Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 26-01-2021 and time 13:51:01 (UTC) in region 3 km SW Serra San Quirico (AN)

A magnitude ML 1.0 earthquake occured in region: 3 km SW Serra San Quirico (AN), on

  • 26-01-2021 13:51:01 (UTC)
  • 26-01-2021 14:51:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.42, 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.

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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 6 1797 4647
Mergo AN 6 1037 5684
Poggio San Vicino MC 8 246 5930
Rosora AN 9 1985 7915
Cupramontana AN 10 4756 12671
Arcevia AN 10 4612 17283
Castelplanio AN 11 3540 20823
Apiro MC 11 2280 23103
Cerreto d'Esi AN 11 3817 26920
Maiolati Spontini AN 11 6248 33168
Sassoferrato AN 12 7285 40453
Poggio San Marcello AN 12 693 41146
Fabriano AN 12 31480 72626
Montecarotto AN 13 1987 74613
Monte Roberto AN 13 3061 77674
Castelbellino AN 14 4947 82621
Serra de' Conti AN 14 3746 86367
San Paolo di Jesi AN 14 933 87300
Staffolo AN 15 2253 89553
Barbara AN 18 1368 90921
Cingoli MC 18 10352 101273
Matelica MC 18 9981 111254
Esanatoglia MC 19 2034 113288

