Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 18-12-2019 and time 01:53:27 (UTC) in region 3 km SW Montemonaco (AP)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Montemonaco (AP), on

  • 18-12-2019 01:53:27 (UTC)
  • 18-12-2019 02:53:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8850, 13.3030 at 25 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
Montemonaco AP 3 604 604
Montegallo AP 5 523 1127
Montefortino FM 7 1178 2305
Amandola FM 12 3629 5934
Castelsantangelo sul Nera MC 12 281 6215
Comunanza AP 12 3166 9381
Arquata del Tronto AP 12 1178 10559
Palmiano AP 13 196 10755
Bolognola MC 14 142 10897
Roccafluvione AP 14 2010 12907
Ussita MC 15 444 13351
Acquasanta Terme AP 16 2916 16267
Venarotta AP 16 2066 18333
Sarnano MC 17 3264 21597
Montefalcone Appennino FM 17 424 22021
Smerillo FM 18 365 22386
Force AP 18 1354 23740
Visso MC 18 1107 24847
Acquacanina MC 19 121 24968
Norcia PG 20 4957 29925
Monte San Martino MC 20 765 30690

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Teramo (54892 inhabitants)
49 Km E of Foligno (57155 inhabitants)
60 Km N of L'Aquila (69753 inhabitants)
64 Km NE of Terni (111501 inhabitants)
78 Km E of Perugia (166134 inhabitants)
81 Km NW of Montesilvano (53738 inhabitants)
83 Km S of Ancona (100861 inhabitants)
88 Km NW of Pescara (121014 inhabitants)
92 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 1.8 2019-12-18
01:53:27		 42.8847 13.3027 25 2020-02-28
16:42:23		 Bollettino Sismico Italiano INGV 76321011
Reviewed
Rev100 		ML 1.8 2019-12-18
01:53:28		 42.8827 13.3012 23 2019-12-18
02:01:42		 Sala Sismica INGV-Roma 74753361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-18 01:53:27 ± 0.09
Latitude 42.8847 ± 0.0027
Longitude 13.3027 ± 0.0049
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76321011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 89
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
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) 60
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.46765
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 76321011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-07 16:33:18

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 74753361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-18 02:01:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-12-18T01:53:45.31 0.6 undecidable manual S 342 51.9036 109 0.43 43
IV.LNSS.HHZ. 2019-12-18T01:53:42.13 0.6 undecidable manual S 214 37.8288 116 0.73 40
IV.RM33.EHZ. 2019-12-18T01:53:42.95 0.6 undecidable manual S 190 42.3243 113 0.48 43
IV.TERO.HHZ. 2019-12-18T01:53:41.50 0.3 undecidable manual S 140 38.0286 116 0.07 71
IV.CAMP.HHE. 2019-12-18T01:53:41.84 0.6 undecidable manual S 167 39.627 115 0.01 48
