Earthquake with magnitude of ML 1.1 on date 20-11-2021 and time 04:02:11 (Italy) in region 2 km E Fiordimonte (MC)

A magnitude ML 1.1 earthquake occured in region: 2 km E Fiordimonte (MC), on

  • 20-11-2021 03:02:11 (UTC)
  • 20-11-2021 04:02:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.038, 13.119 at 8 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
Fiordimonte MC 2 202 202
Fiastra MC 3 559 761
Pievebovigliana MC 4 866 1627
Acquacanina MC 5 121 1748
Pieve Torina MC 6 1458 3206
Muccia MC 8 915 4121
Bolognola MC 10 142 4263
Ussita MC 11 444 4707
Monte Cavallo MC 11 145 4852
Camerino MC 12 6974 11826
Visso MC 12 1107 12933
Cessapalombo MC 14 512 13445
Serravalle di Chienti MC 14 1070 14515
Caldarola MC 14 1823 16338
Sarnano MC 15 3264 19602
Camporotondo di Fiastrone MC 16 563 20165
Castelsantangelo sul Nera MC 16 281 20446
Serrapetrona MC 17 966 21412
Belforte del Chienti MC 17 1886 23298
San Ginesio MC 18 3498 26796
Gualdo MC 18 815 27611
Sefro MC 18 422 28033
Preci PG 19 724 28757
Pioraco MC 19 1134 29891
Castelraimondo MC 20 4587 34478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
60 Km E of Perugia (166134 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
66 Km NE of Terni (111501 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
80 Km N of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
99 Km S of Pesaro (94582 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 1.1 2021-11-20
03:02:11
43.038 13.1193 8 2021-11-20
03:14:43
Sala Sismica INGV-Roma 97614351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-20 03:02:11 ± 0.27
Latitude 43.0380 ± 0.0072
Longitude 13.1193 ± 0.0074
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97614351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 837
Semi-minor axis of confidence ellipse (meter) 305
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 840
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.20505
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 97614351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-20 03:14:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-11-20T03:02:19.04 0.1 undecidable manual S 132 0.205 109 -0.55 87
IV.MML1.EHZ. 2021-11-20T03:02:17.05 0.1 undecidable manual S 305 0.1313 119 0.07 98
IV.CESI.HHZ. 2021-11-20T03:02:17.93 0.1 undecidable manual S 258 0.1601 114 -0.05 98
IV.MC2.EHZ. 2021-11-20T03:02:17.47 0.1 undecidable manual S 158 0.1367 118 0.33 93
IV.CSP1.EHZ. 2021-11-20T03:02:15.53 0.1 undecidable manual S 49 0.0827 131 0.11 98
IV.MC2.EHZ. 2021-11-20T03:02:15.43 0.1 undecidable manual P 158 0.1367 118 0.8 79
IV.MMO1.EHZ. 2021-11-20T03:02:15.70 0.1 undecidable manual P 132 0.205 109 -0.34 91
IV.CESI.HHZ. 2021-11-20T03:02:14.96 0.1 undecidable manual P 258 0.1601 114 -0.15 96
IV.MML1.EHZ. 2021-11-20T03:02:14.51 0.1 undecidable manual P 305 0.1313 119 -0.03 99
IV.CSP1.EHZ. 2021-11-20T03:02:13.74 0.1 undecidable manual P 49 0.0827 131 0.11 98
IV.FDMO.HHZ. 2021-11-20T03:02:13.97 0.1 undecidable manual S 266 0.0234 162 -0.16 98
IV.FDMO.HHZ. 2021-11-20T03:02:12.82 0.1 undecidable manual P 266 0.0234 162 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:1.1 0.000191 1.28 AML other m 2021-11-20T03:02:15.05
IV.CSP1.EHE. ML:1.2 0.000227 0.1 AML other m 2021-11-20T03:02:15.64
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