Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 21-04-2017 and time 08:12:49 (Italy) in region 3 km W Montegallo (AP)

A magnitude ML 2.0 earthquake occured in region: 3 km W Montegallo (AP), on

  • 21-04-2017 06:12:49 (UTC)
  • 21-04-2017 08:12:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8510, 13.3010 at 16 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
Montegallo AP 3 523 523
Montemonaco AP 6 604 1127
Arquata del Tronto AP 9 1178 2305
Montefortino FM 11 1178 3483
Acquasanta Terme AP 13 2916 6399
Castelsantangelo sul Nera MC 13 281 6680
Palmiano AP 14 196 6876
Roccafluvione AP 14 2010 8886
Comunanza AP 15 3166 12052
Amandola FM 15 3629 15681
Venarotta AP 16 2066 17747
Ussita MC 17 444 18191
Bolognola MC 17 142 18333
Accumoli RI 18 667 19000
Norcia PG 18 4957 23957
Visso MC 19 1107 25064

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of Teramo (54892 inhabitants)
50 Km E of Foligno (57155 inhabitants)
56 Km N of L'Aquila (69753 inhabitants)
62 Km NE of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
80 Km E of Perugia (166134 inhabitants)
86 Km NW of Pescara (121014 inhabitants)
87 Km S of Ancona (100861 inhabitants)
90 Km NW of Chieti (51815 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 2017-04-21
06:12:49		 42.8508 13.3008 16 2019-07-19
13:20:59		 Bollettino Sismico Italiano INGV 63044151
Reviewed
Rev100 		ML 2.0 2017-04-21
06:12:49		 42.8477 13.3007 15 2017-04-21
06:22:00		 Sala Sismica INGV-Roma 44165061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-21 06:12:49 ± 0.06
Latitude 42.8508 ± 0.0018
Longitude 13.3008 ± 0.0037
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 63044151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 320
Semi-minor axis of confidence ellipse (meter) 29
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 263
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 64
Number of defining phases 64
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.08274
Epicentral distance of station farthest from the epicenter (degree) 0.88313
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 36
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 44165061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-21 06:22:00

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 63044151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-11-14 11:05:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2017-04-21T06:13:13.60 0.3 undecidable manual S 327 77.367 95 1.2 44
IV.CING.HHZ. 2017-04-21T06:13:08.19 0.3 undecidable manual S 352 58.7967 96 0.71 57
IV.EL6.EHZ. 2017-04-21T06:13:07.29 0.6 undecidable manual S 343 55.5 97 0.7 39
IV.T1211.EHZ. 2017-04-21T06:13:05.93 0.3 undecidable manual S 226 50.616 98 0.62 60
IV.PIEI.HHZ. 2017-04-21T06:13:05.68 0.3 undecidable manual P 321 98.0241 93 -0.11 62
IV.GIGS.HHZ. 2017-04-21T06:13:04.91 0.3 undecidable manual S 153 49.4172 98 -0.07 69
