Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 13-12-2018 and time 01:55:59 (Italy) in region 4 km NW Arquata del Tronto (AP)

A magnitude ML 1.7 earthquake occured in region: 4 km NW Arquata del Tronto (AP), on

  • 13-12-2018 00:55:59 (UTC)
  • 13-12-2018 01:55:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7930, 13.2630 at 14 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 4 1178 1178
Montegallo AP 8 523 1701
Accumoli RI 11 667 2368
Acquasanta Terme AP 12 2916 5284
Montemonaco AP 13 604 5888
Norcia PG 14 4957 10845
Castelsantangelo sul Nera MC 15 281 11126
Montefortino FM 18 1178 12304
Amatrice RI 18 2657 14961
Roccafluvione AP 19 2010 16971
Ussita MC 20 444 17415

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
49 Km E of Foligno (57155 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
57 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
79 Km E of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km NW of Chieti (51815 inhabitants)
94 Km S of Ancona (100861 inhabitants)
98 Km NE of Guidonia Montecelio (88673 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
Bulletin
Rev1000 		ML 1.7 2018-12-13
00:55:59		 42.7927 13.2627 14 2019-06-04
09:16:18		 Bollettino Sismico Italiano INGV 68946781
Reviewed
Rev100 		ML 1.6 2018-12-13
00:55:59		 42.7895 13.259 11 2018-12-13
01:03:01		 Sala Sismica INGV-Roma 63875251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-13 00:55:59 ± 0.05
Latitude 42.7927 ± 0.0027
Longitude 13.2627 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 68946781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 295
Semi-minor axis of confidence ellipse (meter) 109
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
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) 0.10432
Epicentral distance of station farthest from the epicenter (degree) 0.58186
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 34
Type of magnitude ML
Reference to an origin 68946781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-27 11:28:55

