Earthquake with magnitude of ML 1.3 on date 21-10-2020 and time 08:53:42 (UTC) in region 4 km S Serra San Quirico (AN)

A magnitude ML 1.3 earthquake occured in region: 4 km S Serra San Quirico (AN), on

  • 21-10-2020 08:53:42 (UTC)
  • 21-10-2020 10:53:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.41, 13.03 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
Serra San Quirico AN 4 2850 2850
Poggio San Vicino MC 6 246 3096
Mergo AN 7 1037 4133
Genga AN 8 1797 5930
Cupramontana AN 8 4756 10686
Apiro MC 9 2280 12966
Rosora AN 9 1985 14951
Castelplanio AN 10 3540 18491
Maiolati Spontini AN 10 6248 24739
Cerreto d'Esi AN 11 3817 28556
Monte Roberto AN 12 3061 31617
Poggio San Marcello AN 12 693 32310
Arcevia AN 12 4612 36922
San Paolo di Jesi AN 13 933 37855
Castelbellino AN 13 4947 42802
Staffolo AN 13 2253 45055
Fabriano AN 13 31480 76535
Montecarotto AN 13 1987 78522
Sassoferrato AN 14 7285 85807
Serra de' Conti AN 15 3746 89553
Cingoli MC 16 10352 99905
Matelica MC 17 9981 109886
Esanatoglia MC 19 2034 111920
Barbara AN 19 1368 113288
Gagliole MC 19 620 113908

