Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 30-07-2020 and time 21:30:49 (UTC) in region 3 km N Preci (PG)

A magnitude ML 1.2 earthquake occured in region: 3 km N Preci (PG), on

  • 30-07-2020 21:30:49 (UTC)
  • 30-07-2020 23:30:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9070, 13.0370 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 3 724 724
Visso MC 5 1107 1831
Sellano PG 9 1079 2910
Ussita MC 9 444 3354
Castelsantangelo sul Nera MC 10 281 3635
Monte Cavallo MC 10 145 3780
Norcia PG 14 4957 8737
Cerreto di Spoleto PG 14 1075 9812
Fiordimonte MC 15 202 10014
Pieve Torina MC 15 1458 11472
Fiastra MC 17 559 12031
Pievebovigliana MC 18 866 12897
Acquacanina MC 18 121 13018
Bolognola MC 18 142 13160
Muccia MC 20 915 14075
Serravalle di Chienti MC 20 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
57 Km E of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
94 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
Reviewed
Rev100 		ML 1.2 2020-07-30
21:30:49		 42.9072 13.0372 11 2020-07-30
21:35:32		 Sala Sismica INGV-Roma 81498561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-30 21:30:49 ± 0.04
Latitude 42.9072 ± 0.0027
Longitude 13.0372 ± 0.0037
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 81498561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 259
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 26
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42448
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 81498561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-30 21:35:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-07-30T21:31:01.32 3.0 negative manual P -0.04 0
IV.GUMA.HNZ. 2020-07-30T21:31:00.33 0.3 undecidable manual S 54 29.748 50 0.51 67
IV.SSFR.HHZ. 2020-07-30T21:31:00.61 3.0 positive manual P -0.14 0
IV.CSP1.EHZ. 2020-07-30T21:30:58.31 0.3 undecidable manual S 34 24.5532 50 -0.14 73
IV.GAVE.EHZ. 2020-07-30T21:30:58.88 0.3 undecidable manual S 206 26.5512 50 -0.09 73
IV.EL6.EHZ. 2020-07-30T21:30:58.08 0.6 undecidable manual P 6 47.1195 50 0 48
IV.MMO1.EHZ. 2020-07-30T21:30:57.87 0.3 undecidable manual S 92 23.5542 50 -0.3 71
IV.ATCC.EHZ. 2020-07-30T21:30:57.79 1.0 undecidable manual P 314 44.622 50 0.1 24
IV.MML1.HNZ. 2020-07-30T21:30:57.92 0.3 undecidable manual S 347 23.4543 50 -0.23 72
IV.MOMA.HHZ. 2020-07-30T21:30:57.07 0.3 undecidable manual P 253 39.627 50 0.14 71
IV.ARRO.EHZ. 2020-07-30T21:30:57.37 3.0 negative manual P -0.16 0
IV.ASSB.HHZ. 2020-07-30T21:30:56.11 0.6 undecidable manual P 296 34.2435 50 0.02 49
IV.FDMO.HHZ. 2020-07-30T21:30:55.55 0.3 undecidable manual S 16 14.874 126 -0.19 73
IV.MC2.EHZ. 2020-07-30T21:30:55.08 0.3 undecidable manual S 88 12.3765 131 0.04 76
IV.GUMA.HNZ. 2020-07-30T21:30:55.62 0.3 undecidable manual P 54 29.748 50 0.22 71
IV.CESI.HHZ. 2020-07-30T21:30:55.75 0.3 undecidable manual S 315 15.2736 125 -0.1 75
IV.PF6.EHZ. 2020-07-30T21:30:55.04 0.6 undecidable manual P 26 28.5492 50 -0.18 48
IV.GAVE.EHZ. 2020-07-30T21:30:54.92 0.1 positive manual P 206 26.5512 50 0.01 99
IV.NRCA.HNZ. 2020-07-30T21:30:54.32 0.1 undecidable manual S 142 10.2786 136 -0.21 98
IT.MTCL.HGZ. 2020-07-30T21:30:54.36 0.1 undecidable manual S 342 10.0788 137 -0.12 100
IV.MMO1.EHZ. 2020-07-30T21:30:54.37 0.6 positive manual P 92 23.5542 50 -0.08 49
IV.MML1.HNZ. 2020-07-30T21:30:54.38 0.1 undecidable manual P 347 23.4543 50 -0.05 99
IV.CSP1.EHZ. 2020-07-30T21:30:54.57 0.3 positive manual P 34 24.5532 50 -0.04 74
IV.CESI.HHZ. 2020-07-30T21:30:53.29 0.3 positive manual P 315 15.2736 125 0.19 73
IV.FDMO.HHZ. 2020-07-30T21:30:53.10 0.3 undecidable manual P 16 14.874 126 0.06 75
IV.MC2.EHZ. 2020-07-30T21:30:52.81 0.6 negative manual P 88 12.3765 131 0.17 49
IV.FEMA.HNZ. 2020-07-30T21:30:52.09 0.3 undecidable manual P 9 6.1938 150 0.25 74
IV.NRCA.HNZ. 2020-07-30T21:30:52.42 0.3 undecidable manual P 142 10.2786 136 0.08 76
IT.MTCL.HGZ. 2020-07-30T21:30:52.46 0.3 undecidable manual P 342 10.0788 137 0.14 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.8 0.000715 0.14 AML other m 2020-07-30T21:30:54.44
IV.NRCA.HHE. ML:1.6 0.000481 0.08 AML other m 2020-07-30T21:30:55.11
IV.CESI.HHE. ML:1.4 0.000231 1.88 AML other m 2020-07-30T21:30:55.00
IV.CESI.HHN. ML:1.5 0.0002965 0.46 AML other m 2020-07-30T21:30:56.32
IV.CSP1.EHE. ML:1.5 0.00019 1.76 AML other m 2020-07-30T21:30:58.01
IV.CSP1.EHN. ML:1.4 0.00014150000000000002 1.66 AML other m 2020-07-30T21:30:59.94
IV.GAVE.EHE. ML:1.4 0.00014250000000000002 0.2 AML other m 2020-07-30T21:30:59.81
IV.GAVE.EHN. ML:1.5 0.00016599999999999997 0.48 AML other m 2020-07-30T21:30:59.72
IV.ASSB.HHE. ML:0.9 0.0000281 0.34 AML other m 2020-07-30T21:31:01.55
IV.ASSB.HHN. ML:0.8 0.0000258 0.28 AML other m 2020-07-30T21:31:01.50
IV.ARRO.EHE. ML:0.8 0.00001765 0.54 AML other m 2020-07-30T21:31:04.50
IV.ARRO.EHN. ML:0.8 0.0000206 0.66 AML other m 2020-07-30T21:31:04.98
IV.MOMA.HHE. ML:1.1 0.0000428 1.34 AML other m 2020-07-30T21:31:04.71
IV.MOMA.HHN. ML:1.1 0.00004675 0.18 AML other m 2020-07-30T21:31:04.64
IV.EL6.EHE. ML:1.2 0.00005115 0.54 AML other m 2020-07-30T21:31:07.21
IV.EL6.EHN. ML:1.2 0.00004735 0.5 AML other m 2020-07-30T21:31:08.73
IV.SSFR.HHE. ML:1.0 0.00002235 0.2 AML other m 2020-07-30T21:31:10.16
IV.SSFR.HHN. ML:1.1 0.00002355 0.38 AML other m 2020-07-30T21:31:13.45
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