Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 14-01-2021 and time 09:43:34 (UTC) in region 7 km NE San Severino Marche (MC)

A magnitude ML 1.7 earthquake occured in region: 7 km NE San Severino Marche (MC), on

  • 14-01-2021 09:43:34 (UTC)
  • 14-01-2021 10:43:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.29, 13.21 at 22 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
San Severino Marche MC 7 12726 12726
Treia MC 9 9403 22129
Cingoli MC 9 10352 32481
Tolentino MC 11 20069 52550
Pollenza MC 12 6618 59168
Gagliole MC 13 620 59788
Apiro MC 13 2280 62068
Serrapetrona MC 13 966 63034
Poggio San Vicino MC 14 246 63280
Appignano MC 14 4213 67493
Belforte del Chienti MC 15 1886 69379
Castelraimondo MC 15 4587 73966
Staffolo AN 16 2253 76219
Matelica MC 16 9981 86200
Caldarola MC 17 1823 88023
Urbisaglia MC 18 2628 90651
Cerreto d'Esi AN 18 3817 94468
San Paolo di Jesi AN 18 933 95401
Cupramontana AN 19 4756 100157
Camporotondo di Fiastrone MC 19 563 100720
Colmurano MC 19 1263 101983
Filottrano AN 20 9499 111482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SW of Ancona (100861 inhabitants)
55 Km NE of Foligno (57155 inhabitants)
63 Km S of Fano (60888 inhabitants)
69 Km E of Perugia (166134 inhabitants)
73 Km SE of Pesaro (94582 inhabitants)
81 Km NW of Teramo (54892 inhabitants)
93 Km NE of Terni (111501 inhabitants)
100 Km SE of Rimini (147750 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 1.7 2021-01-14
09:43:34		 43.29 13.21 22 2021-01-14
09:53:10		 Sala Sismica INGV-Roma 86241941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-14 09:43:34 ± 0.2
Latitude 43.29 ± 0.01
Longitude 13.21 ± 0.01
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86241941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 968
Semi-minor axis of confidence ellipse (meter) 553
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.46405
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 86241941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-14 09:53:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2021-01-14T09:45:19.38 3.0 undecidable manual Sg 24.24 0
IV.MILN.HNZ. 2021-01-14T09:45:14.58 3.0 undecidable manual Sg 19.290001 0
IX.SFL3.HNZ.01 2021-01-14T09:45:09.55 3.0 undecidable manual Sg 9.78 0
IV.CAGR.HHZ. 2021-01-14T09:45:03.88 3.0 undecidable manual Pn 7.9 0
IV.MTMR.HNZ. 2021-01-14T09:45:02.07 3.0 undecidable manual Sg 9.6 0
RD.PGF.BHZ. 2021-01-14T09:45:01.76 3.0 undecidable manual Sn 3.47 0
IV.LADO.EHZ. 2021-01-14T09:44:55.47 3.0 positive manual Pg 12.91 0
IV.IFOR.HHZ. 2021-01-14T09:44:49.72 3.0 undecidable manual Sn -2.47 0
IV.AMUR.HHZ. 2021-01-14T09:44:34.24 3.0 undecidable manual Pg 12.48 0
IV.MCEL.HHZ. 2021-01-14T09:44:33.05 3.0 undecidable manual Pg 8.94 0
IX.SFL3.HNZ.01 2021-01-14T09:44:27.48 3.0 undecidable manual Pg 10.11 0
