Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 24-08-2016 and time 18:50:03 (Italy) in region 1 km NW Preci (PG)

A magnitude ML 2.1 earthquake occured in region: 1 km NW Preci (PG), on

  • 24-08-2016 16:50:03 (UTC)
  • 24-08-2016 18:50:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8850, 13.0360 at 17 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 7 1107 1831
Sellano PG 9 1079 2910
Castelsantangelo sul Nera MC 10 281 3191
Ussita MC 11 444 3635
Norcia PG 11 4957 8592
Cerreto di Spoleto PG 12 1075 9667
Monte Cavallo MC 13 145 9812
Fiordimonte MC 18 202 10014
Pieve Torina MC 18 1458 11472
Cascia PG 19 3217 14689
Vallo di Nera PG 19 364 15053
Fiastra MC 20 559 15612
Acquacanina MC 20 121 15733
Bolognola MC 20 142 15875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
58 Km E of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
92 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 2.1 2016-08-24
16:50:03		 42.8847 13.036 17 2019-02-12
13:57:25		 Bollettino Sismico Italiano INGV 37273131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-24 16:50:03 ± 0.1
Latitude 42.8847 ± 0.0036
Longitude 13.0360 ± 0.0110
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 37273131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 857
Semi-minor axis of confidence ellipse (meter) 126
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.07644
Epicentral distance of station farthest from the epicenter (degree) 0.58456
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 37273131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-12-20 14:01:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LNSS.HHZ. 2016-08-24T16:50:14.91 0.3 undecidable manual S 179 31.2465 108 0.03 73
IV.GIGS.HHZ. 2016-08-24T16:50:14.98 0.3 undecidable manual P 137 64.8906 97 -0.3 65
IV.TERO.HHZ. 2016-08-24T16:50:13.78 0.3 undecidable manual P 122 54.6009 99 0.07 69
IV.CSP1.EHZ. 2016-08-24T16:50:13.83 0.6 undecidable manual S 31 26.751 112 0.08 49
IV.CAMP.HHE. 2016-08-24T16:50:12.74 0.3 undecidable manual P 142 49.2174 100 -0.15 69
IV.RM33.EHZ. 2016-08-24T16:50:12.40 0.1 undecidable manual P 161 44.1225 101 0.28 90
IV.CESI.HHZ. 2016-08-24T16:50:11.71 0.3 undecidable manual S 321 17.0718 127 0.22 73
IV.T1243.HHZ. 2016-08-24T16:50:11.40 0.3 undecidable manual P 122 39.5271 103 -0.03 72
IV.FDMO.HHZ. 2016-08-24T16:50:11.19 0.3 undecidable manual S 14 17.3715 126 -0.35 70
IV.SNTG.HHZ. 2016-08-24T16:50:11.42 0.3 undecidable manual P 349 41.8248 102 -0.34 67
IV.GUMA.HHZ. 2016-08-24T16:50:10.40 0.1 undecidable manual P 51 31.3464 108 0.2 94
IV.NRCA.HNZ. 2016-08-24T16:50:10.02 0.3 undecidable manual S 132 8.4804 149 0.08 76
IV.LNSS.HHZ. 2016-08-24T16:50:10.00 0.3 undecidable manual P 179 31.2465 108 -0.2 71
IV.CSP1.EHZ. 2016-08-24T16:50:09.58 0.3 undecidable manual P 31 26.751 112 0.04 73
IV.CESI.HHZ. 2016-08-24T16:50:08.45 0.1 undecidable manual P 321 17.0718 127 0.21 97
IV.FDMO.HHZ. 2016-08-24T16:50:08.30 0.1 undecidable manual P 14 17.3715 126 0.03 100
IV.NRCA.HNZ. 2016-08-24T16:50:07.25 0.1 undecidable manual P 132 8.4804 149 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.3 0.0001285 0.22 AML other m 2016-08-24T16:50:12.11
IV.LNSS.HHE. ML:2.2 0.0007270000000000001 0.22 AML other m 2016-08-24T16:50:15.14
IV.NRCA.HHE. ML:2.6 0.00342 0.06 AML other m 2016-08-24T16:50:10.08
IV.RM33.HNE. ML:1.8 0.0033599999999999997 1.74 AML other m 2016-08-24T16:51:24.04
IV.T1243.HHE. ML:2.2 0.000519 0.24 AML other m 2016-08-24T16:50:34.63
IV.T1243.HHN. ML:2.3 0.0006314999999999999 0.28 AML other m 2016-08-24T16:50:15.53
IV.TERO.HHN. ML:1.5 0.00007253133000000001 0.2816 AML other m 2016-08-24T16:50:19.89
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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