Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 25-02-2020 and time 10:47:54 (Italy) in region 5 km NW Spoleto (PG)

A magnitude ML 1.4 earthquake occured in region: 5 km NW Spoleto (PG), on

  • 25-02-2020 09:47:54 (UTC)
  • 25-02-2020 10:47:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7750, 12.7170 at 11 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
Spoleto PG 5 38218 38218
Castel Ritaldi PG 7 3278 41496
Campello sul Clitunno PG 7 2442 43938
Sant'Anatolia di Narco PG 11 564 44502
Scheggino PG 12 461 44963
Trevi PG 12 8469 53432
Vallo di Nera PG 12 364 53796
Giano dell'Umbria PG 13 3846 57642
Montefalco PG 14 5679 63321
Massa Martana PG 16 3770 67091
Acquasparta TR 17 4778 71869
Cerreto di Spoleto PG 17 1075 72944
Ferentillo TR 18 1913 74857
Poggiodomo PG 19 117 74974
Bevagna PG 20 5081 80055
Gualdo Cattaneo PG 20 6155 86210
Montefranco TR 20 1276 87486

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Foligno (57155 inhabitants)
24 Km N of Terni (111501 inhabitants)
46 Km SE of Perugia (166134 inhabitants)
64 Km NE of Viterbo (67173 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
86 Km N of Guidonia Montecelio (88673 inhabitants)
90 Km N of Tivoli (56533 inhabitants)
100 Km N of Roma (2864731 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 1.4 2020-02-25
09:47:54		 42.7747 12.7172 11 2020-07-18
21:08:38		 Bollettino Sismico Italiano INGV 79660511
Reviewed
Rev100 		ML 1.4 2020-02-25
09:47:54		 42.7713 12.7247 10 2020-02-25
10:00:38		 Sala Sismica INGV-Roma 76795591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-25 09:47:54 ± 0.06
Latitude 42.7747 ± 0.0045
Longitude 12.7172 ± 0.0061
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79660511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 622
Semi-minor axis of confidence ellipse (meter) 346
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 227
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.11152
Epicentral distance of station farthest from the epicenter (degree) 0.50812
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 76795591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-25 10:00:38

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 79660511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-28 15:56:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHZ. 2020-02-25T09:48:08.75 0.6 undecidable manual S 68 41.2254 50 0.27 46
IV.FDMO.HHZ. 2020-02-25T09:48:08.34 0.6 undecidable manual S 46 41.8248 50 -0.28 46
IV.LNSS.HHZ. 2020-02-25T09:48:06.32 0.6 undecidable manual S 126 32.5452 50 0.18 48
IV.CESI.HHZ. 2020-02-25T09:48:05.36 0.6 undecidable manual S 31 29.748 50 -0.04 49
IV.NRCA.HHZ. 2020-02-25T09:48:05.94 0.6 undecidable manual S 78 32.9448 50 -0.32 46
IV.MURB.HHZ. 2020-02-25T09:48:05.15 1.0 undecidable manual P 344 56.3991 50 0.06 23
IV.CSP1.EHZ. 2020-02-25T09:48:04.78 0.6 undecidable manual P 48 53.0025 50 0.22 45
IV.MMO1.EHZ. 2020-02-25T09:48:04.39 0.3 positive manual P 74 51.5151 50 0.06 71
IV.RM33.EHZ. 2020-02-25T09:48:03.86 0.1 undecidable manual P 126 50.2164 50 -0.27 90
IV.FDMO.HHZ. 2020-02-25T09:48:02.86 1.0 undecidable manual P 46 41.8248 50 0.02 24
IV.MC2.EHZ. 2020-02-25T09:48:02.91 0.1 undecidable manual P 68 41.2254 50 0.15 94
IV.LNSS.HHZ. 2020-02-25T09:48:01.47 0.1 undecidable manual P 126 32.5452 50 0.06 97
IV.CESI.HHZ. 2020-02-25T09:48:01.01 0.1 undecidable manual P 31 29.748 50 0.03 98
IV.NRCA.HHZ. 2020-02-25T09:48:01.41 0.1 undecidable manual P 78 32.9448 50 -0.07 97
IV.GAVE.EHZ. 2020-02-25T09:48:01.87 0.6 undecidable manual S 122 17.0718 122 -0.08 50
IV.MOMA.HHZ. 2020-02-25T09:48:00.42 0.6 undecidable manual S 285 12.3765 131 -0.22 49
IV.GAVE.EHZ. 2020-02-25T09:47:59.05 0.1 undecidable manual P 122 17.0718 122 0.07 100
IV.MOMA.HHZ. 2020-02-25T09:47:58.33 0.1 positive manual P 285 12.3765 131 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNE. ML:1.5 0.0003351524 0.128 AML other m 2020-02-25T09:48:00.90
IV.MOMA.HHE. ML:1.5 0.0003655665 0.1152 AML other m 2020-02-25T09:48:00.90
IV.MOMA.HNN. ML:1.6 0.000385743 0.2432 AML other m 2020-02-25T09:48:01.44
IV.MOMA.HHN. ML:1.6 0.00039041674999999997 0.2432 AML other m 2020-02-25T09:48:01.32
IV.GAVE.EHE. ML:1.6 0.0003617493 0.1408 AML other m 2020-02-25T09:48:02.46
IV.GAVE.EHN. ML:1.4 0.00021725145 0.1408 AML other m 2020-02-25T09:48:02.60
IV.GAVE.HNE. ML:1.6 0.00034332629999999997 0.1472 AML other m 2020-02-25T09:48:02.39
IV.CESI.HHE. ML:1.0 0.00004789297 0.4416 AML other m 2020-02-25T09:48:08.50
IV.CESI.HHN. ML:1.3 0.00010562427 0.4032 AML other m 2020-02-25T09:48:07.77
IV.NRCA.HNE. ML:1.5 0.00014248729999999997 0.128 AML other m 2020-02-25T09:48:07.23
IV.NRCA.HHN. ML:1.4 0.00010166636000000001 0.096 AML other m 2020-02-25T09:48:07.80
IV.NRCA.HHE. ML:1.5 0.0001356136 0.1152 AML other m 2020-02-25T09:48:07.24
IV.LNSS.HHE. ML:1.3 0.00009606803999999999 0.1152 AML other m 2020-02-25T09:48:07.45
IV.LNSS.HHN. ML:1.3 0.0000784022 0.16 AML other m 2020-02-25T09:48:08.11
IV.FDMO.HHN. ML:1.0 0.000033395689999999995 0.1792 AML other m 2020-02-25T09:48:09.53
IV.FDMO.HHE. ML:1.0 0.000034628405 0.1216 AML other m 2020-02-25T09:48:10.53
IV.RM33.EHE. ML:1.0 0.000026474684999999998 0.1792 AML other m 2020-02-25T09:48:13.13
IV.RM33.EHN. ML:1.0 0.000024628615 0.3392 AML other m 2020-02-25T09:48:18.37
IV.CSP1.EHN. ML:1.2 0.000041655009999999994 0.2752 AML other m 2020-02-25T09:48:12.32
IV.CSP1.EHE. ML:1.2 0.000033884447 0.4224 AML other m 2020-02-25T09:48:12.62
IV.MURB.HHE. ML:1.6 0.00008005908999999999 0.2176 AML other m 2020-02-25T09:48:15.32
IV.MURB.HHN. ML:1.4 0.000056102245 0.2048 AML other m 2020-02-25T09:48:15.14
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