Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 20-01-2019 and time 16:59:33 (Italy) in region 4 km W Arquata del Tronto (AP)

A magnitude ML 1.8 earthquake occured in region: 4 km W Arquata del Tronto (AP), on

  • 20-01-2019 15:59:33 (UTC)
  • 20-01-2019 16:59:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7860, 13.2570 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
Arquata del Tronto AP 4 1178 1178
Montegallo AP 9 523 1701
Accumoli RI 10 667 2368
Acquasanta Terme AP 13 2916 5284
Norcia PG 13 4957 10241
Montemonaco AP 14 604 10845
Castelsantangelo sul Nera MC 15 281 11126
Amatrice RI 18 2657 13783
Montefortino FM 19 1178 14961
Roccafluvione AP 20 2010 16971

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)
56 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)
95 Km S of Ancona (100861 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 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 1.8 2019-01-20
15:59:33		 42.7862 13.2572 11 2019-08-22
08:24:49		 Bollettino Sismico Italiano INGV 65430581
Reviewed
Rev100 		ML 1.8 2019-01-20
15:59:33		 42.7843 13.2557 11 2019-01-20
16:10:21		 Sala Sismica INGV-Roma 64822131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-01-20 15:59:33 ± 0.05
Latitude 42.7862 ± 0.0027
Longitude 13.2572 ± 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 65430581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 96
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 79
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) 58
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) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.11511
Epicentral distance of station farthest from the epicenter (degree) 0.91731
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 37
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 64822131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-01-20 16:10:21

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 47
Type of magnitude ML
Reference to an origin 65430581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-07 00:31:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHN. 2019-01-20T15:59:59.23 0.6 undecidable manual S 332 81.7515 50 1.08 31
IV.ATCC.EHZ. 2019-01-20T15:59:54.93 0.6 undecidable manual S 312 66.8775 50 0.75 37
IV.EL6.EHZ. 2019-01-20T15:59:53.42 0.6 undecidable manual S 348 61.5939 50 0.65 39
IV.FIAM.HHZ. 2019-01-20T15:59:52.44 0.6 undecidable manual S 191 58.5969 50 0.46 42
IV.CESX.HHZ. 2019-01-20T15:59:52.01 0.6 undecidable manual S 250 58.0974 50 0.17 45
IV.SNTG.HHE. 2019-01-20T15:59:52.40 0.6 undecidable manual S 334 57.9975 50 0.58 41
IV.MOMA.HHZ. 2019-01-20T15:59:51.75 0.6 undecidable manual S 272 55.9995 50 0.48 42
IV.ASSB.HHZ. 2019-01-20T15:59:51.62 0.6 undecidable manual S 301 56.2992 50 0.25 44
