INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.6 on date 16-09-2018 and time 19:58:34 (Italy) in region 2 km SE Cerreto di Spoleto (PG)

A magnitude ML 1.6 earthquake occured in region: 2 km SE Cerreto di Spoleto (PG), on

  • 16-09-2018 17:58:34 (UTC)
  • 16-09-2018 19:58:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 12.93 at 11 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
Cerreto di Spoleto PG 2 1075 1075
Vallo di Nera PG 7 364 1439
Sellano PG 9 1079 2518
Poggiodomo PG 10 117 2635
Sant'Anatolia di Narco PG 11 564 3199
Cascia PG 12 3217 6416
Preci PG 12 724 7140
Campello sul Clitunno PG 13 2442 9582
Scheggino PG 13 461 10043
Norcia PG 13 4957 15000
Trevi PG 17 8469 23469
Monteleone di Spoleto PG 17 599 24068
Spoleto PG 18 38218 62286
Visso MC 19 1107 63393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Foligno (57155 inhabitants)
36 Km NE of Terni (111501 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
65 Km W of Teramo (54892 inhabitants)
80 Km NE of Viterbo (67173 inhabitants)
91 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 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 1.6 2018-09-16
17:58:34
42.81 12.93 11 2018-09-16
18:08:29
Sala Sismica INGV-Roma 61015911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-16 17:58:34 ± 0.04
Latitude 42.81 ± 0.00
Longitude 12.93 ± 0.00
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 61015911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 274
Semi-minor axis of confidence ellipse (meter) 59
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 27
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) 0.55398
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 61015911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-16 18:08:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EPZF.HHZ. 2018-09-16T17:59:45.63 3.0 undecidable manual Pg 26.27 0
IV.CROCE.HHZ. 2018-09-16T17:59:42.20 3.0 negative manual Pn 11.99 0
IV.TDS.HHZ. 2018-09-16T17:59:15.79 3.0 undecidable manual Pn 7.17 0
SL.KOGS.BHZ. 2018-09-16T17:59:08.37 3.0 negative manual Pn 7.91 0
IV.PTCC.HHZ. 2018-09-16T17:58:54.33 3.0 negative manual Pg 12.81 0
IV.FIAM.HHZ. 2018-09-16T17:58:54.16 0.6 undecidable manual S 166 0.554 50 0.3 45
GU.CANO.HHZ. 2018-09-16T17:58:54.98 3.0 undecidable manual Sn 6.68 0
IV.RM33.EHZ. 2018-09-16T17:58:48.24 0.6 undecidable manual S 145 0.3624 50 0.08 49
IV.CSP1.EHE. 2018-09-16T17:58:47.94 0.6 undecidable manual S 35 0.3489 50 0.16 48
IV.ASSB.HHE. 2018-09-16T17:58:46.59 0.6 undecidable manual S 320 0.3103 50 -0.03 50
IV.MML1.HNN. 2018-09-16T17:58:46.96 0.6 undecidable manual S 5 0.3094 50 0.36 46
IV.ARRO.EHZ. 2018-09-16T17:58:45.05 0.6 undecidable manual S 208 0.2572 50 0.01 50
IV.FIAM.HHZ. 2018-09-16T17:58:45.56 1.0 undecidable manual P 166 0.554 50 -0.29 22
IV.FDMO.HHZ. 2018-09-16T17:58:44.98 0.1 undecidable manual S 26 0.2572 50 -0.09 99
IV.LIK.EHZ.01 2018-09-16T17:58:44.76 3.0 negative manual Pg 14.37 0
IV.MC2.EHZ. 2018-09-16T17:58:44.02 0.6 undecidable manual S 61 0.2167 50 0.17 49
IV.LNSS.HHZ. 2018-09-16T17:58:43.73 0.3 undecidable manual S 158 0.2176 50 -0.16 74
IV.CESI.HHZ. 2018-09-16T17:58:43.23 0.6 undecidable manual S 354 0.2005 50 -0.14 49
IV.CAMP.HHZ. 2018-09-16T17:58:43.99 1.0 undecidable manual P 127 0.4425 50 0.05 24
IV.CSP1.EHE. 2018-09-16T17:58:42.20 0.1 undecidable manual P 35 0.3489 50 -0.14 96
IV.FEMA.HNE. 2018-09-16T17:58:42.68 0.6 undecidable manual S 29 0.179 118 -0.06 50
IV.RM33.EHZ. 2018-09-16T17:58:42.56 0.1 undecidable manual P 145 0.3624 50 0 99
IV.NRCA.HHZ. 2018-09-16T17:58:41.20 0.3 undecidable manual S 78 0.1367 125 -0.16 75
