Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-08-2016 and time 12:36:27 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 6 km E Norcia (PG), on

  • 26-08-2016 10:36:27 (UTC)
  • 26-08-2016 12:36:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7830, 13.1720 at 11 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 12 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 15 3217 10300
Montegallo AP 15 523 10823
Preci PG 15 724 11547
Visso MC 18 1107 12654
Ussita MC 18 444 13098
Montemonaco AP 18 604 13702
Cittareale RI 18 482 14184
Acquasanta Terme AP 20 2916 17100
Amatrice RI 20 2657 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
49 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
97 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 1.6 2016-08-26
10:36:27		 42.7833 13.1718 11 2019-02-12
13:57:31		 Bollettino Sismico Italiano INGV 40309381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-26 10:36:27 ± 0.05
Latitude 42.7833 ± 0.0027
Longitude 13.1718 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 40309381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 376
Semi-minor axis of confidence ellipse (meter) 207
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.54769
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 40309381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-02-01 15:45:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.OSSC.HHZ. 2016-08-26T10:37:20.99 3.0 undecidable manual Sg 6.37 0
IV.LAV9.HNZ. 2016-08-26T10:37:02.99 3.0 undecidable manual S -0.8 0
IV.RCAV.EHZ. 2016-08-26T10:36:57.99 3.0 undecidable manual S -0.66 0
IV.FAGN.HHZ. 2016-08-26T10:36:45.99 3.0 undecidable manual S -3.27 0
IV.TERO.HHZ. 2016-08-26T10:36:40.47 0.3 undecidable manual S 117 39.4272 50 -0.14 69
IV.CSP1.EHZ. 2016-08-26T10:36:39.32 0.3 undecidable manual S 4 34.3434 50 0.09 71
IV.CESI.HHZ. 2016-08-26T10:36:38.89 0.3 undecidable manual S 319 32.745 50 0.06 71
IV.CAMP.HHE. 2016-08-26T10:36:38.87 0.6 undecidable manual S 145 33.6441 50 -0.17 46
IV.EL6.EHZ. 2016-08-26T10:36:38.48 0.3 undecidable manual P 355 60.7947 50 0.1 67
IV.RM33.EHZ. 2016-08-26T10:36:38.37 0.3 undecidable manual S 173 30.6471 50 0.12 71
IV.FDMO.HHZ. 2016-08-26T10:36:37.61 0.3 undecidable manual S 346 28.9488 50 -0.18 70
IV.SNTG.HHZ. 2016-08-26T10:36:37.58 0.3 undecidable manual P 340 55.5999 50 0 69
IV.LNSS.HHZ. 2016-08-26T10:36:36.15 0.3 undecidable manual S 208 22.755 50 0.01 73
IV.OFFI.HHZ. 2016-08-26T10:36:36.72 0.3 undecidable manual P 68 45.0216 50 0.77 57
IV.T1243.HHZ. 2016-08-26T10:36:36.47 0.6 undecidable manual S 113 24.5532 50 -0.14 47
IV.ASSB.HHZ. 2016-08-26T10:36:36.80 0.3 undecidable manual P 305 50.616 50 -0.01 70
IV.GIGS.HHZ. 2016-08-26T10:36:36.19 0.3 undecidable manual P 138 49.1175 50 -0.39 65
IV.TERO.HHZ. 2016-08-26T10:36:35.02 0.3 positive manual P 117 39.4272 50 -0.08 70
IV.ARRO.EHZ. 2016-08-26T10:36:35.40 0.3 undecidable manual P 236 40.1265 50 0.2 68
IV.FEMA.HNE. 2016-08-26T10:36:35.65 0.3 undecidable manual S 333 22.1556 50 -0.34 68
IV.CESI.HHZ. 2016-08-26T10:36:34.11 0.1 negative manual P 319 32.745 50 0.05 95
IV.CAMP.HHE. 2016-08-26T10:36:34.11 0.1 undecidable manual P 145 33.6441 50 -0.08 94
IV.MC2.EHZ. 2016-08-26T10:36:34.07 0.3 undecidable manual S 6 14.2746 127 0.3 70
IV.CSP1.EHZ. 2016-08-26T10:36:34.37 0.3 undecidable manual P 4 34.3434 50 0.07 71
IV.MMO1.EHZ. 2016-08-26T10:36:34.62 0.6 undecidable manual S 44 17.9709 121 -0.23 47
IV.FDMO.HHZ. 2016-08-26T10:36:33.44 0.6 positive manual P 346 28.9488 50 -0.02 48
IV.RM33.EHZ. 2016-08-26T10:36:33.83 0.3 undecidable manual P 173 30.6471 50 0.1 71
IV.LNSS.HHZ. 2016-08-26T10:36:32.58 0.1 positive manual P 208 22.755 50 0.07 96
IV.T1243.HHZ. 2016-08-26T10:36:32.93 0.3 undecidable manual P 113 24.5532 50 0.14 71
IV.FEMA.HNE. 2016-08-26T10:36:32.33 0.1 undecidable manual P 333 22.1556 50 -0.1 96
IV.MC2.EHZ. 2016-08-26T10:36:31.33 0.1 positive manual P 6 14.2746 127 0.18 96
IV.MMO1.EHZ. 2016-08-26T10:36:31.67 0.1 positive manual P 44 17.9709 121 -0.1 97
IV.NRCA.HNZ. 2016-08-26T10:36:31.74 0.3 undecidable manual S 320 7.2927 146 -0.34 70
IV.NRCA.HNZ. 2016-08-26T10:36:30.19 0.1 undecidable manual P 320 7.2927 146 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.6 0.00016299999999999998 0.1 AML other m 2016-08-26T10:36:39.09
IV.CESI.HHN. ML:2.0 0.0003985 0.32 AML other m 2016-08-26T10:36:39.18
IV.FDMO.HHN. ML:1.3 0.00011149999999999999 0.62 AML other m 2016-08-26T10:36:38.56
IV.LNSS.HHN. ML:1.9 0.0005435000000000001 0.12 AML other m 2016-08-26T10:36:36.58
IV.MMO1.EHE. ML:1.6 0.0002895 0.44 AML other m 2016-08-26T10:36:35.22
IV.RM33.EHE. ML:1.2 0.00008212548 0.4992 AML other m 2016-08-26T10:36:38.69
IV.TERO.HHE. ML:1.5 0.000098477855 0.3392 AML other m 2016-08-26T10:36:40.94
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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