Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 24-01-2021 and time 00:06:57 (UTC) in region 5 km E Preci (PG)

A magnitude ML 1.9 earthquake occured in region: 5 km E Preci (PG), on

  • 24-01-2021 00:06:57 (UTC)
  • 24-01-2021 01:06:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.89, 13.09 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Preci PG 5 724 724
Visso MC 5 1107 1831
Castelsantangelo sul Nera MC 5 281 2112
Ussita MC 7 444 2556
Norcia PG 11 4957 7513
Sellano PG 14 1079 8592
Monte Cavallo MC 14 145 8737
Bolognola MC 16 142 8879
Cerreto di Spoleto PG 16 1075 9954
Fiordimonte MC 17 202 10156
Acquacanina MC 17 121 10277
Fiastra MC 17 559 10836
Pieve Torina MC 18 1458 12294
Montemonaco AP 19 604 12898
Pievebovigliana MC 19 866 13764
Cascia PG 20 3217 16981

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
56 Km W of Teramo (54892 inhabitants)
62 Km E of Perugia (166134 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
96 Km NE of Viterbo (67173 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 1.9 2021-01-24
00:06:57		 42.89 13.09 10 2021-01-24
00:12:21		 Sala Sismica INGV-Roma 86510481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 00:06:57 ± 0.06
Latitude 42.89 ± 0.00
Longitude 13.09 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86510481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 386
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
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) 79
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35343
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 35
Type of magnitude ML
Reference to an origin 86510481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-24 00:12:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SFI.HNZ. 2021-01-24T00:07:39.99 3.0 undecidable manual S -0.06 0
IV.ARVD.HHZ. 2021-01-24T00:07:19.22 3.0 undecidable manual S -0.43 0
IV.CESX.HHZ. 2021-01-24T00:07:13.98 3.0 undecidable manual S 0.03 0
IV.ASSB.HHZ. 2021-01-24T00:07:10.27 0.3 undecidable manual S 296 0.3534 50 -0.05 71
IV.RM33.HNZ. 2021-01-24T00:07:10.98 3.0 undecidable manual S -0.77 0
IV.ARVD.HHZ. 2021-01-24T00:07:09.38 3.0 negative manual P -0.34 0
IV.LNSS.HHZ. 2021-01-24T00:07:08.22 0.3 undecidable manual S 188 0.2887 50 -0.2 70
IV.GUMA.HHZ. 2021-01-24T00:07:07.39 0.3 undecidable manual S 45 0.2473 50 0.19 70
IV.MNTT.EHZ. 2021-01-24T00:07:06.14 3.0 negative manual P 0.18 0
IV.RM33.EHZ. 2021-01-24T00:07:06.46 3.0 undecidable manual P 1.18 0
IV.GAVE.EHZ. 2021-01-24T00:07:06.80 0.3 undecidable manual S 217 0.2455 50 -0.33 68
IV.TERO.HHZ. 2021-01-24T00:07:06.30 3.0 positive manual P -0.46 0
IV.CSP1.EHZ. 2021-01-24T00:07:05.78 0.3 undecidable manual S 22 0.2185 112 -0.49 66
IV.SAP2.EHZ. 2021-01-24T00:07:04.12 3.0 positive manual P 0 0
IV.MMO1.EHZ. 2021-01-24T00:07:04.33 0.3 undecidable manual S 87 0.1709 118 -0.3 70
IV.CESI.HHZ. 2021-01-24T00:07:04.96 0.1 undecidable manual S 310 0.1799 117 0.02 98
IV.LNSS.HHZ. 2021-01-24T00:07:04.03 0.6 undecidable manual P 188 0.2887 50 0.37 45
IV.ASSB.HHZ. 2021-01-24T00:07:04.64 0.1 positive manual P 296 0.3534 50 -0.12 93
IV.FDMO.HHZ. 2021-01-24T00:07:03.61 0.1 undecidable manual S 358 0.1475 122 -0.22 95
IV.GUMA.HHZ. 2021-01-24T00:07:03.07 0.1 undecidable manual P 45 0.2473 50 0.11 95
IV.CSP1.EHZ. 2021-01-24T00:07:03.06 0.3 undecidable manual P 22 0.2185 112 0.63 63
