Earthquake with magnitude of ML 1.2 on date 12-10-2021 and time 20:08:05 (Italy) in region 6 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.2 earthquake occured in region: 6 km SE Castelsantangelo sul Nera (MC), on

  • 12-10-2021 18:08:05 (UTC)
  • 12-10-2021 20:08:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.857, 13.205 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 6 281 281
Montegallo AP 11 523 804
Ussita MC 11 444 1248
Montemonaco AP 11 604 1852
Norcia PG 12 4957 6809
Arquata del Tronto AP 12 1178 7987
Visso MC 13 1107 9094
Preci PG 14 724 9818
Montefortino FM 15 1178 10996
Bolognola MC 15 142 11138
Accumoli RI 18 667 11805
Amandola FM 19 3629 15434
Acquasanta Terme AP 19 2916 18350
Acquacanina MC 19 121 18471

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
58 Km N of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
88 Km S of Ancona (100861 inhabitants)
93 Km W of Pescara (121014 inhabitants)
97 Km NW of Chieti (51815 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 1.2 2021-10-12
18:08:05
42.8573 13.2052 10 2021-10-12
18:20:53
Sala Sismica INGV-Roma 96479571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-12 18:08:05 ± 0.05
Latitude 42.8573 ± 0.0027
Longitude 13.2052 ± 0.0037
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 96479571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 388
Semi-minor axis of confidence ellipse (meter) 174
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.44067
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 96479571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-12 18:20:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-10-12T18:08:20.90 0.6 undecidable manual S 295 0.4407 50 -0.06 48
IV.TERO.HHZ. 2021-10-12T18:08:19.11 0.6 undecidable manual S 129 0.375 50 0.09 48
IV.RM33.EHZ. 2021-10-12T18:08:18.57 0.6 undecidable manual S 179 0.348 50 0.35 46
IV.MML1.EHZ. 2021-10-12T18:08:17.10 0.6 undecidable manual S 326 0.3076 50 0.08 49
IV.MF5.EHZ. 2021-10-12T18:08:15.17 0.6 undecidable manual S 55 0.2275 50 0.53 45
IV.CESI.HHZ. 2021-10-12T18:08:15.72 0.6 undecidable manual S 304 0.2644 50 -0.03 50
IV.CSP1.EHZ. 2021-10-12T18:08:14.54 0.6 undecidable manual S 360 0.2347 50 -0.31 47
IV.ASSB.HHZ. 2021-10-12T18:08:14.23 0.3 negative manual P 295 0.4407 50 -0.08 71
IV.SMA1.EHZ. 2021-10-12T18:08:14.71 0.6 undecidable manual S 157 0.2464 50 -0.48 45
IV.FDMO.HHZ. 2021-10-12T18:08:13.47 0.6 undecidable manual S 334 0.1988 115 -0.19 49
IV.TERO.HHZ. 2021-10-12T18:08:13.06 0.3 positive manual P 129 0.375 50 -0.13 72
IV.MML1.EHZ. 2021-10-12T18:08:12.03 1.0 negative manual P 326 0.3076 50 -0.01 25
IV.MTRA.EHZ. 2021-10-12T18:08:12.49 0.6 undecidable manual S 126 0.1727 118 -0.26 48
IV.RM33.EHZ. 2021-10-12T18:08:12.92 0.6 undecidable manual P 179 0.348 50 0.19 47
IV.CESI.HHZ. 2021-10-12T18:08:11.29 0.1 undecidable manual P 304 0.2644 50 -0.02 100
IV.MF5.EHZ. 2021-10-12T18:08:11.08 1.0 positive manual P 55 0.2275 50 0.41 23
IV.FDMO.HHZ. 2021-10-12T18:08:10.02 1.0 negative manual P 334 0.1988 115 -0.08 25
IV.MMO1.EHZ. 2021-10-12T18:08:10.20 0.6 undecidable manual S 65 0.0989 133 -0.2 50
IV.CSP1.EHZ. 2021-10-12T18:08:10.67 0.6 negative manual P 360 0.2347 50 -0.12 49
IV.SMA1.EHZ. 2021-10-12T18:08:10.96 1.0 positive manual P 157 0.2464 50 -0.02 25
IV.NRCA.HHZ. 2021-10-12T18:08:09.67 0.6 undecidable manual S 250 0.071 142 0 52
IV.MC2.EHZ. 2021-10-12T18:08:09.62 0.6 undecidable manual S 348 0.0558 149 0.28 49
IV.MTRA.EHZ. 2021-10-12T18:08:09.61 0.3 negative manual P 126 0.1727 118 0.03 76
IV.MMO1.EHZ. 2021-10-12T18:08:08.24 1.0 undecidable manual P 65 0.0989 133 0.02 26
IV.MC2.EHZ. 2021-10-12T18:08:07.79 1.0 undecidable manual P 348 0.0558 149 0.19 25
IV.NRCA.HHZ. 2021-10-12T18:08:07.93 0.3 undecidable manual P 250 0.071 142 0.13 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.0005215 0.06 AML other m 2021-10-12T18:08:09.66
IV.NRCA.HHN. ML:1.7 0.0006625 0.16 AML other m 2021-10-12T18:08:09.69
IV.FDMO.HHE. ML:1 6.545E-5 0.22 AML other m 2021-10-12T18:08:13.70
IV.MTRA.EHN. ML:1 7.305E-5 0.22 AML other m 2021-10-12T18:08:13.52
IV.FDMO.HHN. ML:1.2 0.0001029 0.2 AML other m 2021-10-12T18:08:13.65
IV.MTRA.EHE. ML:1 7.55E-5 0.6 AML other m 2021-10-12T18:08:14.38
IV.CESI.HHE. ML:1 4.4E-5 1.72 AML other m 2021-10-12T18:08:15.11
IV.CESI.HHN. ML:1.1 6.07E-5 1.88 AML other m 2021-10-12T18:08:15.04
IV.TERO.HHN. ML:1 2.99E-5 1.18 AML other m 2021-10-12T18:08:19.28
IV.TERO.HHE. ML:1.5 0.0001165 0.9 AML other m 2021-10-12T18:08:31.36
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