Earthquake with magnitude of ML 0.5 on date 05-02-2021 and time 13:44:24 (UTC) in region 4 km E Cerreto di Spoleto (PG)

A magnitude ML 0.5 earthquake occured in region: 4 km E Cerreto di Spoleto (PG), on

  • 05-02-2021 13:44:24 (UTC)
  • 05-02-2021 14:44:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.83, 12.97 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 4 1075 1075
Sellano PG 7 1079 2154
Preci PG 8 724 2878
Vallo di Nera PG 11 364 3242
Norcia PG 11 4957 8199
Cascia PG 13 3217 11416
Poggiodomo PG 14 117 11533
Visso MC 15 1107 12640
Sant'Anatolia di Narco PG 15 564 13204
Campello sul Clitunno PG 15 2442 15646
Castelsantangelo sul Nera MC 17 281 15927
Scheggino PG 17 461 16388
Monte Cavallo MC 18 145 16533
Trevi PG 18 8469 25002
Ussita MC 19 444 25446
Monteleone di Spoleto PG 20 599 26045

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
63 Km W of Teramo (54892 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 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
Reviewed
Rev100
ML 0.5 2021-02-05
13:44:24
42.83 12.97 11 2021-02-05
13:53:19
Sala Sismica INGV-Roma 86854481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-05 13:44:24 ± 0.07
Latitude 42.83 ± 0.00
Longitude 12.97 ± 0.01
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 86854481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 517
Semi-minor axis of confidence ellipse (meter) 102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 98
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 13
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
Epicentral distance of station farthest from the epicenter (degree) 0.23562
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 86854481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-05 13:53:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2021-02-05T13:44:39.95 3.0 undecidable manual S -2.42 0
IV.LNSS.HHZ. 2021-02-05T13:44:33.68 0.3 undecidable manual S 167 0.2356 50 -0.07 71
IV.FDMO.HHZ. 2021-02-05T13:44:33.43 0.3 undecidable manual S 23 0.223 50 0.04 74
IV.MC2.EHZ. 2021-02-05T13:44:32.52 0.3 undecidable manual S 64 0.1817 50 0.36 69
IV.GAVE.EHZ. 2021-02-05T13:44:31.17 0.3 undecidable manual S 201 0.1493 123 0.05 74
IV.CESI.HHZ. 2021-02-05T13:44:31.97 0.1 undecidable manual S 346 0.179 50 -0.1 99
IV.NRCA.HHZ. 2021-02-05T13:44:29.58 0.1 undecidable manual S 89 0.1088 132 -0.31 96
IV.FDMO.HHZ. 2021-02-05T13:44:29.47 0.6 positive manual P 23 0.223 50 -0.06 48
IV.LNSS.HHZ. 2021-02-05T13:44:29.62 0.3 undecidable manual P 167 0.2356 50 -0.12 71
IV.MC2.EHZ. 2021-02-05T13:44:29.24 0.6 undecidable manual P 64 0.1817 50 0.41 45
IV.CESI.HHZ. 2021-02-05T13:44:28.79 0.1 positive manual P 346 0.179 50 0.02 98
IV.GAVE.EHZ. 2021-02-05T13:44:28.37 0.1 positive manual P 201 0.1493 123 0.15 96
IV.NRCA.HHZ. 2021-02-05T13:44:27.49 0.1 undecidable manual P 89 0.1088 132 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.7 5.11E-5 0.8 AML other m 2021-02-05T13:44:29.64
IV.NRCA.HHE. ML:0.7 6.025E-5 0.14 AML other m 2021-02-05T13:44:29.64
IV.CESI.HHE. ML:0.3 1.734507E-5 0.1792 AML other m 2021-02-05T13:44:32.60
IV.CESI.HHN. ML:0.5 2.346953E-5 0.1856 AML other m 2021-02-05T13:44:32.06
IV.FDMO.HHE. ML:0.4 1.590857E-5 0.1152 AML other m 2021-02-05T13:44:33.42
IV.FDMO.HHN. ML:0.5 2.213166E-5 0.16 AML other m 2021-02-05T13:44:33.61
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