Earthquake with magnitude of ML 1.2 on date 22-10-2021 and time 16:21:17 (UTC) in region 3 km W Serra San Quirico (AN)

A magnitude ML 1.2 earthquake occured in region: 3 km W Serra San Quirico (AN), on

  • 22-10-2021 16:21:17 (UTC)
  • 22-10-2021 18:21:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.441, 12.984 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 3 2850 2850
Genga AN 4 1797 4647
Mergo AN 6 1037 5684
Arcevia AN 8 4612 10296
Rosora AN 8 1985 12281
Castelplanio AN 10 3540 15821
Sassoferrato AN 10 7285 23106
Poggio San Vicino MC 11 246 23352
Cupramontana AN 11 4756 28108
Poggio San Marcello AN 11 693 28801
Montecarotto AN 12 1987 30788
Maiolati Spontini AN 12 6248 37036
Serra de' Conti AN 12 3746 40782
Apiro MC 13 2280 43062
Fabriano AN 13 31480 74542
Monte Roberto AN 13 3061 77603
Cerreto d'Esi AN 13 3817 81420
Castelbellino AN 14 4947 86367
San Paolo di Jesi AN 15 933 87300
Barbara AN 16 1368 88668
Staffolo AN 16 2253 90921
Pergola PU 18 6333 97254
Serra Sant'Abbondio PU 18 1027 98281
San Lorenzo in Campo PU 18 3414 101695
Castelleone di Suasa AN 19 1676 103371
Ostra Vetere AN 19 3311 106682

