Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 23-02-2022 and time 15:34:35 (Italy) in region 3 km SW Visso (MC)

A magnitude ML 0.4 earthquake occured in region: 3 km SW Visso (MC), on

  • 23-02-2022 14:34:35 (UTC)
  • 23-02-2022 15:34:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9140, 13.0670 at 8 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.

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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
Visso MC 3 1107 1107
Preci PG 4 724 1831
Ussita MC 7 444 2275
Castelsantangelo sul Nera MC 7 281 2556
Monte Cavallo MC 10 145 2701
Sellano PG 12 1079 3780
Norcia PG 14 4957 8737
Fiordimonte MC 14 202 8939
Pieve Torina MC 15 1458 10397
Fiastra MC 16 559 10956
Acquacanina MC 16 121 11077
Bolognola MC 16 142 11219
Cerreto di Spoleto PG 16 1075 12294
Pievebovigliana MC 17 866 13160
Muccia MC 19 915 14075
Serravalle di Chienti MC 20 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
59 Km E of Perugia (166134 inhabitants)
59 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
96 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 0.4 2022-02-23
14:34:35		 42.9143 13.0668 8 2022-07-08
12:33:33		 Bollettino Sismico Italiano INGV 101451821
Reviewed
Rev100 		ML 0.3 2022-02-23
14:34:35		 42.9172 13.0667 8 2022-02-23
14:50:28		 Sala Sismica INGV-Roma 101384301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-02-23 14:34:35 ± 0.16
Latitude 42.9143 ± 0.0027
Longitude 13.0668 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101451821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.08813
Epicentral distance of station farthest from the epicenter (degree) 0.20415
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 101451821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-25 16:52:07

ML:0.3

Field Value
Value 0.3
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 101384301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-02-23 14:50:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2022-02-23T14:34:43.39 0.3 undecidable manual S 30 22.6551 110 -0.03 73
7F.SIB2.EHZ. 2022-02-23T14:34:42.21 0.3 undecidable manual S 98 19.4694 113 -0.16 72
7F.SIB1.EHZ. 2022-02-23T14:34:41.77 0.3 undecidable manual S 97 16.6722 116 0.27 71
7F.SIB3.EHZ. 2022-02-23T14:34:41.40 0.3 undecidable manual S 105 17.0718 115 -0.23 71
IV.CESI.HHZ. 2022-02-23T14:34:41.33 0.3 undecidable manual S 307 16.5723 116 -0.14 72
IV.FDMO.HHZ. 2022-02-23T14:34:40.63 0.3 undecidable manual S 7 13.6752 121 0.05 74
7F.SIB2.EHZ. 2022-02-23T14:34:39.13 0.1 undecidable manual P 98 19.4694 113 -0.16 96
IV.NRCA.HNZ. 2022-02-23T14:34:39.43 0.3 undecidable manual S 157 9.7791 130 -0.04 75
IV.CSP1.EHZ. 2022-02-23T14:34:39.82 0.3 undecidable manual P 30 22.6551 110 -0.07 73
7F.SIB3.EHZ. 2022-02-23T14:34:38.88 0.1 undecidable manual P 105 17.0718 115 0.02 99
IV.CESI.HHZ. 2022-02-23T14:34:38.95 0.3 undecidable manual P 307 16.5723 116 0.19 72
IV.FDMO.HHZ. 2022-02-23T14:34:38.17 0.1 undecidable manual P 7 13.6752 121 -0.08 98
7F.SIB1.EHZ. 2022-02-23T14:34:38.85 0.1 undecidable manual P 97 16.6722 116 0.07 98
IV.NRCA.HNZ. 2022-02-23T14:34:37.58 0.1 undecidable manual P 157 9.7791 130 -0.03 100
IV.MC2.EHZ. 2022-02-23T14:34:37.93 0.1 undecidable manual P 92 9.879 129 0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.3 0.00002236223 0.1408 AML other m 2022-02-23T14:34:41.12
IV.FDMO.HHN. ML:0.4 0.000024600465 0.1408 AML other m 2022-02-23T14:34:41.19
IV.NRCA.HHN. ML:0.4 0.000034925369999999994 0.0768 AML other m 2022-02-23T14:34:39.67
IV.NRCA.HHE. ML:0.6 0.00006199276 0.096 AML other m 2022-02-23T14:34:39.69
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