Earthquake with magnitude of ML 0.2 on date 15-04-2021 and time 19:39:16 (Italy) in region 4 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 0.2 earthquake occured in region: 4 km SE Castelsantangelo sul Nera (MC), on

  • 15-04-2021 17:39:16 (UTC)
  • 15-04-2021 19:39:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.864, 13.185 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 10 444 725
Norcia PG 11 4957 5682
Visso MC 11 1107 6789
Preci PG 12 724 7513
Montemonaco AP 12 604 8117
Montegallo AP 12 523 8640
Arquata del Tronto AP 14 1178 9818
Bolognola MC 15 142 9960
Montefortino FM 16 1178 11138
Acquacanina MC 19 121 11259
Amandola FM 19 3629 14888
Accumoli RI 19 667 15555
Fiastra MC 19 559 16114

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
55 Km NE of Terni (111501 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
95 Km W of Pescara (121014 inhabitants)
99 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 0.2 2021-04-15
17:39:16
42.8637 13.1847 11 2021-04-15
17:49:45
Sala Sismica INGV-Roma 89124991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-15 17:39:16 ± 0.05
Latitude 42.8637 ± 0.0018
Longitude 13.1847 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 89124991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 413
Semi-minor axis of confidence ellipse (meter) 199
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) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.39031
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 89124991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-15 17:49:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TDS.HHZ. 2021-04-15T17:41:08.39 3.0 undecidable manual Sn 4.28 0
IV.HPAC.HHZ. 2021-04-15T17:41:07.75 3.0 undecidable manual Pg 21.24 0
IV.CAGR.HHZ. 2021-04-15T17:40:42.13 3.0 undecidable manual Pg 9.18 0
IV.PZUN.HHZ. 2021-04-15T17:40:40.02 3.0 undecidable manual Sn 0.53 0
IV.SPS2.HHZ. 2021-04-15T17:40:27.97 3.0 undecidable manual Pg 7.98 0
IV.NDIM.HNZ. 2021-04-15T17:40:27.11 3.0 undecidable manual Sn -0.99 0
IV.MTGR.HHZ. 2021-04-15T17:40:26.36 3.0 undecidable manual Pn -0.92 0
IV.SENA.HHZ. 2021-04-15T17:40:08.59 3.0 undecidable manual Pn 0.46 0
IV.NDIM.HNZ. 2021-04-15T17:39:57.24 3.0 positive manual Pn 1.52 0
IV.PAOL.HHZ. 2021-04-15T17:39:48.51 3.0 undecidable manual Pn -1.22 0
IV.IMOL.HNZ. 2021-04-15T17:39:48.01 3.0 negative manual Pg 2.81 0
IV.RIBO.EHZ.01 2021-04-15T17:39:38.01 3.0 undecidable manual P -1.36 0
IV.LRP.EHZ. 2021-04-15T17:39:38.49 3.0 positive manual P 1.18 0
IV.TERO.HHZ. 2021-04-15T17:39:30.75 0.3 undecidable manual S 128 0.3903 50 -0.19 70
IV.LNSS.HHN. 2021-04-15T17:39:27.71 0.6 undecidable manual S 202 0.2815 50 0.01 49
IV.CESI.HHE. 2021-04-15T17:39:26.76 0.6 undecidable manual S 305 0.2491 50 0.03 49
IV.CSP1.EHZ. 2021-04-15T17:39:26.20 0.3 undecidable manual S 4 0.2284 50 0.06 74
IV.TERO.HHZ. 2021-04-15T17:39:25.05 0.6 undecidable manual P 128 0.3903 50 0.09 47
IV.MURB.HNZ. 2021-04-15T17:39:25.22 3.0 negative manual P -0.78 0
IT.MTCL.HGN. 2021-04-15T17:39:24.56 0.6 undecidable manual S 314 0.188 117 -0.34 47
IV.FDMO.HHZ. 2021-04-15T17:39:24.81 0.3 undecidable manual S 338 0.1871 117 -0.05 75
IV.LNSS.HHN. 2021-04-15T17:39:23.03 0.1 undecidable manual P 202 0.2815 50 -0.05 98
IV.MML1.HNE. 2021-04-15T17:39:23.41 0.1 undecidable manual P 328 0.2941 50 0.1 96
IV.CSP1.EHZ. 2021-04-15T17:39:22.29 0.6 negative manual P 4 0.2284 50 0.1 49
IV.CESI.HHE. 2021-04-15T17:39:22.49 0.1 undecidable manual P 305 0.2491 50 -0.04 98
IV.NRCA.HHZ. 2021-04-15T17:39:21.15 0.6 undecidable manual S 240 0.0594 148 0.05 51
IT.MTCL.HGN. 2021-04-15T17:39:21.44 0.1 undecidable manual P 314 0.188 117 -0.03 100
IV.FDMO.HHZ. 2021-04-15T17:39:21.45 0.6 negative manual P 338 0.1871 117 0 50
IV.SMA1.EHZ. 2021-04-15T17:39:20.90 3.0 negative manual P -0.96 0
IV.NRCA.HHZ. 2021-04-15T17:39:19.57 0.6 undecidable manual P 240 0.0594 148 0.29 48
IV.ARRO.EHZ. 2021-04-15T17:39:19.36 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.9 0.000115 0.16 AML other m 2021-04-15T17:39:21.33
IV.NRCA.HHE. ML:1 0.0001395 1.86 AML other m 2021-04-15T17:39:21.93
IV.FDMO.HHE. ML:-0.2 6.593267E-6 0.2816 AML other m 2021-04-15T17:39:25.13
IV.FDMO.HHN. ML:-0.2 7.399335E-6 0.2432 AML other m 2021-04-15T17:39:25.11
IV.TERO.HHE. ML:0.2 5.6666165E-6 0.4608 AML other m 2021-04-15T17:39:32.63
IV.TERO.HHN. ML:0.2 6.718102E-6 0.4736 AML other m 2021-04-15T17:39:31.44
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