Earthquake with magnitude of ML 1.2 on date 21-10-2021 and time 08:08:10 (UTC) in region 5 km SW Serra San Quirico (AN)

A magnitude ML 1.2 earthquake occured in region: 5 km SW Serra San Quirico (AN), on

  • 21-10-2021 08:08:10 (UTC)
  • 21-10-2021 10:08:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.404, 12.996 at 10 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 5 2850 2850
Genga AN 6 1797 4647
Poggio San Vicino MC 8 246 4893
Mergo AN 8 1037 5930
Cerreto d'Esi AN 9 3817 9747
Fabriano AN 10 31480 41227
Rosora AN 11 1985 43212
Cupramontana AN 11 4756 47968
Apiro MC 11 2280 50248
Sassoferrato AN 12 7285 57533
Arcevia AN 12 4612 62145
Castelplanio AN 12 3540 65685
Maiolati Spontini AN 13 6248 71933
Poggio San Marcello AN 14 693 72626
Monte Roberto AN 15 3061 75687
Montecarotto AN 15 1987 77674
Castelbellino AN 15 4947 82621
San Paolo di Jesi AN 16 933 83554
Staffolo AN 16 2253 85807
Serra de' Conti AN 16 3746 89553
Matelica MC 16 9981 99534
Esanatoglia MC 17 2034 101568
Cingoli MC 18 10352 111920
Gagliole MC 19 620 112540
Barbara AN 20 1368 113908