IV.MPAG.EHZ. 2019-01-20T15:59:51.48 0.6 undecidable manual P 337 101.8203 50 0.52 38
IV.INTR.HHE. 2019-01-20T15:59:50.56 0.6 undecidable manual P 148 101.0211 50 -0.27 40
IV.ATVO.HHN. 2019-01-20T15:59:49.82 0.6 undecidable manual P 314 95.5377 50 -0.16 42
IV.AOI.HHE. 2019-01-20T15:59:49.08 0.6 undecidable manual P 18 89.244 50 0.06 43
IV.SSFR.HHN. 2019-01-20T15:59:48.30 0.6 undecidable manual P 332 81.7515 50 0.44 41
IV.ATFO.HHN. 2019-01-20T15:59:48.85 0.6 undecidable manual P 319 85.0482 50 0.48 40
IV.GIGS.HHN. 2019-01-20T15:59:48.12 0.6 undecidable manual S 145 45.0216 50 -0.24 45
IV.ARVD.HHZ. 2019-01-20T15:59:47.80 0.6 undecidable manual P 342 82.9503 50 -0.26 42
IV.MML1.HNE. 2019-01-20T15:59:47.69 0.6 undecidable manual S 328 43.1235 50 -0.14 46
IV.CESI.HHZ. 2019-01-20T15:59:46.11 0.6 undecidable manual S 310 37.5291 50 -0.25 46
IV.PF6.EHN. 2019-01-20T15:59:46.61 0.6 undecidable manual S 353 39.3273 50 -0.23 46
IV.ATCC.EHZ. 2019-01-20T15:59:45.36 0.6 undecidable manual P 312 66.8775 50 -0.21 44
IV.TERO.HHZ. 2019-01-20T15:59:45.02 0.6 undecidable manual S 123 33.5442 50 -0.28 46
IV.CSP1.EHE. 2019-01-20T15:59:45.09 0.6 undecidable manual S 353 34.1436 50 -0.37 45
IV.FAGN.HHZ. 2019-01-20T15:59:45.95 0.6 undecidable manual P 155 63.5919 50 0.88 35
IV.GUMA.HHZ. 2019-01-20T15:59:45.17 0.3 undecidable manual S 12 31.3464 50 0.47 66
IV.MF5.EHZ. 2019-01-20T15:59:44.39 0.3 undecidable manual S 36 27.75 50 0.64 63
IV.GAVE.EHZ. 2019-01-20T15:59:44.67 0.6 undecidable manual S 251 31.3464 50 -0.03 48
IV.CAMP.HHE. 2019-01-20T15:59:44.25 0.6 undecidable manual S 156 30.4473 50 -0.2 47
IV.FIAM.HHZ. 2019-01-20T15:59:44.08 0.3 undecidable manual P 191 58.5969 50 -0.22 67
IV.CESX.HHZ. 2019-01-20T15:59:44.16 0.6 undecidable manual P 250 58.0974 50 -0.06 46
IV.RM33.EHZ. 2019-01-20T15:59:44.69 0.3 undecidable manual S 186 30.9468 50 0.1 72
IV.EL6.EHZ. 2019-01-20T15:59:44.46 0.6 undecidable manual P 348 61.5939 50 -0.29 43
IV.FDMO.HHZ. 2019-01-20T15:59:44.22 0.6 undecidable manual S 334 31.0467 50 -0.39 45
IV.MOMA.HHZ. 2019-01-20T15:59:43.87 0.3 undecidable manual P 272 55.9995 50 -0.02 70
IV.SNTG.HHE. 2019-01-20T15:59:43.83 0.3 undecidable manual P 334 57.9975 50 -0.38 64
IV.ASSB.HHZ. 2019-01-20T15:59:43.76 0.6 undecidable manual P 301 56.2992 50 -0.19 45
IV.FEMA.HNE. 2019-01-20T15:59:43.17 0.6 undecidable manual S 319 25.752 50 -0.05 49
IV.LNSS.HHZ. 2019-01-20T15:59:43.82 0.3 undecidable manual S 221 26.9508 50 0.29 69
IV.MNTP.HNZ. 2019-01-20T15:59:42.03 0.6 undecidable manual P 24 42.624 50 0.2 46
IV.GIGS.HHN. 2019-01-20T15:59:42.09 0.6 undecidable manual P 145 45.0216 50 -0.12 46
IV.OFFI.HHE. 2019-01-20T15:59:41.83 0.6 undecidable manual P 65 38.5281 50 0.62 41
IV.MML1.HNE. 2019-01-20T15:59:41.54 0.3 undecidable manual P 328 43.1235 50 -0.37 66
IV.T1299.HNN. 2019-01-20T15:59:41.26 0.3 undecidable manual S 173 16.9719 122 0.49 68
