Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-07-2019 and time 01:23:15 (Italy) in region 1 km NW Visso (MC)

A magnitude ML 1.6 earthquake occured in region: 1 km NW Visso (MC), on

  • 27-07-2019 23:23:15 (UTC)
  • 28-07-2019 01:23:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9410, 13.0790 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
Visso MC 1 1107 1107
Ussita MC 5 444 1551
Preci PG 8 724 2275
Castelsantangelo sul Nera MC 8 281 2556
Monte Cavallo MC 9 145 2701
Fiordimonte MC 11 202 2903
Pieve Torina MC 12 1458 4361
Fiastra MC 12 559 4920
Acquacanina MC 13 121 5041
Sellano PG 14 1079 6120
Bolognola MC 14 142 6262
Pievebovigliana MC 14 866 7128
Muccia MC 16 915 8043
Norcia PG 17 4957 13000
Serravalle di Chienti MC 18 1070 14070
Cerreto di Spoleto PG 19 1075 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
59 Km E of Perugia (166134 inhabitants)
60 Km NW of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
99 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 1.6 2019-07-27
23:23:15		 42.941 13.0787 11 2019-11-13
14:30:59		 Bollettino Sismico Italiano INGV 71816141
Reviewed
Rev100 		ML 1.5 2019-07-27
23:23:15		 42.9412 13.0812 10 2019-07-27
23:29:26		 Sala Sismica INGV-Roma 70952001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-27 23:23:15 ± 0.05
Latitude 42.9410 ± 0.0027
Longitude 13.0787 ± 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 71816141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 388
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 41
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39660
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 70952001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-27 23:29:26

