Earthquake with magnitude of ML 1.1 on date 13-10-2021 and time 19:09:46 (Italy) in region 7 km W Serravalle di Chienti (MC)

A magnitude ML 1.1 earthquake occured in region: 7 km W Serravalle di Chienti (MC), on

  • 13-10-2021 17:09:46 (UTC)
  • 13-10-2021 19:09:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.06, 12.864 at 9 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 7 1070 1070
Nocera Umbra PG 8 5839 6909
Valtopina PG 9 1398 8307
Sefro MC 12 422 8729
Monte Cavallo MC 13 145 8874
Muccia MC 15 915 9789
Pieve Torina MC 15 1458 11247
Fiuminata MC 15 1402 12649
Pioraco MC 17 1134 13783
Spello PG 17 8645 22428
Foligno PG 17 57155 79583
Pievebovigliana MC 18 866 80449
Fiordimonte MC 19 202 80651
Camerino MC 19 6974 87625
Sellano PG 20 1079 88704

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
58 Km NE of Terni (111501 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
82 Km NW of Teramo (54892 inhabitants)
88 Km S of Fano (60888 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
91 Km SE of Arezzo (99543 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
95 Km S of Pesaro (94582 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.1 2021-10-13
17:09:46
43.0603 12.8637 9 2021-10-13
17:18:54
Sala Sismica INGV-Roma 96508951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-13 17:09:46 ± 0.08
Latitude 43.0603 ± 0.0036
Longitude 12.8637 ± 0.0037
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96508951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 311
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
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) 111
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 96508951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-13 17:18:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-10-13T17:09:58.59 0.6 undecidable manual S 33 0.3202 50 -0.02 48
IV.CSP1.EHZ. 2021-10-13T17:09:56.21 0.6 undecidable manual S 83 0.2509 108 -0.12 48
IV.FOSV.HNZ. 2021-10-13T17:09:56.13 0.6 undecidable manual S 342 0.2455 108 -0.01 49
IV.SNTG.HHZ. 2021-10-13T17:09:54.56 0.6 undecidable manual S 16 0.2023 112 0 50
IV.ATCC.EHZ. 2021-10-13T17:09:54.72 0.6 undecidable manual S 307 0.205 111 0.05 49
IV.FDMO.HHZ. 2021-10-13T17:09:53.44 0.6 undecidable manual S 98 0.1655 116 0.19 48
IV.EL6.EHZ. 2021-10-13T17:09:53.22 0.6 positive manual P 33 0.3202 50 -0.14 47
IV.ASSB.HHZ. 2021-10-13T17:09:52.69 0.6 undecidable manual S 263 0.1511 118 -0.06 50
IV.FIU1.HNZ. 2021-10-13T17:09:52.12 0.6 undecidable manual S 21 0.1376 120 -0.18 48
IV.FOSV.HNZ. 2021-10-13T17:09:52.33 0.1 undecidable manual P 342 0.2455 108 0.4 91
IV.ATCC.EHZ. 2021-10-13T17:09:51.00 0.1 undecidable manual P 307 0.205 111 -0.08 98
IV.CSP1.EHZ. 2021-10-13T17:09:51.99 0.1 positive manual P 83 0.2509 108 -0.05 97
IV.MML1.EHZ. 2021-10-13T17:09:51.12 0.6 undecidable manual S 56 0.0953 130 0.16 49
IV.SNTG.HHZ. 2021-10-13T17:09:51.11 1.0 negative manual P 16 0.2023 112 0.09 24
IV.FDMO.HHZ. 2021-10-13T17:09:50.38 0.1 positive manual P 98 0.1655 116 0.12 98
IV.MML1.EHZ. 2021-10-13T17:09:49.19 1.0 undecidable manual P 56 0.0953 130 0.25 24
IV.FIU1.HNZ. 2021-10-13T17:09:49.39 0.1 undecidable manual P 21 0.1376 120 -0.32 94
IV.ASSB.HHZ. 2021-10-13T17:09:49.96 0.1 undecidable manual P 263 0.1511 118 -0.01 100
IV.CESI.HHZ. 2021-10-13T17:09:49.90 0.6 undecidable manual S 152 0.063 142 -0.2 49
IV.CESI.HHZ. 2021-10-13T17:09:48.63 1.0 undecidable manual P 152 0.063 142 0.18 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.9 0.00012019574 0.1536 AML other m 2021-10-13T17:09:50.53
IV.CESI.HHN. ML:0.9 0.000127519435 0.0768 AML other m 2021-10-13T17:09:50.24
IV.MML1.EHE. ML:1.4 0.0003455 0.16 AML other m 2021-10-13T17:09:51.37
IV.MML1.EHN. ML:1.2 0.00018271915 0.1024 AML other m 2021-10-13T17:09:51.39
IV.ASSB.HHN. ML:1.2 0.0001565 0.12 AML other m 2021-10-13T17:09:52.93
IV.FDMO.HHE. ML:1.1 0.00010845 0.12 AML other m 2021-10-13T17:09:53.53
IV.FDMO.HHN. ML:1.1 0.000105 0.1 AML other m 2021-10-13T17:09:53.74
IV.ASSB.HHE. ML:0.9 7.615E-5 1.16 AML other m 2021-10-13T17:09:53.76
IV.CESI.HNE. ML:0.9 0.000127149545 0.1408 AML other m 2021-10-13T17:09:50.24
IV.CESI.HNN. ML:0.9 0.00013610395 0.0896 AML other m 2021-10-13T17:09:50.19
IV.MML1.HNE. ML:1.4 0.000329353 0.1664 AML other m 2021-10-13T17:09:51.37
IV.MML1.HNN. ML:1.2 0.00018641465 0.1152 AML other m 2021-10-13T17:09:51.39
IV.ATCC.EHN. ML:0.7 2.887083E-5 0.4608 AML other m 2021-10-13T17:09:53.22
IV.SNTG.HHE. ML:0.9 4.9380575E-5 0.0896 AML other m 2021-10-13T17:09:55.01
IV.SNTG.HHN. ML:0.9 4.7616305E-5 0.1536 AML other m 2021-10-13T17:09:54.68
IV.CSP1.EHN. ML:1.2 8.5055145E-5 0.1536 AML other m 2021-10-13T17:09:56.79
IV.EL6.EHE. ML:1.3 7.4293635E-5 0.256 AML other m 2021-10-13T17:09:59.06
IV.EL6.EHN. ML:1.1 4.871984E-5 0.2048 AML other m 2021-10-13T17:09:58.92
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