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 34
Type of magnitude ML
Reference to an origin 63875251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-13 01:03:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2018-12-13T00:56:15.29 0.6 undecidable manual S 240 46.9197 94 0.43 43
IV.GIGS.HHZ. 2018-12-13T00:56:14.35 0.6 undecidable manual S 146 45.4212 95 -0.1 46
IV.CESI.HHZ. 2018-12-13T00:56:12.32 0.3 undecidable manual S 309 37.4292 96 -0.02 71
IV.VCEL.EHZ. 2018-12-13T00:56:11.25 0.6 undecidable manual P 133 64.5909 93 0.01 45
IV.GAVE.EHZ. 2018-12-13T00:56:11.12 0.6 undecidable manual S 250 32.0457 98 0.22 46
IV.TERO.HHZ. 2018-12-13T00:56:11.12 0.6 undecidable manual S 124 33.6441 97 -0.2 46
IV.GUMA.HHZ. 2018-12-13T00:56:11.01 0.3 undecidable manual S 11 30.5472 98 0.5 66
IV.FDMO.HHZ. 2018-12-13T00:56:10.24 0.3 undecidable manual S 332 30.5472 98 -0.28 68
IV.CAMP.HHZ. 2018-12-13T00:56:10.71 0.6 undecidable manual S 157 30.8469 98 0.1 47
IV.LNSS.HHZ. 2018-12-13T00:56:10.20 0.3 undecidable manual S 221 27.75 100 0.42 67
IV.MF5.EHZ. 2018-12-13T00:56:10.29 0.6 undecidable manual S 36 26.9508 100 0.73 40
IV.RM33.EHZ. 2018-12-13T00:56:10.98 0.3 undecidable manual S 187 31.746 98 0.16 70
IV.MOMA.HHZ. 2018-12-13T00:56:09.87 0.1 undecidable manual P 272 56.3991 93 -0.1 91
IV.ASSB.HHZ. 2018-12-13T00:56:09.77 0.3 undecidable manual P 300 56.3991 93 -0.2 67
IV.GIGS.HHZ. 2018-12-13T00:56:08.29 0.3 undecidable manual P 146 45.4212 95 0.01 70
IV.ARRO.EHZ. 2018-12-13T00:56:08.40 0.1 undecidable manual P 240 46.9197 94 -0.12 92
IV.SMA1.EHZ. 2018-12-13T00:56:07.58 0.3 undecidable manual S 162 18.9699 110 0.09 73
IV.GUMA.HHZ. 2018-12-13T00:56:06.15 0.3 undecidable manual P 11 30.5472 98 0.14 71
IV.CESI.HHZ. 2018-12-13T00:56:06.92 0.3 undecidable manual P 309 37.4292 96 -0.14 70
IV.MC2.EHZ. 2018-12-13T00:56:06.54 0.3 undecidable manual S 336 14.4744 120 0.13 73
IV.RM33.EHZ. 2018-12-13T00:56:06.17 0.3 undecidable manual P 187 31.746 98 -0.02 73
IV.GAVE.EHZ. 2018-12-13T00:56:06.21 0.3 undecidable manual P 250 32.0457 98 -0.02 72
IV.TERO.HHZ. 2018-12-13T00:56:06.24 0.1 undecidable manual P 124 33.6441 97 -0.23 92
IV.LNSS.HHZ. 2018-12-13T00:56:05.57 0.1 undecidable manual P 221 27.75 100 -0.02 97
IV.MF5.EHZ. 2018-12-13T00:56:05.66 0.1 undecidable manual P 36 26.9508 100 0.2 94
IV.MTRA.EHZ. 2018-12-13T00:56:05.65 0.1 undecidable manual S 110 11.5773 128 -0.13 97
IV.FDMO.HHZ. 2018-12-13T00:56:05.70 0.3 undecidable manual P 332 30.5472 98 -0.31 68
IV.NRCA.HNZ. 2018-12-13T00:56:05.88 0.3 undecidable manual S 291 12.876 124 -0.17 72
IV.CAMP.HHZ. 2018-12-13T00:56:05.95 0.3 undecidable manual P 157 30.8469 98 -0.11 71
IV.MMO1.EHZ. 2018-12-13T00:56:05.92 0.3 undecidable manual S 24 12.9759 124 -0.14 72
IV.SMA1.EHZ. 2018-12-13T00:56:04.25 0.1 undecidable manual P 162 18.9699 110 -0.01 99
IV.NRCA.HNZ. 2018-12-13T00:56:03.36 0.1 undecidable manual P 291 12.876 124 -0.07 98
IV.MMO1.EHZ. 2018-12-13T00:56:03.39 0.1 undecidable manual P 24 12.9759 124 -0.05 99
IV.MC2.EHZ. 2018-12-13T00:56:03.69 0.1 undecidable manual P 336 14.4744 120 0.05 99
IV.MTRA.EHZ. 2018-12-13T00:56:03.28 0.1 undecidable manual P 110 11.5773 128 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:2.1 0.0012000000000000001 0.22 AML other m 2018-12-13T00:56:05.91
IV.NRCA.HNN. ML:2.4 0.002385 1.9 AML other m 2018-12-13T00:56:05.99
IV.NRCA.HHN. ML:2.5 0.0027750000000000006 1.9 AML other m 2018-12-13T00:56:05.99
IV.MTRA.EHE. ML:2.1 0.001185 1.6 AML other m 2018-12-13T00:56:06.81
IV.NRCA.HHE. ML:2.6 0.0036900000000000006 1.86 AML other m 2018-12-13T00:56:06.99
IV.NRCA.HNE. ML:2.6 0.0036399999999999996 0.14 AML other m 2018-12-13T00:56:06.00
IV.MTRA.HNN. ML:1.9 0.000783 0.22 AML other m 2018-12-13T00:56:06.18
IV.MTRA.EHN. ML:1.9 0.0008085 0.36 AML other m 2018-12-13T00:56:06.25
IV.SMA1.EHN. ML:1.2 0.00011379999999999999 0.32 AML other m 2018-12-13T00:56:07.64
IV.SMA1.EHE. ML:1.3 0.000129 0.6 AML other m 2018-12-13T00:56:07.95
IV.LNSS.HNN. ML:1.8 0.000309 0.2 AML other m 2018-12-13T00:56:10.40
IV.LNSS.HHN. ML:1.9 0.00035650000000000005 0.2 AML other m 2018-12-13T00:56:10.40
IV.FDMO.HHN. ML:1.5 0.000131 0.14 AML other m 2018-12-13T00:56:10.58
IV.FDMO.HHE. ML:1.4 0.0001225 0.42 AML other m 2018-12-13T00:56:10.56
IV.LNSS.HHE. ML:1.9 0.00035499999999999996 0.7 AML other m 2018-12-13T00:56:10.34
IV.LNSS.HNE. ML:1.8 0.00033499999999999996 0.7 AML other m 2018-12-13T00:56:10.34
IV.MF5.EHN. ML:1.5 0.0001625 0.72 AML other m 2018-12-13T00:56:10.49
IV.MF5.EHE. ML:1.6 0.00023249999999999999 1.46 AML other m 2018-12-13T00:56:10.87
IV.GUMA.HHN. ML:2.0 0.0005105 0.6 AML other m 2018-12-13T00:56:11.53
IV.GAVE.EHE. ML:1.7 0.000228 0.82 AML other m 2018-12-13T00:56:11.66
IV.TERO.HHE. ML:1.3 0.00008635 0.12 AML other m 2018-12-13T00:56:11.65
IV.RM33.EHN. ML:1.2 0.0000761 0.94 AML other m 2018-12-13T00:56:11.25
IV.RM33.EHE. ML:1.4 0.000112 0.46 AML other m 2018-12-13T00:56:11.73
IV.GAVE.EHN. ML:1.8 0.000268 0.9 AML other m 2018-12-13T00:56:11.48
IV.TERO.HHN. ML:1.4 0.00009975 0.48 AML other m 2018-12-13T00:56:12.32
IV.CESI.HHN. ML:1.8 0.00023899999999999998 0.46 AML other m 2018-12-13T00:56:12.85
IV.CESI.HHE. ML:1.5 0.00011949999999999999 0.62 AML other m 2018-12-13T00:56:13.28
IV.GUMA.HHE. ML:2.0 0.00044599999999999994 0.28 AML other m 2018-12-13T00:56:13.61
IV.GIGS.HHE. ML:0.8 0.000020649999999999997 1.52 AML other m 2018-12-13T00:56:14.00
IV.GIGS.HHN. ML:0.7 0.000014200000000000001 0.8 AML other m 2018-12-13T00:56:15.40
IV.ARRO.EHN. ML:1.3 0.00005 0.74 AML other m 2018-12-13T00:56:16.44
IV.ARRO.EHE. ML:1.2 0.00004495 1.44 AML other m 2018-12-13T00:56:16.26
IV.MOMA.HHE. ML:1.5 0.0000741 0.42 AML other m 2018-12-13T00:56:20.61
IV.MOMA.HHN. ML:1.3 0.0000455 0.8 AML other m 2018-12-13T00:56:20.02
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