ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.4 on date 21-03-2019 and time 03:14:02 (Italy) in region 5 km W Sellano (PG)

A magnitude ML 1.4 earthquake occured in region: 5 km W Sellano (PG), on

  • 21-03-2019 02:14:02 (UTC)
  • 21-03-2019 03:14:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9, 12.87 at 14 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
Sellano PG 5 1079 1079
Cerreto di Spoleto PG 10 1075 2154
Trevi PG 10 8469 10623
Campello sul Clitunno PG 12 2442 13065
Preci PG 14 724 13789
Vallo di Nera PG 15 364 14153
Foligno PG 15 57155 71308
Monte Cavallo MC 15 145 71453
Montefalco PG 18 5679 77132
Castel Ritaldi PG 18 3278 80410
Visso MC 18 1107 81517
Sant'Anatolia di Narco PG 19 564 82081
Spello PG 19 8645 90726
Valtopina PG 20 1398 92124

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
45 Km SE of Perugia (166134 inhabitants)
73 Km W of Teramo (54892 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
82 Km NE of Viterbo (67173 inhabitants)
96 Km SW of Ancona (100861 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 1.4 2019-03-21
02:14:02
42.9 12.87 14 2019-03-21
02:25:44
Sala Sismica INGV-Roma 66741961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-21 02:14:02 ± 0.1
Latitude 42.90 ± 0.00
Longitude 12.87 ± 0.01
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66741961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 328
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.45955
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 66741961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-21 02:25:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2019-03-21T02:14:15.01 0.1 undecidable manual S 90 0.3345 96 0.32 89
IV.EL6.EHZ. 2019-03-21T02:14:11.60 0.1 undecidable manual P 22 0.4596 94 0.02 93
IV.FDMO.HHZ. 2019-03-21T02:14:10.93 0.1 undecidable manual S 50 0.2086 103 -0.07 97
IV.NRCA.HHZ. 2019-03-21T02:14:10.39 0.1 undecidable manual S 111 0.1916 105 -0.12 96
IV.MMO1.EHZ. 2019-03-21T02:14:09.47 0.1 undecidable manual P 90 0.3345 96 0.02 95
IV.SNTG.HHZ. 2019-03-21T02:14:09.73 0.1 undecidable manual P 8 0.357 95 -0.1 93
IV.ARRO.EHZ. 2019-03-21T02:14:09.11 0.1 undecidable manual P 193 0.331 96 -0.27 90
IV.MOMA.HHZ. 2019-03-21T02:14:08.11 0.1 undecidable manual P 246 0.2401 100 0.27 93
IV.CESI.HHZ. 2019-03-21T02:14:08.11 0.1 undecidable manual S 14 0.1061 127 -0.1 98
IV.FDMO.HHZ. 2019-03-21T02:14:07.50 0.1 undecidable manual P 50 0.2086 103 0.19 94
IV.NRCA.HHZ. 2019-03-21T02:14:06.90 0.3 undecidable manual P 111 0.1916 105 -0.13 72
IV.CESI.HHZ. 2019-03-21T02:14:05.71 0.1 undecidable manual P 14 0.1061 127 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.2 0.000162 0.42 AML other m 2019-03-21T02:14:08.48
IV.CESI.HHN. ML:1.8 0.000633 0.22 AML other m 2019-03-21T02:14:08.51
IV.NRCA.HHN. ML:1.4 0.000171 0.52 AML other m 2019-03-21T02:14:10.52
IV.NRCA.HHE. ML:1.3 0.0001295 1.56 AML other m 2019-03-21T02:14:10.81
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