IV.MML1.HNE. 2019-12-18T01:53:41.31 0.6 undecidable manual S 314 36.9297 117 0.13 47
IV.CESI.HHZ. 2019-12-18T01:53:40.96 0.6 undecidable manual S 293 34.9428 119 0.25 46
IV.SMA1.EHZ. 2019-12-18T01:53:39.02 0.6 undecidable manual S 175 28.3494 125 -0.18 47
IV.T1299.HNN. 2019-12-18T01:53:39.43 0.3 undecidable manual S 183 27.8499 126 0.34 68
IT.MTCL.HGZ. 2019-12-18T01:53:39.05 0.6 undecidable manual S 296 27.4503 126 0.04 49
IV.PF6.EHN. 2019-12-18T01:53:39.22 0.6 undecidable manual S 343 29.4483 124 -0.23 46
IV.SAP2.EHE. 2019-12-18T01:53:38.73 0.6 undecidable manual S 18 24.753 129 0.28 46
IV.FDMO.HHZ. 2019-12-18T01:53:38.12 0.6 undecidable manual S 314 24.2535 130 -0.23 47
IV.FEMA.HNE. 2019-12-18T01:53:38.29 0.6 undecidable manual S 293 22.2555 133 0.35 46
IV.CSP1.EHZ. 2019-12-18T01:53:38.28 0.3 undecidable manual S 341 24.3534 130 -0.07 72
IV.MF5.EHZ. 2019-12-18T01:53:37.33 0.6 undecidable manual S 48 17.1717 141 0.33 46
IV.GUMA.HHZ. 2019-12-18T01:53:37.79 0.6 undecidable manual S 8 19.9689 136 0.29 46
IV.EL6.EHZ. 2019-12-18T01:53:37.63 0.3 undecidable manual P 342 51.9036 109 -0.09 69
IV.RM33.EHZ. 2019-12-18T01:53:36.26 0.1 undecidable manual P 190 42.3243 113 -0.07 94
IV.MC2.EHZ. 2019-12-18T01:53:36.09 0.6 undecidable manual S 288 9.6792 156 0.13 49
IV.MTRA.EHZ. 2019-12-18T01:53:36.53 0.6 undecidable manual S 152 16.0728 143 -0.31 47
IV.NRCA.HHZ. 2019-12-18T01:53:36.72 0.6 undecidable manual S 250 16.3725 142 -0.15 48
IV.MMO1.EHZ. 2019-12-18T01:53:35.10 0.3 undecidable manual S 50 2.5974 173 -0.35 71
IV.OFFI.HHE. 2019-12-18T01:53:35.33 0.1 undecidable manual P 80 31.6461 122 0.46 87
IV.MML1.HNE. 2019-12-18T01:53:35.42 0.1 undecidable manual P 314 36.9297 117 -0.17 93
IV.CESI.HHZ. 2019-12-18T01:53:35.35 0.1 undecidable manual P 293 34.9428 119 0.03 96
IV.TERO.HHZ. 2019-12-18T01:53:35.62 0.3 undecidable manual P 140 38.0286 116 -0.11 70
IV.CAMP.HHE. 2019-12-18T01:53:35.69 0.1 undecidable manual P 167 39.627 115 -0.27 90
IV.MNTT.EHZ. 2019-12-18T01:53:35.12 0.3 undecidable manual P 50 30.8469 122 0.35 67
IV.LNSS.HHZ. 2019-12-18T01:53:35.77 0.1 positive manual P 214 37.8288 116 0.06 95
IV.FEMA.HNE. 2019-12-18T01:53:34.03 0.3 undecidable manual P 293 22.2555 133 0.31 69
IV.SMA1.EHZ. 2019-12-18T01:53:34.31 0.1 positive manual P 175 28.3494 125 -0.13 95
IV.SAP2.EHE. 2019-12-18T01:53:34.04 0.1 undecidable manual P 18 24.753 129 0.03 97
IV.T1299.HNN. 2019-12-18T01:53:34.39 0.1 undecidable manual P 183 27.8499 126 0.01 97
IT.MTCL.HGZ. 2019-12-18T01:53:34.12 0.3 undecidable manual P 296 27.4503 126 -0.22 70
IV.PF6.EHN. 2019-12-18T01:53:34.27 0.1 undecidable manual P 343 29.4483 124 -0.32 91
IV.FDMO.HHZ. 2019-12-18T01:53:33.73 0.1 negative manual P 314 24.2535 130 -0.22 94
