Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 19-01-2021 and time 11:12:42 (Italy) in region 3 km SW Serra San Quirico (AN)

A magnitude ML 0.8 earthquake occured in region: 3 km SW Serra San Quirico (AN), on

  • 19-01-2021 10:12:42 (UTC)
  • 19-01-2021 11:12:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.43, 12.99 at 1 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.

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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 5 1797 4647
Mergo AN 6 1037 5684
Rosora AN 9 1985 7669
Arcevia AN 9 4612 12281
Poggio San Vicino MC 9 246 12527
Cupramontana AN 10 4756 17283
Castelplanio AN 10 3540 20823
Sassoferrato AN 11 7285 28108
Poggio San Marcello AN 12 693 28801
Maiolati Spontini AN 12 6248 35049
Apiro MC 12 2280 37329
Cerreto d'Esi AN 12 3817 41146
Fabriano AN 12 31480 72626
Montecarotto AN 12 1987 74613
Monte Roberto AN 13 3061 77674
Serra de' Conti AN 13 3746 81420
Castelbellino AN 14 4947 86367
San Paolo di Jesi AN 15 933 87300
Staffolo AN 16 2253 89553
Barbara AN 17 1368 90921
Matelica MC 19 9981 100902
Cingoli MC 19 10352 111254
Serra Sant'Abbondio PU 19 1027 112281
Pergola PU 20 6333 118614
San Lorenzo in Campo PU 20 3414 122028
Castelleone di Suasa AN 20 1676 123704
Esanatoglia MC 20 2034 125738

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 0.8 2021-01-19
10:12:42		 43.43 12.99 1 2021-01-19
11:04:01		 Sala Sismica INGV-Roma 86375881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-19 10:12:42 ± 0.09
Latitude 43.43 ± 0.01
Longitude 12.99 ± 0.01
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86375881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 350
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34804
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 86375881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-19 11:04:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-01-19T10:12:56.15 0.3 undecidable manual S 288 0.348 92 -0.26 67
IV.MPAG.EHZ. 2021-01-19T10:12:53.23 0.6 undecidable manual S 320 0.2617 92 0.16 47
IV.ATSC.EHE. 2021-01-19T10:12:51.76 0.3 undecidable manual S 269 0.2221 93 0.2 70
IV.FRON.EHZ. 2021-01-19T10:12:51.47 0.3 undecidable manual S 295 0.2131 93 0.28 69
IV.PIEI.HHZ. 2021-01-19T10:12:50.01 0.6 undecidable manual P 288 0.348 92 -0.73 39
IV.CING.HHZ. 2021-01-19T10:12:49.42 0.3 undecidable manual S 110 0.1565 94 0.38 68
IV.SSFR.HNE. 2021-01-19T10:12:49.24 0.3 undecidable manual S 273 0.1529 94 0.35 69
IV.MPAG.EHZ. 2021-01-19T10:12:48.48 0.3 undecidable manual P 320 0.2617 92 -0.33 68
IV.COR1.EHZ. 2021-01-19T10:12:48.00 0.3 undecidable manual P 2 0.2023 93 0.5 66
IV.FRON.EHZ. 2021-01-19T10:12:47.68 0.3 undecidable manual P 295 0.2131 93 -0.05 72
IV.ATSC.EHE. 2021-01-19T10:12:47.71 0.3 undecidable manual P 269 0.2221 93 -0.23 70
IV.NARO.HHZ. 2021-01-19T10:12:47.73 3.0 undecidable manual P -3.01 0
IV.SSFR.HNE. 2021-01-19T10:12:46.59 0.6 undecidable manual P 273 0.1529 94 0.19 47
IV.ARVD.HHZ. 2021-01-19T10:12:46.12 0.3 undecidable manual S 332 0.0782 98 0.1 73
IV.CING.HHZ. 2021-01-19T10:12:46.40 0.1 undecidable manual P 110 0.1565 94 -0.09 97
IV.EL6.EHZ. 2021-01-19T10:12:45.67 0.3 undecidable manual P 142 0.1277 95 -0.16 72
IV.ARVD.HHZ. 2021-01-19T10:12:44.58 0.1 undecidable manual P 332 0.0782 98 -0.16 97
IV.MMUR.HNZ. 2021-01-19T10:12:43.57 0.1 undecidable manual S 15 0.0126 130 -0.06 100
IV.MMUR.HNZ. 2021-01-19T10:12:43.23 0.1 undecidable manual P 15 0.0126 130 -0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EL6.EHE. ML:1 0.00011755 1.7 AML other m 2021-01-19T10:12:50.86
IV.EL6.EHN. ML:1.1 0.0001584 1.22 AML other m 2021-01-19T10:12:51.01
IV.FRON.EHE. ML:0.7 3.655E-5 0.42 AML other m 2021-01-19T10:12:52.61
IV.FRON.EHN. ML:0.8 4.41E-5 1.12 AML other m 2021-01-19T10:12:53.28
IV.PIEI.HHN. ML:0.6 1.36E-5 1.58 AML other m 2021-01-19T10:12:58.18
IV.PIEI.HHE. ML:0.6 1.53E-5 0.84 AML other m 2021-01-19T10:12:59.11
IV.MPAG.EHN. ML:0.9 3.96E-5 1.14 AML other m 2021-01-19T10:13:02.57
IV.MPAG.EHE. ML:0.8 3.09E-5 0.86 AML other m 2021-01-19T10:13:04.04
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