Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 30-01-2020 and time 22:57:17 (UTC) in region 4 km W Trevi (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km W Trevi (PG), on

  • 30-01-2020 22:57:17 (UTC)
  • 30-01-2020 23:57:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8610, 12.7080 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.

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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
Trevi PG 4 8469 8469
Castel Ritaldi PG 5 3278 11747
Montefalco PG 6 5679 17426
Campello sul Clitunno PG 7 2442 19868
Foligno PG 11 57155 77023
Giano dell'Umbria PG 11 3846 80869
Bevagna PG 11 5081 85950
Gualdo Cattaneo PG 13 6155 92105
Spoleto PG 14 38218 130323
Spello PG 15 8645 138968
Vallo di Nera PG 16 364 139332
Massa Martana PG 18 3770 143102
Cerreto di Spoleto PG 18 1075 144177
Sant'Anatolia di Narco PG 18 564 144741
Cannara PG 18 4305 149046
Sellano PG 18 1079 150125
Scheggino PG 19 461 150586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Foligno (57155 inhabitants)
34 Km N of Terni (111501 inhabitants)
38 Km SE of Perugia (166134 inhabitants)
70 Km NE of Viterbo (67173 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
85 Km W of Teramo (54892 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 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 1.0 2020-01-30
22:57:17		 42.8613 12.7075 10 2020-07-18
21:08:25		 Bollettino Sismico Italiano INGV 77156581
Reviewed
Rev100 		ML 1.1 2020-01-30
22:57:17		 42.8583 12.7182 10 2020-01-30
23:03:27		 Sala Sismica INGV-Roma 76049381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-30 22:57:17 ± 0.05
Latitude 42.8613 ± 0.0027
Longitude 12.7075 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77156581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 315
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 175
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45506
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77156581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-09 16:06:30

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 10
Type of magnitude ML
Reference to an origin 76049381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-30 23:03:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SARZ.HHZ. 2020-01-30T22:58:50.90 3.0 undecidable manual Sn -0.24 0
IV.PZUN.HHZ. 2020-01-30T22:58:48.90 3.0 undecidable manual Sn 3.44 0
IV.NDIM.HNZ. 2020-01-30T22:57:57.11 3.0 undecidable manual Pn 0.45 0
IV.LAV9.HNZ. 2020-01-30T22:57:55.50 3.0 undecidable manual S -0.55 0
IV.MAGO.CHZ. 2020-01-30T22:57:48.12 3.0 negative manual Pg 3.26 0
IV.MMO1.EHZ. 2020-01-30T22:57:34.23 0.6 undecidable manual S 85 50.5161 50 0.27 48
IV.MC2.EHZ. 2020-01-30T22:57:31.46 0.6 undecidable manual S 82 39.5271 50 0.44 47
IV.ATCC.EHZ. 2020-01-30T22:57:30.35 0.6 undecidable manual S 351 36.3414 50 0.19 50
IV.FDMO.HHZ. 2020-01-30T22:57:30.01 0.6 undecidable manual S 58 36.4413 50 -0.19 50
IV.NRCA.HHZ. 2020-01-30T22:57:29.26 0.6 undecidable manual S 95 33.2445 50 -0.08 51
IV.CESX.HHZ. 2020-01-30T22:57:28.27 0.6 undecidable manual S 199 29.748 50 -0.13 51
IV.MMO1.EHZ. 2020-01-30T22:57:27.03 0.1 undecidable manual P 85 50.5161 50 -0.08 99
IV.GAVE.HNZ. 2020-01-30T22:57:27.03 0.6 undecidable manual S 141 24.1536 113 0.19 51
IV.CESI.HHZ. 2020-01-30T22:57:26.16 0.6 undecidable manual S 45 22.5552 114 -0.19 51
IV.MC2.EHZ. 2020-01-30T22:57:25.50 0.3 undecidable manual P 82 39.5271 50 0.08 76
IV.NRCA.HHZ. 2020-01-30T22:57:24.26 0.1 undecidable manual P 95 33.2445 50 -0.19 100
IV.FDMO.HHZ. 2020-01-30T22:57:24.96 0.3 undecidable manual P 58 36.4413 50 0.01 77
IV.ATCC.EHZ. 2020-01-30T22:57:24.92 0.3 undecidable manual P 351 36.3414 50 -0.01 77
IT.GNU.HGZ. 2020-01-30T22:57:23.46 0.6 undecidable manual S 240 12.876 128 0.03 54
IV.MOMA.HHZ. 2020-01-30T22:57:23.32 0.6 undecidable manual S 240 12.876 128 -0.11 53
IV.CESX.HHZ. 2020-01-30T22:57:23.73 0.3 undecidable manual P 199 29.748 50 -0.18 76
IV.CESI.HHZ. 2020-01-30T22:57:22.62 0.3 undecidable manual P 45 22.5552 114 -0.1 78
IV.GAVE.HNZ. 2020-01-30T22:57:22.96 0.3 undecidable manual P 141 24.1536 113 -0.05 78
IT.GNU.HGZ. 2020-01-30T22:57:21.34 0.3 undecidable manual P 240 12.876 128 0.3 76
IV.MOMA.HHZ. 2020-01-30T22:57:21.04 0.3 undecidable manual P 240 12.876 128 0 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.0 0.000101 0.4 AML other m 2020-01-30T22:57:23.43
IV.MOMA.HHE. ML:1.1 0.000127 0.2 AML other m 2020-01-30T22:57:24.57
IV.CESI.HHE. ML:0.8 0.000039 0.7 AML other m 2020-01-30T22:57:26.82
IV.CESI.HHN. ML:0.9 0.00004795 1.42 AML other m 2020-01-30T22:57:27.01
IV.NRCA.HHN. ML:1.2 0.000059 0.12 AML other m 2020-01-30T22:57:29.54
IV.NRCA.HHE. ML:1.2 0.0000651 0.6 AML other m 2020-01-30T22:57:30.62
IV.ATCC.EHN. ML:1.0 0.0000383 0.66 AML other m 2020-01-30T22:57:30.37
IV.ATCC.EHE. ML:0.8 0.0000258 0.42 AML other m 2020-01-30T22:57:39.40
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