Earthquake with magnitude of ML 1.0 on date 18-10-2021 and time 13:37:05 (UTC) in region 6 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.0 earthquake occured in region: 6 km SE Castelsantangelo sul Nera (MC), on

  • 18-10-2021 13:37:05 (UTC)
  • 18-10-2021 15:37:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.858, 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
Montemonaco AP 11 604 1408
Ussita MC 11 444 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 18 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 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 1.0 2021-10-18
13:37:05
42.858 13.2052 10 2021-10-18
14:02:09
Sala Sismica INGV-Roma 96728681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-18 13:37:05 ± 0.07
Latitude 42.8580 ± 0.0036
Longitude 13.2052 ± 0.0049
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 96728681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 444
Semi-minor axis of confidence ellipse (meter) 355
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 50
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30757
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 96728681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-18 14:02:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2021-10-18T13:38:41.10 3.0 undecidable manual Sg 8.86 0
IV.TDS.HHZ. 2021-10-18T13:38:35.20 3.0 undecidable manual Sg 7.16 0
GU.BHB.HHZ. 2021-10-18T13:38:30.86 3.0 undecidable manual Pg 17.209999 0
IV.CET2.HHZ. 2021-10-18T13:38:21.70 3.0 undecidable manual Sn -4.74 0
GU.ROTM.HHZ. 2021-10-18T13:38:20.37 3.0 positive manual Pg 15.88 0
GU.POPM.HHZ. 2021-10-18T13:38:16.10 3.0 undecidable manual Sg 1.89 0
IV.IMOL.HNZ. 2021-10-18T13:38:15.03 3.0 undecidable manual Sg 6.59 0
IV.EUCT.HNZ. 2021-10-18T13:38:13.67 3.0 undecidable manual Pg 12.38 0
IT.LNT.HGZ. 2021-10-18T13:38:13.90 3.0 undecidable manual Pn 3.28 0
SI.ROSI.HHZ. 2021-10-18T13:38:09.72 3.0 positive manual Pn 0.77 0
IV.CAR1.HHZ. 2021-10-18T13:37:57.75 3.0 negative manual Pg 7.36 0
IV.MTMR.EHZ. 2021-10-18T13:37:43.88 3.0 undecidable manual Sn -4.57 0
IV.CRMI.HHZ. 2021-10-18T13:37:40.12 3.0 undecidable manual Pg 5.14 0
IV.IMOL.HNZ. 2021-10-18T13:37:34.61 3.0 positive manual Pn -1.01 0
IV.PP3.EHZ. 2021-10-18T13:37:31.63 3.0 undecidable manual S -3.33 0
IV.MTL1.HNZ. 2021-10-18T13:37:29.66 3.0 undecidable manual S -4.2 0
IV.MML1.EHZ. 2021-10-18T13:37:17.33 0.3 undecidable manual S 326 0.3076 50 0.1 72
IV.CESI.HHZ. 2021-10-18T13:37:16.09 0.3 undecidable manual S 304 0.2644 50 0.13 72
IV.LNSS.HHZ. 2021-10-18T13:37:16.68 0.3 undecidable manual S 205 0.2824 50 0.19 71
IV.MF5.EHZ. 2021-10-18T13:37:15.52 0.1 undecidable manual S 55 0.2266 50 0.67 84
IV.CSP1.EHZ. 2021-10-18T13:37:14.78 0.3 undecidable manual S 360 0.2338 50 -0.27 69