IV.SMA1.EHZ. 2019-01-20T15:59:41.26 0.6 undecidable manual S 160 18.3705 120 0.06 49
IV.MC2.EHZ. 2019-01-20T15:59:40.32 0.6 undecidable manual S 338 14.9739 126 0.12 49
IV.GUMA.HHZ. 2019-01-20T15:59:40.02 0.1 positive manual P 12 31.3464 50 -0.08 96
IV.PF6.EHN. 2019-01-20T15:59:40.80 0.3 undecidable manual P 353 39.3273 50 -0.53 64
IV.TERO.HHZ. 2019-01-20T15:59:40.12 0.3 undecidable manual P 123 33.5442 50 -0.32 68
IV.CESI.HHZ. 2019-01-20T15:59:40.72 0.3 undecidable manual P 310 37.5291 50 -0.33 67
IV.CSP1.EHE. 2019-01-20T15:59:40.16 0.6 undecidable manual P 353 34.1436 50 -0.37 45
IV.LNSS.HHZ. 2019-01-20T15:59:39.31 0.3 undecidable manual P 221 26.9508 50 -0.11 72
IV.RM33.EHZ. 2019-01-20T15:59:39.87 0.1 positive manual P 186 30.9468 50 -0.16 94
IV.FDMO.HHZ. 2019-01-20T15:59:39.55 0.1 positive manual P 334 31.0467 50 -0.49 88
IT.MTCL.HGZ. 2019-01-20T15:59:39.94 0.3 undecidable manual P 318 31.1466 50 -0.12 71
IV.MF5.EHZ. 2019-01-20T15:59:39.59 0.3 undecidable manual P 36 27.75 50 0.04 73
IV.NRCA.HHZ. 2019-01-20T15:59:39.56 0.3 undecidable manual S 294 12.7761 130 -0.03 75
IV.GAVE.EHZ. 2019-01-20T15:59:39.86 0.1 positive manual P 251 31.3464 50 -0.24 93
IV.CAMP.HHE. 2019-01-20T15:59:39.79 0.3 undecidable manual P 156 30.4473 50 -0.16 71
IV.FEMA.HNE. 2019-01-20T15:59:39.07 0.3 undecidable manual P 319 25.752 50 -0.17 71
IV.MMO1.EHZ. 2019-01-20T15:59:39.85 0.3 undecidable manual S 24 13.7751 128 -0.02 75
IV.T1299.HNN. 2019-01-20T15:59:38.04 0.3 undecidable manual P 173 16.9719 122 0.21 72
IV.SMA1.EHZ. 2019-01-20T15:59:38.03 0.3 undecidable manual P 160 18.3705 120 -0.04 74
IV.NRCA.HHZ. 2019-01-20T15:59:37.17 0.3 undecidable manual P 294 12.7761 130 0.03 75
IV.MMO1.EHZ. 2019-01-20T15:59:37.28 0.1 positive manual P 24 13.7751 128 -0.02 100
IV.MC2.EHZ. 2019-01-20T15:59:37.55 0.3 undecidable manual P 338 14.9739 126 0.06 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.5 0.003380961 0.1024 AML other m 2019-01-20T15:59:39.65
IV.NRCA.HNE. ML:2.5 0.0033170165 0.1024 AML other m 2019-01-20T15:59:39.65
IV.TERO.HNE. ML:1.2 0.00007197218 1.1808 AML other m 2019-01-20T15:59:39.67
IV.NRCA.HHN. ML:2.6 0.003903768 0.1024 AML other m 2019-01-20T15:59:39.69
IV.NRCA.HNN. ML:2.5 0.0035840355 0.1024 AML other m 2019-01-20T15:59:39.74
IV.SMA1.EHN. ML:1.8 0.000596677 0.2048 AML other m 2019-01-20T15:59:41.52
IV.SMA1.EHE. ML:1.8 0.00043936050000000003 0.1792 AML other m 2019-01-20T15:59:42.20
IV.LNSS.HHE. ML:1.9 0.00046856940000000003 1.7568 AML other m 2019-01-20T15:59:44.98
IV.LNSS.HNE. ML:1.9 0.00045950670000000006 1.7696 AML other m 2019-01-20T15:59:44.99
IV.LNSS.HNN. ML:1.9 0.0004249262 0.2176 AML other m 2019-01-20T15:59:44.17
IV.FDMO.HHE. ML:1.4 0.00011170695 0.192 AML other m 2019-01-20T15:59:44.29
IV.LNSS.HHN. ML:1.9 0.00040038225000000005 0.1664 AML other m 2019-01-20T15:59:44.47
