Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 19-11-2020 and time 22:59:31 (Italy) in region 3 km SW Fiastra (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Fiastra (MC), on

  • 19-11-2020 21:59:31 (UTC)
  • 19-11-2020 22:59:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0200, 13.1260 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.

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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
Fiastra MC 3 559 559
Fiordimonte MC 4 202 761
Acquacanina MC 4 121 882
Pievebovigliana MC 6 866 1748
Pieve Torina MC 7 1458 3206
Ussita MC 8 444 3650
Bolognola MC 9 142 3792
Muccia MC 10 915 4707
Visso MC 10 1107 5814
Monte Cavallo MC 10 145 5959
Camerino MC 14 6974 12933
Castelsantangelo sul Nera MC 14 281 13214
Sarnano MC 15 3264 16478
Cessapalombo MC 15 512 16990
Serravalle di Chienti MC 15 1070 18060
Caldarola MC 16 1823 19883
Camporotondo di Fiastrone MC 17 563 20446
Preci PG 17 724 21170
Gualdo MC 18 815 21985
Serrapetrona MC 18 966 22951
San Ginesio MC 19 3498 26449
Belforte del Chienti MC 19 1886 28335
Amandola FM 19 3629 31964
Montefortino FM 20 1178 33142

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
61 Km E of Perugia (166134 inhabitants)
62 Km NW of Teramo (54892 inhabitants)
64 Km NE of Terni (111501 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
78 Km N of L'Aquila (69753 inhabitants)
92 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 0.9 2020-11-19
21:59:31		 43.0197 13.1257 8 2020-11-19
22:09:12		 Sala Sismica INGV-Roma 84855751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-19 21:59:31 ± 0.13
Latitude 43.0197 ± 0.0054
Longitude 13.1257 ± 0.0074
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84855751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 545
Semi-minor axis of confidence ellipse (meter) 275
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.34174
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 84855751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-19 22:09:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-11-19T21:59:45.11 0.6 undecidable manual S 274 37.9287 50 -0.22 61
IV.EL6.EHZ. 2020-11-19T21:59:44.28 0.3 undecidable manual S 357 34.4433 103 0.06 95
IV.MF5.EHZ. 2020-11-19T21:59:42.63 0.6 undecidable manual S 97 27.3504 106 0.8 52
IV.NRCA.HHZ. 2020-11-19T21:59:40.12 0.6 undecidable manual S 183 20.6682 110 0.48 60
IV.MMO1.EHZ. 2020-11-19T21:59:39.02 0.6 undecidable manual S 129 21.0678 110 -0.75 54
IV.CESI.HHZ. 2020-11-19T21:59:39.32 0.6 undecidable manual S 265 17.9709 113 0.54 59
IV.ASSB.HHZ. 2020-11-19T21:59:39.37 1.0 undecidable manual P 274 37.9287 50 -0.32 30
IV.EL6.EHZ. 2020-11-19T21:59:38.99 0.6 negative manual P 357 34.4433 103 -0.05 64
IV.MF5.EHZ. 2020-11-19T21:59:37.89 1.0 undecidable manual P 97 27.3504 106 0.22 31
IV.NRCA.HHZ. 2020-11-19T21:59:36.29 0.3 negative manual P 183 20.6682 110 -0.11 97
IV.CSP1.EHZ. 2020-11-19T21:59:36.46 0.3 undecidable manual S 39 10.2786 127 0.03 100
IV.MMO1.EHZ. 2020-11-19T21:59:36.01 1.0 positive manual P 129 21.0678 110 -0.47 30
IV.CESI.HHZ. 2020-11-19T21:59:36.13 0.6 negative manual P 265 17.9709 113 0.23 63
IV.FDMO.HHZ. 2020-11-19T21:59:34.56 0.3 undecidable manual S 301 3.5964 155 -0.37 94
IV.CSP1.EHZ. 2020-11-19T21:59:34.61 0.6 positive manual P 39 10.2786 127 0.06 66
IV.MC2.EHZ. 2020-11-19T21:59:34.81 1.0 negative manual P 157 13.0758 120 -0.21 32
IV.FDMO.HHZ. 2020-11-19T21:59:33.54 1.0 undecidable manual P 301 3.5964 155 -0.15 33
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:1.2 0.00019849999999999997 0.62 AML other m 2020-11-19T21:59:36.22
IV.CSP1.EHE. ML:1.0 0.000162 0.42 AML other m 2020-11-19T21:59:37.21
IV.CESI.HHE. ML:0.7 0.000045350000000000005 0.48 AML other m 2020-11-19T21:59:40.42
IV.CESI.HHN. ML:0.7 0.000047350000000000006 0.96 AML other m 2020-11-19T21:59:41.94
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