Earthquake with magnitude of ML 0.4 on date 26-10-2021 and time 21:49:11 (UTC) in region 8 km NW Cantiano (PU)

A magnitude ML 0.4 earthquake occured in region: 8 km NW Cantiano (PU), on

  • 26-10-2021 21:49:11 (UTC)
  • 26-10-2021 23:49:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.511, 12.547 at 7 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
Cantiano PU 8 2245 2245
Cagli PU 9 8731 10976
Piobbico PU 9 2029 13005
Apecchio PU 12 1882 14887
Pietralunga PG 12 2111 16998
Scheggia e Pascelupo PG 15 1393 18391
Acqualagna PU 16 4393 22784
Frontone PU 16 1300 24084
Gubbio PG 18 32216 56300
Urbania PU 18 7099 63399
Serra Sant'Abbondio PU 18 1027 64426

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km N of Perugia (166134 inhabitants)
53 Km SW of Fano (60888 inhabitants)
53 Km SW of Pesaro (94582 inhabitants)
54 Km E of Arezzo (99543 inhabitants)
61 Km S of Rimini (147750 inhabitants)
63 Km N of Foligno (57155 inhabitants)
74 Km SE of Cesena (96758 inhabitants)
79 Km W of Ancona (100861 inhabitants)
89 Km SE of Forlì (117913 inhabitants)
Recent and historical seismicity
Seismic hazard
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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
ML 0.4 2021-10-26
43.5112 12.5473 7 2021-10-26
Sala Sismica INGV-Roma 97010501
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-10-26 21:49:11 ± 0.16
Latitude 43.5112 ± 0.0054
Longitude 12.5473 ± 0.0037
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97010501


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 596
Semi-minor axis of confidence ellipse (meter) 294
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 195
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 210
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.1295
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information


Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 97010501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 22:24:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRON.EHZ. 2021-10-26T21:49:17.15 0.1 undecidable manual S 87 0.1295 116 0.14 97
IV.NARO.HHZ. 2021-10-26T21:49:16.13 0.1 undecidable manual S 14 0.1025 122 0.04 99
IV.APEC.HHZ. 2021-10-26T21:49:16.27 0.1 undecidable manual S 297 0.1034 122 0.14 97
IV.APEC.HHZ. 2021-10-26T21:49:14.14 0.6 undecidable manual P 297 0.1034 122 -0.01 50
IV.PIEI.HHZ. 2021-10-26T21:49:14.04 0.1 undecidable manual S 340 0.0261 158 -0.07 100
IV.FRON.EHZ. 2021-10-26T21:49:14.56 0.3 undecidable manual P 87 0.1295 116 -0.09 73
IV.NARO.HHZ. 2021-10-26T21:49:13.94 0.6 undecidable manual P 14 0.1025 122 -0.19 48
IV.PIEI.HHZ. 2021-10-26T21:49:12.90 0.3 undecidable manual P 340 0.0261 158 -0.08 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NARO.HHN. ML:0.4 3.19E-5 0.14 AML other m 2021-10-26T21:49:16.22
IV.NARO.HHE. ML:0.4 3.7E-5 0.16 AML other m 2021-10-26T21:49:16.17
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download