Earthquake with magnitude of ML 1.1 on date 21-01-2021 and time 15:41:56 (Italy) in region 2 km SW Serra San Quirico (AN)

A magnitude ML 1.1 earthquake occured in region: 2 km SW Serra San Quirico (AN), on

  • 21-01-2021 14:41:56 (UTC)
  • 21-01-2021 15:41:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.43, 13 at 3 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 2 2850 2850
Genga AN 5 1797 4647
Mergo AN 6 1037 5684
Rosora AN 8 1985 7669
Poggio San Vicino MC 9 246 7915
Arcevia AN 9 4612 12527
Cupramontana AN 9 4756 17283
Castelplanio AN 10 3540 20823
Maiolati Spontini AN 11 6248 27071
Poggio San Marcello AN 11 693 27764
Apiro MC 11 2280 30044
Sassoferrato AN 12 7285 37329
Montecarotto AN 12 1987 39316
Cerreto d'Esi AN 12 3817 43133
Monte Roberto AN 13 3061 46194
Serra de' Conti AN 13 3746 49940
Fabriano AN 13 31480 81420
Castelbellino AN 13 4947 86367
San Paolo di Jesi AN 14 933 87300
Staffolo AN 15 2253 89553
Barbara AN 17 1368 90921
Cingoli MC 19 10352 101273
Matelica MC 19 9981 111254
Castelleone di Suasa AN 20 1676 112930
Serra Sant'Abbondio PU 20 1027 113957
San Lorenzo in Campo PU 20 3414 117371
Ostra Vetere AN 20 3311 120682
Pergola PU 20 6333 127015

