Earthquake with magnitude of ML 1.2 on date 22-01-2021 and time 01:17:49 (Italy) in region 4 km S Castelsantangelo sul Nera (MC)

A magnitude ML 1.2 earthquake occured in region: 4 km S Castelsantangelo sul Nera (MC), on

  • 22-01-2021 00:17:49 (UTC)
  • 22-01-2021 01:17:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.16 at 10 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
Castelsantangelo sul Nera MC 4 281 281
Ussita MC 9 444 725
Norcia PG 10 4957 5682
Visso MC 10 1107 6789
Preci PG 10 724 7513
Montemonaco AP 14 604 8117
Montegallo AP 14 523 8640
Arquata del Tronto AP 15 1178 9818
Bolognola MC 16 142 9960
Montefortino FM 17 1178 11138
Acquacanina MC 19 121 11259
Fiastra MC 19 559 11818
Sellano PG 19 1079 12897
Monte Cavallo MC 20 145 13042
Accumoli RI 20 667 13709

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
50 Km W of Teramo (54892 inhabitants)
54 Km NE of Terni (111501 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
97 Km W of Pescara (121014 inhabitants)
100 Km NE of Viterbo (67173 inhabitants)
100 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
Reviewed
Rev100
ML 1.2 2021-01-22
00:17:49
42.86 13.16 10 2021-01-22
00:24:45
Sala Sismica INGV-Roma 86442331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-22 00:17:49 ± 0.04
Latitude 42.86 ± 0.00
Longitude 13.16 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86442331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 276
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 44
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.4029
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 86442331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-22 00:24:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHN. 2021-01-22T00:18:04.32 0.1 undecidable manual S 126 0.4029 50 0.01 95
IV.CAMP.HHN. 2021-01-22T00:18:03.27 0.1 undecidable manual S 151 0.3732 50 -0.18 92
IV.RM33.HNZ. 2021-01-22T00:18:02.87 0.1 undecidable manual S 174 0.3561 50 -0.06 95
IV.LNSS.HHZ. 2021-01-22T00:18:00.53 0.1 undecidable manual S 199 0.2752 50 -0.01 97
IV.GAVE.HNZ. 2021-01-22T00:18:00.10 0.3 undecidable manual S 229 0.2608 50 -0.03 73
IV.T1299.EHE. 2021-01-22T00:18:00.06 0.1 undecidable manual S 159 0.2446 50 0.43 90
IV.SMA1.EHZ. 2021-01-22T00:18:00.15 0.3 undecidable manual S 151 0.2644 50 -0.07 72
IV.CESI.HHZ. 2021-01-22T00:17:59.35 0.1 undecidable manual S 307 0.2365 50 -0.06 97
IV.GUMA.HHN. 2021-01-22T00:17:59.68 0.1 undecidable manual S 32 0.2356 50 0.31 92
IV.TERO.HHN. 2021-01-22T00:17:58.31 0.6 undecidable manual P 126 0.4029 50 0.17 46
IV.CAMP.HHN. 2021-01-22T00:17:57.44 0.3 undecidable manual P 151 0.3732 50 -0.2 69
IT.MTCL.HGE. 2021-01-22T00:17:57.19 0.1 undecidable manual S 317 0.1781 117 -0.21 95
IV.RM33.HNZ. 2021-01-22T00:17:57.28 0.3 undecidable manual P 174 0.3561 50 -0.06 71
IV.MTRA.EHZ. 2021-01-22T00:17:57.88 0.1 undecidable manual S 122 0.2005 114 -0.32 92
IV.FDMO.HHZ. 2021-01-22T00:17:57.48 0.1 undecidable manual S 342 0.1826 116 -0.07 98
IV.CESI.HHZ. 2021-01-22T00:17:55.31 0.1 positive manual P 307 0.2365 50 0 98
IV.GUMA.HHN. 2021-01-22T00:17:55.32 0.3 undecidable manual P 32 0.2356 50 0.03 73
IV.MMO1.EHZ. 2021-01-22T00:17:55.66 0.1 undecidable manual S 73 0.125 126 0.01 100
IV.LNSS.HHZ. 2021-01-22T00:17:55.86 0.1 undecidable manual P 199 0.2752 50 -0.1 95
IV.GAVE.HNZ. 2021-01-22T00:17:55.67 0.1 undecidable manual P 229 0.2608 50 -0.05 96
IV.T1299.EHE. 2021-01-22T00:17:55.72 0.3 undecidable manual P 159 0.2446 50 0.28 69
IV.SMA1.EHZ. 2021-01-22T00:17:55.72 0.3 undecidable manual P 151 0.2644 50 -0.06 72
IV.FDMO.HHZ. 2021-01-22T00:17:54.30 0.6 negative manual P 342 0.1826 116 0.06 49
IV.CSP1.EHZ. 2021-01-22T00:17:54.81 0.6 undecidable manual P 7 0.2311 50 -0.39 45
IT.MTCL.HGE. 2021-01-22T00:17:54.13 0.1 undecidable manual P 317 0.1781 117 -0.02 99
IV.MTRA.EHZ. 2021-01-22T00:17:54.41 0.1 undecidable manual P 122 0.2005 114 -0.2 95
IV.NRCA.HNE. 2021-01-22T00:17:53.83 0.1 undecidable manual S 231 0.0468 153 0.19 98
IV.MMO1.EHZ. 2021-01-22T00:17:53.31 0.1 positive manual P 73 0.125 126 0.17 97
IV.NRCA.HNE. 2021-01-22T00:17:52.32 0.1 undecidable manual P 231 0.0468 153 0.34 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.8 4.6766475E-5 0.14 AML other m 2021-01-22T00:17:57.65
IV.FDMO.HHE. ML:0.7 3.848368E-5 0.24 AML other m 2021-01-22T00:17:57.69
IV.CESI.HHN. ML:1.4 0.000138 0.16 AML other m 2021-01-22T00:17:59.62
IV.CESI.HHE. ML:1.2 9.18E-5 0.22 AML other m 2021-01-22T00:17:59.74
IV.MTRA.EHE. ML:1.2 0.000113470105 0.14 AML other m 2021-01-22T00:17:58.27
IV.MTRA.EHN. ML:1.3 0.0001357181 0.32 AML other m 2021-01-22T00:17:58.55
IV.MTRA.HNE. ML:1.3 0.00012449006 0.29 AML other m 2021-01-22T00:17:58.56
IV.MTRA.HNN. ML:1.4 0.00015579532 0.28 AML other m 2021-01-22T00:17:58.87
IV.CESI.HNN. ML:1.4 0.00015090785 0.18 AML other m 2021-01-22T00:17:59.62
IV.LNSS.HHE. ML:1.3 9.8334545E-5 0.12 AML other m 2021-01-22T00:18:01.20
IV.LNSS.HHN. ML:1.2 7.091744E-5 0.22 AML other m 2021-01-22T00:18:01.00
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