Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 24-08-2016 and time 05:06:38 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 2.5 earthquake occured in region: 7 km E Norcia (PG), on

  • 24-08-2016 03:06:38 (UTC)
  • 24-08-2016 05:06:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7790, 13.1780 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
Norcia PG 7 4957 4957
Arquata del Tronto AP 10 1178 6135
Accumoli RI 11 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Montegallo AP 15 523 7606
Cascia PG 15 3217 10823
Preci PG 16 724 11547
Cittareale RI 18 482 12029
Montemonaco AP 18 604 12633
Visso MC 18 1107 13740
Ussita MC 19 444 14184
Amatrice RI 19 2657 16841
Acquasanta Terme AP 19 2916 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
97 Km S of Ancona (100861 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 2.5 2016-08-24
03:06:38		 42.7792 13.1783 10 2016-10-06
10:10:59		 Bollettino Sismico Italiano INGV 29234771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-24 03:06:38 ± 0.11
Latitude 42.7792 ± 0.0045
Longitude 13.1783 ± 0.0098
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 29234771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 778
Semi-minor axis of confidence ellipse (meter) 410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.46225
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 29234771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-09-19 13:26:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHN. 2016-08-24T03:06:55.48 0.6 undecidable manual S 305 51.3153 50 0.09 47
IV.ARRO.EHZ. 2016-08-24T03:06:52.71 0.6 undecidable manual S 237 40.3263 50 0.26 46
IV.GUMA.HHZ. 2016-08-24T03:06:51.48 0.6 undecidable manual S 22 33.9438 50 0.74 40
IV.CESI.HHE. 2016-08-24T03:06:50.44 0.6 undecidable manual S 318 33.4443 50 -0.19 47
IV.CSP1.EHZ. 2016-08-24T03:06:50.83 0.6 undecidable manual S 4 34.743 50 -0.13 48
IV.FDMO.HHZ. 2016-08-24T03:06:49.19 0.6 undecidable manual S 345 29.4483 50 -0.37 46
IV.RM33.HNE. 2016-08-24T03:06:49.57 0.6 undecidable manual S 174 30.1476 50 -0.16 48
IV.ASSB.HHN. 2016-08-24T03:06:48.72 0.3 undecidable manual P 305 51.3153 50 0.26 68
IV.FEMA.HNZ. 2016-08-24T03:06:47.52 0.6 undecidable manual S 333 22.8549 114 -0.09 49
IV.ARRO.EHZ. 2016-08-24T03:06:46.89 0.3 undecidable manual P 237 40.3263 50 0.13 71
IV.CSP1.EHZ. 2016-08-24T03:06:45.74 0.3 undecidable manual P 4 34.743 50 -0.16 71
IV.GUMA.HHZ. 2016-08-24T03:06:45.90 0.3 undecidable manual P 22 33.9438 50 0.13 72
IV.CESI.HHE. 2016-08-24T03:06:45.62 0.3 undecidable manual P 318 33.4443 50 -0.08 72
IV.RM33.HNE. 2016-08-24T03:06:44.83 0.6 undecidable manual P 174 30.1476 50 -0.35 46
IV.FDMO.HHZ. 2016-08-24T03:06:44.82 0.3 undecidable manual P 345 29.4483 50 -0.26 70
IV.FEMA.HNZ. 2016-08-24T03:06:44.14 0.3 undecidable manual P 333 22.8549 114 0.18 72
IV.NRCA.HNZ. 2016-08-24T03:06:43.16 0.6 undecidable manual S 319 7.9809 141 -0.23 49
IV.NRCA.HNZ. 2016-08-24T03:06:41.65 0.1 undecidable manual P 319 7.9809 141 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.2 0.00049353785 2.84 AML other m 2016-08-24T03:06:55.14
IV.FDMO.HHN. ML:2.2 0.0008189881999999999 1.52 AML other m 2016-08-24T03:06:51.23
IV.GUMA.HHN. ML:2.8 0.0024280309999999998 0.56 AML other m 2016-08-24T03:06:52.37
IV.GUMA.HHE. ML:2.7 0.0022754935 1.8416 AML other m 2016-08-24T03:06:54.46
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
Waveforms Seismic signals in miniseed + resp format Download