Earthquake with magnitude of ML 0.6 on date 21-11-2021 and time 21:25:01 (UTC) in region 6 km W Sassoferrato (AN)

A magnitude ML 0.6 earthquake occured in region: 6 km W Sassoferrato (AN), on

  • 21-11-2021 21:25:01 (UTC)
  • 21-11-2021 22:25:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.425, 12.793 at 14 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
Sassoferrato AN 6 7285 7285
Serra Sant'Abbondio PU 8 1027 8312
Costacciaro PG 10 1216 9528
Scheggia e Pascelupo PG 10 1393 10921
Frontone PU 11 1300 12221
Sigillo PG 11 2404 14625
Genga AN 12 1797 16422
Fabriano AN 13 31480 47902
Cantiano PU 14 2245 50147
Arcevia AN 15 4612 54759
Fossato di Vico PG 15 2840 57599
Pergola PU 16 6333 63932
Cagli PU 18 8731 72663
Serra San Quirico AN 18 2850 75513
Gubbio PG 19 32216 107729
Cerreto d'Esi AN 19 3817 111546

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Perugia (166134 inhabitants)
50 Km SW of Fano (60888 inhabitants)
53 Km N of Foligno (57155 inhabitants)
55 Km S of Pesaro (94582 inhabitants)
62 Km W of Ancona (100861 inhabitants)
73 Km S of Rimini (147750 inhabitants)
74 Km E of Arezzo (99543 inhabitants)
91 Km SE of Cesena (96758 inhabitants)
97 Km N of Terni (111501 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 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 http://www.hsit.it. 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
Reviewed
Rev100
ML 0.6 2021-11-21
21:25:01
43.4248 12.7927 14 2021-11-21
21:31:17
Sala Sismica INGV-Roma 97668781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-21 21:25:01 ± 0.05
Latitude 43.4248 ± 0.0027
Longitude 12.7927 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97668781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 44
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.01349
Epicentral distance of station farthest from the epicenter (degree) 0.2644
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 97668781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-21 21:31:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-11-21T21:25:11.26 1.0 undecidable manual S 113 0.2437 100 0.11 24
IV.NARO.HHZ. 2021-11-21T21:25:11.16 0.3 undecidable manual S 320 0.241 100 0.09 72
IV.ATCC.EHZ. 2021-11-21T21:25:11.97 0.3 undecidable manual S 205 0.2644 99 0.23 68
IV.MPAG.EHZ. 2021-11-21T21:25:10.27 0.3 undecidable manual S 353 0.2059 103 0.24 71
IV.PIEI.HHE. 2021-11-21T21:25:10.24 0.3 undecidable manual S 301 0.2176 102 -0.13 72
IV.SNTG.HHZ. 2021-11-21T21:25:09.78 0.6 undecidable manual S 148 0.2005 104 -0.12 48
IV.ATCC.EHZ. 2021-11-21T21:25:07.41 1.0 undecidable manual P 205 0.2644 99 0.04 24
IV.ARVD.HHZ. 2021-11-21T21:25:07.87 0.3 undecidable manual S 56 0.1304 119 -0.08 72
IV.EL6.EHZ. 2021-11-21T21:25:07.27 0.1 undecidable manual P 113 0.2437 100 0.24 94
IV.FRON.EHZ. 2021-11-21T21:25:07.28 0.3 undecidable manual S 332 0.1052 128 -0.03 74
IV.FOSV.EHZ. 2021-11-21T21:25:07.75 0.6 undecidable manual S 190 0.1322 119 -0.24 48
IV.PIEI.HHE. 2021-11-21T21:25:06.47 0.1 undecidable manual P 301 0.2176 102 -0.11 96
IV.SNTG.HHZ. 2021-11-21T21:25:06.16 0.1 undecidable manual P 148 0.2005 104 -0.15 95
IV.ATSC.EHE. 2021-11-21T21:25:06.68 0.6 undecidable manual S 269 0.0773 139 -0.04 50
IV.NARO.HHZ. 2021-11-21T21:25:06.90 0.1 undecidable manual P 320 0.241 100 -0.09 95
IV.MPAG.EHZ. 2021-11-21T21:25:06.43 0.1 undecidable manual P 353 0.2059 103 0.04 98
IV.FOSV.EHZ. 2021-11-21T21:25:05.15 0.6 positive manual P 190 0.1322 119 -0.06 49
IV.SSFR.HHE. 2021-11-21T21:25:05.87 0.6 undecidable manual S 327 0.0135 172 -0.06 50
IV.ARVD.HHZ. 2021-11-21T21:25:05.22 1.0 undecidable manual P 56 0.1304 119 0.04 25
IV.SSFR.HHE. 2021-11-21T21:25:04.09 0.1 undecidable manual P 327 0.0135 172 0.07 100
IV.FRON.EHZ. 2021-11-21T21:25:04.88 0.1 undecidable manual P 332 0.1052 128 0.07 99
IV.ATSC.EHE. 2021-11-21T21:25:04.52 0.1 undecidable manual P 269 0.0773 139 0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:1 9.11E-5 0.1 AML other m 2021-11-21T21:25:07.40
IV.FRON.EHN. ML:0.9 6.785E-5 0.32 AML other m 2021-11-21T21:25:07.49
IV.FOSV.EHE. ML:0.8 5.135E-5 1.44 AML other m 2021-11-21T21:25:07.85
IV.FOSV.EHN. ML:0.9 6.99E-5 1.7 AML other m 2021-11-21T21:25:07.87
IV.SNTG.HHN. ML:0.5 2.11E-5 0.2 AML other m 2021-11-21T21:25:09.92
IV.SNTG.HHE. ML:0.5 2.115E-5 0.4 AML other m 2021-11-21T21:25:10.28
IV.ARVD.HHE. ML:0.5 2.353572E-5 0.1152 AML other m 2021-11-21T21:25:08.01
IV.ARVD.HHN. ML:0.4 1.9427075E-5 0.1408 AML other m 2021-11-21T21:25:08.11
IV.MPAG.EHE. ML:0.2 8.4522555E-6 0.1408 AML other m 2021-11-21T21:25:10.77
IV.MPAG.EHN. ML:-0.1 7.443619E-6 0.3072 AML other m 2021-11-21T21:25:10.50
IV.ATCC.EHE. ML:0.5 1.272445355E-5 0.2048 AML other m 2021-11-21T21:25:12.53
IV.ATCC.EHN. ML:0.6 1.7772705E-5 0.1152 AML other m 2021-11-21T21:25:12.60
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