Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 25-08-2016 and time 23:27:42 (UTC) in region 9 km W Arquata del Tronto (AP)

A magnitude ML 2.0 earthquake occured in region: 9 km W Arquata del Tronto (AP), on

  • 25-08-2016 23:27:42 (UTC)
  • 26-08-2016 01:27:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8040, 13.2010 at 8 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
Arquata del Tronto AP 9 1178 1178
Norcia PG 9 4957 6135
Castelsantangelo sul Nera MC 11 281 6416
Montegallo AP 12 523 6939
Accumoli RI 13 667 7606
Montemonaco AP 15 604 8210
Preci PG 16 724 8934
Ussita MC 17 444 9378
Visso MC 17 1107 10485
Acquasanta Terme AP 18 2916 13401
Cascia PG 18 3217 16618
Montefortino FM 19 1178 17796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
53 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
94 Km S of Ancona (100861 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km NE of Tivoli (56533 inhabitants)
99 Km E of Viterbo (67173 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 2.0 2016-08-25
23:27:42		 42.804 13.201 8 2019-02-12
13:57:24		 Bollettino Sismico Italiano INGV 35858511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-25 23:27:42 ± 0.05
Latitude 42.8040 ± 0.0027
Longitude 13.2010 ± 0.0049
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 35858511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 90
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 60
Number of defining phases 58
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.94699
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 37
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 18
Type of magnitude ML
Reference to an origin 35858511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-12-07 12:07:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2016-08-25T23:28:15.62 3.0 undecidable manual Pg 3.12 0
IV.VCEL.EHZ. 2016-08-25T23:28:05.30 0.6 undecidable manual S 131 69.1752 50 1 35
IV.CING.HHZ. 2016-08-25T23:28:03.50 0.6 undecidable manual S 360 63.3921 50 0.76 40
IV.FOSV.EHZ. 2016-08-25T23:28:03.40 0.6 undecidable manual S 327 65.0904 50 0.21 46
IV.EL6.EHZ. 2016-08-25T23:28:02.00 0.6 undecidable manual S 352 58.7967 50 0.48 44
IV.ATCC.EHZ. 2016-08-25T23:28:02.90 0.6 undecidable manual S 313 62.0934 50 0.5 44
IV.FIAM.HHZ. 2016-08-25T23:28:01.80 0.6 undecidable manual S 187 59.8956 50 0.01 49
IV.FSSB.HHZ. 2016-08-25T23:28:01.12 0.3 undecidable manual P 341 104.4177 50 0.56 59
IV.MGAB.HHZ. 2016-08-25T23:28:01.02 3.0 negative manual P 2.63 0
IV.MPAG.EHZ. 2016-08-25T23:28:00.15 0.6 undecidable manual P 339 98.2239 50 0.54 40
IV.INTR.HHZ. 2016-08-25T23:28:00.25 0.6 undecidable manual P 147 105.117 50 -0.42 41
IV.SNTG.HHZ. 2016-08-25T23:28:00.40 0.6 undecidable manual S 337 54.3012 50 0.09 49
IV.NARO.HHZ. 2016-08-25T23:28:00.20 0.6 undecidable manual P 331 102.6195 50 -0.08 44
IV.ASSB.HHZ. 2016-08-25T23:27:59.30 0.6 undecidable manual S 301 51.4152 50 -0.24 47
IV.GIGS.HHZ. 2016-08-25T23:27:58.60 0.6 undecidable manual S 142 49.3173 50 -0.39 46
IV.SRES.HHZ. 2016-08-25T23:27:58.08 0.6 undecidable manual P 222 84.5487 50 0.58 41
IV.FRON.EHZ. 2016-08-25T23:27:57.85 0.6 undecidable manual P 334 88.0452 50 -0.19 45
IV.ARRO.EHZ. 2016-08-25T23:27:57.50 0.6 undecidable manual S 235 43.4232 50 0.11 49
IV.ARVD.HHZ. 2016-08-25T23:27:56.76 0.6 undecidable manual P 345 79.7646 50 -0.01 47
IV.T0110.HHZ. 2016-08-25T23:27:56.47 0.6 undecidable manual P 143 79.2651 50 -0.21 45