IV.MURB.HHZ. 2017-04-21T06:13:02.92 0.3 undecidable manual P 306 77.7666 95 0.24 64
IV.RM33.EHZ. 2017-04-21T06:13:02.39 0.3 undecidable manual S 191 38.5281 101 0.26 68
IV.SSFR.HHZ. 2017-04-21T06:13:02.66 0.1 undecidable manual P 327 77.367 95 0.05 88
IV.TERO.HHZ. 2017-04-21T06:13:01.25 0.3 undecidable manual S 136 35.3424 103 -0.04 71
IV.LNSS.HHZ. 2017-04-21T06:13:01.46 0.3 undecidable manual S 218 34.743 103 0.33 67
IV.CESI.HHZ. 2017-04-21T06:13:01.71 0.3 undecidable manual S 298 36.4413 102 0.14 70
IV.ATCC.EHZ. 2017-04-21T06:13:00.97 0.6 undecidable manual P 305 65.1903 96 0.22 44
IV.T1219.EHZ. 2017-04-21T06:13:00.60 0.3 undecidable manual S 314 33.1446 104 -0.11 71
IV.CSP1.EHE. 2017-04-21T06:12:59.25 0.3 undecidable manual S 344 27.8499 108 -0.11 72
IV.EL6.EHZ. 2017-04-21T06:12:59.37 0.3 undecidable manual P 343 55.5 97 0.11 68
IV.CING.HHZ. 2017-04-21T06:12:59.65 0.3 undecidable manual P 352 58.7967 96 -0.12 67
IV.ARRO.EHZ. 2017-04-21T06:12:58.93 0.3 undecidable manual P 236 53.0025 97 0.05 69
IV.T1212.EHZ. 2017-04-21T06:12:58.25 0.3 undecidable manual S 242 23.5542 113 -0.04 73
IV.FDMO.HHZ. 2017-04-21T06:12:58.81 0.1 undecidable manual S 320 26.9508 109 -0.31 92
IV.SMA1.EHZ. 2017-04-21T06:12:58.51 0.3 undecidable manual S 173 24.5532 111 -0.03 73
IV.T1222.EHZ. 2017-04-21T06:12:58.79 0.6 undecidable manual P 203 54.3012 97 -0.29 44
IV.T1211.EHZ. 2017-04-21T06:12:58.39 0.1 undecidable manual P 226 50.616 98 -0.13 91
IV.GUMA.HNN. 2017-04-21T06:12:58.80 0.6 undecidable manual S 7 23.6541 112 0.49 44
IV.T1299.EHZ. 2017-04-21T06:12:58.73 0.3 undecidable manual S 184 24.0537 112 0.32 69
IV.SNTG.HHZ. 2017-04-21T06:12:58.64 0.3 undecidable manual P 327 53.502 97 -0.32 65
IV.FEMA.HNE. 2017-04-21T06:12:58.28 0.6 undecidable manual S 301 23.8539 112 -0.08 49
IV.T1218.EHZ. 2017-04-21T06:12:58.99 0.1 undecidable manual S 217 25.1526 111 0.32 91
IV.GIGS.HHZ. 2017-04-21T06:12:57.87 0.1 undecidable manual P 153 49.4172 98 -0.46 84
IV.T1213.HNE. 2017-04-21T06:12:57.38 0.6 undecidable manual S 226 19.9689 118 -0.03 49
IV.T1216.EHZ. 2017-04-21T06:12:57.99 0.6 undecidable manual S 281 23.3544 113 -0.24 47
IV.T1214.HNE. 2017-04-21T06:12:56.01 0.6 undecidable manual S 217 12.5763 134 0.19 48
IV.CESI.HHZ. 2017-04-21T06:12:56.20 0.6 undecidable manual P 298 36.4413 102 -0.16 46
IV.NRCA.HNZ. 2017-04-21T06:12:56.22 0.1 undecidable manual S 263 15.2736 127 -0.14 97
IV.RM33.EHZ. 2017-04-21T06:12:56.57 0.3 undecidable manual P 191 38.5281 101 -0.11 70
IV.T1256.HHZ. 2017-04-21T06:12:56.79 0.1 undecidable manual S 341 18.2706 121 -0.24 95
IV.OFFI.HHZ. 2017-04-21T06:12:56.53 0.1 undecidable manual P 73 32.6451 104 0.74 80
XO.AM05.HNZ. 2017-04-21T06:12:56.15 0.6 undecidable manual S 17 14.6742 129 -0.08 49
IV.LNSS.HHZ. 2017-04-21T06:12:56.10 0.1 positive manual P 218 34.743 103 -0.01 96
