Earthquake with magnitude of ML 0.7 on date 01-12-2020 and time 01:55:51 (UTC) in region 3 km SW Arquata del Tronto (AP)

A magnitude ML 0.7 earthquake occured in region: 3 km SW Arquata del Tronto (AP), on

  • 01-12-2020 01:55:51 (UTC)
  • 01-12-2020 02:55:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.756, 13.269 at 14 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 3 1178 1178
Accumoli RI 7 667 1845
Montegallo AP 11 523 2368
Acquasanta Terme AP 12 2916 5284
Amatrice RI 14 2657 7941
Norcia PG 15 4957 12898
Montemonaco AP 17 604 13502
Cittareale RI 18 482 13984
Castelsantangelo sul Nera MC 18 281 14265
Valle Castellana TE 19 977 15242

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
51 Km E of Foligno (57155 inhabitants)
55 Km E of Terni (111501 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
82 Km E of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
98 Km S of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.7 2020-12-01
01:55:51
42.7557 13.269 14 2020-12-01
02:05:06
Sala Sismica INGV-Roma 85120541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-01 01:55:51 ± 0.08
Latitude 42.7557 ± 0.0036
Longitude 13.2690 ± 0.0049
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85120541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 430
Semi-minor axis of confidence ellipse (meter) 193
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
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) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.33904
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 85120541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-01 02:05:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-12-01T01:56:04.38 0.3 undecidable manual S 352 0.339 96 0.28 73
IV.TERO.HHZ. 2020-12-01T01:56:02.21 0.3 undecidable manual S 118 0.2797 98 -0.13 74
IV.LNSS.HHZ. 2020-12-01T01:56:00.81 0.3 undecidable manual S 228 0.2266 101 0 77
IV.MC2.EHZ. 2020-12-01T01:55:59.11 0.3 undecidable manual S 339 0.1664 110 0.03 78
IV.CSP1.EHZ. 2020-12-01T01:55:59.24 0.6 undecidable manual P 352 0.339 96 0.44 47
IV.MMO1.EHZ. 2020-12-01T01:55:58.53 0.3 undecidable manual S 16 0.1493 114 -0.09 76
IV.T1299.HNZ. 2020-12-01T01:55:58.10 0.3 undecidable manual S 175 0.1214 122 0.21 76
IV.MTRA.EHZ. 2020-12-01T01:55:57.13 0.3 undecidable manual S 89 0.0935 133 -0.09 78
IV.NRCA.HHZ. 2020-12-01T01:55:57.78 0.3 undecidable manual S 305 0.1376 117 -0.52 69
IV.TERO.HHZ. 2020-12-01T01:55:57.79 0.3 undecidable manual P 118 0.2797 98 0.01 76
IV.SMA1.EHZ. 2020-12-01T01:55:57.93 0.3 undecidable manual S 159 0.134 118 -0.28 74
IV.LNSS.HHZ. 2020-12-01T01:55:56.80 0.1 undecidable manual P 228 0.2266 101 -0.1 100
IV.MMO1.EHZ. 2020-12-01T01:55:55.67 0.3 undecidable manual P 16 0.1493 114 0.04 78
IV.T1299.HNZ. 2020-12-01T01:55:55.39 0.3 undecidable manual P 175 0.1214 122 0.18 77
IV.MC2.EHZ. 2020-12-01T01:55:55.85 0.3 undecidable manual P 339 0.1664 110 -0.05 76
IV.NRCA.HHZ. 2020-12-01T01:55:55.31 1.0 positive manual P 305 0.1376 117 -0.14 25
IV.SMA1.EHZ. 2020-12-01T01:55:55.47 0.3 undecidable manual P 159 0.134 118 0.07 79
IV.MTRA.EHZ. 2020-12-01T01:55:54.92 0.3 undecidable manual P 89 0.0935 133 0.09 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:0.9 7.2946655E-5 0.1408 AML other m 2020-12-01T01:55:57.44
IV.MTRA.EHN. ML:0.7 4.977461E-5 0.1984 AML other m 2020-12-01T01:55:57.68
IV.MTRA.HNE. ML:0.9 7.576892E-5 0.1504 AML other m 2020-12-01T01:55:57.86
IV.MTRA.HNN. ML:0.6 4.380524E-5 0.0704 AML other m 2020-12-01T01:55:57.46
IV.NRCA.HHE. ML:0.9 6.2764535E-5 0.08 AML other m 2020-12-01T01:55:57.97
IV.NRCA.HHN. ML:1.1 0.00010655871 0.12 AML other m 2020-12-01T01:55:58.55
IV.NRCA.HNE. ML:0.9 6.1813945E-5 0.0896 AML other m 2020-12-01T01:55:57.97
IV.NRCA.HNN. ML:1.2 0.00011518827 0.1296 AML other m 2020-12-01T01:55:58.49
IV.SMA1.EHE. ML:0.2 1.64985695E-5 0.08 AML other m 2020-12-01T01:55:58.67
IV.SMA1.EHN. ML:0.2 1.440831E-5 0.0992 AML other m 2020-12-01T01:55:58.27
IV.TERO.HHE. ML:0.5 1.562294E-5 0.08 AML other m 2020-12-01T01:56:02.87
IV.TERO.HHN. ML:0.8 2.3834345E-5 0.5792 AML other m 2020-12-01T01:56:02.29
IV.TERO.HNE. ML:0.8 2.6348821E-5 0.1008 AML other m 2020-12-01T01:56:02.79
IV.CSP1.EHN. ML:0.4 1.1830875E-5 0.04 AML other m 2020-12-01T01:56:04.58
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