IV.TERO.HHZ. 2016-08-25T23:27:55.60 0.3 undecidable manual S 121 38.5281 50 -0.49 69
IV.VCEL.EHZ. 2016-08-25T23:27:55.39 0.6 undecidable manual P 131 69.1752 50 0.25 46
IV.TRTR.HHZ. 2016-08-25T23:27:54.24 0.6 undecidable manual P 89 57.9975 50 0.83 39
IV.CAMP.HHZ. 2016-08-25T23:27:54.40 0.6 undecidable manual S 150 34.2435 103 -0.42 47
IV.FAGN.HHZ. 2016-08-25T23:27:54.87 0.6 undecidable manual P 152 67.377 50 0.01 48
IV.RM33.EHZ. 2016-08-25T23:27:54.40 0.6 undecidable manual S 178 32.745 103 0.09 51
IV.FOSV.EHZ. 2016-08-25T23:27:54.34 0.3 undecidable manual P 327 65.0904 50 -0.16 70
IV.CING.HHZ. 2016-08-25T23:27:53.96 0.3 undecidable manual P 360 63.3921 50 -0.28 69
IV.CSP1.EHZ. 2016-08-25T23:27:53.70 0.3 undecidable manual S 1 31.9458 104 -0.34 72
IV.EL6.EHZ. 2016-08-25T23:27:53.34 0.3 undecidable manual P 352 58.7967 50 -0.19 71
IV.FIAM.HHZ. 2016-08-25T23:27:53.46 0.6 undecidable manual P 187 59.8956 50 -0.23 47
IV.CESI.HHZ. 2016-08-25T23:27:53.90 0.6 undecidable manual S 313 32.8449 103 -0.44 47
IV.ATCC.EHZ. 2016-08-25T23:27:53.87 0.3 undecidable manual P 313 62.0934 50 -0.18 71
IV.ASSB.HHZ. 2016-08-25T23:27:52.06 0.3 undecidable manual P 301 51.4152 50 -0.33 70
IV.LNSS.HHZ. 2016-08-25T23:27:52.40 0.3 undecidable manual S 210 25.8519 107 0.39 72
IV.CESX.HHZ. 2016-08-25T23:27:52.69 0.6 undecidable manual P 247 54.6009 50 -0.19 48
IV.FDMO.HHZ. 2016-08-25T23:27:52.20 0.3 undecidable manual S 340 27.3504 106 -0.31 73
IV.SNTG.HHZ. 2016-08-25T23:27:52.55 0.3 undecidable manual P 337 54.3012 50 -0.29 70
IV.OFFI.HHZ. 2016-08-25T23:27:51.48 0.3 undecidable manual P 70 42.0246 50 0.53 67
IV.MNTP.HNZ. 2016-08-25T23:27:51.40 0.6 undecidable manual P 30 42.9237 50 0.31 47
IV.T1243.HHZ. 2016-08-25T23:27:51.20 0.6 undecidable manual S 121 23.4543 108 0.01 52
IV.GIGS.HHZ. 2016-08-25T23:27:51.77 0.3 undecidable manual P 142 49.3173 50 -0.3 70
IV.FEMA.HNZ. 2016-08-25T23:27:50.60 0.3 undecidable manual S 325 21.4674 110 0.06 78
IV.MDAR.HNN. 2016-08-25T23:27:50.91 0.6 undecidable manual P 354 43.4232 50 -0.25 48
IV.SEF1.HNN. 2016-08-25T23:27:50.24 0.6 undecidable manual P 332 43.2234 50 -0.89 39
IV.ARRO.EHZ. 2016-08-25T23:27:50.99 0.3 undecidable manual P 235 43.4232 50 -0.16 73
IV.TERO.HHZ. 2016-08-25T23:27:50.07 0.6 undecidable manual P 121 38.5281 50 -0.34 48
IV.GUMA.HHZ. 2016-08-25T23:27:49.10 0.3 undecidable manual P 21 30.747 104 0.12 76
IV.CAMP.HHZ. 2016-08-25T23:27:49.45 0.3 undecidable manual P 150 34.2435 103 -0.22 74
IV.CSP1.EHZ. 2016-08-25T23:27:49.01 0.3 undecidable manual P 1 31.9458 104 -0.21 74
IV.CESI.HHZ. 2016-08-25T23:27:49.22 0.3 undecidable manual P 313 32.8449 103 -0.17 75
IV.RM33.EHZ. 2016-08-25T23:27:49.40 0.6 undecidable manual P 178 32.745 103 0.02 51
IV.FDMO.HHZ. 2016-08-25T23:27:48.21 0.3 undecidable manual P 340 27.3504 106 -0.13 76
IV.LNSS.HHZ. 2016-08-25T23:27:48.39 0.3 undecidable manual P 210 25.8519 107 0.34 73
IV.FEMA.HNZ. 2016-08-25T23:27:47.44 0.1 undecidable manual P 325 21.4674 110 0.24 100
IV.T1243.HHZ. 2016-08-25T23:27:47.75 0.6 undecidable manual P 121 23.4543 108 0.17 51
IV.MC2.EHZ. 2016-08-25T23:27:47.70 0.6 undecidable manual S 355 11.9769 123 0.12 52
IV.NRCA.HNZ. 2016-08-25T23:27:46.40 0.6 undecidable manual S 295 7.7811 135 -0.06 53
IV.NRCA.HNZ. 2016-08-25T23:27:45.16 0.6 undecidable manual P 295 7.7811 135 0.32 50
IV.MC2.EHZ. 2016-08-25T23:27:45.93 0.3 undecidable manual P 355 11.9769 123 0.44 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.7 0.00016499999999999997 0.14 AML other m 2016-08-25T23:27:59.21
