Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 03-02-2021 and time 09:28:07 (Italy) in region Preci (PG)

A magnitude ML 1.1 earthquake occured in region: Preci (PG), on

  • 03-02-2021 08:28:07 (UTC)
  • 03-02-2021 09:28:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8830, 13.0420 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 0 724 724
Visso MC 7 1107 1831
Castelsantangelo sul Nera MC 9 281 2112
Sellano PG 9 1079 3191
Ussita MC 11 444 3635
Norcia PG 11 4957 8592
Cerreto di Spoleto PG 12 1075 9667
Monte Cavallo MC 13 145 9812
Fiordimonte MC 18 202 10014
Pieve Torina MC 18 1458 11472
Cascia PG 18 3217 14689
Vallo di Nera PG 19 364 15053
Fiastra MC 20 559 15612
Bolognola MC 20 142 15754
Acquacanina MC 20 121 15875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
59 Km E of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
99 Km W of Montesilvano (53738 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
Bulletin
Rev1000 		ML 1.1 2021-02-03
08:28:07		 42.8832 13.0422 10 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90177701
Reviewed
Rev100 		ML 1.2 2021-02-03
08:28:07		 42.869 13.0367 13 2021-02-03
08:32:55		 Sala Sismica INGV-Roma 86799831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-03 08:28:07 ± 0.13
Latitude 42.8832 ± 0.0054
Longitude 13.0422 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90177701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 665
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 217
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24012
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 86799831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-03 08:32:55

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 90177701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-17 00:03:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.RONC.HNZ. 2021-02-03T08:29:14.45 3.0 undecidable manual Pg 17.950001 0
IV.FOSV.EHZ. 2021-02-03T08:29:07.19 3.0 undecidable manual Sg 9.89 0
IV.HCRL.HHZ. 2021-02-03T08:28:51.11 3.0 undecidable manual Sn 8.72 0
IV.ERC.EHZ. 2021-02-03T08:28:45.04 3.0 undecidable manual Sn -3.47 0
IV.NOV.HHZ. 2021-02-03T08:28:27.91 3.0 undecidable manual Sn 3.77 0
IV.SENA.HHZ. 2021-02-03T08:28:24.90 3.0 undecidable manual Pn -4.39 0
IV.RIBO.EHZ.01 2021-02-03T08:28:22.32 3.0 undecidable manual Pn -1.29 0
IV.SCTE.HHZ. 2021-02-03T08:28:19.43 3.0 undecidable manual Sn 0.52 0
IV.CSP1.EHZ. 2021-02-03T08:28:17.22 0.6 undecidable manual S 30 26.6511 50 -0.06 48
IV.MMO1.EHZ. 2021-02-03T08:28:16.05 0.6 undecidable manual S 85 23.1546 114 -0.29 46
IV.CESI.HHZ. 2021-02-03T08:28:14.48 0.3 undecidable manual S 320 17.5713 120 -0.11 73
IV.FDMO.HHZ. 2021-02-03T08:28:14.42 0.3 undecidable manual S 12 17.3715 121 -0.13 73
IV.MC2.EHZ. 2021-02-03T08:28:13.51 0.6 undecidable manual S 75 12.3765 130 0.4 46
IV.CSP1.EHZ. 2021-02-03T08:28:13.18 0.3 undecidable manual P 30 26.6511 50 0.02 73
IV.MMO1.EHZ. 2021-02-03T08:28:12.47 0.1 undecidable manual P 85 23.1546 114 -0.15 96
IV.NRCA.HHZ. 2021-02-03T08:28:11.89 0.3 undecidable manual S 133 8.0808 142 -0.18 73
IV.FDMO.HHZ. 2021-02-03T08:28:11.67 0.1 undecidable manual P 12 17.3715 121 0.08 98
IV.CESI.HHZ. 2021-02-03T08:28:11.66 0.1 negative manual P 320 17.5713 120 0.05 99
IV.NRCA.HHZ. 2021-02-03T08:28:10.21 0.1 undecidable manual P 133 8.0808 142 0.06 100
IV.MC2.EHZ. 2021-02-03T08:28:10.99 0.1 undecidable manual P 75 12.3765 130 0.23 96
IV.ARRO.EHZ. 2021-02-03T08:28:08.70 3.0 positive manual Pg 1.74 0
MN.KEK.HHZ. 2021-02-03T08:28:04.78 3.0 negative manual Pn -2.7 0
IV.COLB.HHZ. 2021-02-03T08:27:56.65 3.0 undecidable manual S -1.86 0
IV.CRTO.HHZ. 2021-02-03T08:27:49.08 3.0 undecidable manual S -4.8 0
IV.IVPL.HHZ. 2021-02-03T08:27:49.31 3.0 undecidable manual Pn -2.16 0
IV.LPEL.HHZ. 2021-02-03T08:27:45.37 3.0 undecidable manual Pg -6.66 0
IV.SCHR.EHZ. 2021-02-03T08:27:26.23 3.0 undecidable manual P -0.61 0
IX.SFL3.HNZ.01 2021-02-03T08:27:21.97 3.0 negative manual P -7.65 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.5 0.000432 1.88 AML other m 2021-02-03T08:28:12.94
IV.NRCA.HHE. ML:1.1 0.00017649999999999998 0.48 AML other m 2021-02-03T08:28:12.60
IV.FDMO.HHN. ML:0.9 0.00006775000000000001 0.4 AML other m 2021-02-03T08:28:14.63
IV.FDMO.HHE. ML:1.2 0.000128 0.16 AML other m 2021-02-03T08:28:14.71
IV.CESI.HHE. ML:1.0 0.00008649999999999999 0.26 AML other m 2021-02-03T08:28:14.88
IV.CESI.HHN. ML:1.0 0.0000878 0.32 AML other m 2021-02-03T08:28:14.77
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