Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 25-02-2021 and time 01:22:17 (UTC) in region 3 km S Fossato di Vico (PG)

A magnitude ML 1.5 earthquake occured in region: 3 km S Fossato di Vico (PG), on

  • 25-02-2021 01:22:17 (UTC)
  • 25-02-2021 02:22:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.27, 12.76 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
Fossato di Vico PG 3 2840 2840
Gualdo Tadino PG 5 15208 18048
Sigillo PG 7 2404 20452
Costacciaro PG 11 1216 21668
Fabriano AN 14 31480 53148
Esanatoglia MC 15 2034 55182
Fiuminata MC 16 1402 56584
Scheggia e Pascelupo PG 17 1393 57977
Gubbio PG 18 32216 90193
Nocera Umbra PG 18 5839 96032
Valfabbrica PG 18 3389 99421
Cerreto d'Esi AN 19 3817 103238

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Foligno (57155 inhabitants)
35 Km NE of Perugia (166134 inhabitants)
67 Km SW of Fano (60888 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
72 Km S of Pesaro (94582 inhabitants)
75 Km E of Arezzo (99543 inhabitants)
79 Km N of Terni (111501 inhabitants)
90 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 1.5 2021-02-25
01:22:17		 43.27 12.76 11 2021-02-25
01:30:22		 Sala Sismica INGV-Roma 87465991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-25 01:22:17 ± 0.06
Latitude 43.27 ± 0.00
Longitude 12.76 ± 0.00
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 87465991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 421
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 87465991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-25 01:30:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-02-25T01:22:35.21 0.3 undecidable manual S 150 0.5054 50 0.45 64
IV.CSP1.EHZ. 2021-02-25T01:22:31.17 0.3 undecidable manual S 119 0.3669 50 0.51 65
IV.APEC.HHZ. 2021-02-25T01:22:31.82 0.1 undecidable manual S 319 0.3813 50 0.73 79
IV.MNTT.EHZ. 2021-02-25T01:22:30.91 3.0 negative manual P 0.76 0
IV.NARO.HHZ. 2021-02-25T01:22:30.62 0.3 undecidable manual S 339 0.366 50 0 72
IV.MPAG.EHZ. 2021-02-25T01:22:30.63 0.1 undecidable manual S 359 0.3588 50 0.22 92
IV.PIEI.HHZ. 2021-02-25T01:22:29.01 0.1 undecidable manual S 328 0.313 50 -0.06 96
IV.MF5.EHZ. 2021-02-25T01:22:29.50 3.0 positive manual P 0.48 0
IV.PARC.HHZ. 2021-02-25T01:22:28.21 3.0 positive manual P 0.19 0
IV.CESI.HHZ. 2021-02-25T01:22:28.29 0.3 undecidable manual S 159 0.2842 50 0.09 72
IV.MMO1.EHZ. 2021-02-25T01:22:27.86 0.1 undecidable manual P 132 0.5531 50 -0.29 88
IV.EL6.EHZ. 2021-02-25T01:22:27.54 0.1 undecidable manual S 76 0.2518 50 0.28 93
IV.NRCA.HHZ. 2021-02-25T01:22:27.02 0.1 undecidable manual P 150 0.5054 50 -0.32 88
IV.ARVD.HHZ. 2021-02-25T01:22:27.64 0.1 undecidable manual S 29 0.2617 50 0.11 96
IV.GUMA.HHZ. 2021-02-25T01:22:27.27 3.0 negative manual P 0.36 0
IV.PE3.EHZ. 2021-02-25T01:22:26.83 0.3 undecidable manual P 336 0.4676 50 0.14 69
IV.FRON.EHZ. 2021-02-25T01:22:26.85 0.3 undecidable manual S 354 0.2491 50 -0.31 69
IV.CSP1.EHZ. 2021-02-25T01:22:25.05 0.1 undecidable manual P 119 0.3669 50 0.08 95
IV.APEC.HHZ. 2021-02-25T01:22:25.15 0.1 undecidable manual P 319 0.3813 50 -0.07 95
IV.NARO.HHZ. 2021-02-25T01:22:24.68 0.1 undecidable manual P 339 0.366 50 -0.26 91
IV.MPAG.EHZ. 2021-02-25T01:22:24.56 0.1 undecidable manual P 359 0.3588 50 -0.27 92
IV.SSFR.HNZ. 2021-02-25T01:22:24.59 0.1 undecidable manual S 4 0.1664 120 0.02 100
IV.FDMO.HHZ. 2021-02-25T01:22:24.14 0.1 undecidable manual P 135 0.3318 50 -0.22 93
IV.ATFO.HHZ. 2021-02-25T01:22:24.82 0.3 undecidable manual S 305 0.17 119 0.12 73