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km SW of Ancona (100861 inhabitants)
48 Km S of Fano (60888 inhabitants)
56 Km S of Pesaro (94582 inhabitants)
57 Km NE of Foligno (57155 inhabitants)
62 Km NE of Perugia (166134 inhabitants)
81 Km SE of Rimini (147750 inhabitants)
93 Km E of Arezzo (99543 inhabitants)
99 Km NE of Terni (111501 inhabitants)
100 Km NW of Teramo (54892 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 1.3 2020-10-21
08:53:42
43.41 13.03 8 2020-10-21
09:00:31
Sala Sismica INGV-Roma 83983061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-21 08:53:42 ± 0.1
Latitude 43.41 ± 0.00
Longitude 13.03 ± 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 83983061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 699
Semi-minor axis of confidence ellipse (meter) 316
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 23
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
Epicentral distance of station farthest from the epicenter (degree) 0.62053
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 83983061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-21 09:00:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SEI.HHZ. 2020-10-21T08:54:28.80 3.0 undecidable manual S 2.97 0
IV.NRCA.HHZ. 2020-10-21T08:54:03.02 1.0 undecidable manual S 174 0.581 50 0.51 21
IV.CESI.HHZ. 2020-10-21T08:53:57.76 0.3 undecidable manual S 193 0.4164 50 0.12 70
IV.MURB.HHZ. 2020-10-21T08:53:57.40 0.3 undecidable manual S 248 0.3957 50 0.37 67
IV.FDMO.HHZ. 2020-10-21T08:53:56.72 0.1 undecidable manual S 174 0.3768 50 0.25 92
IV.PARC.HHZ. 2020-10-21T08:53:55.10 1.0 positive manual P 293 0.6205 50 0.56 20
IV.NRCA.HHZ. 2020-10-21T08:53:53.55 0.3 undecidable manual P 174 0.581 50 -0.31 65
IV.MPAG.EHZ. 2020-10-21T08:53:53.69 0.3 undecidable manual S 318 0.2932 103 0.07 73
IV.MC2.EHZ. 2020-10-21T08:53:52.53 0.1 undecidable manual P 167 0.5126 50 -0.17 91
IV.FRON.EHZ. 2020-10-21T08:53:51.74 0.3 undecidable manual S 296 0.2446 105 -0.08 73
IV.MURB.HHZ. 2020-10-21T08:53:50.42 1.0 positive manual P 248 0.3957 50 -0.28 23
IV.CESI.HHZ. 2020-10-21T08:53:50.58 0.1 negative manual P 193 0.4164 50 -0.47 87
IV.FOSV.EHZ. 2020-10-21T08:53:50.47 0.3 undecidable manual S 100
IV.SNTG.HHZ. 2020-10-21T08:53:49.16 0.3 undecidable manual S 203 0.1691 112 0.11 74
IV.FDMO.HHZ. 2020-10-21T08:53:49.94 1.0 negative manual P 174 0.3768 50 -0.43 22
IV.SSFR.HHZ. 2020-10-21T08:53:49.37 0.3 undecidable manual S 278 0.1817 110 -0.12 73
IV.CSP1.EHZ. 2020-10-21T08:53:49.85 0.6 negative manual P 158 0.3435 50 0.04 48
IV.MPAG.EHZ. 2020-10-21T08:53:48.59 1.0 negative manual P 318 0.2932 103 -0.14 24
IV.ARVD.HHZ. 2020-10-21T08:53:47.24 0.3 undecidable manual S 324 0.1079 122 0.3 72
IV.FRON.EHZ. 2020-10-21T08:53:47.51 0.3 positive manual P 296 0.2446 105 -0.18 72
IV.SNTG.HHZ. 2020-10-21T08:53:46.04 0.1 positive manual P 203 0.1691 112 -0.05 100
IV.SSFR.HHZ. 2020-10-21T08:53:46.18 0.1 negative manual P 278 0.1817 110 -0.17 97
IV.EL6.EHZ. 2020-10-21T08:53:44.96 0.3 positive manual P 147 0.0971 125 0.29 72
IV.ARVD.HHZ. 2020-10-21T08:53:44.96 0.1 positive manual P 324 0.1079 122 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:1.1 0.0001695 1.86 AML other m 2020-10-21T08:53:47.96
IV.ARVD.HHN. ML:1.1 0.000151 0.8 AML other m 2020-10-21T08:53:47.56
IV.EL6.EHE. ML:1.5 0.000413 0.88 AML other m 2020-10-21T08:53:49.52
IV.EL6.EHN. ML:1.6 0.000588 0.36 AML other m 2020-10-21T08:53:49.55
IV.SNTG.HHN. ML:1.5 0.000252 0.46 AML other m 2020-10-21T08:53:49.59
IV.SNTG.HHE. ML:1.3 0.000155 0.2 AML other m 2020-10-21T08:53:49.74
IV.FOSV.EHE. ML:1 6.62E-5 0.22 AML other m 2020-10-21T08:53:50.85
IV.FOSV.EHN. ML:1.1 8.02E-5 1.76 AML other m 2020-10-21T08:53:50.09
IV.SSFR.HHN. ML:1.5 0.000239 0.9 AML other m 2020-10-21T08:53:52.08
IV.FRON.EHE. ML:1.2 7.905E-5 0.34 AML other m 2020-10-21T08:53:52.79
IV.FRON.EHN. ML:1.3 0.0001038 1.62 AML other m 2020-10-21T08:53:53.87
IV.SSFR.HHE. ML:1.4 0.000214 1.58 AML other m 2020-10-21T08:53:53.16
IV.MPAG.EHN. ML:1 4.52E-5 0.58 AML other m 2020-10-21T08:53:54.66
IV.MPAG.EHE. ML:1 4.29E-5 0.66 AML other m 2020-10-21T08:53:56.46
IV.FDMO.HHE. ML:1.6 0.0001235 0.16 AML other m 2020-10-21T08:53:57.49
IV.MURB.HHE. ML:1.8 0.000214 0.74 AML other m 2020-10-21T08:53:57.61
IV.FDMO.HHN. ML:1.4 9.065E-5 1.84 AML other m 2020-10-21T08:53:58.92
IV.CESI.HHE. ML:1.1 3.73E-5 0.9 AML other m 2020-10-21T08:53:58.64
IV.MURB.HHN. ML:1.9 0.0002405 0.26 AML other m 2020-10-21T08:53:58.71
IV.CESI.HHN. ML:1.1 3.915E-5 0.22 AML other m 2020-10-21T08:54:01.92
IV.NRCA.HHN. ML:1.6 6.935E-5 0.64 AML other m 2020-10-21T08:54:04.86
IV.NRCA.HHE. ML:1.5 5.78E-5 0.6 AML other m 2020-10-21T08:54:04.66
IV.SNTG.HNE. ML:1.3 0.0001620341 0.2112 AML other m 2020-10-21T08:53:49.84
IV.SNTG.HNN. ML:1.5 0.0002498694 0.16 AML other m 2020-10-21T08:53:49.50
IV.SSFR.HNE. ML:1.5 0.00023753775 0.16 AML other m 2020-10-21T08:53:49.88
IV.SSFR.HNN. ML:1.4 0.0002130613 0.0896 AML other m 2020-10-21T08:53:49.99
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