Earthquake with magnitude of ML 1.0 on date 25-02-2021 and time 07:57:26 (UTC) in region 3 km N Sigillo (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km N Sigillo (PG), on

  • 25-02-2021 07:57:26 (UTC)
  • 25-02-2021 08:57:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.36, 12.75 at 12 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
Sigillo PG 3 2404 2404
Costacciaro PG 3 1216 3620
Fossato di Vico PG 7 2840 6460
Scheggia e Pascelupo PG 8 1393 7853
Sassoferrato AN 12 7285 15138
Fabriano AN 13 31480 46618
Gubbio PG 14 32216 78834
Gualdo Tadino PG 14 15208 94042
Serra Sant'Abbondio PU 15 1027 95069
Cantiano PU 16 2245 97314
Genga AN 17 1797 99111
Frontone PU 18 1300 100411
Cerreto d'Esi AN 19 3817 104228
Esanatoglia MC 20 2034 106262

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NE of Perugia (166134 inhabitants)
45 Km N of Foligno (57155 inhabitants)
58 Km SW of Fano (60888 inhabitants)
63 Km S of Pesaro (94582 inhabitants)
68 Km W of Ancona (100861 inhabitants)
71 Km E of Arezzo (99543 inhabitants)
80 Km S of Rimini (147750 inhabitants)
89 Km N of Terni (111501 inhabitants)
96 Km SE of Cesena (96758 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 1.0 2021-02-25
07:57:26
43.36 12.75 12 2021-02-25
08:02:49
Sala Sismica INGV-Roma 87474531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-25 07:57:26 ± 0.05
Latitude 43.36 ± 0.00
Longitude 12.75 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87474531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 320
Semi-minor axis of confidence ellipse (meter) 121
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 180
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) 78
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2707
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 87474531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-25 08:02:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATPI.EHZ. 2021-02-25T07:57:37.08 0.3 undecidable manual S 290 0.2698 93 0.23 69
IV.MPAG.HNZ. 2021-02-25T07:57:37.05 0.3 undecidable manual S 1 0.2707 93 0.17 70
IV.ATPC.HNZ. 2021-02-25T07:57:36.30 0.3 undecidable manual S 300 0.2464 94 0.15 71
IV.EL6.EHZ. 2021-02-25T07:57:36.69 0.3 undecidable manual S 96 0.2563 93 0.24 69
IV.ATVO.HNZ. 2021-02-25T07:57:36.25 0.3 undecidable manual S 276 0.2518 94 -0.06 72
IV.PIEI.HHZ. 2021-02-25T07:57:35.64 0.3 undecidable manual S 319 0.2365 94 -0.23 70
IV.ATBU.HNZ. 2021-02-25T07:57:34.78 0.3 undecidable manual S 309 0.188 97 0.33 69
IV.ATCC.EHZ. 2021-02-25T07:57:34.59 0.3 undecidable manual S 205 0.1916 96 0.06 73
IV.MURB.HNZ. 2021-02-25T07:57:34.74 0.3 undecidable manual S 240 0.1907 96 0.23 71
IV.ARVD.HHZ. 2021-02-25T07:57:34.69 0.3 undecidable manual S 45 0.1961 96 0.01 73
IV.FRON.EHZ. 2021-02-25T07:57:33.48 0.3 undecidable manual S 353 0.1601 100 -0.14 72
IV.FDMO.HHZ. 2021-02-25T07:57:33.46 3.0 undecidable manual P -1.39 0
IV.ATFO.HHZ. 2021-02-25T07:57:32.69 0.3 undecidable manual S 274 0.1313 109 -0.09 73
IV.MPAG.HNZ. 2021-02-25T07:57:32.75 0.6 undecidable manual P 1 0.2707 93 0.3 45
IV.EL6.EHZ. 2021-02-25T07:57:32.18 0.6 undecidable manual P 96 0.2563 93 -0.02 49
IV.ATPI.EHZ. 2021-02-25T07:57:32.29 0.3 undecidable manual P 290 0.2698 93 -0.14 71
IV.MURB.HNZ. 2021-02-25T07:57:31.45 0.3 undecidable manual P 240 0.1907 96 0.37 68
IV.ATVO.HNZ. 2021-02-25T07:57:31.90 0.3 undecidable manual P 276 0.2518 94 -0.22 70
IV.ARVD.HHZ. 2021-02-25T07:57:31.03 0.3 undecidable manual P 45 0.1961 96 -0.15 72
IV.ATSC.EHZ. 2021-02-25T07:57:31.44 0.3 undecidable manual S 324 0.0809 131 -0.05 74
IV.PIEI.HHZ. 2021-02-25T07:57:31.51 0.1 undecidable manual P 319 0.2365 94 -0.36 91
IV.FOSV.EHZ. 2021-02-25T07:57:31.10 0.3 undecidable manual S 174 0.0639 140 -0.04 74
IV.ATPC.HNZ. 2021-02-25T07:57:31.85 0.3 undecidable manual P 300 0.2464 94 -0.18 71
IV.SSFR.HHZ. 2021-02-25T07:57:31.67 0.3 undecidable manual S 16 0.0809 131 0.17 73
IV.ATCC.EHZ. 2021-02-25T07:57:31.00 0.6 positive manual P 205 0.1916 96 -0.09 48
IV.FRON.EHZ. 2021-02-25T07:57:30.40 0.6 undecidable manual P 353 0.1601 100 -0.17 48
IV.ATBU.HNZ. 2021-02-25T07:57:30.97 0.3 undecidable manual P 309 0.188 97 -0.07 73
IV.SSFR.HHZ. 2021-02-25T07:57:29.32 0.1 negative manual P 16 0.0809 131 -0.02 100
IV.ATFO.HHZ. 2021-02-25T07:57:29.99 0.3 undecidable manual P 274 0.1313 109 -0.09 73
IV.ATSC.EHZ. 2021-02-25T07:57:29.32 0.3 undecidable manual P 324 0.0809 131 -0.02 75
IV.FOSV.EHZ. 2021-02-25T07:57:29.24 0.6 positive manual P 174 0.0639 140 0.1 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHN. ML:0.8 8.24E-5 0.26 AML other m 2021-02-25T07:57:31.28
IV.FOSV.EHE. ML:0.7 6.02E-5 0.18 AML other m 2021-02-25T07:57:31.13
IV.SSFR.HHE. ML:1.1 0.000144 0.18 AML other m 2021-02-25T07:57:31.78
IV.SSFR.HHN. ML:1.1 0.000164 1.3 AML other m 2021-02-25T07:57:31.86
IV.ATFO.HHN. ML:0.9 7.545E-5 0.08 AML other m 2021-02-25T07:57:33.04
IV.ATFO.HHE. ML:0.7 5.145E-5 0.74 AML other m 2021-02-25T07:57:33.92
IV.FRON.EHE. ML:1.1 0.0001069 0.3 AML other m 2021-02-25T07:57:33.69
IV.FRON.EHN. ML:1 8.025E-5 0.08 AML other m 2021-02-25T07:57:34.15
IV.ATCC.EHN. ML:1.2 0.0001116 0.12 AML other m 2021-02-25T07:57:34.74
IV.ATCC.EHE. ML:1.4 0.000154 0.1 AML other m 2021-02-25T07:57:34.86
IV.EL6.EHE. ML:1.2 7.09E-5 0.14 AML other m 2021-02-25T07:57:36.89
IV.EL6.EHN. ML:1 5.605E-5 0.58 AML other m 2021-02-25T07:57:37.67
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