Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 26-09-2016 and time 02:37:41 (UTC) in region 5 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 5 km E Norcia (PG), on

  • 26-09-2016 02:37:41 (UTC)
  • 26-09-2016 04:37:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7740, 13.1530 at 12 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 5 4957 4957
Accumoli RI 12 667 5624
Arquata del Tronto AP 12 1178 6802
Cascia PG 13 3217 10019
Castelsantangelo sul Nera MC 13 281 10300
Preci PG 15 724 11024
Montegallo AP 17 523 11547
Cittareale RI 17 482 12029
Visso MC 18 1107 13136
Ussita MC 19 444 13580
Poggiodomo PG 19 117 13697
Amatrice RI 20 2657 16354
Cerreto di Spoleto PG 20 1075 17429
Montemonaco AP 20 604 18033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Pescara (121014 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
96 Km NW of Chieti (51815 inhabitants)
98 Km SW 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 1.7 2016-09-26
02:37:41		 42.7745 13.1533 12 2019-07-19
13:23:09		 Bollettino Sismico Italiano INGV 33379121
Reviewed
Rev100 		ML 1.7 2016-09-26
02:37:41		 42.7723 13.1525 12 2016-09-26
02:47:05		 Sala Sismica INGV-Roma 29538791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-26 02:37:41 ± 0.03
Latitude 42.7745 ± 0.0018
Longitude 13.1533 ± 0.0025
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 33379121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 260
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.06565
Epicentral distance of station farthest from the epicenter (degree) 0.44516
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 33379121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-12-21 10:29:52

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 29538791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-26 02:47:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIGS.HHZ. 2016-09-26T02:37:56.50 0.6 undecidable manual S 136 49.4172 92 -0.35 44
IV.TERO.HHZ. 2016-09-26T02:37:54.30 0.3 undecidable manual S 114 40.4262 92 -0.14 69
IV.T1247.HHZ. 2016-09-26T02:37:54.34 0.6 undecidable manual S 162 38.8278 92 0.33 44
IV.CSP1.EHZ. 2016-09-26T02:37:53.21 0.3 undecidable manual S 7 35.4423 93 0.09 71
IV.T1246.HHN. 2016-09-26T02:37:53.05 0.1 undecidable manual S 127 34.8429 93 0.08 94
IV.CAMP.HHE. 2016-09-26T02:37:52.22 0.1 undecidable manual S 142 33.744 93 -0.43 88
IV.RM33.EHZ. 2016-09-26T02:37:51.71 0.6 undecidable manual S 170 29.8479 94 0.08 47
XO.AM05.EHZ. 2016-09-26T02:37:51.04 0.6 undecidable manual S 36 27.75 94 -0.02 48
IV.FDMO.HHZ. 2016-09-26T02:37:51.45 0.6 undecidable manual S 350 29.5482 94 -0.1 47
IV.T1243.HHZ. 2016-09-26T02:37:50.09 0.6 undecidable manual S 110 25.5522 95 -0.39 45
IV.GIGS.HHZ. 2016-09-26T02:37:50.50 0.1 undecidable manual P 136 49.4172 92 0.27 88
IV.LNSS.HHZ. 2016-09-26T02:37:49.40 0.3 undecidable manual S 206 21.1677 98 0.09 72
IV.T1241.HHZ. 2016-09-26T02:37:49.97 0.3 undecidable manual S 68 24.3534 96 -0.19 70
IV.SMA1.EHZ. 2016-09-26T02:37:49.33 0.3 undecidable manual S 137 21.7671 97 -0.16 72
IV.T1215.EHZ. 2016-09-26T02:37:49.80 0.1 undecidable manual S 278 23.3544 96 -0.11 95
IV.T1217.EHZ. 2016-09-26T02:37:48.79 0.3 undecidable manual S 249 19.3695 99 -0.06 72
IV.T1299.HNN. 2016-09-26T02:37:48.88 0.1 undecidable manual S 146 18.7701 100 0.19 94
IV.T1216.EHZ. 2016-09-26T02:37:48.08 0.3 undecidable manual S 320 16.872 104 -0.12 72
IV.T1204.EHZ. 2016-09-26T02:37:48.10 0.3 undecidable manual S 129 17.1717 103 -0.18 72
IV.TERO.HHZ. 2016-09-26T02:37:48.62 0.1 positive manual P 114 40.4262 92 -0.22 91