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 71816141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-26 10:36:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LNSS.HHZ. 2019-07-27T23:23:28.02 0.6 undecidable manual S 185 37.629 50 0.3 45
IV.T1299.EHE. 2019-07-27T23:23:28.07 0.3 undecidable manual S 154 37.8288 50 0.29 68
IV.SMA1.EHN. 2019-07-27T23:23:28.28 0.6 undecidable manual S 149 40.3263 50 -0.15 46
IV.ASSB.HHN. 2019-07-27T23:23:27.14 0.3 undecidable manual S 288 35.9418 50 -0.12 71
IV.GAVE.EHE. 2019-07-27T23:23:26.24 0.6 undecidable manual S 209 31.4463 50 0.18 47
IV.MTRA.EHE. 2019-07-27T23:23:26.30 0.3 undecidable manual S 128 32.9448 50 -0.18 70
IV.SAP2.EHE. 2019-07-27T23:23:26.56 0.3 undecidable manual S 56 31.2465 50 0.56 64
IV.MF5.EHZ. 2019-07-27T23:23:26.59 0.3 undecidable manual S 80 31.3464 50 0.54 64
IV.GUMA.HHZ. 2019-07-27T23:23:24.58 0.3 undecidable manual S 57 24.753 50 0.28 70
IV.SEF1.HNE. 2019-07-27T23:23:24.43 0.6 undecidable manual S 335 25.1526 50 0.03 49
IV.MML1.EHE. 2019-07-27T23:23:23.16 0.3 undecidable manual S 336 20.9679 117 -0.13 72
IV.MNTT.EHZ. 2019-07-27T23:23:23.84 0.6 negative manual P 72 44.0226 50 0.46 43
IV.PF6.EHE. 2019-07-27T23:23:23.44 0.3 undecidable manual S 23 23.754 50 -0.58 64
IV.MOMA.HNZ. 2019-07-27T23:23:23.55 0.6 undecidable manual P 250 44.0226 50 0.16 46
IV.MMO1.EHZ. 2019-07-27T23:23:22.66 0.3 undecidable manual S 103 20.6682 117 -0.53 66
IV.T1299.EHE. 2019-07-27T23:23:22.35 0.1 undecidable manual P 154 37.8288 50 -0.08 94
IV.SMA1.EHN. 2019-07-27T23:23:22.79 0.3 undecidable manual P 149 40.3263 50 -0.02 71
IV.EL6.EHE. 2019-07-27T23:23:22.99 0.3 undecidable manual P 2 43.1235 50 -0.25 68
IV.LNSS.HHZ. 2019-07-27T23:23:22.24 0.1 undecidable manual P 185 37.629 50 -0.16 93
IT.FOSV.EHZ. 2019-07-27T23:23:22.16 3.0 undecidable manual P 0
IV.SEF1.HNE. 2019-07-27T23:23:21.17 0.1 undecidable manual P 335 25.1526 50 0.7 82
IV.GAVE.EHE. 2019-07-27T23:23:21.28 0.3 undecidable manual P 209 31.4463 50 -0.16 71
IV.ASSB.HHN. 2019-07-27T23:23:21.79 0.3 undecidable manual P 288 35.9418 50 -0.34 67
IV.MTRA.EHE. 2019-07-27T23:23:21.31 0.3 undecidable manual P 128 32.9448 50 -0.36 67
IV.SAP2.EHE. 2019-07-27T23:23:21.52 0.6 undecidable manual P 56 31.2465 50 0.12 47
IV.MF5.EHZ. 2019-07-27T23:23:21.42 0.3 undecidable manual P 80 31.3464 50 -0.01 73
IV.SNTG.HHE. 2019-07-27T23:23:21.92 0.6 undecidable manual P 342 36.5412 50 -0.31 45
IV.CESI.HHZ. 2019-07-27T23:23:21.95 0.3 undecidable manual S 297 15.7731 124 0.23 71
IV.MC2.EHZ. 2019-07-27T23:23:20.40 0.3 undecidable manual S 110 9.5793 138 0.33 71
IV.GUMA.HHZ. 2019-07-27T23:23:20.40 0.3 undecidable manual P 57 24.753 50 -0.02 73
IV.FDMO.HHZ. 2019-07-27T23:23:20.38 0.3 undecidable manual S 4 10.5783 135 0.06 75
IV.NRCA.HHZ. 2019-07-27T23:23:20.74 0.3 undecidable manual S 166 12.2766 131 0 75
IT.MTCL.HGZ. 2019-07-27T23:23:20.05 0.3 undecidable manual S 312 8.6802 141 0.17 73
IV.MMO1.EHZ. 2019-07-27T23:23:19.39 0.1 undecidable manual P 103 20.6682 117 -0.38 91
IV.MML1.EHE. 2019-07-27T23:23:19.60 0.1 undecidable manual P 336 20.9679 117 -0.23 94
IV.PF6.EHE. 2019-07-27T23:23:19.82 0.1 undecidable manual P 23 23.754 50 -0.44 90
IT.MTCL.HGZ. 2019-07-27T23:23:18.00 0.1 negative manual P 312 8.6802 141 0.13 98
IV.CESI.HHZ. 2019-07-27T23:23:18.96 0.1 undecidable manual P 297 15.7731 124 0.03 99
IV.MC2.EHZ. 2019-07-27T23:23:18.15 0.1 positive manual P 110 9.5793 138 0.17 97
IV.FDMO.HHZ. 2019-07-27T23:23:18.16 0.1 undecidable manual P 4 10.5783 135 0.03 100
IV.NRCA.HHZ. 2019-07-27T23:23:18.39 0.1 positive manual P 166 12.2766 131 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.8 0.0007260689 0.1408 AML other m 2019-07-27T23:23:20.55
IV.FDMO.HHN. ML:1.8 0.0007622011499999999 0.128 AML other m 2019-07-27T23:23:20.69
IV.NRCA.HHE. ML:1.8 0.0007508288 0.1408 AML other m 2019-07-27T23:23:20.84
IV.NRCA.HNE. ML:1.8 0.00066936565 0.1408 AML other m 2019-07-27T23:23:20.84
IV.NRCA.HHN. ML:1.8 0.00074261055 0.128 AML other m 2019-07-27T23:23:20.89
IV.NRCA.HNN. ML:1.8 0.00066677915 0.128 AML other m 2019-07-27T23:23:20.89
IV.CESI.HNE. ML:1.2 0.000136266255 1.7952 AML other m 2019-07-27T23:23:21.96
IV.CESI.HHN. ML:1.3 0.0001829992 0.0768 AML other m 2019-07-27T23:23:22.35
IV.CESI.HHE. ML:1.2 0.0001579142 0.0896 AML other m 2019-07-27T23:23:22.36
IV.MF5.EHN. ML:1.4 0.00011701007 1.0368 AML other m 2019-07-27T23:23:27.08
IV.MF5.EHE. ML:1.5 0.00013522535 1.4208 AML other m 2019-07-27T23:23:27.88
IV.LNSS.HHN. ML:1.2 0.000054963044499999994 0.128 AML other m 2019-07-27T23:23:28.53
IV.LNSS.HNN. ML:1.7 0.0001856181 0.4736 AML other m 2019-07-27T23:23:28.36
IV.LNSS.HHE. ML:1.2 0.000052717995000000005 0.2176 AML other m 2019-07-27T23:23:29.08
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