IV.NRCA.HHZ. 2019-12-18T01:53:33.01 0.1 positive manual P 250 16.3725 142 -0.09 97
IV.CSP1.EHZ. 2019-12-18T01:53:33.83 0.1 negative manual P 341 24.3534 130 -0.13 96
IV.MF5.EHZ. 2019-12-18T01:53:33.24 0.1 undecidable manual P 48 17.1717 141 0.06 98
IV.GUMA.HHZ. 2019-12-18T01:53:33.45 0.1 negative manual P 8 19.9689 136 -0.01 99
IV.MTRA.EHZ. 2019-12-18T01:53:32.91 0.1 undecidable manual P 152 16.0728 143 -0.17 96
IV.MMO1.EHZ. 2019-12-18T01:53:32.02 0.1 undecidable manual P 50 2.5974 173 -0.26 97
IV.MC2.EHZ. 2019-12-18T01:53:32.61 0.1 negative manual P 288 9.6792 156 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:2.2 0.0009044999999999999 0.2 AML other m 2019-12-18T01:53:36.74
IV.MTRA.EHN. ML:2.2 0.0009059999999999999 0.2 AML other m 2019-12-18T01:53:36.75
IV.MTRA.HNE. ML:2.3 0.0009755 0.24 AML other m 2019-12-18T01:53:36.82
IV.MTRA.EHE. ML:2.3 0.000977 0.26 AML other m 2019-12-18T01:53:36.83
IV.NRCA.HNN. ML:2.1 0.000679 0.7 AML other m 2019-12-18T01:53:36.52
IV.NRCA.HHE. ML:2.2 0.0007985 0.8 AML other m 2019-12-18T01:53:36.47
IV.NRCA.HNE. ML:2.2 0.0007955000000000001 0.94 AML other m 2019-12-18T01:53:37.00
IV.MF5.EHN. ML:1.7 0.00026450000000000003 0.96 AML other m 2019-12-18T01:53:37.99
IV.NRCA.HHN. ML:2.1 0.0006360000000000001 0.14 AML other m 2019-12-18T01:53:37.52
IV.MF5.EHE. ML:1.8 0.000309 0.62 AML other m 2019-12-18T01:53:37.90
IV.GUMA.HHN. ML:1.9 0.0003875 0.36 AML other m 2019-12-18T01:53:38.20
IV.FDMO.HHE. ML:1.5 0.0001305 0.2 AML other m 2019-12-18T01:53:38.24
IV.CSP1.EHN. ML:2.0 0.0003985 0.28 AML other m 2019-12-18T01:53:38.45
IV.FDMO.HHN. ML:1.5 0.0001356 0.38 AML other m 2019-12-18T01:53:38.53
IV.CSP1.EHE. ML:1.7 0.000228 0.44 AML other m 2019-12-18T01:53:38.65
IV.SMA1.EHE. ML:1.6 0.000158 0.34 AML other m 2019-12-18T01:53:39.36
IV.GUMA.HHE. ML:2.0 0.00047599999999999997 0.34 AML other m 2019-12-18T01:53:39.79
IV.SMA1.EHN. ML:1.5 0.00013700000000000002 0.88 AML other m 2019-12-18T01:53:39.80
IV.CESI.HHE. ML:1.5 0.0000965 0.62 AML other m 2019-12-18T01:53:41.24
IV.CESI.HHN. ML:1.7 0.0001715 0.2 AML other m 2019-12-18T01:53:41.81
IV.TERO.HHE. ML:1.3 0.000056750000000000004 1.08 AML other m 2019-12-18T01:53:41.44
IV.TERO.HHN. ML:1.4 0.00007305 0.56 AML other m 2019-12-18T01:53:42.29
IV.LNSS.HHN. ML:1.6 0.000121 0.22 AML other m 2019-12-18T01:53:42.45
IV.RM33.EHE. ML:1.6 0.00011135000000000001 0.12 AML other m 2019-12-18T01:53:43.54
IV.RM33.EHN. ML:1.6 0.000106 0.62 AML other m 2019-12-18T01:53:44.00
IV.LNSS.HHE. ML:1.6 0.00011399999999999999 1.58 AML other m 2019-12-18T01:53:44.14
IV.EL6.EHE. ML:1.7 0.00012085 0.44 AML other m 2019-12-18T01:53:45.64
IV.EL6.EHN. ML:1.8 0.00013450000000000002 0.74 AML other m 2019-12-18T01:53:46.47
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