Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 19-01-2021 and time 12:44:38 (UTC) in region 8 km E Valfabbrica (PG)

A magnitude ML 0.6 earthquake occured in region: 8 km E Valfabbrica (PG), on

  • 19-01-2021 12:44:38 (UTC)
  • 19-01-2021 13:44:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.18, 12.69 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valfabbrica PG 8 3389 3389
Gualdo Tadino PG 10 15208 18597
Nocera Umbra PG 11 5839 24436
Assisi PG 13 28299 52735
Fossato di Vico PG 14 2840 55575
Valtopina PG 14 1398 56973
Bastia Umbra PG 17 21874 78847
Sigillo PG 18 2404 81251
Fiuminata MC 20 1402 82653

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Foligno (57155 inhabitants)
26 Km E of Perugia (166134 inhabitants)
69 Km N of Terni (111501 inhabitants)
73 Km E of Arezzo (99543 inhabitants)
79 Km SW of Fano (60888 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
83 Km S of Pesaro (94582 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
99 Km S of Rimini (147750 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 0.6 2021-01-19
12:44:38		 43.18 12.69 10 2021-01-19
13:10:44		 Sala Sismica INGV-Roma 86378771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-19 12:44:38 ± 0.12
Latitude 43.18 ± 0.01
Longitude 12.69 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86378771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 778
Semi-minor axis of confidence ellipse (meter) 563
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 780
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.59175
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 86378771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-19 13:10:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2021-01-19T12:46:00.54 3.0 undecidable manual Pg 24.299999 0
IV.QLNO.HHZ. 2021-01-19T12:45:50.54 3.0 undecidable manual Sg 16.940001 0
IV.CAGR.HHZ. 2021-01-19T12:45:44.54 3.0 undecidable manual Pn 0.37 0
IV.PTRJ.HNZ. 2021-01-19T12:45:42.80 3.0 undecidable manual Sn 0.18 0
IV.VOBA.HNZ. 2021-01-19T12:45:40.35 3.0 undecidable manual Sg 3.07 0
GU.BLANC.HHZ. 2021-01-19T12:45:34.07 3.0 undecidable manual Pg 12.66 0
IV.SARZ.HHZ. 2021-01-19T12:45:34.69 3.0 undecidable manual Sn 0.75 0
IV.SGTA.HNZ. 2021-01-19T12:45:32.37 3.0 undecidable manual Pg 19.16 0
IV.AGLI.HHZ. 2021-01-19T12:45:20.69 3.0 undecidable manual Pg 21.08 0
IV.TOLF.HHZ. 2021-01-19T12:45:11.86 3.0 undecidable manual Sn 4.37 0
IV.RIBO.EHZ.01 2021-01-19T12:45:02.12 3.0 undecidable manual Sg 2.98 0
IV.MF5.EHZ. 2021-01-19T12:44:58.87 0.3 undecidable manual S 109 0.5918 50 -0.29 64
IV.CASP.HHZ. 2021-01-19T12:44:54.57 3.0 undecidable manual Sn -5.49 0
IV.MF5.EHZ. 2021-01-19T12:44:50.67 0.6 undecidable manual P 109 0.5918 50 0.09 45
IV.SRES.HHZ. 2021-01-19T12:44:48.30 3.0 undecidable manual Pn 2.15 0
GU.GSCL.HHZ. 2021-01-19T12:44:46.18 3.0 negative manual P -2 0
IV.MURB.HHZ. 2021-01-19T12:44:45.61 0.3 undecidable manual S 305 0.1484 121 0.09 73
IV.ASSB.HHZ. 2021-01-19T12:44:45.34 0.3 undecidable manual S 190 0.1385 122 0.16 72
IV.FOSV.EHZ. 2021-01-19T12:44:44.95 0.3 undecidable manual S 23 0.1259 125 0.15 72
IV.MURB.HHZ. 2021-01-19T12:44:42.72 0.1 undecidable manual P 305 0.1484 121 0.01 99
IV.ATCC.EHE. 2021-01-19T12:44:42.08 0.3 undecidable manual S 279 0.0387 156 -0.49 68
IV.ASSB.HHZ. 2021-01-19T12:44:42.74 0.3 negative manual P 190 0.1385 122 0.22 71
IV.FOSV.EHZ. 2021-01-19T12:44:42.46 0.6 undecidable manual P 23 0.1259 125 0.17 48
IV.ATCC.EHE. 2021-01-19T12:44:40.95 0.1 undecidable manual P 279 0.0387 156 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHN. ML:0.8 4.995E-5 0.2 AML other m 2021-01-19T12:44:45.77
IV.MURB.HHE. ML:0.9 7.325E-5 0.42 AML other m 2021-01-19T12:44:45.78
GU.GSCL.HHN. ML:2.8 0.0001785 0.08 AML other m 2021-01-19T12:44:48.10
GU.GSCL.HHE. ML:2.6 0.0001173 0.08 AML other m 2021-01-19T12:44:48.21
IV.VOBA.HNE. ML:3.8 0.000643 0.08 AML other m 2021-01-19T12:45:43.52
IV.VOBA.HNN. ML:4 0.001095 0.06 AML other m 2021-01-19T12:45:43.53
IV.FOSV.EHE. ML:0.3 2.081514E-5 0.2176 AML other m 2021-01-19T12:44:45.00
IV.FOSV.EHN. ML:0.3 1.810692E-5 0.1024 AML other m 2021-01-19T12:44:45.69
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