Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 03-12-2020 and time 11:24:28 (Italy) in region 4 km W Montemonaco (AP)

A magnitude ML 1.3 earthquake occured in region: 4 km W Montemonaco (AP), on

  • 03-12-2020 10:24:28 (UTC)
  • 03-12-2020 11:24:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8900, 13.2750 at 18 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 5 604 604
Montegallo AP 7 523 1127
Montefortino FM 8 1178 2305
Castelsantangelo sul Nera MC 10 281 2586
Amandola FM 12 3629 6215
Bolognola MC 12 142 6357
Ussita MC 13 444 6801
Arquata del Tronto AP 13 1178 7979
Comunanza AP 14 3166 11145
Palmiano AP 15 196 11341
Visso MC 16 1107 12448
Sarnano MC 17 3264 15712
Roccafluvione AP 17 2010 17722
Acquasanta Terme AP 17 2916 20638
Acquacanina MC 18 121 20759
Venarotta AP 18 2066 22825
Norcia PG 18 4957 27782
Montefalcone Appennino FM 19 424 28206
Fiastra MC 19 559 28765
Smerillo FM 19 365 29130
Preci PG 19 724 29854
Force AP 20 1354 31208

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
61 Km N of L'Aquila (69753 inhabitants)
63 Km NE of Terni (111501 inhabitants)
76 Km E of Perugia (166134 inhabitants)
83 Km NW of Montesilvano (53738 inhabitants)
83 Km S of Ancona (100861 inhabitants)
90 Km NW of Pescara (121014 inhabitants)
94 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
Reviewed
Rev100 		ML 1.3 2020-12-03
10:24:28		 42.8898 13.2752 18 2020-12-03
10:31:44		 Sala Sismica INGV-Roma 85174471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-03 10:24:28 ± 0.09
Latitude 42.8898 ± 0.0045
Longitude 13.2752 ± 0.0086
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85174471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 640
Semi-minor axis of confidence ellipse (meter) 479
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 62
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45686
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 85174471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-03 10:31:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-12-03T10:25:23.40 3.0 undecidable manual P 0
IV.EL6.EHZ. 2020-12-03T10:24:45.57 0.3 undecidable manual S 344 50.7159 100 0.53 63
IV.TERO.HHZ. 2020-12-03T10:24:42.27 0.3 undecidable manual S 138 39.9267 103 0.06 71
IV.PF6.EHZ. 2020-12-03T10:24:39.08 0.3 undecidable manual S 347 28.2495 111 -0.15 70
IV.EL6.EHZ. 2020-12-03T10:24:38.12 0.6 negative manual P 344 50.7159 100 -0.09 45
IV.FDMO.HHZ. 2020-12-03T10:24:37.63 0.3 undecidable manual S 317 22.2555 118 -0.14 72
IV.GUMA.HHZ. 2020-12-03T10:24:37.34 0.6 undecidable manual S 14 19.7691 122 0.16 48
IV.CSP1.EHZ. 2020-12-03T10:24:37.87 0.3 undecidable manual S 346 23.1546 117 -0.09 72
IV.MF5.EHZ. 2020-12-03T10:24:37.14 0.6 undecidable manual S 54 18.4704 124 0.24 47
IV.MTRA.EHZ. 2020-12-03T10:24:36.67 0.6 undecidable manual S 146 17.7711 126 -0.06 49
IV.TERO.HHZ. 2020-12-03T10:24:36.55 1.0 undecidable manual P 138 39.9267 103 -0.03 24
IV.MC2.EHZ. 2020-12-03T10:24:35.37 0.6 undecidable manual S 289 7.3815 153 0.47 45
IV.MMO1.EHZ. 2020-12-03T10:24:34.36 0.6 undecidable manual S 76 4.2957 164 -0.24 49
IV.PF6.EHZ. 2020-12-03T10:24:34.57 0.1 undecidable manual P 347 28.2495 111 -0.29 91
IV.MF5.EHZ. 2020-12-03T10:24:33.57 1.0 undecidable manual P 54 18.4704 124 0.05 24
IV.FDMO.HHZ. 2020-12-03T10:24:33.92 0.3 positive manual P 317 22.2555 118 -0.1 72
IV.GUMA.HHZ. 2020-12-03T10:24:33.71 0.1 undecidable manual P 14 19.7691 122 0.03 98
IV.CSP1.EHZ. 2020-12-03T10:24:33.93 1.0 undecidable manual P 346 23.1546 117 -0.2 23
IV.MTRA.EHZ. 2020-12-03T10:24:33.38 0.1 undecidable manual P 146 17.7711 126 -0.04 98
IV.MMO1.EHZ. 2020-12-03T10:24:32.10 0.1 undecidable manual P 76 4.2957 164 -0.09 100
IV.MC2.EHZ. 2020-12-03T10:24:32.66 1.0 undecidable manual P 289 7.3815 153 0.3 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.1 0.00008454648 0.096 AML other m 2020-12-03T10:24:37.13
IV.MTRA.EHN. ML:1.3 0.00012406025 0.224 AML other m 2020-12-03T10:24:37.03
IV.MF5.EHE. ML:1.6 0.00025372735000000004 1.1776 AML other m 2020-12-03T10:24:37.25
IV.MF5.EHN. ML:1.8 0.00036592520000000003 1.3376 AML other m 2020-12-03T10:24:37.29
IV.FDMO.HHE. ML:1.1 0.00006603132334999999 0.096 AML other m 2020-12-03T10:24:37.96
IV.FDMO.HHN. ML:1.1 0.00007378940000000001 2.0608 AML other m 2020-12-03T10:24:37.84
IV.CSP1.EHE. ML:1.7 0.00027313 1.6384 AML other m 2020-12-03T10:24:38.08
IV.CSP1.EHN. ML:1.2 0.00008128009999999999 45.44 AML other m 2020-12-03T10:24:34.06
IV.TERO.HHE. ML:0.9 0.0000269137885 0.16 AML other m 2020-12-03T10:24:43.69
IV.TERO.HHN. ML:1.6 0.00013415739999999998 3.36 AML other m 2020-12-03T10:24:44.25
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