.1 undecidable manual P 117 32.745 50 -0.35 90
IV.PF6.EHN. 2020-04-29T16:23:46.09 0.3 undecidable manual P 25 30.2475 50 -0.21 69
IV.MC2.EHZ. 2020-04-29T16:23:45.87 0.3 undecidable manual S 79 12.4764 128 0.34 70
IV.MML1.HNZ. 2020-04-29T16:23:45.22 0.1 undecidable manual P 348 25.3524 111 -0.25 93
IV.CSP1.EHZ. 2020-04-29T16:23:45.35 0.1 undecidable manual P 31 26.1516 110 -0.27 92
IT.MTCL.HGZ. 2020-04-29T16:23:45.36 0.3 undecidable manual S 345 11.877 129 0.01 75
IV.MMO1.EHZ. 2020-04-29T16:23:44.94 0.1 undecidable manual P 88 23.5542 112 -0.19 94
IV.NRCA.HNZ. 2020-04-29T16:23:44.61 0.1 undecidable manual S 135 8.88 137 0.02 100
IV.FEMA.HNZ. 2020-04-29T16:23:44.71 0.3 undecidable manual S 7 7.9809 140 0.32 71
IV.CESI.HHZ. 2020-04-29T16:23:44.01 0.1 undecidable manual P 320 16.6722 120 0.12 97
IT.MTCL.HGZ. 2020-04-29T16:23:43.25 0.1 undecidable manual P 345 11.877 129 0.14 97
IV.MC2.EHZ. 2020-04-29T16:23:43.45 0.1 negative manual P 79 12.4764 128 0.24 95
IV.FEMA.HNZ. 2020-04-29T16:23:42.88 0.1 negative manual P 7 7.9809 140 0.33 94
IV.NRCA.HNZ. 2020-04-29T16:23:42.80 0.1 negative manual P 135 8.88 137 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:1.8 0.0002367496 0.1408 AML other m 2020-04-29T16:23:54.87
IV.MOMA.HHN. ML:1.6 0.00015900000000000002 0.52 AML other m 2020-04-29T16:23:54.00
IV.MF5.EHN. ML:1.7 0.0001815 0.26 AML other m 2020-04-29T16:23:54.05
IV.FEMA.HNE. ML:1.8 0.0009063969999999999 0.1152 AML other m 2020-04-29T16:23:45.09
IV.FEMA.HNN. ML:1.8 0.00097504915 0.1024 AML other m 2020-04-29T16:23:45.19
IV.CESI.HHN. ML:1.9 0.0007929586 0.1792 AML other m 2020-04-29T16:23:47.15
IV.CESI.HNE. ML:1.7 0.00040758015000000005 0.2304 AML other m 2020-04-29T16:23:47.41
IV.CESI.HHE. ML:1.8 0.00051770425 0.256 AML other m 2020-04-29T16:23:47.40
IV.CESI.HNN. ML:1.9 0.00075274055 0.1664 AML other m 2020-04-29T16:23:47.07
IV.CSP1.EHE. ML:2.0 0.0005182090500000001 0.2304 AML other m 2020-04-29T16:23:50.13
IV.CSP1.EHN. ML:1.8 0.0003786488 0.1536 AML other m 2020-04-29T16:23:50.23
IV.MTRA.HNN. ML:1.7 0.00022210085000000002 0.2048 AML other m 2020-04-29T16:23:52.18
IV.MTRA.EHE. ML:1.7 0.0002320784 0.1408 AML other m 2020-04-29T16:23:51.80
IV.MTRA.EHN. ML:1.7 0.000217479 0.2048 AML other m 2020-04-29T16:23:52.19
IV.MTRA.HNE. ML:1.7 0.0002332618 0.1536 AML other m 2020-04-29T16:23:51.80
IV.GUMA.HNE. ML:2.0 0.0005032658999999999 0.4864 AML other m 2020-04-29T16:23:53.52
IV.GUMA.HNN. ML:2.0 0.0004943834000000001 0.5504 AML other m 2020-04-29T16:23:54.21
IV.GUMA.HHE. ML:2.0 0.0004991949 0.64 AML other m 2020-04-29T16:23:54.21
IV.GUMA.HHN. ML:2.0 0.0005171114 0.3072 AML other m 2020-04-29T16:23:51.56
IV.MOMA.HNN. ML:1.7 0.00017307325000000002 0.2048 AML other m 2020-04-29T16:23:54.94
IV.MOMA.HNE. ML:1.8 0.0002120949 0.1408 AML other m 2020-04-29T16:23:54.94
IV.ARRO.EHE. ML:1.5 0.00010447495000000002 0.2048 AML other m 2020-04-29T16:23:54.71
IV.ARRO.EHN. ML:1.4 0.00009569419500000002 0.2048 AML other m 2020-04-29T16:23:54.55
IV.SNTG.HNN. ML:1.7 0.0001865201 0.7296 AML other m 2020-04-29T16:23:59.10
IV.SNTG.HNE. ML:1.8 0.00020703555000000002 0.9728 AML other m 2020-04-29T16:24:03.94
IV.SNTG.HHE. ML:1.2 0.000049227720000000004 0.1408 AML other m 2020-04-29T16:23:56.26
IV.SNTG.HHN. ML:1.2 0.000050652959999999995 0.1664 AML other m 2020-04-29T16:23:54.30
IV.RM33.HNE. ML:1.7 0.00015347090000000001 0.6144 AML other m 2020-04-29T16:23:55.17
IV.RM33.EHE. ML:1.3 0.000059929885 0.2432 AML other m 2020-04-29T16:23:56.08
IV.RM33.EHN. ML:1.2 0.000049783620000000004 0.2688 AML other m 2020-04-29T16:23:56.43
IV.ATCC.EHN. ML:1.3 0.000059481805 0.4224 AML other m 2020-04-29T16:24:01.08
IV.ATCC.EHE. ML:1.2 0.00005003898 0.2816 AML other m 2020-04-29T16:24:03.82
IV.CESX.HHE. ML:1.6 0.000105988 0.2048 AML other m 2020-04-29T16:23:58.13
IV.CESX.HHN. ML:1.7 0.00013634245 0.2432 AML other m 2020-04-29T16:23:56.46
IV.EL6.EHE. ML:1.6 0.00011418755 0.192 AML other m 2020-04-29T16:23:57.40
IV.EL6.EHN. ML:1.6 0.00009992559500000001 0.2176 AML other m 2020-04-29T16:23:56.90
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