INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.6 on date 17-05-2018 and time 22:00:21 (Italy) in region 5 km SW Scheggino (PG)

A magnitude ML 0.6 earthquake occured in region: 5 km SW Scheggino (PG), on

  • 17-05-2018 20:00:21 (UTC)
  • 17-05-2018 22:00:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 12.78 at 8 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
Scheggino PG 5 461 461
Spoleto PG 7 38218 38679
Ferentillo TR 7 1913 40592
Sant'Anatolia di Narco PG 7 564 41156
Montefranco TR 10 1276 42432
Arrone TR 11 2763 45195
Vallo di Nera PG 12 364 45559
Polino TR 12 233 45792
Poggiodomo PG 13 117 45909
Monteleone di Spoleto PG 15 599 46508
Campello sul Clitunno PG 15 2442 48950
Terni TR 17 111501 160451
Labro RI 18 374 160825
Castel Ritaldi PG 18 3278 164103
Morro Reatino RI 18 373 164476
Cerreto di Spoleto PG 19 1075 165551
Acquasparta TR 19 4778 170329
Cascia PG 20 3217 173546
Rivodutri RI 20 1253 174799

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NE of Terni (111501 inhabitants)
31 Km S of Foligno (57155 inhabitants)
57 Km SE of Perugia (166134 inhabitants)
63 Km E of Viterbo (67173 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
76 Km W of Teramo (54892 inhabitants)
76 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
91 Km N of Roma (2864731 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 0.6 2018-05-17
20:00:21
42.68 12.78 8 2018-05-17
20:05:53
Sala Sismica INGV-Roma 56962581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-17 20:00:21 ± 0.03
Latitude 42.68 ± 0.00
Longitude 12.78 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 56962581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 599
Semi-minor axis of confidence ellipse (meter) 23
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 196
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 223
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.01
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.19425
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 3
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 56962581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-17 20:05:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.APEC.HHZ. 2018-05-17T20:00:50.31 3.0 undecidable manual S -0.29 0
IV.LIK.EHZ.01 2018-05-17T20:00:43.56 3.0 positive manual P 4.62 0
IV.ASSB.HHZ. 2018-05-17T20:00:29.54 3.0 undecidable manual P 0.48 0
IV.T1221.EHZ. 2018-05-17T20:00:29.36 0.3 undecidable manual S 16 0.1826 112 0 74
IV.MOMA.HHZ. 2018-05-17T20:00:29.79 0.6 undecidable manual S 308 0.1943 111 -0.01 49
IV.T1221.EHZ. 2018-05-17T20:00:26.13 0.6 undecidable manual P 16 0.1826 112 -0.01 49
IV.MOMA.HHZ. 2018-05-17T20:00:26.41 0.3 undecidable manual P 308 0.1943 111 0.01 73
OB.GAVE.EHZ. 2018-05-17T20:00:24.27 0.1 undecidable manual P 85 0.0845 132 0 100
IV.CESX.HHZ. 2018-05-17T20:00:24.53 3.0 positive manual P -0.27 0
IV.ARRO.EHZ. 2018-05-17T20:00:23.50 3.0 positive manual P -0.23 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OB.GAVE.EHE. ML:0.9 0.000119 1.48 AML other m 2018-05-17T20:00:27.96
OB.GAVE.EHN. ML:0.8 9.71E-5 0.28 AML other m 2018-05-17T20:00:27.33
IV.ARRO.EHE. ML:0.6 5.485E-5 0.46 AML other m 2018-05-17T20:00:27.43
IV.ARRO.EHN. ML:0.4 3.615E-5 0.22 AML other m 2018-05-17T20:00:27.91
IV.MOMA.HHN. ML:0.4 1.875E-5 0.52 AML other m 2018-05-17T20:00:31.55
IV.MOMA.HHE. ML:0.4 2.06E-5 0.84 AML other m 2018-05-17T20:00:31.39
IV.APEC.HHN. ML:1.4 2.615E-5 1 AML other m 2018-05-17T20:00:54.62
IV.APEC.HHE. ML:1.3 2.08E-5 1.26 AML other m 2018-05-17T20:00:54.85
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