INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.9 on date 16-05-2018 and time 07:21:36 (Italy) in region 6 km SW Preci (PG)

A magnitude ML 0.9 earthquake occured in region: 6 km SW Preci (PG), on

  • 16-05-2018 05:21:36 (UTC)
  • 16-05-2018 07:21:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.01 at 9 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
Preci PG 6 724 724
Norcia PG 8 4957 5681
Cerreto di Spoleto PG 8 1075 6756
Sellano PG 10 1079 7835
Cascia PG 12 3217 11052
Visso MC 13 1107 12159
Castelsantangelo sul Nera MC 14 281 12440
Vallo di Nera PG 14 364 12804
Poggiodomo PG 15 117 12921
Ussita MC 16 444 13365
Sant'Anatolia di Narco PG 18 564 13929
Monte Cavallo MC 18 145 14074
Campello sul Clitunno PG 19 2442 16516
Scheggino PG 20 461 16977

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 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 0.9 2018-05-16
05:21:36
42.83 13.01 9 2018-05-16
05:30:03
Sala Sismica INGV-Roma 56912141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-16 05:21:36 ± 0.18
Latitude 42.83 ± 0.00
Longitude 13.01 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 56912141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
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) 126
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) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.24012
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 56912141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-16 05:30:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MBFT.HNZ. 2018-05-16T05:23:09.56 3.0 undecidable manual Pg 12.54 0
IV.PIPA.HHZ. 2018-05-16T05:23:01.21 3.0 undecidable manual Pg 11.73 0
IV.ILLI.HHZ. 2018-05-16T05:22:57.13 3.0 positive manual Pn 3.75 0
IV.SBPO.HNZ. 2018-05-16T05:22:49.28 3.0 undecidable manual Sg 4.54 0
IV.MILN.HNZ. 2018-05-16T05:22:44.50 3.0 negative manual Pg 13.98 0
IV.VULT.HHZ. 2018-05-16T05:22:37.01 3.0 undecidable manual Pg 11.21 0
IV.APPI.EHZ. 2018-05-16T05:22:35.68 3.0 undecidable manual Pg 5.67 0
SI.BOSI.HHZ. 2018-05-16T05:22:35.82 3.0 negative manual Pg 5.91 0
IV.EUCT.HNZ. 2018-05-16T05:22:31.03 3.0 positive manual Pn 1.96 0
IV.BDI.HHZ. 2018-05-16T05:22:31.52 3.0 undecidable manual Sn -3.27 0
IV.SLCN.HHZ. 2018-05-16T05:22:31.09 3.0 undecidable manual Pg -1.05 0
NI.POLC.HHZ. 2018-05-16T05:22:20.73 3.0 positive manual Pn -0.24 0
IV.VVLD.HHZ. 2018-05-16T05:22:05.61 3.0 undecidable manual Pg 1.19 0
IV.ARRO.EHZ. 2018-05-16T05:22:03.15 3.0 undecidable manual S -1.11 0
IV.SFI.EHZ. 2018-05-16T05:21:54.60 3.0 positive manual Pg -1.79 0
IV.T1219.HNN. 2018-05-16T05:21:46.12 0.3 undecidable manual S 358 0.2257 109 0.17 71
IV.MMO1.EHZ. 2018-05-16T05:21:46.40 0.3 undecidable manual S 73 0.2401 108 -0.05 72
IV.FDMO.HHZ. 2018-05-16T05:21:45.52 0.1 undecidable manual S 15 0.2131 110 0.02 97
IV.RSM2.HHZ. 2018-05-16T05:21:45.73 3.0 undecidable manual P -5.68 0
IV.CESI.HHE. 2018-05-16T05:21:44.70 0.3 undecidable manual S 336 0.1925 112 -0.04 73
OB.GAVE.HNE. 2018-05-16T05:21:43.80 0.3 undecidable manual S 213 0.1628 116 0.09 73
IV.T1219.HNN. 2018-05-16T05:21:42.11 0.3 undecidable manual P 358 0.2257 109 0.06 72
IV.T1221.EHE. 2018-05-16T05:21:42.37 0.1 undecidable manual S 284 0.1259 122 -0.09 98
IV.FDMO.HHZ. 2018-05-16T05:21:41.87 0.3 undecidable manual P 15 0.2131 110 0.08 72
IV.CESI.HHE. 2018-05-16T05:21:41.06 0.3 undecidable manual P 336 0.1925 112 -0.29 69
IV.MC2.EHZ. 2018-05-16T05:21:41.12 0.3 undecidable manual P 58 0.152 118 0.58 65
IV.MMO1.EHZ. 2018-05-16T05:21:41.86 0.3 undecidable manual P 73 0.2401 108 -0.48 66
IV.T1221.EHE. 2018-05-16T05:21:40.01 0.1 undecidable manual P 284 0.1259 122 -0.02 99
IV.NRCA.HHZ. 2018-05-16T05:21:40.88 0.1 undecidable manual S 87 0.0737 137 -0.02 100
OB.GAVE.HNE. 2018-05-16T05:21:40.89 0.3 undecidable manual P 213 0.1628 116 0.13 72
IV.NRCA.HHZ. 2018-05-16T05:21:39.02 0.3 undecidable manual P 87 0.0737 137 -0.12 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.9 5.3E-5 0.2 AML other m 2018-05-16T05:21:45.92
IV.FDMO.HHE. ML:0.9 4.86E-5 0.22 AML other m 2018-05-16T05:21:45.94
IV.EUCT.HNN. ML:4.4 0.001535 0.32 AML other m 2018-05-16T05:22:36.29
IV.EUCT.HNE. ML:4.3 0.0011655 0.74 AML other m 2018-05-16T05:22:37.00
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