Earthquake with magnitude of ML 0.1 on date 27-02-2017 and time 20:49:26 (UTC) in region 6 km SE Cerreto di Spoleto (PG)

A magnitude ML 0.1 earthquake occured in region: 6 km SE Cerreto di Spoleto (PG), on

  • 27-02-2017 20:49:26 (UTC)
  • 27-02-2017 21:49:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.78, 12.97 at 5 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 6 1075 1075
Cascia PG 7 3217 4292
Poggiodomo PG 8 117 4409
Vallo di Nera PG 9 364 4773
Norcia PG 10 4957 9730
Sant'Anatolia di Narco PG 12 564 10294
Preci PG 13 724 11018
Sellano PG 13 1079 12097
Scheggino PG 13 461 12558
Monteleone di Spoleto PG 14 599 13157
Campello sul Clitunno PG 17 2442 15599
Spoleto PG 20 38218 53817
Visso MC 20 1107 54924
Castelsantangelo sul Nera MC 20 281 55205

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SE of Foligno (57155 inhabitants)
36 Km NE of Terni (111501 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
81 Km NE of Viterbo (67173 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
92 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 0.1 2017-02-27
20:49:26
42.78 12.97 5 2017-02-27
20:55:49
Sala Sismica INGV-Roma 41713481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-27 20:49:26 ± 0.11
Latitude 42.78 ± 0.00
Longitude 12.97 ± 0.00
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 41713481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 128
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.49013
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.1

Field Value
Value 0.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 41713481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-02-27 20:55:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2017-02-27T20:49:37.21 0.6 undecidable manual P 108 0.4901 50 0.23 44
IV.T1220.EHZ. 2017-02-27T20:49:33.36 1.0 negative manual P 15 0.3435 97 -0.68 20
IV.FDMO.HHZ. 2017-02-27T20:49:32.61 1.0 undecidable manual P 18 0.2725 99 0.13 24
IV.T1216.EHZ. 2017-02-27T20:49:31.20 0.1 undecidable manual S 17 0.1178 110 0.02 100
IV.T1212.EHZ. 2017-02-27T20:49:29.24 0.1 undecidable manual S 116 0.0603 125 0.06 100
IV.T1216.EHZ. 2017-02-27T20:49:29.05 0.6 positive manual P 17 0.1178 110 -0.09 49
IV.T1217.EHZ. 2017-02-27T20:49:29.52 0.1 undecidable manual S 204 0.0719 120 -0.04 100
IV.T1215.EHZ. 2017-02-27T20:49:29.96 0.1 undecidable manual S 288 0.0782 118 0.17 97
IV.T1217.EHZ. 2017-02-27T20:49:28.05 0.6 negative manual P 204 0.0719 120 -0.16 49
IV.T1215.EHZ. 2017-02-27T20:49:28.23 0.3 undecidable manual P 288 0.0782 118 -0.11 74
IV.T1212.EHZ. 2017-02-27T20:49:28.02 1.0 positive manual P 116 0.0603 125 0.04 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1216.EHE. ML:0.1 1.4162915E-5 0.3456 AML other m 2017-02-27T20:49:31.70
IV.T1216.EHN. ML:0.2 2.02911555E-5 0.1792 AML other m 2017-02-27T20:49:31.71
IV.T1217.EHE. ML:0 2.75863225E-5 0.2304 AML other m 2017-02-27T20:49:29.76
IV.T1217.HNE. ML:0 3.3873035E-5 0.4736 AML other m 2017-02-27T20:49:29.88
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