IV.T1247.HHZ. 2016-09-26T02:37:48.30 0.1 undecidable manual P 162 38.8278 92 -0.29 89
IV.MC2.EHZ. 2016-09-26T02:37:48.15 0.1 undecidable manual S 11 15.4734 107 0.32 93
IV.MMO1.EHZ. 2016-09-26T02:37:48.87 0.3 undecidable manual S 45 19.7691 99 -0.08 73
IV.GUMA.HHZ. 2016-09-26T02:37:48.38 0.1 positive manual P 25 35.2425 93 0.34 90
IV.CSP1.EHZ. 2016-09-26T02:37:48.09 0.1 positive manual P 7 35.4423 93 0.01 95
IV.FDMO.HHZ. 2016-09-26T02:37:47.05 0.1 positive manual P 350 29.5482 94 -0.12 94
IV.CESI.HHE. 2016-09-26T02:37:47.70 0.1 positive manual P 322 32.5452 93 0.06 96
IV.RM33.EHZ. 2016-09-26T02:37:47.10 0.1 positive manual P 170 29.8479 94 -0.12 94
IV.T1246.HHN. 2016-09-26T02:37:47.81 0.1 positive manual P 127 34.8429 93 -0.18 92
IV.CAMP.HHE. 2016-09-26T02:37:47.85 0.1 positive manual P 142 33.744 93 0.04 95
IV.T1215.EHZ. 2016-09-26T02:37:46.21 0.1 positive manual P 278 23.3544 96 -0.01 97
IV.SMA1.EHZ. 2016-09-26T02:37:46.00 0.1 undecidable manual P 137 21.7671 97 0.02 97
IV.T1202.EHZ. 2016-09-26T02:37:46.78 0.1 undecidable manual S 144 9.7791 128 0.29 93
IV.T1243.HHZ. 2016-09-26T02:37:46.38 0.1 positive manual P 110 25.5522 95 -0.17 94
XO.AM05.EHZ. 2016-09-26T02:37:46.99 0.1 positive manual P 36 27.75 94 0.1 95
IV.T1241.HHZ. 2016-09-26T02:37:46.32 0.1 positive manual P 68 24.3534 96 -0.05 96
IV.MC2.EHZ. 2016-09-26T02:37:45.18 0.1 positive manual P 11 15.4734 107 0.16 96
IV.T1216.EHZ. 2016-09-26T02:37:45.23 0.1 negative manual P 320 16.872 104 -0.01 98
IV.T1217.EHZ. 2016-09-26T02:37:45.63 0.1 positive manual P 249 19.3695 99 0.02 98
IV.T1299.HNN. 2016-09-26T02:37:45.70 0.1 undecidable manual P 146 18.7701 100 0.18 95
IV.LNSS.HHZ. 2016-09-26T02:37:45.93 0.1 positive manual P 206 21.1677 98 0.05 97
IV.NRCA.HNZ. 2016-09-26T02:37:45.67 0.1 undecidable manual S 334 7.2927 140 -0.33 94
IV.MMO1.EHZ. 2016-09-26T02:37:45.66 0.1 positive manual P 45 19.7691 99 -0.01 98
IV.T1242.HHZ. 2016-09-26T02:37:45.98 0.1 undecidable manual S 34 7.3815 139 -0.04 100
IV.T1204.EHZ. 2016-09-26T02:37:45.41 0.1 positive manual P 129 17.1717 103 0.12 96
IV.T1242.HHZ. 2016-09-26T02:37:44.15 0.1 undecidable manual P 34 7.3815 139 0.17 96
IV.T1202.EHZ. 2016-09-26T02:37:44.49 0.1 positive manual P 144 9.7791 128 0.24 95
IV.NRCA.HNZ. 2016-09-26T02:37:44.03 0.1 negative manual P 334 7.2927 140 0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XO.AM05.EHN. ML:1.6 0.0001785 0.1 AML other m 2016-09-26T02:37:52.15
XO.AM05.EHE. ML:1.4 0.000132 1.04 AML other m 2016-09-26T02:37:53.84
IV.GUMA.HHE. ML:1.8 0.00022799999999999999 0.28 AML other m 2016-09-26T02:37:54.35
IV.GUMA.HHN. ML:1.5 0.000136 0.24 AML other m 2016-09-26T02:37:54.31
IV.LNSS.HHE. ML:1.6 0.00029200000000000005 0.18 AML other m 2016-09-26T02:37:49.71
IV.LNSS.HHN. ML:1.8 0.0003735 0.12 AML other m 2016-09-26T02:37:49.68
IV.NRCA.HHN. ML:2.1 0.0014750000000000002 0.14 AML other m 2016-09-26T02:37:45.85
IV.NRCA.HHE. ML:2.0 0.0011884999999999999 0.14 AML other m 2016-09-26T02:37:45.84
IV.SMA1.EHN. ML:1.2 0.00010300000000000001 0.68 AML other m 2016-09-26T02:37:52.45
IV.SMA1.EHE. ML:1.2 0.00010170000000000002 0.16 AML other m 2016-09-26T02:37:51.35
IV.T1202.EHE. ML:1.9 0.0009130000000000001 0.12 AML other m 2016-09-26T02:37:46.93
IV.T1202.EHN. ML:2.1 0.0013315000000000002 0.78 AML other m 2016-09-26T02:37:47.27
IV.T1242.HHE. ML:1.8 0.0008545 0.34 AML other m 2016-09-26T02:37:46.34
IV.T1242.HHN. ML:2.1 0.00158 0.16 AML other m 2016-09-26T02:37:46.49
IV.TERO.HHN. ML:1.4 0.00008185 0.36 AML other m 2016-09-26T02:37:54.75
IV.TERO.HHE. ML:1.3 0.0000697 0.34 AML other m 2016-09-26T02:37:55.00
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