Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 19-04-2020 and time 18:51:26 (Italy) in region 4 km E Preci (PG)

A magnitude ML 0.4 earthquake occured in region: 4 km E Preci (PG), on

  • 19-04-2020 16:51:26 (UTC)
  • 19-04-2020 18:51:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8950, 13.0800 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 4 724 724
Visso MC 4 1107 1831
Castelsantangelo sul Nera MC 6 281 2112
Ussita MC 7 444 2556
Norcia PG 11 4957 7513
Sellano PG 12 1079 8592
Monte Cavallo MC 13 145 8737
Cerreto di Spoleto PG 16 1075 9812
Fiordimonte MC 16 202 10014
Bolognola MC 16 142 10156
Pieve Torina MC 17 1458 11614
Fiastra MC 17 559 12173
Acquacanina MC 17 121 12294
Pievebovigliana MC 19 866 13160

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
51 Km NE of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
96 Km NE of Viterbo (67173 inhabitants)
97 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 0.4 2020-04-19
16:51:26		 42.8952 13.0797 11 2020-07-18
21:08:34		 Bollettino Sismico Italiano INGV 78440471
Reviewed
Rev100 		ML 0.7 2020-04-19
16:51:26		 42.9033 13.0938 7 2020-04-19
16:59:22		 Sala Sismica INGV-Roma 78394371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-19 16:51:26 ± 0.05
Latitude 42.8952 ± 0.0027
Longitude 13.0797 ± 0.0037
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 78440471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 379
Semi-minor axis of confidence ellipse (meter) 291
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38401
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 78394371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-19 16:59:22

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 78440471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-21 10:31:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.CARE.EHZ. 2020-04-19T16:53:03.76 3.0 undecidable manual Sn -9.04 0
IV.PZUN.HHZ. 2020-04-19T16:52:30.58 3.0 undecidable manual Sg 3.05 0
IV.CAFE.HHZ. 2020-04-19T16:52:16.37 3.0 undecidable manual Sg 0.87 0
XK.GIZZ.HHZ. 2020-04-19T16:52:13.44 3.0 undecidable manual Pg 5.36 0
OT.OT05.EHZ. 2020-04-19T16:52:00.63 3.0 undecidable manual Sn -9.99 0
IV.ZCCA.HHZ. 2020-04-19T16:51:54.50 3.0 positive manual Pn 3.34 0
IV.ASQU.HHZ. 2020-04-19T16:51:42.04 3.0 undecidable manual Pn -0.46 0
IV.LNSS.HNZ. 2020-04-19T16:51:37.60 0.6 undecidable manual S 186 32.5452 50 0.2 48
IV.MF5.EHN. 2020-04-19T16:51:37.75 1.0 undecidable manual S 71 32.5452 50 0.36 23
IV.MML1.HNE. 2020-04-19T16:51:35.41 0.6 undecidable manual S 340 25.752 50 -0.17 49
IV.CSP1.EHZ. 2020-04-19T16:51:35.03 0.3 undecidable manual S 25 24.0537 50 -0.1 74
IV.MMO1.EHN. 2020-04-19T16:51:33.71 0.3 undecidable manual S 89 20.0688 118 -0.31 72
IV.MOMA.HNZ. 2020-04-19T16:51:33.87 0.1 undecidable manual P 256 42.624 50 -0.32 91
IV.CESI.HHZ. 2020-04-19T16:51:33.86 0.3 undecidable manual S 311 18.6702 120 0.26 72
IV.GUMA.HNN. 2020-04-19T16:51:32.09 0.1 undecidable manual P 48 27.8499 50 0.18 97
IV.FDMO.HHZ. 2020-04-19T16:51:32.45 0.3 undecidable manual S 2 15.6732 124 -0.26 73
IV.LNSS.HNZ. 2020-04-19T16:51:32.56 0.1 undecidable manual P 186 32.5452 50 -0.08 98
IV.MF5.EHN. 2020-04-19T16:51:32.80 0.1 undecidable manual P 71 32.5452 50 0.17 96
IT.MTCL.HGZ. 2020-04-19T16:51:31.75 0.3 undecidable manual S 329 12.7761 130 -0.14 75
IV.MC2.EHZ. 2020-04-19T16:51:31.01 0.3 undecidable manual S 78 9.0798 139 0.04 77
IV.CSP1.EHZ. 2020-04-19T16:51:31.39 0.6 undecidable manual P 25 24.0537 50 0.06 50
IV.MML1.HNE. 2020-04-19T16:51:31.20 0.6 undecidable manual P 340 25.752 50 -0.39 46
IV.CESI.HHZ. 2020-04-19T16:51:30.63 0.6 undecidable manual P 311 18.6702 120 0.19 49
IV.FEMA.HNE. 2020-04-19T16:51:30.62 0.6 undecidable manual S 342 7.7811 144 -0.08 51
IV.NRCA.HHZ. 2020-04-19T16:51:30.39 0.3 undecidable manual S 158 7.3815 145 -0.23 74
IV.MMO1.EHN. 2020-04-19T16:51:30.65 0.3 undecidable manual P 89 20.0688 118 -0.04 76
IT.MTCL.HGZ. 2020-04-19T16:51:29.60 0.1 undecidable manual P 329 12.7761 130 0.14 100
IV.MC2.EHZ. 2020-04-19T16:51:29.20 0.6 negative manual P 78 9.0798 139 0.27 49
IV.FDMO.HHZ. 2020-04-19T16:51:29.99 0.3 undecidable manual P 2 15.6732 124 0.06 76
IV.FEMA.HNE. 2020-04-19T16:51:29.03 0.3 undecidable manual P 342 7.7811 144 0.26 74
IV.NRCA.HHZ. 2020-04-19T16:51:28.88 0.3 undecidable manual P 158 7.3815 145 0.15 76
IV.LRP.EHZ. 2020-04-19T16:51:27.68 3.0 undecidable manual P -3.43 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.7 0.0000373 0.14 AML other m 2020-04-19T16:51:34.01
IV.CESI.HHE. ML:0.4 0.000020749999999999996 0.54 AML other m 2020-04-19T16:51:34.34
IV.FDMO.HHE. ML:0.2 0.00001295 0.68 AML other m 2020-04-19T16:51:34.14
IV.FDMO.HHN. ML:0.2 0.0000144 0.86 AML other m 2020-04-19T16:51:35.25
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