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km S of Fano (60888 inhabitants)
47 Km W of Ancona (100861 inhabitants)
54 Km S of Pesaro (94582 inhabitants)
58 Km NE of Foligno (57155 inhabitants)
61 Km NE of Perugia (166134 inhabitants)
78 Km SE of Rimini (147750 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
99 Km SE of Cesena (96758 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 1.1 2021-01-21
14:41:56
43.43 13 3 2021-01-21
15:00:53
Sala Sismica INGV-Roma 86434721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-21 14:41:56 ± 0.08
Latitude 43.43 ± 0.00
Longitude 13.00 ± 0.01
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86434721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 392
Semi-minor axis of confidence ellipse (meter) 234
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
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 29
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35973
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 86434721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-21 15:00:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAFE.HHZ. 2021-01-21T14:43:33.97 3.0 undecidable manual Sg 13.56 0
IT.LRNO.HNZ. 2021-01-21T14:43:13.38 3.0 undecidable manual Sg 12.07 0
IV.PTRJ.HNZ. 2021-01-21T14:43:09.46 3.0 undecidable manual Sn 2.54 0
IV.SPS2.HHZ. 2021-01-21T14:43:03.30 3.0 negative manual Pn 0.51 0
IV.FIR.HHZ. 2021-01-21T14:42:14.11 3.0 undecidable manual S -1.08 0
MN.TRI.HHZ. 2021-01-21T14:42:08.94 3.0 negative manual P -0.66 0
IV.MPAG.EHZ. 2021-01-21T14:42:06.23 0.6 undecidable manual S 319 0.2644 96 -0.13 49
IV.ATSC.EHZ. 2021-01-21T14:42:05.00 0.6 undecidable manual S 268 0.2293 97 0 51
IV.FRON.EHZ. 2021-01-21T14:42:04.83 0.6 undecidable manual S 293 0.2185 97 0.25 48
IV.FDMO.HHZ. 2021-01-21T14:42:04.19 3.0 negative manual P 2.31 0
IV.PIEI.HHZ. 2021-01-21T14:42:03.84 1.0 undecidable manual P 287 0.3543 95 -0.17 24
IV.NARO.HHZ. 2021-01-21T14:42:03.81 1.0 undecidable manual P 301 0.3543 95 -0.2 24
IV.CSP1.EHZ. 2021-01-21T14:42:03.66 3.0 negative manual Pg 2.08 0
IV.ATCC.EHE. 2021-01-21T14:42:03.67 1.0 undecidable manual P 227 0.3597 95 -0.46 22
IV.SSFR.HNZ. 2021-01-21T14:42:02.61 0.6 undecidable manual S 272 0.1592 100 0.27 49
IV.MPAG.EHZ. 2021-01-21T14:42:01.91 1.0 undecidable manual P 319 0.2644 96 -0.11 25
IV.FRON.EHZ. 2021-01-21T14:42:01.09 0.1 undecidable manual P 293 0.2185 97 0.09 100
IV.EL6.EHZ. 2021-01-21T14:42:01.27 1.0 undecidable manual S 144 0.125 103 0.24 25
IV.MTL1.HNE. 2021-01-21T14:42:00.07 1.0 undecidable manual P 178 0.1745 99 0.04 25
IV.COR1.EHZ. 2021-01-21T14:42:00.84 1.0 undecidable manual P 360 0.2005 98 0.23 24
IV.ATSC.EHZ. 2021-01-21T14:42:00.75 1.0 undecidable manual P 268 0.2293 97 -0.49 23
IV.CING.HHE. 2021-01-21T14:41:59.63 0.6 undecidable manual P 111 0.1511 101 0.11 50
IV.ARVD.HHZ. 2021-01-21T14:41:59.44 0.3 undecidable manual S 327 0.08 110 0.07 77
IV.SSFR.HNZ. 2021-01-21T14:41:59.63 0.6 undecidable manual P 272 0.1592 100 -0.08 51
IV.EL6.EHZ. 2021-01-21T14:41:58.98 1.0 negative manual P 144 0.125 103 0.03 26
IV.MMUR.HNZ. 2021-01-21T14:41:57.33 1.0 undecidable manual S 343 0.0117 158 0.05 26
IV.ARVD.HHZ. 2021-01-21T14:41:57.93 0.3 undecidable manual P 327 0.08 110 -0.06 77
IV.MMUR.HNZ. 2021-01-21T14:41:56.56 0.6 undecidable manual P 343 0.0117 158 -0.22 51
IV.IMOL.EHZ. 2021-01-21T14:41:53.35 3.0 negative manual P 0.72 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IMOL.HNN. ML:3.4 0.00134 0.2 AML other m 2021-01-21T14:41:56.81
IV.MMUR.HNN. ML:2.6 0.00844 0.26 AML other m 2021-01-21T14:41:56.81
IV.MMUR.HNE. ML:2.8 0.01157 1.76 AML other m 2021-01-21T14:41:56.92
IV.ARVD.HHN. ML:1.2 0.0002925 0.76 AML other m 2021-01-21T14:42:00.55
IV.ARVD.HHE. ML:1.2 0.000265 1.28 AML other m 2021-01-21T14:42:03.87
IV.EL6.EHN. ML:1.1 0.00014915 0.8 AML other m 2021-01-21T14:42:03.91
IV.EL6.EHE. ML:1.1 0.000173 1.2 AML other m 2021-01-21T14:42:04.27
IV.FRON.EHE. ML:0.9 5.035E-5 0.38 AML other m 2021-01-21T14:42:05.69
IV.IMOL.HNE. ML:3.4 0.00132 0.16 AML other m 2021-01-21T14:42:07.55
IV.FIR.HHE. ML:2.6 0.0002375 0.68 AML other m 2021-01-21T14:42:18.02
IV.FRON.EHN. ML:1.3 0.00012995 0.42 AML other m 2021-01-21T14:42:18.14
IV.FIR.HHN. ML:2.6 0.0002235 0.28 AML other m 2021-01-21T14:42:25.61
IV.PTRJ.HNN. ML:3.7 0.000896 0.74 AML other m 2021-01-21T14:43:37.22
IV.PTRJ.HHE. ML:3 0.0001565 0.6 AML other m 2021-01-21T14:43:38.69
IV.PTRJ.HHN. ML:3.6 0.000774 1.38 AML other m 2021-01-21T14:43:40.20
IV.PTRJ.HNE. ML:3.5 0.0005385 0.54 AML other m 2021-01-21T14:43:41.36
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