Earthquake with magnitude of ML 0.9 on date 23-10-2020 and time 16:18:21 (UTC) in region 3 km E Serravalle di Chienti (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km E Serravalle di Chienti (MC), on

  • 23-10-2020 16:18:21 (UTC)
  • 23-10-2020 18:18:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.06, 12.99 at 14 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
Serravalle di Chienti MC 3 1070 1070
Muccia MC 5 915 1985
Pieve Torina MC 6 1458 3443
Monte Cavallo MC 8 145 3588
Pievebovigliana MC 8 866 4454
Fiordimonte MC 9 202 4656
Sefro MC 10 422 5078
Camerino MC 10 6974 12052
Pioraco MC 13 1134 13186
Fiastra MC 14 559 13745
Fiuminata MC 15 1402 15147
Acquacanina MC 16 121 15268
Nocera Umbra PG 17 5839 21107
Visso MC 17 1107 22214
Castelraimondo MC 17 4587 26801
Ussita MC 18 444 27245
Valtopina PG 19 1398 28643
Sellano PG 20 1079 29722

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
62 Km NE of Terni (111501 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
86 Km NW of L'Aquila (69753 inhabitants)
87 Km S of Fano (60888 inhabitants)
94 Km S of Pesaro (94582 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 0.9 2020-10-23
16:18:21
43.06 12.99 14 2020-10-23
16:26:56
Sala Sismica INGV-Roma 84060731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-23 16:18:21 ± 0.07
Latitude 43.06 ± 0.00
Longitude 12.99 ± 0.00
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84060731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 306
Semi-minor axis of confidence ellipse (meter) 108
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 181
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.27789
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 84060731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-23 16:26:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RSP.HHZ. 2020-10-23T16:19:46.03 3.0 undecidable manual Pg 20.01 0
IV.CORL.HHZ. 2020-10-23T16:19:20.36 3.0 negative manual Pg 20.43 0
IV.SEI.HHZ. 2020-10-23T16:19:20.66 3.0 undecidable manual Sn -3.61 0
IV.ATVO.HHZ. 2020-10-23T16:19:12.58 3.0 undecidable manual Sg 10.81 0
IV.PIPA.HHZ. 2020-10-23T16:18:56.93 3.0 negative manual Pg 13.4 0
IV.RIBO.EHZ.01 2020-10-23T16:18:53.49 3.0 positive manual Pg 12.24 0
IV.TDS.HHZ. 2020-10-23T16:18:39.32 3.0 undecidable manual Pn 0.02 0
IV.PAOL.HHZ. 2020-10-23T16:18:39.14 3.0 undecidable manual Sn -1.13 0
IV.SGTA.HHZ. 2020-10-23T16:18:39.90 3.0 undecidable manual Sn -0.75 0
IV.TREM.HHZ. 2020-10-23T16:18:36.24 3.0 undecidable manual Sg 1.24 0
CR.STON.BHZ. 2020-10-23T16:18:36.60 3.0 undecidable manual Pn 1.2 0
IV.PE3.EHZ. 2020-10-23T16:18:35.88 3.0 positive manual Pn 1.29 0
IV.EL6.EHZ. 2020-10-23T16:18:32.80 0.3 undecidable manual S 17 0.2779 99 0.06 72
IV.NRCA.HHZ. 2020-10-23T16:18:31.81 0.3 undecidable manual S 158 0.2482 101 -0.06 73
IV.ASSB.HHZ. 2020-10-23T16:18:31.65 0.3 undecidable manual S 265 0.241 102 -0.02 73
IV.NOCI.HHZ. 2020-10-23T16:18:31.33 3.0 negative manual Pn -1.73 0
IV.SNTG.HHZ. 2020-10-23T16:18:30.13 0.3 undecidable manual S 350 0.1943 107 -0.19 71
IV.RMP.HHZ. 2020-10-23T16:18:30.47 3.0 undecidable manual Pg 5.17 0
IV.CSP1.EHZ. 2020-10-23T16:18:29.53 0.3 undecidable manual S 80 0.161 113 0.14 72
IV.EL6.EHZ. 2020-10-23T16:18:28.12 0.1 undecidable manual P 17 0.2779 99 -0.07 95
IV.FDMO.HHZ. 2020-10-23T16:18:27.22 0.3 undecidable manual S 111 0.0773 141 -0.19 73
IV.CESI.HHZ. 2020-10-23T16:18:27.59 0.3 undecidable manual S 226 0.0845 138 0.05 75
IV.NRCA.HHZ. 2020-10-23T16:18:27.55 0.1 undecidable manual P 158 0.2482 101 -0.14 95
IV.ASSB.HHZ. 2020-10-23T16:18:27.57 0.1 undecidable manual P 265 0.241 102 0 97
IV.CSP1.EHZ. 2020-10-23T16:18:26.38 0.1 undecidable manual P 80 0.161 113 0.12 97
IV.SNTG.HHZ. 2020-10-23T16:18:26.82 0.1 undecidable manual P 350 0.1943 107 0.03 98
IV.FDMO.HHZ. 2020-10-23T16:18:25.15 0.1 undecidable manual P 111 0.0773 141 0.04 100
IV.CESI.HHZ. 2020-10-23T16:18:25.35 0.1 undecidable manual P 226 0.0845 138 0.16 98
IV.MNTT.EHZ. 2020-10-23T16:18:18.68 3.0 positive manual P -4.56 0
IV.VVLD.HHZ. 2020-10-23T16:18:17.79 3.0 undecidable manual P -1.2 0
IV.LPEL.HHZ. 2020-10-23T16:18:15.30 3.0 positive manual P -1.16 0
IV.ROSPO.HHZ. 2020-10-23T16:18:15.78 3.0 undecidable manual S 0
IV.ROSPO.HHZ. 2020-10-23T16:18:12.15 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:0.8 6.975E-5 0.14 AML other m 2020-10-23T16:18:27.44
IV.FDMO.HHE. ML:0.6 4.63E-5 0.12 AML other m 2020-10-23T16:18:27.53
IV.CESI.HHN. ML:0.9 9.225E-5 0.36 AML other m 2020-10-23T16:18:27.84
IV.CESI.HHE. ML:1 0.0001065 0.4 AML other m 2020-10-23T16:18:27.94
IV.ASSB.HHN. ML:0.8 3.56E-5 0.48 AML other m 2020-10-23T16:18:31.99
IV.ASSB.HHE. ML:1 4.31E-5 0.08 AML other m 2020-10-23T16:18:32.14
IV.EL6.EHN. ML:1.1 5.34E-5 0.6 AML other m 2020-10-23T16:18:33.16
IV.EL6.EHE. ML:1.1 5.73E-5 0.78 AML other m 2020-10-23T16:18:33.56
IV.NOCI.HHN. ML:3 4.41E-5 0.36 AML other m 2020-10-23T16:18:34.57
IV.NOCI.HHE. ML:3 4.96E-5 0.14 AML other m 2020-10-23T16:18:34.75
IV.SGTA.HHN. ML:3.2 0.0002175 0.16 AML other m 2020-10-23T16:18:48.52
IV.SGTA.HHE. ML:3.4 0.000336 0.2 AML other m 2020-10-23T16:18:48.67
IV.RMP.HHE. ML:3 0.0005155 0.48 AML other m 2020-10-23T16:19:06.29
IV.RMP.HHN. ML:3.2 0.0009205 0.06 AML other m 2020-10-23T16:19:06.65
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download