Earthquake with magnitude of ML 0.5 on date 12-10-2021 and time 11:27:21 (UTC) in region 3 km S Gualdo Tadino (PG)

A magnitude ML 0.5 earthquake occured in region: 3 km S Gualdo Tadino (PG), on

  • 12-10-2021 11:27:21 (UTC)
  • 12-10-2021 13:27:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.208, 12.792 at 5 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
Gualdo Tadino PG 3 15208 15208
Fossato di Vico PG 10 2840 18048
Nocera Umbra PG 11 5839 23887
Fiuminata MC 12 1402 25289
Esanatoglia MC 14 2034 27323
Sigillo PG 14 2404 29727
Sefro MC 15 422 30149
Pioraco MC 16 1134 31283
Valfabbrica PG 16 3389 34672
Valtopina PG 17 1398 36070
Fabriano AN 17 31480 67550
Costacciaro PG 18 1216 68766
Matelica MC 19 9981 78747
Serravalle di Chienti MC 20 1070 79817

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Foligno (57155 inhabitants)
35 Km E of Perugia (166134 inhabitants)
73 Km N of Terni (111501 inhabitants)
73 Km S of Fano (60888 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
79 Km S of Pesaro (94582 inhabitants)
79 Km E of Arezzo (99543 inhabitants)
96 Km NW of Teramo (54892 inhabitants)
97 Km S of Rimini (147750 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 0.5 2021-10-12
11:27:21
43.2078 12.7918 5 2021-10-12
11:31:56
Sala Sismica INGV-Roma 96471691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-12 11:27:21 ± 0.29
Latitude 43.2078 ± 0.0054
Longitude 12.7918 ± 0.0086
Depth (km) 5 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96471691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 680
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 222
Circular confidence region, given by single value of horizontal uncertainty (meter) 680
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 12
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) 0.25631
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 96471691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-12 11:31:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2021-10-12T11:27:31.46 0.6 undecidable manual S 358 0.2284 101 0.51 45
IV.EL6.EHZ. 2021-10-12T11:27:31.74 0.6 undecidable manual S 62 0.2563 100 -0.26 48
IV.ATSC.EHZ. 2021-10-12T11:27:30.44 0.6 undecidable manual S 340 0.2293 101 -0.54 45
IV.MML1.EHZ. 2021-10-12T11:27:28.26 0.6 undecidable manual S 126 0.1619 105 -0.17 50
IV.EL6.EHZ. 2021-10-12T11:27:27.49 0.6 positive manual P 62 0.2563 100 -0.28 48
IV.SNTG.HHZ. 2021-10-12T11:27:27.00 0.6 undecidable manual S 66 0.1178 110 0.16 50
IV.SSFR.HHZ. 2021-10-12T11:27:27.35 0.1 undecidable manual P 358 0.2284 101 0.19 98
IV.ATSC.EHZ. 2021-10-12T11:27:27.11 0.1 undecidable manual P 340 0.2293 101 -0.07 100
IV.ASSB.HHZ. 2021-10-12T11:27:26.70 0.6 positive manual P 211 0.1916 103 0.34 48
IV.ATFO.HHZ. 2021-10-12T11:27:26.58 3.0 undecidable manual S 0
IV.MML1.EHZ. 2021-10-12T11:27:25.84 1.0 positive manual P 126 0.1619 105 0.13 25
IV.SNTG.HHZ. 2021-10-12T11:27:25.01 0.6 undecidable manual P 66 0.1178 110 0.22 50
IV.ATCC.EHZ. 2021-10-12T11:27:24.42 0.6 undecidable manual P 258 0.1133 111 -0.27 49
IV.ATFO.HHZ. 2021-10-12T11:27:24.35 3.0 undecidable manual P 0
IV.MURB.HHZ. 2021-10-12T11:27:24.08 3.0 undecidable manual P -0.03 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHE. ML:0.8 8.295E-5 1.06 AML other m 2021-10-12T11:27:28.37
IV.ATCC.EHN. ML:0.6 5.4E-5 0.54 AML other m 2021-10-12T11:27:29.35
IV.SNTG.HHE. ML:0.3 2.43025785E-5 0.1792 AML other m 2021-10-12T11:27:28.07
IV.SNTG.HHN. ML:0.4 3.161064E-5 0.0832 AML other m 2021-10-12T11:27:27.93
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