IV.ARRO.EHN. ML:1.5 0.00011061650000000001 0.2304 AML other m 2016-08-25T23:28:00.68
IV.ASSB.HHE. ML:2.0 0.00028100000000000005 1.16 AML other m 2016-08-25T23:27:59.92
IV.ASSB.HHN. ML:2.0 0.00028349999999999995 0.3 AML other m 2016-08-25T23:27:59.82
IV.ATCC.EHE. ML:1.8 0.000124 0.34 AML other m 2016-08-25T23:28:04.93
IV.ATCC.EHN. ML:1.8 0.00011735 0.42 AML other m 2016-08-25T23:28:03.88
IV.CAMP.HHN. ML:1.8 0.00023649999999999998 0.24 AML other m 2016-08-25T23:27:54.91
IV.CAMP.HHE. ML:1.7 0.000202 0.44 AML other m 2016-08-25T23:27:54.87
IV.CESI.HHE. ML:2.1 0.0005475 0.26 AML other m 2016-08-25T23:27:54.54
IV.CESI.HHN. ML:2.4 0.0010705 0.22 AML other m 2016-08-25T23:27:54.53
IV.CING.HHE. ML:1.7 0.00010439999999999999 0.5 AML other m 2016-08-25T23:28:05.41
IV.CING.HHN. ML:1.7 0.00010300000000000001 0.66 AML other m 2016-08-25T23:28:05.09
IV.FDMO.HHN. ML:1.9 0.0004195 0.22 AML other m 2016-08-25T23:27:53.44
IV.FDMO.HHE. ML:1.8 0.000334 0.32 AML other m 2016-08-25T23:27:53.77
IV.FIAM.HHN. ML:1.5 0.00006765 0.38 AML other m 2016-08-25T23:28:03.20
IV.FIAM.HHE. ML:1.6 0.00008175000000000001 0.58 AML other m 2016-08-25T23:28:02.38
IV.FOSV.EHE. ML:1.4 0.0000479 0.56 AML other m 2016-08-25T23:28:10.41
IV.FOSV.EHN. ML:1.6 0.0000776 0.44 AML other m 2016-08-25T23:28:03.94
IV.GIGS.HHE. ML:1.2 0.000045700000000000006 0.2 AML other m 2016-08-25T23:27:59.50
IV.GIGS.HHN. ML:1.2 0.0000467 0.7 AML other m 2016-08-25T23:27:59.43
IV.GUMA.HHE. ML:2.5 0.0015049999999999998 0.52 AML other m 2016-08-25T23:27:54.78
IV.GUMA.HNN. ML:2.4 0.0013050000000000002 0.58 AML other m 2016-08-25T23:27:54.49
IV.GUMA.HNE. ML:2.3 0.001085 0.94 AML other m 2016-08-25T23:27:55.19
IV.GUMA.HHN. ML:2.3 0.0009859499 0.1792 AML other m 2016-08-25T23:27:54.67
IV.LNSS.HHN. ML:2.6 0.0025499999999999997 0.2 AML other m 2016-08-25T23:27:52.98
IV.LNSS.HHE. ML:2.7 0.003085 0.3 AML other m 2016-08-25T23:27:52.86
IV.NRCA.HNE. ML:2.8 0.012166675 0.192 AML other m 2016-08-25T23:27:46.82
IV.NRCA.HHE. ML:2.8 0.01109363 0.1152 AML other m 2016-08-25T23:27:47.42
IV.NRCA.HNN. ML:2.9 0.013142395000000001 0.0896 AML other m 2016-08-25T23:27:46.88
IV.NRCA.HHN. ML:2.9 0.0144094 0.0768 AML other m 2016-08-25T23:27:46.88
IV.RM33.EHE. ML:1.9 0.00034814795 0.1664 AML other m 2016-08-25T23:27:56.34
IV.RM33.HNE. ML:1.9 0.00034131784999999996 0.1408 AML other m 2016-08-25T23:27:56.34
IV.RM33.HNN. ML:1.7 0.00021496805 0.1536 AML other m 2016-08-25T23:27:56.38
IV.RM33.EHN. ML:1.7 0.00021120735000000002 0.1408 AML other m 2016-08-25T23:27:56.38
IV.SNTG.HHE. ML:1.5 0.00007919999999999999 0.5 AML other m 2016-08-25T23:28:01.19
IV.SNTG.HHN. ML:1.5 0.000068383265 0.1024 AML other m 2016-08-25T23:28:01.71
IV.T1243.HHE. ML:2.6 0.00237 0.3 AML other m 2016-08-25T23:27:51.77
IV.T1243.HNN. ML:2.6 0.0024649999999999997 0.28 AML other m 2016-08-25T23:27:51.77
IV.T1243.HNE. ML:2.6 0.002435 0.3 AML other m 2016-08-25T23:27:51.77
IV.T1243.HHN. ML:2.6 0.00244 0.28 AML other m 2016-08-25T23:27:51.77
IV.TERO.HHE. ML:2.1 0.000499 0.26 AML other m 2016-08-25T23:27:56.01
IV.TERO.HHN. ML:2.2 0.000598 0.5 AML other m 2016-08-25T23:27:55.81
IV.VCEL.EHE. ML:2.1 0.0002205 1.58 AML other m 2016-08-25T23:28:05.92
IV.VCEL.EHN. ML:2.0 0.0001895 1.56 AML other m 2016-08-25T23:28:06.85
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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Waveforms Seismic signals in miniseed + resp format Download