Earthquake with magnitude of ML 1.1 on date 01-01-2020 and time 03:37:25 (Italy) in region 7 km NW Arquata del Tronto (AP)

A magnitude ML 1.1 earthquake occured in region: 7 km NW Arquata del Tronto (AP), on

  • 01-01-2020 02:37:25 (UTC)
  • 01-01-2020 03:37:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.82, 13.24 at 16 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.

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 8 1178 1178
Montegallo AP 8 523 1701
Castelsantangelo sul Nera MC 11 281 1982
Montemonaco AP 11 604 2586
Norcia PG 12 4957 7543
Accumoli RI 14 667 8210
Acquasanta Terme AP 15 2916 11126
Ussita MC 16 444 11570
Montefortino FM 16 1178 12748
Visso MC 17 1107 13855
Preci PG 17 724 14579
Bolognola MC 19 142 14721
Roccafluvione AP 20 2010 16731
Palmiano AP 20 196 16927
Amandola FM 20 3629 20556

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
54 Km N of L'Aquila (69753 inhabitants)
57 Km NE of Terni (111501 inhabitants)
76 Km E of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km S of Ancona (100861 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.1 2020-01-01
02:37:25
42.83 13.24 16 2020-01-01
02:42:09
Sala Sismica INGV-Roma 75154991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-01 02:37:25 ± 0.1
Latitude 42.83 ± 0.00
Longitude 13.24 ± 0.01
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75154991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 529
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 75154991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-01 02:42:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-01-01T02:37:35.58 0.6 undecidable manual S 45 0.2293 110 0.31 47
IV.SMA1.EHZ. 2020-01-01T02:37:34.80 0.6 undecidable manual S 160 0.2068 113 0.15 48
IV.MNTT.EHZ. 2020-01-01T02:37:33.78 0.6 negative manual P 48 0.3525 101 0.5 44
IV.MC2.EHZ. 2020-01-01T02:37:32.13 0.6 undecidable manual S 337 0.0935 141 0.19 49
IV.CESI.HHZ. 2020-01-01T02:37:32.51 0.3 negative manual P 306 0.304 104 0.04 73
IV.MTRA.EHZ. 2020-01-01T02:37:32.59 0.6 undecidable manual S 121 0.134 128 -0.21 49
IV.RM33.EHZ. 2020-01-01T02:37:32.79 0.6 positive manual P 183 0.3166 103 0.11 48
IV.NRCA.HHZ. 2020-01-01T02:37:32.03 0.6 undecidable manual S 275 0.0917 141 0.12 50
IV.FDMO.HHZ. 2020-01-01T02:37:31.12 0.3 positive manual P 332 0.2383 109 -0.28 70
IV.CSP1.EHZ. 2020-01-01T02:37:31.61 0.1 positive manual P 355 0.268 106 -0.26 93
IV.MMO1.EHZ. 2020-01-01T02:37:31.70 0.6 undecidable manual S 41 0.098 139 -0.33 48
IV.MF5.EHZ. 2020-01-01T02:37:31.30 0.1 undecidable manual P 45 0.2293 110 0.05 98
IV.GUMA.HHZ. 2020-01-01T02:37:31.54 0.1 positive manual P 16 0.2473 108 -0.01 99
IV.SMA1.EHZ. 2020-01-01T02:37:30.98 1.0 positive manual P 160 0.2068 113 0.09 25
IV.MMO1.EHZ. 2020-01-01T02:37:29.22 0.1 negative manual P 41 0.098 139 -0.16 99
IV.NRCA.HHZ. 2020-01-01T02:37:29.41 0.1 negative manual P 275 0.0917 141 0.1 100
IV.MC2.EHZ. 2020-01-01T02:37:29.45 0.3 positive manual P 337 0.0935 141 0.12 75
IV.MTRA.EHZ. 2020-01-01T02:37:29.76 0.1 negative manual P 121 0.134 128 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.5 0.0002715 0.1 AML other m 2020-01-01T02:37:32.24
IV.NRCA.HHE. ML:1.3 0.000197 0.12 AML other m 2020-01-01T02:37:32.50
IV.MTRA.EHE. ML:1.3 0.000163 1.52 AML other m 2020-01-01T02:37:33.03
IV.MTRA.EHN. ML:1.1 9.63E-5 1.38 AML other m 2020-01-01T02:37:33.09
IV.SMA1.EHN. ML:1.2 8.305E-5 0.22 AML other m 2020-01-01T02:37:35.02
IV.FDMO.HHN. ML:0.9 4.16E-5 0.2 AML other m 2020-01-01T02:37:35.47
IV.FDMO.HHE. ML:0.8 3.205E-5 0.8 AML other m 2020-01-01T02:37:36.69
IV.SMA1.EHE. ML:1 5.44E-5 1.22 AML other m 2020-01-01T02:37:36.22
IV.CESI.HHN. ML:1.2 6.09E-5 0.32 AML other m 2020-01-01T02:37:38.09
IV.CESI.HHE. ML:1 4.03E-5 0.28 AML other m 2020-01-01T02:37:38.09
IV.RM33.EHN. ML:1.2 5.52E-5 0.24 AML other m 2020-01-01T02:37:38.58
IV.GUMA.HHN. ML:1.1 6.58E-5 1.62 AML other m 2020-01-01T02:37:39.81
IV.RM33.EHE. ML:1 3.49E-5 1.52 AML other m 2020-01-01T02:37:39.22
IV.GUMA.HHE. ML:1.2 8.025E-5 0.88 AML other m 2020-01-01T02:37:46.07
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download