IV.MML1.HNN. 2018-09-16T17:58:41.67 0.1 undecidable manual P 5 0.3094 50 0.01 99
GU.RNCA.HHZ. 2018-09-16T17:58:41.35 3.0 undecidable manual Sn 0.42 0
IV.ASSB.HHE. 2018-09-16T17:58:41.54 0.1 undecidable manual P 320 0.3103 50 -0.13 97
IV.ARRO.EHZ. 2018-09-16T17:58:40.68 0.1 undecidable manual P 208 0.2572 50 -0.08 99
IV.LNSS.HHZ. 2018-09-16T17:58:40.00 0.1 undecidable manual P 158 0.2176 50 -0.09 100
IV.FDMO.HHZ. 2018-09-16T17:58:40.69 0.1 undecidable manual P 26 0.2572 50 -0.08 99
OB.GAVE.EHZ. 2018-09-16T17:58:40.75 0.3 undecidable manual S 194 0.116 130 0.02 77
IV.MC2.EHZ. 2018-09-16T17:58:40.17 0.3 undecidable manual P 61 0.2167 50 0.1 74
IV.FEMA.HNE. 2018-09-16T17:58:39.53 0.1 undecidable manual P 29 0.179 118 0.1 100
IV.CESI.HHZ. 2018-09-16T17:58:39.89 0.1 undecidable manual P 354 0.2005 50 0.1 100
OB.GAVE.EHZ. 2018-09-16T17:58:38.43 0.1 undecidable manual P 194 0.116 130 0.16 100
IV.NRCA.HHZ. 2018-09-16T17:58:38.61 0.6 undecidable manual P 78 0.1367 125 -0.02 51
GU.GORR.HHZ. 2018-09-16T17:58:36.25 3.0 undecidable manual Sn -2.6 0
IV.NDIM.HNZ. 2018-09-16T17:58:35.69 3.0 undecidable manual Sg 0.81 0
CH.BERNI.HHZ. 2018-09-16T17:58:35.46 3.0 negative manual Pn -0.65 0
IV.ARVD.HHZ. 2018-09-16T17:58:33.27 3.0 undecidable manual Sg -0.74 0
IV.NDIM.HHZ. 2018-09-16T17:58:13.43 3.0 positive manual Pn -1.35 0
GU.GSCL.HHZ. 2018-09-16T17:58:10.75 3.0 positive manual P 2.51 0
IV.MURB.HHZ. 2018-09-16T17:58:09.75 3.0 undecidable manual P -0.6 0
IV.PE3.EHZ. 2018-09-16T17:58:07.77 3.0 negative manual P -2.87 0
IV.CRE.HHZ. 2018-09-16T17:58:02.44 3.0 undecidable manual P -3.31 0
IV.CSNT.HHZ. 2018-09-16T17:57:59.84 3.0 positive manual P -1.13 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OB.GAVE.EHN. ML:1.9 0.000895 0.26 AML other m 2018-09-16T17:58:41.38
IV.NRCA.HHN. ML:1.8 0.000681 0.1 AML other m 2018-09-16T17:58:41.40
IV.NRCA.HHE. ML:1.7 0.0005275 0.36 AML other m 2018-09-16T17:58:41.76
OB.GAVE.HNN. ML:1.5 0.0003595 0.68 AML other m 2018-09-16T17:58:42.51
OB.GAVE.EHE. ML:1.9 0.0008265 0.12 AML other m 2018-09-16T17:58:42.22
OB.GAVE.HNE. ML:1.9 0.0008305 0.12 AML other m 2018-09-16T17:58:42.22
IV.CESI.HHN. ML:2.1 0.00089 0.5 AML other m 2018-09-16T17:58:43.53
IV.CESI.HHE. ML:1.8 0.0003635 0.44 AML other m 2018-09-16T17:58:43.60
IV.LNSS.HHN. ML:2.2 0.000855 0.14 AML other m 2018-09-16T17:58:43.89
IV.LNSS.HHE. ML:2 0.0006765 1.84 AML other m 2018-09-16T17:58:44.05
IV.FDMO.HHN. ML:2.2 0.0007625 0.14 AML other m 2018-09-16T17:58:45.18
IV.ARRO.EHN. ML:1.4 0.0001335 0.64 AML other m 2018-09-16T17:58:45.26
IV.FDMO.HHE. ML:2.1 0.000598 0.34 AML other m 2018-09-16T17:58:45.15
IV.ARRO.EHE. ML:1.4 0.000131 1.26 AML other m 2018-09-16T17:58:45.86
IV.RM33.EHN. ML:1.6 0.0001245 0.38 AML other m 2018-09-16T17:58:49.16
IV.RM33.EHE. ML:1.5 0.0001119 0.54 AML other m 2018-09-16T17:58:49.64
IV.CAMP.HHN. ML:0.9 1.97E-5 1.04 AML other m 2018-09-16T17:58:53.29
IV.MURB.HHE. ML:1.4 5.41E-5 0.64 AML other m 2018-09-16T17:58:55.14
IV.FIAM.HHE. ML:1.3 3.915E-5 0.44 AML other m 2018-09-16T17:58:55.11
IV.CAMP.HHE. ML:0.9 1.7985E-5 0.68 AML other m 2018-09-16T17:58:55.69
IV.MURB.HHN. ML:1.5 6.26E-5 0.16 AML other m 2018-09-16T17:58:55.40
IV.FIAM.HHN. ML:1.3 3.81E-5 0.34 AML other m 2018-09-16T17:58:58.67
IV.ARVD.HHN. ML:1.3 3.055E-5 0.34 AML other m 2018-09-16T17:59:00.35
IV.ARVD.HHE. ML:1.4 3.505E-5 0.2 AML other m 2018-09-16T17:59:00.54
IV.NDIM.HHN. ML:3.7 0.0007035 1.46 AML other m 2018-09-16T17:59:02.16
IV.NDIM.HHE. ML:3.8 0.0008545 0.08 AML other m 2018-09-16T17:59:02.91
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
Waveforms Seismic signals in full SEED format Download