Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 18-01-2021 and time 14:27:29 (Italy) in region 2 km S Preci (PG)

A magnitude ML 0.9 earthquake occured in region: 2 km S Preci (PG), on

  • 18-01-2021 13:27:29 (UTC)
  • 18-01-2021 14:27:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8590, 13.0460 at 11 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
Preci PG 2 724 724
Norcia PG 8 4957 5681
Visso MC 9 1107 6788
Castelsantangelo sul Nera MC 10 281 7069
Sellano PG 10 1079 8148
Cerreto di Spoleto PG 11 1075 9223
Ussita MC 12 444 9667
Monte Cavallo MC 16 145 9812
Cascia PG 16 3217 13029
Vallo di Nera PG 18 364 13393
Poggiodomo PG 19 117 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
99 Km N of Guidonia Montecelio (88673 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.9 2021-01-18
13:27:29		 42.859 13.0462 11 2021-01-18
13:35:39		 Sala Sismica INGV-Roma 86353091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-18 13:27:29 ± 0.11
Latitude 42.8590 ± 0.0054
Longitude 13.0462 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86353091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 672
Semi-minor axis of confidence ellipse (meter) 369
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 221
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 208
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25990
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 86353091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-18 13:35:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2021-01-18T13:27:43.63 3.0 undecidable manual S 0.47 0
IV.CSP1.EHZ. 2021-01-18T13:27:40.21 0.3 undecidable manual S 26 28.8489 50 0.04 74
IV.MMO1.EHZ. 2021-01-18T13:27:38.52 0.3 undecidable manual S 79 23.2545 50 -0.16 72
IV.FDMO.HHZ. 2021-01-18T13:27:37.67 0.6 undecidable manual S 10 19.9689 50 -0.13 48
IV.CESI.HHZ. 2021-01-18T13:27:37.68 0.6 undecidable manual S 325 19.869 50 -0.09 48
IV.MC2.EHZ. 2021-01-18T13:27:36.05 0.3 undecidable manual S 63 12.9759 130 0.14 73
IV.CSP1.EHZ. 2021-01-18T13:27:35.92 0.1 undecidable manual P 26 28.8489 50 0.05 98
IV.FDMO.HHZ. 2021-01-18T13:27:34.56 0.1 undecidable manual P 10 19.9689 50 0.06 100
IV.NRCA.HHZ. 2021-01-18T13:27:34.17 0.3 undecidable manual S 117 6.1938 151 -0.22 74
IV.CESI.HHZ. 2021-01-18T13:27:34.71 0.3 undecidable manual P 325 19.869 50 0.23 74
IV.MMO1.EHZ. 2021-01-18T13:27:34.97 0.1 undecidable manual P 79 23.2545 50 -0.04 98
IV.MC2.EHZ. 2021-01-18T13:27:33.60 0.1 undecidable manual P 63 12.9759 130 0.19 98
IV.NRCA.HHZ. 2021-01-18T13:27:32.62 0.6 undecidable manual P 117 6.1938 151 0.09 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.1 0.0001985 0.1 AML other m 2021-01-18T13:27:34.25
IV.NRCA.HHE. ML:0.8 0.00008335537500000001 0.064 AML other m 2021-01-18T13:27:34.47
IV.NRCA.HNE. ML:0.8 0.000090255227 0.5248 AML other m 2021-01-18T13:27:32.52
IV.NRCA.HNN. ML:1.3 0.000313630625 0.6976 AML other m 2021-01-18T13:27:39.56
IV.FDMO.HHE. ML:0.5 0.000023309023000000003 0.1792 AML other m 2021-01-18T13:27:37.85
IV.FDMO.HHN. ML:0.3 0.000012938198000000002 0.16 AML other m 2021-01-18T13:27:37.95
IV.CESI.HNE. ML:1.2 0.00010400066499999999 0.5696 AML other m 2021-01-18T13:27:38.54
IV.CESI.HNN. ML:1.3 0.00014638771 0.9792 AML other m 2021-01-18T13:27:34.45
IV.CESI.HHE. ML:0.3 0.000014378321 0.2432 AML other m 2021-01-18T13:27:39.76
IV.CESI.HHN. ML:0.6 0.000029189865 0.1216 AML other m 2021-01-18T13:27:38.28
IV.CSP1.EHE. ML:1.4 0.00013434080000000002 2.1568 AML other m 2021-01-18T13:27:48.50
IV.CSP1.EHN. ML:1.1 0.00006263211 1.1584 AML other m 2021-01-18T13:27:47.40
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download