Earthquake with magnitude of ML 1.0 on date 25-10-2020 and time 11:49:58 (Italy) in region 3 km S Fiastra (MC)

A magnitude ML 1.0 earthquake occured in region: 3 km S Fiastra (MC), on

  • 25-10-2020 10:49:58 (UTC)
  • 25-10-2020 11:49:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.01, 13.15 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
Fiastra MC 3 559 559
Acquacanina MC 3 121 680
Fiordimonte MC 6 202 882
Bolognola MC 7 142 1024
Ussita MC 8 444 1468
Pievebovigliana MC 8 866 2334
Pieve Torina MC 9 1458 3792
Visso MC 10 1107 4899
Muccia MC 12 915 5814
Monte Cavallo MC 12 145 5959
Sarnano MC 13 3264 9223
Castelsantangelo sul Nera MC 13 281 9504
Cessapalombo MC 14 512 10016
Camerino MC 15 6974 16990
Caldarola MC 15 1823 18813
Camporotondo di Fiastrone MC 16 563 19376
Gualdo MC 17 815 20191
Amandola FM 17 3629 23820
San Ginesio MC 17 3498 27318
Preci PG 17 724 28042
Serravalle di Chienti MC 17 1070 29112
Montefortino FM 17 1178 30290
Belforte del Chienti MC 18 1886 32176
Serrapetrona MC 19 966 33142
Montemonaco AP 19 604 33746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
60 Km NW of Teramo (54892 inhabitants)
63 Km E of Perugia (166134 inhabitants)
65 Km NE of Terni (111501 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
76 Km N of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
99 Km NW of Montesilvano (53738 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.0 2020-10-25
10:49:58
43.01 13.15 8 2020-10-25
11:12:08
Sala Sismica INGV-Roma 84115981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 10:49:58 ± 0.14
Latitude 43.01 ± 0.00
Longitude 13.15 ± 0.01
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 84115981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.05216
Epicentral distance of station farthest from the epicenter (degree) 0.22753
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

Field Value
Value 1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 84115981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 11:12:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-10-25T10:50:05.62 0.3 undecidable manual S 188 0.1817 112 -0.24 71
IV.MF5.EHZ. 2020-10-25T10:50:03.64 0.1 undecidable manual P 96 0.2275 108 0.03 97
IV.MC2.EHZ. 2020-10-25T10:50:03.53 0.6 undecidable manual S 165 0.1052 125 0.26 47
IV.NRCA.HHZ. 2020-10-25T10:50:02.51 0.1 undecidable manual P 188 0.1817 112 -0.15 96
IV.CSP1.EHZ. 2020-10-25T10:50:02.56 0.6 undecidable manual S 27 0.0881 130 -0.17 49
IV.CESI.HHZ. 2020-10-25T10:50:02.74 0.1 undecidable manual P 267 0.1799 112 0.11 97
IV.FDMO.HHZ. 2020-10-25T10:50:01.79 0.3 undecidable manual S 296 0.0522 145 0 76
IV.MC2.EHZ. 2020-10-25T10:50:01.32 0.1 undecidable manual P 165 0.1052 125 0.15 97
IV.FDMO.HHZ. 2020-10-25T10:50:00.38 1.0 undecidable manual P 296 0.0522 145 0.07 25
IV.CSP1.EHZ. 2020-10-25T10:50:00.83 0.1 undecidable manual P 27 0.0881 130 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.0002640916 0.16 AML other m 2020-10-25T10:50:01.95
IV.FDMO.HHN. ML:1.1 0.0002454288 0.1024 AML other m 2020-10-25T10:50:02.14
IV.CSP1.EHE. ML:1.1 0.00017585875 0.096 AML other m 2020-10-25T10:50:02.87
IV.CSP1.EHN. ML:1.1 0.0001936336 0.1152 AML other m 2020-10-25T10:50:02.92
IV.NRCA.HHE. ML:0.7 3.427936E-5 0.16 AML other m 2020-10-25T10:50:08.06
IV.NRCA.HHN. ML:0.7 3.680714E-5 0.0832 AML other m 2020-10-25T10:50:07.05
IV.NRCA.HNE. ML:1.1 9.33664E-5 0.5312 AML other m 2020-10-25T10:50:10.80
IV.NRCA.HNN. ML:1.3 0.00015232927 0.7808 AML other m 2020-10-25T10:50:11.53
IV.CESI.HHE. ML:0.3 1.25898275E-5 0.9792 AML other m 2020-10-25T10:50:01.87
IV.CESI.HHN. ML:0.1 1.208467E-5 0.1792 AML other m 2020-10-25T10:50:08.55
IV.CESI.HNE. ML:1.1 9.4943255E-5 0.768 AML other m 2020-10-25T10:50:05.57
IV.CESI.HNN. ML:2.1 0.0008988951 0.5696 AML other m 2020-10-25T10:50:12.47
IV.MF5.EHE. ML:1 5.4841726E-5 1.44 AML other m 2020-10-25T10:50:05.20
IV.MF5.EHN. ML:1 5.877221E-5 1.8816 AML other m 2020-10-25T10:50:16.81
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download