IV.T1217.EHZ. 2017-04-21T06:12:55.78 0.1 undecidable manual P 243 33.8439 104 -0.19 93
IV.T1244.EHZ. 2017-04-21T06:12:55.58 0.3 undecidable manual S 181 10.3785 141 0.15 73
IV.MC2.EHZ. 2017-04-21T06:12:55.68 0.3 undecidable manual S 307 11.2776 138 0.1 73
IV.T1245.HNZ. 2017-04-21T06:12:55.27 0.1 undecidable manual S 274 9.1797 145 0.04 99
IV.TERO.HHZ. 2017-04-21T06:12:55.95 0.1 negative manual P 136 35.3424 103 -0.25 91
IV.T1219.EHZ. 2017-04-21T06:12:55.56 0.1 undecidable manual P 314 33.1446 104 -0.3 91
IV.T1241.HNZ. 2017-04-21T06:12:55.33 0.1 undecidable manual S 87 10.5783 140 -0.13 98
IV.GUMA.HNN. 2017-04-21T06:12:54.57 0.1 undecidable manual P 7 23.6541 112 0.09 97
IV.T1299.EHZ. 2017-04-21T06:12:54.69 0.1 undecidable manual P 184 24.0537 112 0.15 95
IV.FEMA.HNE. 2017-04-21T06:12:54.32 0.3 undecidable manual P 301 23.8539 112 -0.18 71
IV.T1216.EHZ. 2017-04-21T06:12:54.22 0.1 undecidable manual P 281 23.3544 113 -0.21 94
IV.T1218.EHZ. 2017-04-21T06:12:54.65 0.1 undecidable manual P 217 25.1526 111 -0.04 97
IV.T1212.EHZ. 2017-04-21T06:12:54.40 0.1 positive manual P 242 23.5542 113 -0.06 97
IV.FDMO.HHZ. 2017-04-21T06:12:54.68 0.1 negative manual P 320 26.9508 109 -0.27 92
IV.CSP1.EHE. 2017-04-21T06:12:54.87 0.1 undecidable manual P 344 27.8499 108 -0.22 93
IV.SMA1.EHZ. 2017-04-21T06:12:54.54 0.1 negative manual P 173 24.5532 111 -0.07 96
IV.T1256.HHZ. 2017-04-21T06:12:53.57 0.1 undecidable manual P 341 18.2706 121 -0.17 96
XO.AM05.HNZ. 2017-04-21T06:12:53.22 0.1 undecidable manual P 17 14.6742 129 -0.06 98
IV.T1214.HNE. 2017-04-21T06:12:53.14 0.1 undecidable manual P 217 12.5763 134 0.1 98
IV.T1213.HNE. 2017-04-21T06:12:53.90 0.1 undecidable manual P 226 19.9689 118 -0.06 98
IV.NRCA.HNZ. 2017-04-21T06:12:53.22 0.1 undecidable manual P 263 15.2736 127 -0.13 97
IV.T1245.HNZ. 2017-04-21T06:12:52.71 0.1 undecidable manual P 274 9.1797 145 0.01 100
IV.T1241.HNZ. 2017-04-21T06:12:52.72 0.1 undecidable manual P 87 10.5783 140 -0.11 98
IV.T1244.EHZ. 2017-04-21T06:12:52.91 0.1 undecidable manual P 181 10.3785 141 0.1 98
IV.MC2.EHZ. 2017-04-21T06:12:52.96 0.1 negative manual P 307 11.2776 138 0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1245.HHE. ML:2.1 0.0012749999999999999 0.26 AML other m 2017-04-21T06:12:55.48
IV.T1245.HNE. ML:2.1 0.001285 0.24 AML other m 2017-04-21T06:12:55.48
IV.T1241.EHE. ML:2.1 0.0012385 0.14 AML other m 2017-04-21T06:12:55.40
IV.T1241.HNE. ML:2.1 0.0012005 0.16 AML other m 2017-04-21T06:12:55.39
IV.T1241.HNN. ML:2.3 0.0017349999999999998 0.3 AML other m 2017-04-21T06:12:55.49
IV.T1241.EHN. ML:2.3 0.0017250000000000002 0.3 AML other m 2017-04-21T06:12:55.50
IV.T1245.HHN. ML:2.0 0.0009559999999999999 1.36 AML other m 2017-04-21T06:12:56.68
IV.T1245.HNN. ML:2.1 0.00115 1.58 AML other m 2017-04-21T06:12:56.79
IV.NRCA.HHE. ML:2.2 0.001295 0.26 AML other m 2017-04-21T06:12:56.57