IV.ATPI.EHZ. 2021-02-25T01:22:24.06 0.1 undecidable manual P 305 0.3193 50 -0.09 96
IV.MURB.HHZ. 2021-02-25T01:22:24.92 0.1 undecidable manual S 268 0.1745 118 0.07 99
IV.ARVD.HHZ. 2021-02-25T01:22:23.12 0.1 undecidable manual P 29 0.2617 50 -0.04 98
IV.ATCC.EHZ. 2021-02-25T01:22:23.36 0.1 undecidable manual S 227 0.1241 127 0.15 98
IV.CESI.HHZ. 2021-02-25T01:22:23.02 0.1 undecidable manual P 159 0.2842 50 -0.53 87
IV.PIEI.HHZ. 2021-02-25T01:22:23.76 0.1 undecidable manual P 328 0.313 50 -0.29 92
IV.EL6.EHZ. 2021-02-25T01:22:23.11 0.1 undecidable manual P 76 0.2518 50 0.11 97
IV.FRON.EHZ. 2021-02-25T01:22:22.75 0.1 undecidable manual P 354 0.2491 50 -0.2 95
IV.ATFO.HHZ. 2021-02-25T01:22:21.50 0.1 undecidable manual P 305 0.17 119 -0.03 100
IV.MURB.HHZ. 2021-02-25T01:22:21.64 0.1 undecidable manual P 268 0.1745 118 0.03 100
IV.SSFR.HNZ. 2021-02-25T01:22:21.47 0.1 undecidable manual P 4 0.1664 120 0.02 100
IV.ATCC.EHZ. 2021-02-25T01:22:20.83 0.1 undecidable manual P 227 0.1241 127 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:2 0.0010225 0.12 AML other m 2021-02-25T01:22:23.51
IV.ATCC.EHE. ML:2 0.0010455 0.22 AML other m 2021-02-25T01:22:23.51
IV.ATFO.HHN. ML:1.4 0.0001675 1.2 AML other m 2021-02-25T01:22:25.02
IV.SSFR.HHE. ML:2.1 0.001004 0.66 AML other m 2021-02-25T01:22:25.47
IV.MURB.HHE. ML:1.5 0.0002615 0.82 AML other m 2021-02-25T01:22:25.69
IV.SSFR.HNE. ML:2.3 0.00173 0.14 AML other m 2021-02-25T01:22:25.48
IV.SSFR.HHN. ML:2 0.000728 0.3 AML other m 2021-02-25T01:22:25.60
IV.SSFR.HNN. ML:2.2 0.001445 0.14 AML other m 2021-02-25T01:22:25.45
IV.ATFO.HHE. ML:1.4 0.000199 0.76 AML other m 2021-02-25T01:22:25.97
IV.MURB.HHN. ML:1.4 0.0002005 0.2 AML other m 2021-02-25T01:22:26.46
IV.FRON.EHE. ML:1.6 0.0001895 1.18 AML other m 2021-02-25T01:22:27.07
IV.ARVD.HHE. ML:1.4 0.0001185 1.66 AML other m 2021-02-25T01:22:28.01
IV.ARVD.HHN. ML:1.3 8.825E-5 1.5 AML other m 2021-02-25T01:22:28.02
IV.EL6.EHE. ML:1.4 0.0001215 0.52 AML other m 2021-02-25T01:22:28.51
IV.EL6.EHN. ML:1.4 0.000133 0.24 AML other m 2021-02-25T01:22:28.56
IV.FRON.EHN. ML:1.6 0.000196 0.48 AML other m 2021-02-25T01:22:28.55
IV.CESI.HHN. ML:1 4.325E-5 0.08 AML other m 2021-02-25T01:22:29.26
IV.PIEI.HHN. ML:1.5 0.0001255 0.22 AML other m 2021-02-25T01:22:29.38
IV.PIEI.HHE. ML:1.8 0.0002685 0.32 AML other m 2021-02-25T01:22:29.60
IV.ATPI.EHN. ML:1 3.975E-5 0.72 AML other m 2021-02-25T01:22:29.31
IV.CESI.HHE. ML:1 4.435E-5 1.3 AML other m 2021-02-25T01:22:29.68
IV.FDMO.HHN. ML:1 3.84E-5 0.26 AML other m 2021-02-25T01:22:30.69
IV.ATPI.EHE. ML:1.1 4.325E-5 1.62 AML other m 2021-02-25T01:22:31.09
IV.FDMO.HHE. ML:1 4.205E-5 1.14 AML other m 2021-02-25T01:22:31.69
IV.NARO.HHE. ML:1.3 6.815E-5 0.06 AML other m 2021-02-25T01:22:31.33
IV.MPAG.EHE. ML:1.1 4.66E-5 0.14 AML other m 2021-02-25T01:22:31.44
IV.NARO.HHN. ML:1.2 5.055E-5 0.24 AML other m 2021-02-25T01:22:31.59
IV.CSP1.EHE. ML:1.8 0.0001935 0.6 AML other m 2021-02-25T01:22:32.42
IV.MPAG.EHN. ML:1.1 3.83E-5 0.6 AML other m 2021-02-25T01:22:32.35
IV.CSP1.EHN. ML:1.9 0.0002455 0.22 AML other m 2021-02-25T01:22:32.42
IV.APEC.HHN. ML:1.2 5.325E-5 0.52 AML other m 2021-02-25T01:22:32.51
IV.APEC.HHE. ML:1.3 6.805E-5 0.52 AML other m 2021-02-25T01:22:33.32
IV.GUMA.HHE. ML:1.7 0.0001187 0.18 AML other m 2021-02-25T01:22:35.28
IV.NRCA.HHE. ML:1.6 8.895E-5 0.72 AML other m 2021-02-25T01:22:35.47
IV.NRCA.HHN. ML:1.6 8.02E-5 1.54 AML other m 2021-02-25T01:22:36.03
IV.GUMA.HHN. ML:1.6 8.965E-5 0.66 AML other m 2021-02-25T01:22:37.77
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