INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.6 on date 21-02-2019 and time 11:33:10 (Italy) in region 7 km W Monte Cavallo (MC)

A magnitude ML 1.6 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 21-02-2019 10:33:10 (UTC)
  • 21-02-2019 11:33:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.98, 12.92 at 10 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
Monte Cavallo MC 7 145 145
Serravalle di Chienti MC 10 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 13 1458 3752
Muccia MC 15 915 4667
Visso MC 15 1107 5774
Fiordimonte MC 15 202 5976
Preci PG 15 724 6700
Valtopina PG 16 1398 8098
Pievebovigliana MC 16 866 8964
Nocera Umbra PG 18 5839 14803
Foligno PG 18 57155 71958
Trevi PG 18 8469 80427
Cerreto di Spoleto PG 18 1075 81502
Sefro MC 18 422 81924
Ussita MC 19 444 82368

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
74 Km W of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
96 Km S of Fano (60888 inhabitants)
100 Km SE of Arezzo (99543 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 2019-02-21
10:33:10
42.98 12.92 10 2019-02-21
10:36:38
Sala Sismica INGV-Roma 65758461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-21 10:33:10 ± 0.05
Latitude 42.98 ± 0.00
Longitude 12.92 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65758461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 323
Semi-minor axis of confidence ellipse (meter) 177
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 7
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.02248
Epicentral distance of station farthest from the epicenter (degree) 0.29318
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:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 65758461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-21 10:36:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2019-02-21T10:33:21.76 0.3 undecidable manual S 183 0.2932 50 -0.1 71
IV.SNTG.HHZ. 2019-02-21T10:33:21.31 0.3 undecidable manual S 3 0.2707 50 0.1 72
IV.MC2.EHZ. 2019-02-21T10:33:19.17 0.1 undecidable manual S 110 0.2113 112 -0.03 98
IV.CSP1.EHZ. 2019-02-21T10:33:19.97 0.1 undecidable manual S 63 0.2356 110 -0.09 96
IV.ASSB.HHZ. 2019-02-21T10:33:18.62 0.1 undecidable manual S 287 0.1979 114 -0.12 96
IV.GAVE.EHZ. 2019-02-21T10:33:17.00 0.1 positive manual P 183 0.2932 50 -0.02 97
IV.SNTG.HHZ. 2019-02-21T10:33:16.50 0.1 positive manual P 3 0.2707 50 -0.14 95
IV.FDMO.HHZ. 2019-02-21T10:33:16.43 0.1 undecidable manual S 67 0.134 123 -0.13 98
IV.CSP1.EHZ. 2019-02-21T10:33:16.02 0.1 positive manual P 63 0.2356 110 0.04 97
IV.ASSB.HHZ. 2019-02-21T10:33:15.27 0.1 positive manual P 287 0.1979 114 0.05 98
IV.MC2.EHZ. 2019-02-21T10:33:15.68 1.0 negative manual P 110 0.2113 112 0.2 24
IV.FDMO.HHZ. 2019-02-21T10:33:14.14 0.1 undecidable manual P 67 0.134 123 0.18 96
IT.MTCL.HGZ. 2019-02-21T10:33:14.34 0.1 undecidable manual S 81 0.0603 145 -0.13 99
IV.CESI.HHZ. 2019-02-21T10:33:13.75 0.1 undecidable manual S 334 0.0225 165 -0.11 100
IV.CESI.HHZ. 2019-02-21T10:33:12.64 0.1 undecidable manual P 334 0.0225 165 0.24 97
IT.MTCL.HGZ. 2019-02-21T10:33:12.99 0.1 positive manual P 81 0.0603 145 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0 0.00355 0.2 AML other m 2019-02-21T10:33:13.87
IV.CESI.HHN. ML:0 0.003265 1.58 AML other m 2019-02-21T10:33:14.86
IV.FDMO.HHN. ML:1.5 0.000301 1.02 AML other m 2019-02-21T10:33:17.00
IV.FDMO.HHE. ML:1.6 0.000373 0.42 AML other m 2019-02-21T10:33:18.30
IV.ASSB.HHN. ML:1.6 0.000285 1.16 AML other m 2019-02-21T10:33:19.67
IV.ASSB.HHE. ML:1.6 0.000255 0.3 AML other m 2019-02-21T10:33:19.52
IV.SNTG.HHN. ML:1.5 0.0001615 0.28 AML other m 2019-02-21T10:33:21.97
IV.SNTG.HHE. ML:1.5 0.000141 1.4 AML other m 2019-02-21T10:33:22.08
IV.GAVE.EHE. ML:1.7 0.000245 0.58 AML other m 2019-02-21T10:33:23.28
IV.GAVE.EHN. ML:1.8 0.0002675 1.16 AML other m 2019-02-21T10:33:23.09
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