Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 23-09-2016 and time 01:18:59 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 8 km E Norcia (PG), on

  • 22-09-2016 23:18:59 (UTC)
  • 23-09-2016 01:18:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8130, 13.1940 at 11 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 8 4957 4957
Arquata del Tronto AP 10 1178 6135
Castelsantangelo sul Nera MC 10 281 6416
Montegallo AP 12 523 6939
Accumoli RI 14 667 7606
Montemonaco AP 15 604 8210
Preci PG 15 724 8934
Ussita MC 15 444 9378
Visso MC 16 1107 10485
Cascia PG 18 3217 13702
Acquasanta Terme AP 18 2916 16618
Montefortino FM 19 1178 17796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
53 Km NE of Terni (111501 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km S of Ancona (100861 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
100 Km NE of Tivoli (56533 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 		Md 1.6
ML 1.2 		2016-09-22
23:18:59		 42.8132 13.1935 11 2016-09-22
23:23:23		 Sala Sismica INGV-Roma 29396891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-22 23:18:59 ± 0.04
Latitude 42.8132 ± 0.0036
Longitude 13.1935 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 29396891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 413
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 314
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37951
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 29396891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-22 23:23:23

Md:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 2
Type of magnitude Md
Reference to an origin 29396891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-22 23:23:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SAMA.HHZ. 2016-09-22T23:19:34.99 3.0 undecidable manual S -1.42 0
IV.GIGS.HHZ. 2016-09-22T23:19:08.17 3.0 undecidable manual P -0.26 0
IV.ARRO.EHZ. 2016-09-22T23:19:07.25 3.0 undecidable manual P -0.03 0
IV.T1243.HHZ. 2016-09-22T23:19:07.91 0.6 undecidable manual S 122 24.4533 91 -0.21 48
XO.AM05.EHZ. 2016-09-22T23:19:07.53 0.6 undecidable manual S 35 22.3554 91 -0.03 50
IV.T1247.HHZ. 2016-09-22T23:19:07.03 1.0 negative manual P 168 42.1245 90 -0.01 24
IV.TERO.HHZ. 2016-09-22T23:19:06.50 3.0 negative manual P -0.14 0
IV.T1241.HHZ. 2016-09-22T23:19:06.66 0.6 undecidable manual S 76 19.9689 91 -0.25 48
IV.RM33.EHZ. 2016-09-22T23:19:05.87 1.0 undecidable manual P 177 33.744 90 0.11 24
IV.CSP1.EHZ. 2016-09-22T23:19:05.27 3.0 negative manual P -0.01 0
IV.GUMA.HHZ. 2016-09-22T23:19:05.51 3.0 undecidable manual P 0.38 0
IV.MMO1.EHZ. 2016-09-22T23:19:05.36 0.6 undecidable manual S 49 14.4744 97 -0.09 50
IV.T1216.EHZ. 2016-09-22T23:19:05.73 0.6 undecidable manual S 301 16.5723 93 -0.29 46
IV.CAMP.HHZ. 2016-09-22T23:19:05.92 0.1 negative manual P 150 35.4423 90 -0.09 97
IV.CESI.HHZ. 2016-09-22T23:19:05.30 3.0 negative manual P -0.1 0
IV.T1243.HHZ. 2016-09-22T23:19:04.26 1.0 undecidable manual P 122 24.4533 91 -0.06 25
XO.AM05.EHZ. 2016-09-22T23:19:04.08 0.3 positive manual P 35 22.3554 91 0.08 74
IV.MC2.EHZ. 2016-09-22T23:19:04.69 0.6 undecidable manual S 358 10.878 116 0.14 50
IV.FDMO.HHZ. 2016-09-22T23:19:04.42 3.0 negative manual P -0.12 0
IV.T1217.EHZ. 2016-09-22T23:19:04.26 3.0 positive manual P 0.09 0
IV.LNSS.HHZ. 2016-09-22T23:19:04.68 0.3 positive manual P 208 26.4513 91 0.05 74
IV.T1215.EHZ. 2016-09-22T23:19:04.52 3.0 positive manual P -0.03 0
IV.T1204.EHZ. 2016-09-22T23:19:03.51 0.6 negative manual P 147 18.2706 92 0.15 49
IV.T1241.HHZ. 2016-09-22T23:19:03.62 0.6 positive manual P 76 19.9689 91 0 50
IV.NRCA.HHZ. 2016-09-22T23:19:03.50 0.6 undecidable manual S 289 6.7932 138 -0.18 50
IV.T1216.EHZ. 2016-09-22T23:19:02.99 1.0 undecidable manual P 301 16.5723 93 -0.12 24
IV.MC2.EHZ. 2016-09-22T23:19:02.47 0.3 negative manual P 358 10.878 116 0.21 73
IV.MMO1.EHZ. 2016-09-22T23:19:02.83 0.1 positive manual P 49 14.4744 97 0.05 100
IV.NRCA.HHZ. 2016-09-22T23:19:01.88 0.1 negative manual P 289 6.7932 138 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XO.AM05.EHE. ML:1.1 0.00008735 1.26 AML other m 2016-09-22T23:19:07.75
XO.AM05.EHN. ML:1.3 0.000122 0.6 AML other m 2016-09-22T23:19:08.06
IV.CESI.HHE. ML:1.0 0.0000494 1.26 AML other m 2016-09-22T23:19:10.86
IV.CESI.HHN. ML:1.2 0.00007915 0.56 AML other m 2016-09-22T23:19:10.45
IV.FDMO.HHN. ML:0.9 0.00004125 0.6 AML other m 2016-09-22T23:19:09.02
IV.FDMO.HHE. ML:0.8 0.00003695 0.16 AML other m 2016-09-22T23:19:09.84
IV.GUMA.HHN. ML:1.7 0.000252 0.66 AML other m 2016-09-22T23:19:10.98
IV.GUMA.HHE. ML:2.0 0.0004325 0.26 AML other m 2016-09-22T23:19:10.55
IV.LNSS.HHN. ML:1.3 0.00009779999999999999 1.38 AML other m 2016-09-22T23:19:09.08
IV.LNSS.HHE. ML:1.4 0.0001245 0.76 AML other m 2016-09-22T23:19:09.35
IV.NRCA.HHN. ML:1.8 0.0009235 0.78 AML other m 2016-09-22T23:19:04.20
IV.NRCA.HHE. ML:1.6 0.000625 0.9 AML other m 2016-09-22T23:19:03.83
IV.T1241.HHN. ML:0.9 0.0000617 1.32 AML other m 2016-09-22T23:19:06.82
IV.T1241.HHE. ML:0.8 0.000050350000000000004 1.56 AML other m 2016-09-22T23:19:07.94
IV.T1247.HHN. ML:1.2 0.000049850000000000006 0.48 AML other m 2016-09-22T23:19:13.93
IV.T1247.HHE. ML:1.3 0.00006395000000000001 1.08 AML other m 2016-09-22T23:19:15.11
IV.TERO.HHN. ML:1.2 0.00005824999999999999 0.88 AML other m 2016-09-22T23:19:12.60
IV.TERO.HHE. ML:1.2 0.000050600000000000003 0.32 AML other m 2016-09-22T23:19:13.65
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