IV.FDMO.HHN. ML:1.6 0.00020588224999999998 0.1792 AML other m 2019-01-20T15:59:44.42
IV.RM33.HNN. ML:1.9 0.0003765499 0.2816 AML other m 2019-01-20T15:59:44.98
IV.RM33.EHN. ML:1.9 0.0003890764 0.2816 AML other m 2019-01-20T15:59:44.98
IV.FIAM.HNE. ML:2.8 0.00144940475 1.5232 AML other m 2019-01-20T15:59:44.85
IV.MF5.EHE. ML:1.8 0.00034984505 0.256 AML other m 2019-01-20T15:59:44.75
IV.MF5.EHN. ML:1.8 0.00036135815000000004 0.3968 AML other m 2019-01-20T15:59:44.77
IV.GUMA.HHE. ML:2.1 0.0005951489999999999 0.2816 AML other m 2019-01-20T15:59:45.48
IV.GUMA.HNN. ML:2.3 0.0009557378999999999 0.4224 AML other m 2019-01-20T15:59:45.70
IV.GUMA.HHN. ML:2.2 0.00074373165 0.2944 AML other m 2019-01-20T15:59:45.50
IV.GAVE.EHN. ML:1.8 0.0003059254 0.1408 AML other m 2019-01-20T15:59:45.83
IV.TERO.HNN. ML:1.3 0.00008971931499999999 0.3584 AML other m 2019-01-20T15:59:46.46
IV.RM33.EHE. ML:1.9 0.0003620425 0.256 AML other m 2019-01-20T15:59:46.34
IV.RM33.HNE. ML:1.9 0.00037622675 0.256 AML other m 2019-01-20T15:59:46.21
IV.GAVE.EHE. ML:1.8 0.00028029110000000004 0.1408 AML other m 2019-01-20T15:59:46.41
IV.TERO.HHE. ML:1.4 0.00009710056 0.1408 AML other m 2019-01-20T15:59:46.55
IV.CESI.HHE. ML:1.3 0.00008143709999999999 0.1664 AML other m 2019-01-20T15:59:46.59
IV.GUMA.HNE. ML:2.0 0.0005243486500000001 0.3584 AML other m 2019-01-20T15:59:46.86
IV.CESI.HHN. ML:1.6 0.00013697904500000003 0.1024 AML other m 2019-01-20T15:59:47.42
IV.TERO.HHN. ML:1.3 0.000084426375 0.2432 AML other m 2019-01-20T15:59:48.52
IV.MOMA.HHE. ML:2.0 0.00025229275000000003 0.1792 AML other m 2019-01-20T15:59:52.39
IV.MOMA.HNE. ML:2.0 0.00023055105 0.192 AML other m 2019-01-20T15:59:52.39
IV.ASSB.HHE. ML:1.5 0.00006752552000000001 0.1152 AML other m 2019-01-20T15:59:52.68
IV.FIAM.HHN. ML:1.2 0.000029158695 0.2176 AML other m 2019-01-20T15:59:52.84
IV.ASSB.HHN. ML:1.4 0.00005128469 0.2944 AML other m 2019-01-20T15:59:52.97
IV.MOMA.HNN. ML:1.9 0.00016257579999999998 0.2432 AML other m 2019-01-20T15:59:53.28
IV.MOMA.HHN. ML:1.8 0.000131246165 0.2432 AML other m 2019-01-20T15:59:53.28
IV.EL6.EHN. ML:1.6 0.00007787541 0.128 AML other m 2019-01-20T15:59:54.31
IV.CESX.HHN. ML:1.4 0.000050390055 0.2432 AML other m 2019-01-20T15:59:55.03
IV.ATCC.EHN. ML:1.2 0.000027780005 0.256 AML other m 2019-01-20T15:59:55.27
IV.ATCC.EHE. ML:1.4 0.000040692055 0.1664 AML other m 2019-01-20T15:59:55.47
IV.FIAM.HHE. ML:1.0 0.0000207935 0.6016 AML other m 2019-01-20T15:59:55.24
IV.EL6.EHE. ML:1.6 0.00007434906499999999 0.2176 AML other m 2019-01-20T15:59:56.35
IV.ARVD.HHN. ML:1.1 0.000013093694500000001 0.1152 AML other m 2019-01-20T16:00:00.77
IV.ARVD.HHE. ML:1.1 0.000016813588 0.1664 AML other m 2019-01-20T16:00:00.77
IV.FIAM.HNN. ML:1.8 0.00012915035 0.768 AML other m 2019-01-20T16:00:04.55
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