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km S of Fano (60888 inhabitants)
47 Km W of Ancona (100861 inhabitants)
53 Km S of Pesaro (94582 inhabitants)
58 Km NE of Foligno (57155 inhabitants)
61 Km NE of Perugia (166134 inhabitants)
77 Km SE of Rimini (147750 inhabitants)
89 Km E of Arezzo (99543 inhabitants)
98 Km SE of Cesena (96758 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 2021-10-22
16:21:17
43.441 12.9845 8 2021-10-22
16:30:21
Sala Sismica INGV-Roma 96881491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-22 16:21:17 ± 0.16
Latitude 43.4410 ± 0.0099
Longitude 12.9845 ± 0.0124
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 96881491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1351
Semi-minor axis of confidence ellipse (meter) 441
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 41
Circular confidence region, given by single value of horizontal uncertainty (meter) 1350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38401
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.6
Num. used stations 10
Type of magnitude ML
Reference to an origin 96881491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-22 16:30:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OT.OT14.EHZ. 2021-10-22T16:22:05.58 3.0 undecidable manual Sn -5.64 0
IV.HVIT.HHZ. 2021-10-22T16:22:05.04 3.0 undecidable manual Pn -5.23 0
IV.RESU.HHZ. 2021-10-22T16:22:03.26 3.0 undecidable manual Pn 2.65 0
IV.MUCR.HHZ. 2021-10-22T16:22:01.20 3.0 undecidable manual Pn 3.24 0
IV.MNTT.EHZ. 2021-10-22T16:21:48.36 3.0 undecidable manual Sg 18.860001 0
IX.SNR3.EHZ.02 2021-10-22T16:21:47.88 3.0 undecidable manual Pg 20.42 0
IX.STN3.HNZ.01 2021-10-22T16:21:41.15 3.0 undecidable manual Pn 9.03 0
IX.COL3.HHZ.02 2021-10-22T16:21:33.09 3.0 undecidable manual Pn 4.39 0
IV.CSP1.EHZ. 2021-10-22T16:21:32.43 0.6 undecidable manual S 155 0.384 50 0.39 59
CH.MUGIO.HHZ. 2021-10-22T16:21:32.49 3.0 undecidable manual Sn -1.94 0
IV.SENA.HHZ. 2021-10-22T16:21:32.26 3.0 undecidable manual Pg 6.72 0
IV.PIEI.HHZ. 2021-10-22T16:21:31.15 0.3 undecidable manual S 286 0.339 50 0.43 88
IV.MPAG.EHZ. 2021-10-22T16:21:27.92 0.6 undecidable manual S 319 0.2491 105 0.56 57
IV.MML1.EHN. 2021-10-22T16:21:25.18 0.3 undecidable manual P 182 0.3274 102 0.32 90
IV.CSP1.EHZ. 2021-10-22T16:21:25.62 0.3 undecidable manual P 155 0.384 50 -0.24 90
IV.PIEI.HHZ. 2021-10-22T16:21:24.69 0.3 undecidable manual P 286 0.339 50 -0.41 88
IV.MPAG.EHZ. 2021-10-22T16:21:23.21 0.3 undecidable manual P 319 0.2491 105 0.05 97
IV.EL6.EHZ. 2021-10-22T16:21:23.44 0.6 undecidable manual S 143 0.1403 116 0.01 66
IV.ATSC.EHN. 2021-10-22T16:21:22.10 0.3 undecidable manual P 266 0.2167 107 -0.38 91
IV.CING.HHE. 2021-10-22T16:21:21.63 0.3 undecidable manual P 113 0.1664 112 0.2 96
IV.SNTG.HNE. 2021-10-22T16:21:21.87 0.3 undecidable manual P 190 0.1889 110 -0.01 98
IV.ARVD.HHZ. 2021-10-22T16:21:20.99 0.3 undecidable manual S 331 0.0648 136 -0.06 100
IV.MMUR.HNZ. 2021-10-22T16:21:20.54 0.3 undecidable manual S 85 0.009 172 0.47 92
IV.EL6.EHZ. 2021-10-22T16:21:20.81 0.3 undecidable manual P 143 0.1403 116 -0.09 98
IV.ARVD.HHZ. 2021-10-22T16:21:19.44 0.3 undecidable manual P 331 0.0648 136 -0.08 99
IV.MMUR.HNZ. 2021-10-22T16:21:18.09 0.3 undecidable manual P 85 0.009 172 -0.86 80
IV.FIU.EHZ. 2021-10-22T16:21:18.95 3.0 undecidable manual Sg 10.78 0
IV.CADC.HNZ. 2021-10-22T16:21:15.70 3.0 undecidable manual Sn -3.65 0
IV.QLNO.HHZ. 2021-10-22T16:21:05.00 3.0 positive manual Pn 3.86 0
IV.SRES.HHZ. 2021-10-22T16:20:59.73 3.0 positive manual Pn -1.3 0
IV.ZEN8.EHZ. 2021-10-22T16:20:54.20 3.0 undecidable manual Pg 4.16 0
IV.RIBO.EHZ.01 2021-10-22T16:20:52.49 3.0 negative manual P -1.44 0
IV.VOBA.EHZ. 2021-10-22T16:20:50.13 3.0 undecidable manual Pn -0.69 0
IV.SFI.EHZ. 2021-10-22T16:20:48.13 3.0 negative manual P 1.51 0
IV.IMOL.HNZ. 2021-10-22T16:20:45.50 3.0 positive manual Pn 0.34 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SRES.HHN. ML:2.2 9.65E-5 1.58 AML other m 2021-10-22T16:21:21.86
IV.MMUR.HNE. ML:0 0.00633 0.26 AML other m 2021-10-22T16:21:22.63
IV.MMUR.HNN. ML:0 0.003905 1.66 AML other m 2021-10-22T16:21:22.00
IV.ARVD.HHN. ML:0.8 0.00012 1.28 AML other m 2021-10-22T16:21:25.07
IV.ARVD.HHE. ML:1.1 0.000208 1.28 AML other m 2021-10-22T16:21:26.94
IV.EL6.EHN. ML:1.1 0.0001255 0.64 AML other m 2021-10-22T16:21:28.76
IV.EL6.EHE. ML:1.1 0.0001275 1.18 AML other m 2021-10-22T16:21:28.28
IV.PIEI.HHN. ML:0.6 1.7E-5 1.42 AML other m 2021-10-22T16:21:32.02
IV.PIEI.HHE. ML:0.8 2.49E-5 0.98 AML other m 2021-10-22T16:21:37.44
IV.VOBA.EHN. ML:3.3 0.000238 0.08 AML other m 2021-10-22T16:21:51.90
IV.VOBA.EHE. ML:3.2 0.000178 0.18 AML other m 2021-10-22T16:21:52.02
IV.SRES.HHE. ML:2.1 7.16E-5 0.36 AML other m 2021-10-22T16:21:58.20
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