Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.3 on date 05-02-2021 and time 20:26:25 (Italy) in region 7 km NE Sigillo (PG)

A magnitude ML 0.3 earthquake occured in region: 7 km NE Sigillo (PG), on

  • 05-02-2021 19:26:25 (UTC)
  • 05-02-2021 20:26:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.37, 12.81 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.

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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
Sigillo PG 7 2404 2404
Costacciaro PG 8 1216 3620
Fabriano AN 9 31480 35100
Sassoferrato AN 9 7285 42385
Fossato di Vico PG 9 2840 45225
Scheggia e Pascelupo PG 12 1393 46618
Genga AN 12 1797 48415
Serra Sant'Abbondio PU 14 1027 49442
Cerreto d'Esi AN 15 3817 53259
Gualdo Tadino PG 16 15208 68467
Esanatoglia MC 17 2034 70501
Frontone PU 17 1300 71801
Arcevia AN 18 4612 76413
Gubbio PG 19 32216 108629
Serra San Quirico AN 19 2850 111479
Cantiano PU 19 2245 113724

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NE of Perugia (166134 inhabitants)
47 Km N of Foligno (57155 inhabitants)
55 Km SW of Fano (60888 inhabitants)
61 Km S of Pesaro (94582 inhabitants)
64 Km W of Ancona (100861 inhabitants)
76 Km E of Arezzo (99543 inhabitants)
79 Km S of Rimini (147750 inhabitants)
91 Km N of Terni (111501 inhabitants)
97 Km SE of Cesena (96758 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 0.3 2021-02-05
19:26:25		 43.3698 12.8105 12 2021-02-05
19:37:08		 Sala Sismica INGV-Roma 86862521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-05 19:26:25 ± 0.04
Latitude 43.3698 ± 0.0018
Longitude 12.8105 ± 0.0037
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86862521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 221
Semi-minor axis of confidence ellipse (meter) 187
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 220
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.06925
Epicentral distance of station farthest from the epicenter (degree) 0.29318
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 86862521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-05 19:37:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-02-05T19:26:37.14 0.1 undecidable manual S 325 0.2932 93 0.09 95
IV.MPAG.EHZ. 2021-02-05T19:26:36.33 0.1 undecidable manual S 352 0.2617 93 0.19 93
IV.PIEI.HHZ. 2021-02-05T19:26:36.00 0.3 undecidable manual S 310 0.2599 93 -0.07 71
IV.ATCC.HNE. 2021-02-05T19:26:35.19 0.3 undecidable manual S 214 0.2221 94 0.22 70
IV.EL6.EHZ. 2021-02-05T19:26:34.79 1.0 undecidable manual S 101 0.2158 95 0.03 24
IV.FRON.EHZ. 2021-02-05T19:26:33.06 0.1 undecidable manual S 337 0.1601 100 -0.08 97
IV.ARVD.HHZ. 2021-02-05T19:26:33.14 0.1 undecidable manual S 37 0.1592 100 0.02 98
IV.NARO.HHZ. 2021-02-05T19:26:32.01 1.0 undecidable manual P 325 0.2932 93 -0.34 22
IV.FOSV.EHZ. 2021-02-05T19:26:31.02 0.1 undecidable manual S 206 0.0827 130 -0.04 100
IV.ATSC.EHN. 2021-02-05T19:26:31.57 0.1 undecidable manual S 301 0.1052 119 -0.03 100
IV.PIEI.HHZ. 2021-02-05T19:26:31.66 1.0 positive manual P 310 0.2599 93 -0.12 24
IV.MPAG.EHZ. 2021-02-05T19:26:31.82 1.0 positive manual P 352 0.2617 93 0 24
IV.ATCC.HNE. 2021-02-05T19:26:31.11 0.6 undecidable manual P 214 0.2221 94 -0.03 48
IV.ARVD.HHZ. 2021-02-05T19:26:30.05 0.3 negative manual P 37 0.1592 100 -0.03 73
IV.EL6.EHZ. 2021-02-05T19:26:30.85 0.6 undecidable manual P 101 0.2158 95 -0.17 47
IV.SSFR.HNN. 2021-02-05T19:26:30.66 0.1 undecidable manual S 343 0.0692 137 -0.11 99
IV.ATSC.EHN. 2021-02-05T19:26:29.22 0.1 undecidable manual P 301 0.1052 119 0.02 99
IV.FRON.EHZ. 2021-02-05T19:26:29.98 0.3 undecidable manual P 337 0.1601 100 -0.11 72
IV.SSFR.HNN. 2021-02-05T19:26:28.81 0.1 undecidable manual P 343 0.0692 137 0.1 98
IV.FOSV.EHZ. 2021-02-05T19:26:28.88 0.1 undecidable manual P 206 0.0827 130 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:0.6 2.785E-5 0.18 AML other m 2021-02-05T19:26:33.08
IV.FRON.EHN. ML:0.7 3.845E-5 0.14 AML other m 2021-02-05T19:26:33.16
IV.ARVD.HHE. ML:0.3 1.408787E-5 0.0896 AML other m 2021-02-05T19:26:33.15
IV.ARVD.HHN. ML:0.1 1.15207745E-5 0.0768 AML other m 2021-02-05T19:26:33.21
IV.PIEI.HHE. ML:0.3 1.1623175E-5 0.1024 AML other m 2021-02-05T19:26:36.23
IV.PIEI.HHN. ML:0 7.2130795E-6 0.1792 AML other m 2021-02-05T19:26:36.11
IV.MPAG.EHE. ML:0 7.1419125E-6 0.1024 AML other m 2021-02-05T19:26:36.55
IV.MPAG.EHN. ML:0.3 8.648697E-6 1.4976 AML other m 2021-02-05T19:26:36.92
IV.NARO.HHE. ML:0.4 9.295878E-6 0.0768 AML other m 2021-02-05T19:26:37.24
IV.NARO.HHN. ML:0.5 1.5843265E-5 1.3184 AML other m 2021-02-05T19:26:37.25
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download