Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 06-09-2021 and time 13:55:20 (Italy) in region 4 km S Fiordimonte (MC)

A magnitude ML 1.7 earthquake occured in region: 4 km S Fiordimonte (MC), on

  • 06-09-2021 11:55:20 (UTC)
  • 06-09-2021 13:55:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0020, 13.1040 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4 202 202
Fiastra MC 6 559 761
Pieve Torina MC 6 1458 2219
Acquacanina MC 7 121 2340
Pievebovigliana MC 7 866 3206
Ussita MC 7 444 3650
Visso MC 8 1107 4757
Monte Cavallo MC 8 145 4902
Bolognola MC 10 142 5044
Muccia MC 10 915 5959
Castelsantangelo sul Nera MC 13 281 6240
Serravalle di Chienti MC 15 1070 7310
Preci PG 15 724 8034
Camerino MC 15 6974 15008
Sarnano MC 17 3264 18272
Cessapalombo MC 17 512 18784
Caldarola MC 18 1823 20607
Sellano PG 19 1079 21686
Camporotondo di Fiastrone MC 20 563 22249

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
59 Km E of Perugia (166134 inhabitants)
62 Km NE of Terni (111501 inhabitants)
62 Km NW of Teramo (54892 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2021-09-06
11:55:20		 43.0022 13.1035 11 2022-03-30
13:04:16		 Bollettino Sismico Italiano INGV 97492031
Reviewed
Rev100 		ML 1.7 2021-09-06
11:55:20		 42.9948 13.0948 11 2021-09-06
12:04:30		 Sala Sismica INGV-Roma 95109051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-06 11:55:20 ± 0.04
Latitude 43.0022 ± 0.0027
Longitude 13.1035 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97492031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 328
Semi-minor axis of confidence ellipse (meter) 257
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 26
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52790
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 95109051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-06 12:04:30