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of Ancona (100861 inhabitants)
47 Km S of Fano (60888 inhabitants)
55 Km S of Pesaro (94582 inhabitants)
57 Km NE of Foligno (57155 inhabitants)
61 Km NE of Perugia (166134 inhabitants)
80 Km SE of Rimini (147750 inhabitants)
91 Km E of Arezzo (99543 inhabitants)
100 Km NE of Terni (111501 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 1.0 2021-01-26
13:51:01		 43.42 13 3 2021-01-26
14:13:31		 Sala Sismica INGV-Roma 86601731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-26 13:51:01 ± 0.13
Latitude 43.42 ± 0.01
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 86601731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 684
Semi-minor axis of confidence ellipse (meter) 629
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 36
Circular confidence region, given by single value of horizontal uncertainty (meter) 680
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38851
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.5
Num. used stations 14
Type of magnitude ML
Reference to an origin 86601731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-26 14:13:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CET2.HHZ. 2021-01-26T13:52:58.65 3.0 undecidable manual Sn -2.15 0
IV.CMPR.HHZ. 2021-01-26T13:52:46.26 3.0 undecidable manual Sg 8.28 0
IV.EMCN.HNZ. 2021-01-26T13:52:31.05 3.0 undecidable manual Pn 5.23 0
NI.VINO.HHZ. 2021-01-26T13:52:24.63 3.0 undecidable manual Sg 1.07 0
IV.CRJA.HHZ. 2021-01-26T13:52:19.57 3.0 undecidable manual Pn -2.88 0
IV.SENA.HHZ. 2021-01-26T13:52:16.05 3.0 undecidable manual Pg 16.459999 0
IV.CPOZ.HHZ. 2021-01-26T13:52:13.75 3.0 undecidable manual Sn -3.74 0
CR.STON.BHZ. 2021-01-26T13:52:09.96 3.0 positive manual Pg 14.68 0
IV.SARZ.HHZ. 2021-01-26T13:52:01.45 3.0 positive manual Pg 10.36 0
IV.LRP.EHZ. 2021-01-26T13:51:59.53 3.0 undecidable manual Sg 4.25 0
IV.ZCCA.HHZ. 2021-01-26T13:51:53.81 3.0 undecidable manual Sn -0.19 0
IT.RMVT.HGZ. 2021-01-26T13:51:47.36 3.0 undecidable manual S 0.7 0
IV.FIR.HHZ. 2021-01-26T13:51:42.97 3.0 undecidable manual S -0.06 0
IV.PTRJ.HHZ. 2021-01-26T13:51:36.77 3.0 undecidable manual Pn -1.55 0
IV.LATB.EHZ. 2021-01-26T13:51:34.69 3.0 positive manual Pn 2.85 0
IV.LPEL.HHZ. 2021-01-26T13:51:26.95 3.0 undecidable manual P -1.59 0
TV.SF04.EHZ. 2021-01-26T13:51:19.63 3.0 positive manual P -0.76 0
IV.PIEI.HHZ. 2021-01-26T13:51:15.01 0.3 undecidable manual S 289 0.3588 95 -0.05 71
IV.MF5.EHZ. 2021-01-26T13:51:13.72 3.0 positive manual P 2.39 0
IV.MPAG.EHZ. 2021-01-26T13:51:11.80 0.3 undecidable manual S 320 0.2734 96 0.01 73
IV.MMO1.EHZ. 2021-01-26T13:51:11.84 3.0 undecidable manual P 0
IV.ATSC.EHN. 2021-01-26T13:51:10.26 0.6 undecidable manual S 271 0.2302 97 0.13 48
IV.FRON.EHE. 2021-01-26T13:51:10.37 0.3 undecidable manual S 296 0.2239 97 0.49 66
IV.FDMO.HHZ. 2021-01-26T13:51:09.26 0.1 undecidable manual P 171 0.3885 94 -0.6 82
IV.CSP1.EHZ. 2021-01-26T13:51:09.04 0.1 undecidable manual P 156 0.3597 95 -0.18 92
IV.PIEI.HHZ. 2021-01-26T13:51:08.91 0.1 undecidable manual P 289 0.3588 95 -0.29 90
IV.SSFR.HHN. 2021-01-26T13:51:07.99 0.3 undecidable manual S 276 0.1619 100 0.48 67
IV.CING.HNE. 2021-01-26T13:51:07.77 0.3 undecidable manual S 108 0.1466 101 0.84 59
IV.MPAG.EHZ. 2021-01-26T13:51:07.53 0.1 undecidable manual P 320 0.2734 96 0.22 93
IV.FRON.EHE. 2021-01-26T13:51:06.30 0.1 undecidable manual P 296 0.2239 97 0.09 96
IV.ATSC.EHN. 2021-01-26T13:51:06.39 0.3 undecidable manual P 271 0.2302 97 0.04 73
IV.EL6.EHZ. 2021-01-26T13:51:05.77 0.3 undecidable manual S 142 0.1151 104 -0.01 75
IV.SSFR.HHN. 2021-01-26T13:51:04.88 0.1 undecidable manual P 276 0.1619 100 0.04 99
IV.ARVD.HHZ. 2021-01-26T13:51:04.43 0.3 undecidable manual S 330 0.0899 108 -0.39 70
IV.CING.HNE. 2021-01-26T13:51:04.56 0.3 undecidable manual P 108 0.1466 101 0.05 74
IV.EL6.EHZ. 2021-01-26T13:51:03.97 0.1 undecidable manual P 142 0.1151 104 0.13 98
IV.ARVD.HHZ. 2021-01-26T13:51:03.04 0.1 undecidable manual P 330 0.0899 108 -0.25 96
IV.MMUR.HNZ. 2021-01-26T13:51:02.67 0.1 undecidable manual S 348 0.0216 142 0.1 100
IV.MMUR.HNZ. 2021-01-26T13:51:01.65 0.1 negative manual P 348 0.0216 142 -0.34 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMUR.HNE. ML:0 0.0083836385 0.3904 AML other m 2021-01-26T13:51:03.09
IV.MMUR.HNN. ML:0 0.007798643 0.32 AML other m 2021-01-26T13:51:03.03
IV.ARVD.HHE. ML:0.8 0.00011283285 0.9792 AML other m 2021-01-26T13:51:04.95
IV.ARVD.HHN. ML:0.8 0.00010898028 0.64 AML other m 2021-01-26T13:51:04.53
IV.EL6.EHE. ML:0.3 2.94406705E-5 1.4016 AML other m 2021-01-26T13:51:05.51
IV.EL6.EHN. ML:0.7 7.424624E-5 2.5344 AML other m 2021-01-26T13:51:05.16
IV.MPAG.EHE. ML:0.7 2.666803E-5 1.1968 AML other m 2021-01-26T13:51:12.10
IV.MPAG.EHN. ML:0.9 3.779888E-5 2.2208 AML other m 2021-01-26T13:51:12.89
IV.MPAG.HNE. ML:1.9 0.00040842815 0.8448 AML other m 2021-01-26T13:51:12.34
IV.MPAG.HNN. ML:2 0.00047647065 0.8192 AML other m 2021-01-26T13:51:12.33
IV.PIEI.HHE. ML:0.8 2.3483495E-5 1.76 AML other m 2021-01-26T13:51:15.58
IV.PIEI.HHN. ML:0.6 1.50889905E-5 0.0832 AML other m 2021-01-26T13:51:16.40
IV.CSP1.EHE. ML:1.7 0.00017129282 6.2592 AML other m 2021-01-26T13:51:18.55
IV.CSP1.EHN. ML:1.4 9.478432E-5 4.2432 AML other m 2021-01-26T13:51:19.47
IV.LPEL.HHE. ML:2.1 4.8037805E-5 0.16 AML other m 2021-01-26T13:51:31.62
IV.LPEL.HHN. ML:2.1 4.5342455E-5 0.2816 AML other m 2021-01-26T13:51:32.95
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