IV.FDMO.HHZ. 2021-10-18T13:37:13.60 0.3 undecidable manual S 334 0.1979 115 -0.27 71
IV.TERO.HHZ. 2021-10-18T13:37:13.29 3.0 undecidable manual S 4.46 0
IV.FEMA.HNZ. 2021-10-18T13:37:12.40 0.3 undecidable manual S 312 0.1538 121 0.03 74
IV.MML1.EHZ. 2021-10-18T13:37:12.30 0.1 undecidable manual P 326 0.3076 50 0.05 97
IV.MTRA.HNN. 2021-10-18T13:37:12.77 0.1 undecidable manual S 126 0.1727 118 -0.23 95
IV.LNSS.HHZ. 2021-10-18T13:37:11.79 0.3 undecidable manual P 205 0.2824 50 -0.04 72
IV.SMA1.EHZ. 2021-10-18T13:37:11.17 3.0 undecidable manual S 0.45 0
IV.CESI.HHZ. 2021-10-18T13:37:11.44 0.3 undecidable manual P 304 0.2644 50 -0.08 72
IV.CSP1.EHZ. 2021-10-18T13:37:10.89 0.3 undecidable manual P 360 0.2338 50 -0.11 72
IV.MF5.EHZ. 2021-10-18T13:37:10.65 0.6 undecidable manual P 55 0.2266 50 -0.23 47
IV.MMO1.HNN. 2021-10-18T13:37:10.31 0.3 undecidable manual S 65 0.098 133 -0.33 71
IV.NRCA.HHZ. 2021-10-18T13:37:09.81 0.1 undecidable manual S 250 0.071 142 -0.12 100
IV.FEMA.HNZ. 2021-10-18T13:37:09.63 0.1 undecidable manual P 312 0.1538 121 0.18 96
IV.FDMO.HHZ. 2021-10-18T13:37:09.63 0.3 undecidable manual P 334 0.1979 115 -0.69 62
IV.MTRA.HNN. 2021-10-18T13:37:09.78 0.1 undecidable manual P 126 0.1727 118 -0.04 99
IV.MC2.EHZ. 2021-10-18T13:37:09.72 0.1 undecidable manual S 347 0.0549 149 0.14 98
IV.MMO1.HNN. 2021-10-18T13:37:08.50 0.1 undecidable manual P 65 0.098 133 0.05 100
IV.MC2.EHZ. 2021-10-18T13:37:08.12 0.1 undecidable manual P 347 0.0549 149 0.28 95
IV.NRCA.HHZ. 2021-10-18T13:37:08.20 0.1 undecidable manual P 250 0.071 142 0.16 98
IV.GIUL.HHZ. 2021-10-18T13:37:05.33 3.0 negative manual P -3.76 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.4 0.000335 0.14 AML other m 2021-10-18T13:37:09.97
IV.NRCA.HHE. ML:1.3 0.0002611758 0.0832 AML other m 2021-10-18T13:37:10.18
IV.FDMO.HHE. ML:0.9 4.805E-5 0.22 AML other m 2021-10-18T13:37:13.98
IV.FDMO.HHN. ML:1 6.92E-5 1.78 AML other m 2021-10-18T13:37:14.93
IV.CESI.HHN. ML:0.8 2.935E-5 0.18 AML other m 2021-10-18T13:37:16.36
IV.CESI.HHE. ML:0.6 1.8270055E-5 0.1408 AML other m 2021-10-18T13:37:16.42
IV.LNSS.HHE. ML:0.9 3.975E-5 0.14 AML other m 2021-10-18T13:37:17.15
IV.LNSS.HHN. ML:1 4.5E-5 0.24 AML other m 2021-10-18T13:37:17.46
IV.MML1.EHE. ML:0.7 1.81E-5 0.8 AML other m 2021-10-18T13:37:17.50
IV.MML1.EHN. ML:0.8 2.66E-5 0.12 AML other m 2021-10-18T13:37:17.55
IV.NRCA.HNE. ML:1.2 0.0002535685 0.0832 AML other m 2021-10-18T13:37:10.18
IV.NRCA.HNN. ML:1.4 0.00031307395 0.1408 AML other m 2021-10-18T13:37:09.97
IV.CSP1.EHE. ML:1 4.7502935E-5 0.1984 AML other m 2021-10-18T13:37:15.85
IV.CSP1.EHN. ML:0.8 4.0667105E-5 0.1408 AML other m 2021-10-18T13:37:15.14
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