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 97492031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-16 11:20:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2021-09-06T11:55:34.56 0.3 undecidable manual S 299 42.7239 50 0.43 65
IV.ASSB.HHZ. 2021-09-06T11:55:32.27 0.6 undecidable manual S 277 36.3414 50 -0.17 46
IV.EL6.EHZ. 2021-09-06T11:55:32.64 0.6 undecidable manual S 360 36.3414 50 0.22 46
IV.MTRA.EHZ. 2021-09-06T11:55:32.29 0.3 undecidable manual S 139 36.1416 50 -0.1 71
IV.MF5.EHZ. 2021-09-06T11:55:31.28 0.3 undecidable manual S 93 28.9488 50 0.82 58
IV.TERO.HHZ. 2021-09-06T11:55:30.66 0.6 undecidable manual P 136 58.5969 50 -0.04 46
IV.SSFR.HHZ. 2021-09-06T11:55:30.08 0.3 undecidable manual P 332 54.7008 50 -0.03 69
IV.ATCC.EHZ. 2021-09-06T11:55:28.25 1.0 negative manual P 299 42.7239 50 -0.01 71
IV.MMO1.EHZ. 2021-09-06T11:55:28.11 0.1 undecidable manual S 122 21.4674 50 -0.34 46
IV.GUMA.HHZ. 2021-09-06T11:55:28.34 0.6 undecidable manual S 70 19.9689 50 0.28 47
IV.NRCA.HHZ. 2021-09-06T11:55:27.40 0.1 undecidable manual S 177 18.7701 50 -0.33 92
IV.MTRA.EHZ. 2021-09-06T11:55:27.03 0.1 negative manual P 139 36.1416 50 -0.22 92
IV.ASSB.HHZ. 2021-09-06T11:55:27.09 0.1 undecidable manual P 277 36.3414 50 -0.19 92
IV.EL6.EHZ. 2021-09-06T11:55:27.24 0.3 undecidable manual P 360 36.3414 50 -0.04 71
IV.CESI.HHZ. 2021-09-06T11:55:27.01 0.1 undecidable manual S 271 16.1727 124 0.01 99
IV.MF5.EHZ. 2021-09-06T11:55:26.41 0.1 positive manual P 93 28.9488 50 0.27 92
IV.PF6.EHN. 2021-09-06T11:55:26.75 0.3 undecidable manual S 26 16.7721 123 -0.43 68
IV.MC2.EHZ. 2021-09-06T11:55:26.06 0.1 undecidable manual S 145 12.1767 132 0.14 97
IV.MML1.EHZ. 2021-09-06T11:55:26.87 0.3 undecidable manual S 319 16.3725 124 -0.18 72
IT.MTCL.HGZ. 2021-09-06T11:55:25.04 0.6 undecidable manual S 264 8.4804 142 0 50
IV.CSP1.EHE. 2021-09-06T11:55:25.94 0.1 undecidable manual S 40 12.876 130 -0.16 97
IV.MML1.EHZ. 2021-09-06T11:55:24.17 0.3 negative manual P 319 16.3725 124 0 75
IV.CESI.HHZ. 2021-09-06T11:55:24.23 0.1 positive manual P 271 16.1727 124 0.09 98
IV.MMO1.EHZ. 2021-09-06T11:55:24.79 0.1 positive manual P 122 21.4674 50 -0.19 95
IV.NRCA.HHZ. 2021-09-06T11:55:24.40 0.1 positive manual P 177 18.7701 50 -0.17 96
IV.FDMO.HHZ. 2021-09-06T11:55:24.27 0.6 undecidable manual S 341 3.996 160 0 51
IV.GUMA.HHZ. 2021-09-06T11:55:24.85 0.1 positive manual P 70 19.9689 50 0.1 97
IV.FEMA.HNZ. 2021-09-06T11:55:24.83 0.6 undecidable manual S 224 6.1938 150 0.23 48
IV.FEMA.HNZ. 2021-09-06T11:55:23.01 0.1 undecidable manual P 224 6.1938 150 0.26 96
IV.PF6.EHN. 2021-09-06T11:55:23.96 0.3 undecidable manual P 26 16.7721 123 -0.28 70
IT.MTCL.HGZ. 2021-09-06T11:55:23.13 0.1 positive manual P 264 8.4804 142 0.12 98
IV.CSP1.EHE. 2021-09-06T11:55:23.58 0.1 negative manual P 40 12.876 130 -0.05 99
IV.MC2.EHZ. 2021-09-06T11:55:23.63 0.1 positive manual P 145 12.1767 132 0.11 98
IV.FDMO.HHZ. 2021-09-06T11:55:22.64 0.1 negative manual P 341 3.996 160 0.07 100
IV.LNSS.HHZ. 2021-09-06T11:55:14.02 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.4 0.00038250000000000003 0.08 AML other m 2021-09-06T11:55:24.70
IV.FEMA.HNN. ML:1.9 0.001099 1.5 AML other m 2021-09-06T11:55:24.17
IV.FEMA.HNE. ML:1.8 0.0009119999999999999 1.86 AML other m 2021-09-06T11:55:25.03
IV.FDMO.HHE. ML:1.2 0.0002805 0.84 AML other m 2021-09-06T11:55:25.12
IV.CESI.HHE. ML:1.6 0.0003155 0.76 AML other m 2021-09-06T11:55:27.12
IV.MML1.HNN. ML:2.1 0.001135 0.18 AML other m 2021-09-06T11:55:27.14
IV.MML1.EHN. ML:2.1 0.0011175 0.16 AML other m 2021-09-06T11:55:27.15
IV.MML1.HNE. ML:1.7 0.000389 0.16 AML other m 2021-09-06T11:55:27.16
IV.MML1.EHE. ML:1.7 0.0004205 1.28 AML other m 2021-09-06T11:55:27.89
IV.CESI.HHN. ML:1.7 0.0004445 1 AML other m 2021-09-06T11:55:27.26
IV.GUMA.HHE. ML:2.0 0.0008165 0.34 AML other m 2021-09-06T11:55:28.45
IV.GUMA.HHN. ML:1.7 0.000375 1.72 AML other m 2021-09-06T11:55:29.07
IV.MTRA.EHN. ML:1.7 0.0001865 0.54 AML other m 2021-09-06T11:55:32.68
IV.ASSB.HHN. ML:1.6 0.000146 0.18 AML other m 2021-09-06T11:55:32.58
IV.MTRA.EHE. ML:1.7 0.000174 0.28 AML other m 2021-09-06T11:55:32.78
IV.ASSB.HHE. ML:1.5 0.00011199999999999998 1.1 AML other m 2021-09-06T11:55:33.09
IV.TERO.HHE. ML:1.6 0.00008529999999999999 0.76 AML other m 2021-09-06T11:55:34.39
IV.ATCC.EHE. ML:1.7 0.00014600000000000003 1.72 AML other m 2021-09-06T11:55:34.04
IV.ATCC.EHN. ML:1.5 0.00009905 0.68 AML other m 2021-09-06T11:55:35.88
IV.TERO.HHN. ML:1.4 0.000053 0.6 AML other m 2021-09-06T11:55:38.66
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