INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.1 on date 18-05-2018 and time 00:53:29 (Italy) in region 3 km NW Castelsantangelo sul Nera (MC)

A magnitude ML 1.1 earthquake occured in region: 3 km NW Castelsantangelo sul Nera (MC), on

  • 17-05-2018 22:53:29 (UTC)
  • 18-05-2018 00:53:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.92, 13.13 at 12 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 3 281 281
Ussita MC 3 444 725
Visso MC 4 1107 1832
Preci PG 9 724 2556
Bolognola MC 12 142 2698
Acquacanina MC 13 121 2819
Fiastra MC 14 559 3378
Monte Cavallo MC 14 145 3523
Norcia PG 14 4957 8480
Fiordimonte MC 14 202 8682
Pieve Torina MC 16 1458 10140
Montemonaco AP 16 604 10744
Pievebovigliana MC 17 866 11610
Sellano PG 17 1079 12689
Montefortino FM 17 1178 13867
Montegallo AP 18 523 14390
Sarnano MC 19 3264 17654
Amandola FM 20 3629 21283
Muccia MC 20 915 22198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
94 Km W of Montesilvano (53738 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
Rev 100 ML 1.1 2018-05-17
22:53:29
42.92 13.13 12 2018-05-17
22:59:08
Sala Sismica INGV-Roma 56967041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-17 22:53:29 ± 0.08
Latitude 42.92 ± 0.00
Longitude 13.13 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 56967041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 365
Semi-minor axis of confidence ellipse (meter) 251
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.21764
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 56967041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-17 22:59:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM33.HNZ. 2018-05-17T22:53:43.17 3.0 undecidable manual S -0.24 0
IV.CESI.HHZ. 2018-05-17T22:53:38.19 0.3 undecidable manual S 298 0.1898 99 0.15 72
IV.T1221.EHZ. 2018-05-17T22:53:38.87 0.1 undecidable manual S 255 0.2176 96 0.03 97
IV.CSP1.EHZ. 2018-05-17T22:53:37.93 0.1 undecidable manual S 16 0.1835 99 0.08 98
IV.T1219.HNN. 2018-05-17T22:53:37.26 0.1 undecidable manual S 326 0.1691 102 -0.17 95
IV.MMO1.EHZ. 2018-05-17T22:53:36.45 0.1 undecidable manual S 97 0.1421 108 -0.21 94
IV.T1221.EHZ. 2018-05-17T22:53:35.19 0.6 positive manual P 255 0.2176 96 0.11 48
IV.FDMO.HHZ. 2018-05-17T22:53:35.94 0.3 undecidable manual S 344 0.125 113 -0.26 71
IV.CESI.HHZ. 2018-05-17T22:53:34.76 1.0 negative manual P 298 0.1898 99 0.15 24
IV.MC2.EHE. 2018-05-17T22:53:34.68 0.3 undecidable manual S 96 0.0405 154 0.31 71
IV.T1219.HNN. 2018-05-17T22:53:34.21 0.1 undecidable manual P 326 0.1691 102 -0.05 98
IV.FEMA.HNE. 2018-05-17T22:53:34.90 0.1 undecidable manual S 307 0.0773 134 -0.11 99
IV.NRCA.HHZ. 2018-05-17T22:53:34.77 0.1 undecidable manual S 190 0.0836 131 -0.37 93
IV.CSP1.EHZ. 2018-05-17T22:53:34.61 0.6 positive manual P 16 0.1835 99 0.11 48
IV.FDMO.HHZ. 2018-05-17T22:53:33.57 0.1 negative manual P 344 0.125 113 0.02 99
IV.MMO1.EHZ. 2018-05-17T22:53:33.86 0.1 positive manual P 97 0.1421 108 0.04 99
IV.NRCA.HHZ. 2018-05-17T22:53:32.96 0.1 positive manual P 190 0.0836 131 0.02 100
IV.MC2.EHE. 2018-05-17T22:53:32.65 0.1 undecidable manual P 96 0.0405 154 0.15 98
IV.FEMA.HNE. 2018-05-17T22:53:32.99 0.1 undecidable manual P 307 0.0773 134 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.4 0.00029041485 0.1024 AML other m 2018-05-17T22:53:35.55
IV.NRCA.HHE. ML:1.4 0.000322197 0.1024 AML other m 2018-05-17T22:53:35.55
IV.NRCA.HHN. ML:1.5 0.00038564895 0.0896 AML other m 2018-05-17T22:53:34.84
IV.NRCA.HNN. ML:1.5 0.00035172245 0.0768 AML other m 2018-05-17T22:53:34.84
IV.FDMO.HHN. ML:0.7 4.930165E-5 0.1792 AML other m 2018-05-17T22:53:36.29
IV.FDMO.HHE. ML:0.8 5.5653205E-5 0.2176 AML other m 2018-05-17T22:53:36.15
IV.CSP1.EHE. ML:0.8 3.8260535E-5 0.1536 AML other m 2018-05-17T22:53:38.05
IV.CSP1.EHN. ML:0.2 1.2459457E-5 0.2176 AML other m 2018-05-17T22:53:37.91
IV.CESI.HHE. ML:1 6.08691E-5 0.0896 AML other m 2018-05-17T22:53:38.53
IV.CESI.HHN. ML:1.3 0.00013769365 0.2176 AML other m 2018-05-17T22:53:38.51
IV.T1221.EHE. ML:0.4 1.452549E-5 0.0768 AML other m 2018-05-17T22:53:39.49
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