IV.MF5.EHZ. 2021-01-24T00:07:03.91 3.0 positive manual P 0.14 0
IV.SMA1.EHZ. 2021-01-24T00:07:03.90 3.0 negative manual P -0.09 0
IV.MTRA.EHZ. 2021-01-24T00:07:02.18 3.0 undecidable manual P -0.95 0
IT.MTCL.HGZ. 2021-01-24T00:07:02.97 0.3 undecidable manual S 327 0.125 126 -0.15 73
IV.GAVE.EHZ. 2021-01-24T00:07:02.92 0.6 positive manual P 217 0.2455 50 0 49
IV.CESI.HHZ. 2021-01-24T00:07:01.82 0.1 positive manual P 310 0.1799 117 0.17 96
IV.FDMO.HHZ. 2021-01-24T00:07:01.09 0.1 undecidable manual P 358 0.1475 122 0.08 98
IV.NRCA.HNZ. 2021-01-24T00:07:01.24 0.1 undecidable manual S 165 0.0576 147 -0.06 100
IV.MMO1.EHZ. 2021-01-24T00:07:01.43 0.1 undecidable manual P 87 0.1709 118 -0.05 98
IT.MTCL.HGZ. 2021-01-24T00:07:00.75 0.1 undecidable manual P 327 0.125 126 0.14 97
IV.NRCA.HNZ. 2021-01-24T00:06:59.84 0.1 negative manual P 165 0.0576 147 0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.7 0.00871 0.14 AML other m 2021-01-24T00:07:01.47
IV.NRCA.HNN. ML:2.7 0.008175 0.12 AML other m 2021-01-24T00:07:01.47
IV.NRCA.HHE. ML:2.8 0.0106 0.16 AML other m 2021-01-24T00:07:01.49
IV.NRCA.HNE. ML:2.8 0.010305 0.14 AML other m 2021-01-24T00:07:01.50
IV.FDMO.HHN. ML:1.8 0.0005845 1 AML other m 2021-01-24T00:07:03.89
IV.FDMO.HHE. ML:1.7 0.00044 0.56 AML other m 2021-01-24T00:07:04.94
IV.CESI.HNE. ML:1.9 0.0005915 0.2 AML other m 2021-01-24T00:07:05.08
IV.CESI.HNN. ML:2.4 0.001715 0.12 AML other m 2021-01-24T00:07:05.35
IV.CESI.HHN. ML:2.4 0.00177 0.12 AML other m 2021-01-24T00:07:05.35
IV.CESI.HHE. ML:2 0.0007155 0.98 AML other m 2021-01-24T00:07:05.67
IV.CSP1.EHN. ML:2.1 0.000718 0.78 AML other m 2021-01-24T00:07:07.18
IV.CSP1.EHE. ML:1.9 0.000466 1 AML other m 2021-01-24T00:07:07.76
IV.GAVE.EHE. ML:1.9 0.000422 1.68 AML other m 2021-01-24T00:07:08.08
IV.GAVE.EHN. ML:1.8 0.00034 1.4 AML other m 2021-01-24T00:07:08.14
IV.GUMA.HNN. ML:2 0.000518 0.28 AML other m 2021-01-24T00:07:09.56
IV.SAP2.EHN. ML:2.6 0.001815 1.84 AML other m 2021-01-24T00:07:10.06
IV.SAP2.EHE. ML:1.8 0.000275 0.12 AML other m 2021-01-24T00:07:10.06
IV.GUMA.HHE. ML:2 0.0006185 0.3 AML other m 2021-01-24T00:07:10.31
IV.GUMA.HNE. ML:2 0.000564 0.38 AML other m 2021-01-24T00:07:10.32
IV.GUMA.HHN. ML:2 0.000494 1.18 AML other m 2021-01-24T00:07:10.39
IV.LNSS.HHE. ML:1.7 0.0002225 0.7 AML other m 2021-01-24T00:07:10.97
IV.LNSS.HHN. ML:1.7 0.000227 0.92 AML other m 2021-01-24T00:07:11.90
IV.SMA1.EHN. ML:1.8 0.0002335 1.42 AML other m 2021-01-24T00:07:12.87
IV.ASSB.HHE. ML:1.6 0.0001505 0.24 AML other m 2021-01-24T00:07:12.45
IV.SMA1.EHE. ML:1.7 0.000218 1.16 AML other m 2021-01-24T00:07:13.09
IV.TERO.HHE. ML:1.6 0.00011 1.04 AML other m 2021-01-24T00:07:14.09
IV.ASSB.HHN. ML:1.6 0.0001535 0.92 AML other m 2021-01-24T00:07:14.12
IV.TERO.HHN. ML:1.7 0.00013265 0.6 AML other m 2021-01-24T00:07:14.44
IV.MNTT.EHE. ML:2.5 0.0008905 0.16 AML other m 2021-01-24T00:07:15.02
IV.MNTT.EHN. ML:2.3 0.0005955 1.16 AML other m 2021-01-24T00:07:15.76
IV.MTRA.EHN. ML:2 0.00058414965 0.14 AML other m 2021-01-24T00:07:08.67
IV.MTRA.HNE. ML:1.9 0.0004293105 0.14 AML other m 2021-01-24T00:07:09.36
IV.MTRA.HNN. ML:2 0.0005873215 0.14 AML other m 2021-01-24T00:07:08.66
IV.RM33.EHE. ML:1.4 7.64156E-5 0.22 AML other m 2021-01-24T00:07:13.56
IV.RM33.EHN. ML:1.4 7.5793E-5 0.16 AML other m 2021-01-24T00:07:13.69
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