IV.CASP.HHZ. 2021-01-14T09:44:27.67 3.0 undecidable manual Sg 1.88 0
IV.SBPO.HNZ. 2021-01-14T09:44:25.18 3.0 undecidable manual Sn 0.42 0
IV.MGR.HHZ. 2021-01-14T09:44:24.89 3.0 undecidable manual Pn -0.47 0
GU.CARD.HHZ. 2021-01-14T09:44:21.51 3.0 undecidable manual Sn -3.03 0
IV.LPEL.HHZ. 2021-01-14T09:44:17.71 3.0 undecidable manual Sn -3.74 0
IV.SGRT.HHZ. 2021-01-14T09:44:06.91 3.0 undecidable manual Pn -0.21 0
IV.BRSN.EHZ. 2021-01-14T09:43:55.73 3.0 undecidable manual S -2.04 0
IT.FIE.HGZ. 2021-01-14T09:43:51.65 3.0 undecidable manual P 2.1 0
IV.NRCA.HHZ. 2021-01-14T09:43:50.66 0.6 undecidable manual S 188 0.4641 106 -0.01 47
IV.CESI.HHZ. 2021-01-14T09:43:48.29 0.3 undecidable manual S 217 0.3624 111 0.48 64
IV.MF5.EHZ. 2021-01-14T09:43:48.29 0.3 undecidable manual S 149 0.357 112 0.62 62
IV.MC2.EHZ. 2021-01-14T09:43:48.31 0.3 undecidable manual S 182 0.3822 110 -0.04 71
IV.MMO1.EHZ. 2021-01-14T09:43:48.64 0.3 undecidable manual S 167 0.4038 109 -0.31 67
IV.FDMO.HHZ. 2021-01-14T09:43:45.13 0.3 undecidable manual S 199 0.2707 119 -0.22 70
IV.NRCA.HHZ. 2021-01-14T09:43:43.60 0.3 undecidable manual P 188 0.4641 106 -0.04 70
IV.CSP1.EHZ. 2021-01-14T09:43:43.17 0.3 undecidable manual S 180 0.2014 129 -0.47 67
IV.MMO1.EHZ. 2021-01-14T09:43:42.81 0.1 undecidable manual P 167 0.4038 109 0.16 92
IV.CESI.HHZ. 2021-01-14T09:43:42.06 0.1 undecidable manual P 217 0.3624 111 0.07 94
IV.MF5.EHZ. 2021-01-14T09:43:42.08 0.1 undecidable manual P 149 0.357 112 0.17 92
IV.MC2.EHZ. 2021-01-14T09:43:42.08 0.1 undecidable manual P 182 0.3822 110 -0.22 91
IV.CING.HHN. 2021-01-14T09:43:41.32 0.3 undecidable manual S 355 0.0827 155 -0.1 74
IV.EL6.EHZ. 2021-01-14T09:43:41.70 0.3 undecidable manual S 296 0.0836 154 0.27 72
IV.FDMO.HHZ. 2021-01-14T09:43:40.33 0.1 undecidable manual P 199 0.2707 119 -0.24 93
IV.CSP1.EHZ. 2021-01-14T09:43:39.26 0.1 undecidable manual P 180 0.2014 129 -0.32 92
IV.CING.HHN. 2021-01-14T09:43:38.28 0.1 undecidable manual P 355 0.0827 155 -0.02 100
IV.EL6.EHZ. 2021-01-14T09:43:38.62 0.1 undecidable manual P 296 0.0836 154 0.31 95
IV.CPGN.EHZ. 2021-01-14T09:43:35.60 3.0 undecidable manual P -2.5 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EL6.EHE. ML:1.8 0.00043248415 0.16 AML other m 2021-01-14T09:43:41.91
IV.EL6.EHN. ML:1.6 0.0002730449 0.1408 AML other m 2021-01-14T09:43:41.85
IV.CSP1.EHE. ML:1.9 0.0003545 0.22 AML other m 2021-01-14T09:43:43.31
IV.CSP1.EHN. ML:2 0.0004895 0.2 AML other m 2021-01-14T09:43:43.70
IV.FDMO.HHE. ML:1.6 0.000143 0.18 AML other m 2021-01-14T09:43:45.30
IV.FDMO.HHN. ML:1.3 7.3327545E-5 0.1024 AML other m 2021-01-14T09:43:45.51
IV.CESI.HHE. ML:1.5 9.79E-5 0.24 AML other m 2021-01-14T09:43:48.67
IV.CESI.HHN. ML:1.5 9.5719125E-5 0.16 AML other m 2021-01-14T09:43:48.67
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