Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 23-10-2020 and time 01:07:30 (Italy) in region 3 km S Fiordimonte (MC)

A magnitude ML 1.2 earthquake occured in region: 3 km S Fiordimonte (MC), on

  • 22-10-2020 23:07:30 (UTC)
  • 23-10-2020 01:07:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0100, 13.1010 at 10 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.

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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 3 202 202
Fiastra MC 6 559 761
Pieve Torina MC 6 1458 2219
Pievebovigliana MC 6 866 3085
Acquacanina MC 7 121 3206
Ussita MC 8 444 3650
Monte Cavallo MC 8 145 3795
Visso MC 9 1107 4902
Muccia MC 9 915 5817
Bolognola MC 10 142 5959
Castelsantangelo sul Nera MC 13 281 6240
Serravalle di Chienti MC 14 1070 7310
Camerino MC 14 6974 14284
Preci PG 15 724 15008
Sarnano MC 17 3264 18272
Cessapalombo MC 17 512 18784
Caldarola MC 18 1823 20607
Camporotondo di Fiastrone MC 19 563 21170
Sellano PG 19 1079 22249
Sefro MC 20 422 22671

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)
63 Km NW of Teramo (54892 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
93 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
Reviewed
Rev100 		ML 1.2 2020-10-22
23:07:30		 43.0095 13.1008 10 2020-10-22
23:20:55		 Sala Sismica INGV-Roma 84039141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-22 23:07:30 ± 0.05
Latitude 43.0095 ± 0.0036
Longitude 13.1008 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84039141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 343
Semi-minor axis of confidence ellipse (meter) 297
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 206
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
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) 0.57647
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 22
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 84039141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-22 23:20:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2020-10-22T23:07:55.55 3.0 negative manual P 0.05 0
IV.FRON.EHZ. 2020-10-22T23:07:42.24 0.3 undecidable manual P 332 63.9915 50 -0.08 89
IV.SNTG.HHZ. 2020-10-22T23:07:41.38 0.6 undecidable manual S 335 30.1476 50 -0.28 60
IV.OFFI.HHZ. 2020-10-22T23:07:40.83 0.6 undecidable manual P 100 48.2184 50 0.95 46
IV.MNTT.EHZ. 2020-10-22T23:07:39.25 0.3 undecidable manual P 82 40.5261 50 0.55 83
IV.FOSV.EHZ. 2020-10-22T23:07:39.06 0.3 undecidable manual P 319 41.9247 50 0.15 91
IV.SMA1.EHZ. 2020-10-22T23:07:39.25 0.3 undecidable manual P 156 46.2204 50 -0.32 87
IV.NRCA.HHZ. 2020-10-22T23:07:38.10 0.6 undecidable manual S 177 19.5693 117 -0.37 60
IV.MMO1.EHZ. 2020-10-22T23:07:38.77 0.6 undecidable manual S 124 22.0668 114 -0.48 59
IV.GAVE.EHZ. 2020-10-22T23:07:38.36 0.3 undecidable manual P 206 39.0276 50 -0.1 92
IV.GUMA.HHZ. 2020-10-22T23:07:38.87 0.6 undecidable manual S 73 19.869 116 0.29 61
IV.ATCC.EHZ. 2020-10-22T23:07:38.98 0.3 undecidable manual P 298 42.1245 50 0.04 93
IV.ASSB.HHZ. 2020-10-22T23:07:37.84 0.3 undecidable manual P 276 36.0417 50 -0.16 92
IV.MML1.HNZ. 2020-10-22T23:07:37.32 0.6 undecidable manual S 318 15.5733 122 0.05 65
IV.CESI.HHZ. 2020-10-22T23:07:37.56 0.6 undecidable manual S 268 15.9729 122 0.19 63
IV.EL6.EHZ. 2020-10-22T23:07:37.74 0.3 undecidable manual P 0 35.4423 50 -0.18 92
