Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.2 on date 01-05-2021 and time 01:11:52 (UTC) in region 2 km NW Monte Cavallo (MC)

A magnitude ML 0.2 earthquake occured in region: 2 km NW Monte Cavallo (MC), on

  • 01-05-2021 01:11:52 (UTC)
  • 01-05-2021 03:11:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0060, 12.9830 at 12 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
Monte Cavallo MC 2 145 145
Pieve Torina MC 7 1458 1603
Serravalle di Chienti MC 8 1070 2673
Fiordimonte MC 9 202 2875
Muccia MC 10 915 3790
Pievebovigliana MC 11 866 4656
Visso MC 12 1107 5763
Sellano PG 14 1079 6842
Ussita MC 14 444 7286
Fiastra MC 15 559 7845
Preci PG 15 724 8569
Acquacanina MC 16 121 8690
Sefro MC 16 422 9112
Camerino MC 16 6974 16086
Castelsantangelo sul Nera MC 19 281 16367
Pioraco MC 19 1134 17501
Nocera Umbra PG 20 5839 23340
Valtopina PG 20 1398 24738

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
70 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
93 Km S of Fano (60888 inhabitants)
97 Km NE of Viterbo (67173 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 0.2 2021-05-01
01:11:52		 43.0057 12.983 13 2021-12-29
11:12:06		 Bollettino Sismico Italiano INGV 91658671
Reviewed
Rev100 		ML 0.2 2021-05-01
01:11:52		 43.0083 12.9917 11 2021-05-01
06:57:29		 Sala Sismica INGV-Roma 89652761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-01 01:11:52 ± 0.08
Latitude 43.0057 ± 0.0027
Longitude 12.9830 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91658671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 269
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 340
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
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 8
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 89652761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-01 06:57:29

ML:0.2

Field Value
Value 0.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 91658671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-21 13:48:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SAMA.EHZ. 2021-05-01T01:12:26.76 3.0 undecidable manual S 0.01 0
IV.PE3.EHZ. 2021-05-01T01:12:10.18 3.0 undecidable manual P 0 0
IV.ASSB.HHN. 2021-05-01T01:12:01.86 0.6 undecidable manual S 279 26.6511 96 -0.14 47
IV.CSP1.EHZ. 2021-05-01T01:12:00.38 0.3 undecidable manual S 62 20.3685 101 0.03 73
IV.NRCA.HNZ. 2021-05-01T01:12:00.66 0.3 undecidable manual S 151 21.867 99 -0.08 73
IV.MML1.HNE. 2021-05-01T01:11:58.21 0.3 undecidable manual S 356 11.9769 121 -0.05 74
IV.NRCA.HNZ. 2021-05-01T01:11:57.17 0.3 undecidable manual P 151 21.867 99 -0.05 73
IV.CSP1.EHZ. 2021-05-01T01:11:57.06 0.6 undecidable manual P 62 20.3685 101 0.06 49
IV.ASSB.HHN. 2021-05-01T01:11:57.96 0.6 undecidable manual P 279 26.6511 96 0.01 49
IV.CESI.HHZ. 2021-05-01T01:11:57.16 0.1 undecidable manual S 269 6.3936 145 0 100
IV.FDMO.HHZ. 2021-05-01T01:11:57.50 0.3 undecidable manual S 68 9.0798 133 -0.14 73
IV.CESI.HHZ. 2021-05-01T01:11:55.32 0.1 positive manual P 269 6.3936 145 0.16 99
IV.FDMO.HHZ. 2021-05-01T01:11:55.58 0.3 undecidable manual P 68 9.0798 133 0.14 73
IV.MML1.HNE. 2021-05-01T01:11:55.65 1.0 undecidable manual P 356 11.9769 121 -0.14 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.3 0.000023899999999999998 0.08 AML other m 2021-05-01T01:11:57.38
IV.FDMO.HHN. ML:0.1 0.00001635 0.48 AML other m 2021-05-01T01:11:57.73
IV.CESI.HHE. ML:0.4 0.00002915 0.74 AML other m 2021-05-01T01:11:58.37
IV.FDMO.HHE. ML:0.1 0.00001375 0.88 AML other m 2021-05-01T01:11:58.70
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