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km W of Ancona (100861 inhabitants)
49 Km S of Fano (60888 inhabitants)
55 Km NE of Foligno (57155 inhabitants)
57 Km S of Pesaro (94582 inhabitants)
59 Km NE of Perugia (166134 inhabitants)
81 Km SE of Rimini (147750 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
98 Km N of Terni (111501 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 1.2 2021-10-21
08:08:10
43.4038 12.9957 10 2021-10-21
08:14:20
Sala Sismica INGV-Roma 96830831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-21 08:08:10 ± 0.07
Latitude 43.4038 ± 0.0036
Longitude 12.9957 ± 0.0062
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96830831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 504
Semi-minor axis of confidence ellipse (meter) 199
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) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.10162
Epicentral distance of station farthest from the epicenter (degree) 0.57647
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 29
Type of magnitude ML
Reference to an origin 96830831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-21 08:14:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MPAG.EHZ. 2021-10-21T08:08:21.56 0.3 undecidable manual S 323 0.2824 50 0.45 68
IV.NRCA.HHZ. 2021-10-21T08:08:21.44 0.3 undecidable manual P 171 0.5765 50 -0.02 70
IV.MC2.EHZ. 2021-10-21T08:08:20.43 0.6 undecidable manual P 164 0.5117 50 0.08 47
IV.FRON.EHZ. 2021-10-21T08:08:19.92 0.3 undecidable manual S 300 0.2266 112 0.5 67
IV.ASSB.HHZ. 2021-10-21T08:08:19.21 0.3 undecidable manual P 214 0.4362 50 0.15 70
IV.FOSV.EHZ. 2021-10-21T08:08:18.37 0.3 undecidable manual S 237 0.2023 114 -0.19 73
IV.APEC.HHZ. 2021-10-21T08:08:18.32 0.3 undecidable manual P 290 0.4452 50 -0.89 55
IV.FDMO.HHZ. 2021-10-21T08:08:17.85 0.3 undecidable manual P 170 0.3732 50 -0.13 71
IV.NARO.HHZ. 2021-10-21T08:08:17.97 0.3 undecidable manual P 305 0.3651 50 0.13 71
IV.SNTG.HHZ. 2021-10-21T08:08:17.23 0.3 undecidable manual S 195 0.1538 120 0.33 71
IV.PIEI.HHZ. 2021-10-21T08:08:17.74 0.3 undecidable manual P 292 0.3588 50 0 73
IV.MPAG.EHZ. 2021-10-21T08:08:16.48 0.3 undecidable manual P 323 0.2824 50 0.05 74
IV.MML1.EHZ. 2021-10-21T08:08:16.43 0.3 undecidable manual P 183 0.2905 50 -0.14 72
IV.CING.HHZ. 2021-10-21T08:08:16.85 0.3 undecidable manual S 101 0.1475 121 0.16 74
IV.ARVD.HHZ. 2021-10-21T08:08:15.04 0.1 undecidable manual S 337 0.1016 131 -0.22 98
IV.EL6.EHZ. 2021-10-21T08:08:15.47 0.3 undecidable manual S 134 0.107 130 0.05 76
IV.FRON.EHZ. 2021-10-21T08:08:15.41 0.3 undecidable manual P 300 0.2266 112 -0.04 74
IV.SNTG.HHZ. 2021-10-21T08:08:14.00 0.3 undecidable manual P 195 0.1538 120 0 76
IV.FOSV.EHZ. 2021-10-21T08:08:14.88 0.3 undecidable manual P 237 0.2023 114 -0.07 74
IV.CING.HHZ. 2021-10-21T08:08:13.91 0.3 undecidable manual P 101 0.1475 121 0.03 76
IV.EL6.EHZ. 2021-10-21T08:08:13.04 0.3 undecidable manual P 134 0.107 130 -0.1 75
IV.ARVD.HHZ. 2021-10-21T08:08:12.93 0.1 undecidable manual P 337 0.1016 131 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:1.2 0.0001773175 0.1024 AML other m 2021-10-21T08:08:16.03
IV.ARVD.HHN. ML:1.1 0.00013818885 0.1408 AML other m 2021-10-21T08:08:15.46
IV.CING.HHE. ML:1 8.8503525E-5 0.1984 AML other m 2021-10-21T08:08:17.53
IV.EL6.EHE. ML:1.6 0.0004205 0.42 AML other m 2021-10-21T08:08:17.52
IV.EL6.EHN. ML:1.7 0.000585 0.38 AML other m 2021-10-21T08:08:17.56
IV.SNTG.HHN. ML:1.4 0.00023209585 0.1216 AML other m 2021-10-21T08:08:17.59
IV.SNTG.HHE. ML:1.2 0.000136 0.2 AML other m 2021-10-21T08:08:17.74
IV.CING.HHN. ML:1.2 0.0001289867 0.1792 AML other m 2021-10-21T08:08:18.12
IV.FOSV.EHN. ML:1.2 0.0001015 1.78 AML other m 2021-10-21T08:08:18.08
IV.FOSV.EHE. ML:1.1 8.325E-5 1.82 AML other m 2021-10-21T08:08:19.06
IV.FRON.EHN. ML:1.3 0.0001105 0.3 AML other m 2021-10-21T08:08:20.37
IV.FRON.EHE. ML:1.1 6.8424E-5 0.2624 AML other m 2021-10-21T08:08:20.80
IV.MPAG.EHE. ML:0.9 4.1849145E-5 0.096 AML other m 2021-10-21T08:08:22.72
IV.MPAG.EHN. ML:0.9 3.87E-5 0.1 AML other m 2021-10-21T08:08:22.42
IV.MML1.EHE. ML:1.3 9.13E-5 0.34 AML other m 2021-10-21T08:08:22.55
IV.MML1.EHN. ML:1.1 5.601702E-5 0.1792 AML other m 2021-10-21T08:08:24.15
IV.FDMO.HHE. ML:1.5 0.000117 0.14 AML other m 2021-10-21T08:08:25.48
IV.FDMO.HHN. ML:1.4 8.63E-5 0.14 AML other m 2021-10-21T08:08:25.92
IV.NARO.HHE. ML:1 3.081875E-5 0.1216 AML other m 2021-10-21T08:08:25.65
IV.NARO.HHN. ML:1 3.2172879E-5 0.1408 AML other m 2021-10-21T08:08:27.60
IV.ASSB.HHN. ML:1.2 4.58E-5 1.82 AML other m 2021-10-21T08:08:28.02
IV.ASSB.HHE. ML:1.2 4.0396315E-5 0.32 AML other m 2021-10-21T08:08:29.07
IV.NRCA.HHE. ML:1.5 5.525E-5 0.62 AML other m 2021-10-21T08:08:32.35
IV.NRCA.HHN. ML:1.6 7.426097E-5 0.1408 AML other m 2021-10-21T08:08:32.86
IV.SNTG.HNE. ML:1.2 0.000146700735 0.192 AML other m 2021-10-21T08:08:17.83
IV.SNTG.HNN. ML:1.4 0.0002254116 0.1472 AML other m 2021-10-21T08:08:17.58
IV.MML1.HNE. ML:1.4 0.00010719352 0.3072 AML other m 2021-10-21T08:08:22.38
IV.PIEI.HHE. ML:1.2 4.888002E-5 0.2816 AML other m 2021-10-21T08:08:24.76
IV.PIEI.HHN. ML:1 3.3197025E-5 0.1792 AML other m 2021-10-21T08:08:26.31
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