IV.PF6.EHZ. 2020-10-22T23:07:37.14 0.6 undecidable manual S 28 16.1727 121 -0.29 62
IV.MF5.EHZ. 2020-10-22T23:07:37.09 0.3 undecidable manual P 95 29.2485 50 0.14 93
IV.SNTG.HHZ. 2020-10-22T23:07:36.81 0.3 undecidable manual P 335 30.1476 50 -0.29 90
IV.CSP1.EHZ. 2020-10-22T23:07:36.21 0.6 undecidable manual S 43 12.4764 128 -0.17 64
IV.MC2.EHZ. 2020-10-22T23:07:36.65 0.6 undecidable manual S 147 12.9759 127 0.11 64
IV.MMO1.EHZ. 2020-10-22T23:07:35.46 0.3 undecidable manual P 124 22.0668 114 -0.25 92
IV.GUMA.HHZ. 2020-10-22T23:07:35.48 0.3 undecidable manual P 73 19.869 116 0.15 95
IV.FEMA.HNZ. 2020-10-22T23:07:35.13 0.6 undecidable manual S 218 6.6933 146 0.13 65
IT.MTCL.HGZ. 2020-10-22T23:07:35.27 0.6 undecidable manual S 258 8.3805 139 -0.09 65
IV.NRCA.HHZ. 2020-10-22T23:07:35.09 0.3 undecidable manual P 177 19.5693 117 -0.17 94
IV.CSP1.EHZ. 2020-10-22T23:07:34.09 0.3 undecidable manual P 43 12.4764 128 0.04 98
IV.MC2.EHZ. 2020-10-22T23:07:34.20 0.3 undecidable manual P 147 12.9759 127 0.06 98
IV.MML1.HNZ. 2020-10-22T23:07:34.67 0.3 undecidable manual P 318 15.5733 122 0.11 96
IV.CESI.HHZ. 2020-10-22T23:07:34.83 0.3 undecidable manual P 268 15.9729 122 0.2 94
IV.FDMO.HHZ. 2020-10-22T23:07:34.20 0.6 undecidable manual S 340 3.1968 162 -0.26 63
IV.PF6.EHZ. 2020-10-22T23:07:34.54 0.3 undecidable manual P 28 16.1727 121 -0.12 96
IV.FEMA.HNZ. 2020-10-22T23:07:33.66 0.3 undecidable manual P 218 6.6933 146 0.4 92
IT.MTCL.HGZ. 2020-10-22T23:07:33.60 0.3 undecidable manual P 258 8.3805 139 0.13 97
IV.FDMO.HHZ. 2020-10-22T23:07:32.97 0.3 undecidable manual P 340 3.1968 162 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:1.3 0.00023935430000000002 0.1024 AML other m 2020-10-22T23:07:36.42
IV.CSP1.EHN. ML:1.4 0.00031417055 0.1408 AML other m 2020-10-22T23:07:36.28
IV.NRCA.HHE. ML:1.4 0.00017573375 0.1536 AML other m 2020-10-22T23:07:40.29
IV.NRCA.HHN. ML:1.2 0.00011915185 0.1024 AML other m 2020-10-22T23:07:40.30
IV.NRCA.HNE. ML:1.4 0.00019531945 0.1536 AML other m 2020-10-22T23:07:40.36
IV.NRCA.HNN. ML:1.2 0.000120743665 0.128 AML other m 2020-10-22T23:07:40.19
IV.GUMA.HHE. ML:1.4 0.00017559934999999998 0.2176 AML other m 2020-10-22T23:07:38.96
IV.GUMA.HHN. ML:1.2 0.00012798509999999998 0.3328 AML other m 2020-10-22T23:07:39.19
IV.GUMA.HNE. ML:1.2 0.00011699272999999999 0.3328 AML other m 2020-10-22T23:07:38.94
IV.GUMA.HNN. ML:1.4 0.0001992584 0.8448 AML other m 2020-10-22T23:07:40.79
IV.ASSB.HHE. ML:1.0 0.000034352905 0.1024 AML other m 2020-10-22T23:07:43.66
IV.ASSB.HHN. ML:1.0 0.000038723030000000004 0.1152 AML other m 2020-10-22T23:07:43.56
IV.GAVE.EHE. ML:1.4 0.00009319091 0.2432 AML other m 2020-10-22T23:07:44.08
IV.GAVE.EHN. ML:1.1 0.000042993105 0.1664 AML other m 2020-10-22T23:07:44.35
IV.ATCC.EHE. ML:1.3 0.00006761185999999999 0.128 AML other m 2020-10-22T23:07:45.59
IV.ATCC.EHN. ML:1.1 0.000041206405 0.2432 AML other m 2020-10-22T23:07:45.54
IV.FOSV.EHE. ML:0.9 0.000026074385 0.1536 AML other m 2020-10-22T23:07:45.19
IV.FOSV.EHN. ML:1.3 0.00005864929 0.2304 AML other m 2020-10-22T23:07:45.39
IV.MNTT.EHE. ML:1.0 0.000033784668500000006 0.1792 AML other m 2020-10-22T23:07:47.25
IV.FRON.EHN. ML:0.9 0.000014494459499999999 0.3072 AML other m 2020-10-22T23:07:51.83
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