Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 25-09-2016 and time 02:39:12 (Italy) in region 6 km NE Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 6 km NE Norcia (PG), on

  • 25-09-2016 00:39:12 (UTC)
  • 25-09-2016 02:39:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8310, 13.1540 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 6 4957 4957
Castelsantangelo sul Nera MC 7 281 5238
Preci PG 11 724 5962
Visso MC 12 1107 7069
Ussita MC 13 444 7513
Arquata del Tronto AP 13 1178 8691
Montegallo AP 15 523 9214
Montemonaco AP 16 604 9818
Cascia PG 17 3217 13035
Accumoli RI 17 667 13702
Bolognola MC 19 142 13844
Cerreto di Spoleto PG 19 1075 14919
Sellano PG 20 1079 15998
Montefortino FM 20 1178 17176

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
49 Km W of Teramo (54892 inhabitants)
51 Km NE of Terni (111501 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
99 Km NW of Chieti (51815 inhabitants)
99 Km NE of Guidonia Montecelio (88673 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
Reviewed
Rev100 		ML 1.1 2016-09-25
00:39:12		 42.831 13.1538 9 2016-09-25
00:47:38		 Sala Sismica INGV-Roma 29497711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-25 00:39:12 ± 0.08
Latitude 42.8310 ± 0.0027
Longitude 13.1538 ± 0.0037
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 29497711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 20
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26710
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 1
Type of magnitude ML
Reference to an origin 29497711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-25 00:47:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2016-09-25T00:39:23.29 0.1 undecidable manual S 8 29.2485 106 0.01 96
IV.T1243.HHE. 2016-09-25T00:39:22.69 0.3 undecidable manual S 122 28.2495 107 -0.27 68
IV.LNSS.HHE. 2016-09-25T00:39:22.58 0.6 undecidable manual S 200 26.9508 108 0.05 48
IV.T1299.HNZ. 2016-09-25T00:39:21.95 0.3 undecidable manual S 154 24.2535 110 0.32 68
IV.T1217.HNE. 2016-09-25T00:39:21.07 0.6 undecidable manual S 234 22.4553 111 0.02 48
IV.T1241.HHE. 2016-09-25T00:39:21.14 0.6 undecidable manual S 83 22.755 111 -0.01 49
IV.T1215.HNE. 2016-09-25T00:39:21.21 0.6 undecidable manual S 262 23.4543 110 -0.17 47
IV.T1202.EHZ. 2016-09-25T00:39:19.19 0.1 undecidable manual S 158 15.2736 120 0.39 91
IV.MMO1.EHZ. 2016-09-25T00:39:19.04 0.1 undecidable manual S 62 15.9729 118 0.03 98
IV.GUMA.HHN. 2016-09-25T00:39:19.00 0.1 undecidable manual P 30 29.6481 106 0.11 94
IV.SMA1.EHZ. 2016-09-25T00:39:18.36 0.1 undecidable manual P 146 26.751 108 0.03 96
IV.LNSS.HHE. 2016-09-25T00:39:18.22 0.1 undecidable manual P 200 26.9508 108 -0.16 93
IV.CSP1.EHZ. 2016-09-25T00:39:18.58 0.1 undecidable manual P 8 29.2485 106 -0.23 92
IV.T1243.HHE. 2016-09-25T00:39:18.86 0.1 undecidable manual P 122 28.2495 107 0.23 92
IV.CESI.HHN. 2016-09-25T00:39:18.78 0.1 undecidable manual P 314 27.9498 107 0.21 92
IV.T1215.HNE. 2016-09-25T00:39:17.81 0.1 undecidable manual P 262 23.4543 110 0.1 95
XO.AM05.HNN. 2016-09-25T00:39:17.29 0.1 undecidable manual P 45 22.9548 111 -0.32 91
IV.T1204.EHN. 2016-09-25T00:39:17.14 0.1 undecidable manual P 142 21.7671 112 -0.25 92
IV.MC2.EHZ. 2016-09-25T00:39:17.56 0.1 undecidable manual S 18 9.3795 133 0.43 91
IV.T1299.HNZ. 2016-09-25T00:39:17.95 0.1 undecidable manual P 154 24.2535 110 0.09 95
IV.T1217.HNE. 2016-09-25T00:39:17.19 0.1 undecidable manual P 234 22.4553 111 -0.33 91
IV.T1241.HHE. 2016-09-25T00:39:17.23 0.1 undecidable manual P 83 22.755 111 -0.35 90
IV.FDMO.HHZ. 2016-09-25T00:39:17.55 0.1 undecidable manual P 347 23.4543 110 -0.16 94
IV.T1202.EHZ. 2016-09-25T00:39:16.34 0.1 undecidable manual P 158 15.2736 120 0.11 96
IV.MMO1.EHZ. 2016-09-25T00:39:16.34 0.1 undecidable manual P 62 15.9729 118 -0.01 98
IV.VIVA.HHZ. 2016-09-25T00:39:16.81 3.0 undecidable manual P 0.01 0
IV.FEMA.HNE. 2016-09-25T00:39:16.76 0.1 undecidable manual P 330 16.7721 117 0.26 93
IV.MC2.EHZ. 2016-09-25T00:39:15.51 0.1 undecidable manual P 18 9.3795 133 0.25 94
IV.NRCA.HHZ. 2016-09-25T00:39:15.61 0.1 undecidable manual S 275 3.1968 160 -0.3 94
IV.T1216.EHZ. 2016-09-25T00:39:15.87 0.1 undecidable manual P 301 12.7761 124 0.07 98
IV.T1242.HHZ. 2016-09-25T00:39:15.77 0.1 undecidable manual S 93 4.0959 155 -0.26 95
IV.NRCA.HHZ. 2016-09-25T00:39:14.58 0.1 undecidable manual P 275 3.1968 160 0.02 100
IV.T1242.HHZ. 2016-09-25T00:39:14.66 0.1 undecidable manual P 93 4.0959 155 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:1.2 0.00008000000000000002 1.58 AML other m 2016-09-25T00:40:11.77
IV.CSP1.EHE. ML:1.1 0.00005999999999999997 1.58 AML other m 2016-09-25T00:40:19.23
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