IV.NRCA.HNE. ML:2.2 0.0012150000000000002 0.26 AML other m 2017-04-21T06:12:56.57
IV.T1256.HHN. ML:1.7 0.00032799999999999995 1.76 AML other m 2017-04-21T06:12:56.88
IV.T1256.HHE. ML:1.7 0.000336 1.28 AML other m 2017-04-21T06:12:57.86
IV.NRCA.HNN. ML:2.2 0.001065 0.1 AML other m 2017-04-21T06:12:57.39
IV.NRCA.HHN. ML:2.2 0.001165 0.1 AML other m 2017-04-21T06:12:57.39
IV.T1216.EHN. ML:1.8 0.00033150000000000003 0.26 AML other m 2017-04-21T06:12:58.34
IV.T1212.EHE. ML:1.7 0.0002925 0.54 AML other m 2017-04-21T06:12:58.44
IV.T1212.EHN. ML:1.8 0.00035749999999999996 1.06 AML other m 2017-04-21T06:12:58.45
IV.SMA1.EHE. ML:2.2 0.000763 0.24 AML other m 2017-04-21T06:12:58.78
IV.SMA1.EHN. ML:2.1 0.0006000000000000001 0.24 AML other m 2017-04-21T06:12:58.81
IV.T1299.EHN. ML:1.9 0.000459 1.48 AML other m 2017-04-21T06:12:58.11
IV.FDMO.HHE. ML:1.7 0.000227 1.54 AML other m 2017-04-21T06:12:58.96
IV.T1216.EHE. ML:1.6 0.0002275 1.76 AML other m 2017-04-21T06:12:59.02
IV.T1299.EHE. ML:1.6 0.00023099999999999998 0.24 AML other m 2017-04-21T06:12:59.07
IV.T1218.HNE. ML:2.4 0.0013 0.32 AML other m 2017-04-21T06:12:59.25
IV.T1218.EHE. ML:2.4 0.0011985000000000001 0.32 AML other m 2017-04-21T06:12:59.25
IV.FDMO.HHN. ML:1.6 0.0001875 0.2 AML other m 2017-04-21T06:12:59.36
IV.T1218.HNN. ML:2.6 0.0020350000000000004 0.22 AML other m 2017-04-21T06:12:59.21
IV.T1218.EHN. ML:2.6 0.002065 0.2 AML other m 2017-04-21T06:12:59.22
IV.T1219.HNN. ML:1.9 0.00033099999999999997 0.3 AML other m 2017-04-21T06:13:00.89
IV.T1219.EHN. ML:1.9 0.000319 0.3 AML other m 2017-04-21T06:13:00.74
IV.T1219.EHE. ML:1.8 0.0002775 1.18 AML other m 2017-04-21T06:13:01.39
IV.T1219.HNE. ML:1.9 0.0002855 1.16 AML other m 2017-04-21T06:13:01.97
IV.LNSS.HHE. ML:2.1 0.0005155000000000001 0.18 AML other m 2017-04-21T06:13:01.94
IV.TERO.HHN. ML:1.9 0.000279 0.12 AML other m 2017-04-21T06:13:01.87
IV.TERO.HHE. ML:1.9 0.00028100000000000005 1.66 AML other m 2017-04-21T06:13:01.12
IV.LNSS.HHN. ML:2.1 0.00044699999999999997 0.36 AML other m 2017-04-21T06:13:01.78
IV.CESI.HHN. ML:1.7 0.000174 0.18 AML other m 2017-04-21T06:13:02.49
IV.CESI.HHE. ML:1.7 0.00016849999999999998 0.12 AML other m 2017-04-21T06:13:02.61
IV.RM33.EHN. ML:1.9 0.0002535 1.14 AML other m 2017-04-21T06:13:03.06
IV.RM33.EHE. ML:2.0 0.000345 0.14 AML other m 2017-04-21T06:13:03.20
IV.SNTG.HHN. ML:1.5 0.00007099999999999999 1.18 AML other m 2017-04-21T06:13:07.92
IV.CING.HHE. ML:1.9 0.0001628 0.42 AML other m 2017-04-21T06:13:09.72
IV.CING.HHN. ML:1.8 0.0001185 1.16 AML other m 2017-04-21T06:13:09.83
IV.SNTG.HHE. ML:1.4 0.00006495 0.42 AML other m 2017-04-21T06:13:11.44
IV.MURB.HHE. ML:2.1 0.00016949999999999997 1.2 AML other m 2017-04-21T06:13:16.93
IV.MURB.HHN. ML:2.0 0.000133 1.02 AML other m 2017-04-21T06:13:17.26
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
Waveforms Seismic signals in miniseed + resp format Download