Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 25-02-2020 and time 10:36:38 (Italy) in region 2 km E Spoleto (PG)

A magnitude ML 1.1 earthquake occured in region: 2 km E Spoleto (PG), on

  • 25-02-2020 09:36:38 (UTC)
  • 25-02-2020 10:36:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7420, 12.7570 at 10 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
Spoleto PG 2 38218 38218
Sant'Anatolia di Narco PG 7 564 38782
Scheggino PG 7 461 39243
Campello sul Clitunno PG 9 2442 41685
Vallo di Nera PG 9 364 42049
Castel Ritaldi PG 11 3278 45327
Ferentillo TR 14 1913 47240
Poggiodomo PG 15 117 47357
Trevi PG 15 8469 55826
Cerreto di Spoleto PG 16 1075 56901
Montefranco TR 16 1276 58177
Arrone TR 18 2763 60940
Giano dell'Umbria PG 18 3846 64786
Acquasparta TR 18 4778 69564
Polino TR 19 233 69797
Monteleone di Spoleto PG 19 599 70396
Montefalco PG 19 5679 76075
Massa Martana PG 19 3770 79845

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Terni (111501 inhabitants)
24 Km S of Foligno (57155 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
64 Km NE of Viterbo (67173 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
82 Km N of Guidonia Montecelio (88673 inhabitants)
87 Km N of Tivoli (56533 inhabitants)
97 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
Reviewed
Rev100 		ML 1.1 2020-02-25
09:36:38		 42.742 12.7573 10 2020-02-25
10:10:37		 Sala Sismica INGV-Roma 76795751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-25 09:36:38 ± 0.04
Latitude 42.7420 ± 0.0027
Longitude 12.7573 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76795751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 257
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 20
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) 0.11242
Epicentral distance of station farthest from the epicenter (degree) 0.40919
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 76795751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-25 10:10:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-02-25T09:36:53.06 0.6 undecidable manual S 39 42.2244 50 0.32 46
IV.RM33.EHZ. 2020-02-25T09:36:53.87 0.6 undecidable manual S 125 45.4212 50 0.3 46
IV.NRCA.HHZ. 2020-02-25T09:36:49.73 0.3 undecidable manual S 71 30.747 50 0.06 74
IV.CESI.HHZ. 2020-02-25T09:36:49.90 0.1 undecidable manual S 22 31.5462 50 0.03 99
IV.LNSS.HHZ. 2020-02-25T09:36:48.77 0.3 undecidable manual S 124 27.75 50 -0.09 74
IV.RM33.EHZ. 2020-02-25T09:36:47.01 0.3 undecidable manual P 125 45.4212 50 -0.32 68
IV.CESX.HHZ. 2020-02-25T09:36:46.59 0.3 undecidable manual S 223 20.3685 117 -0.12 74
IV.FDMO.HHZ. 2020-02-25T09:36:46.70 0.3 undecidable manual P 39 42.2244 50 -0.15 71
IV.ARRO.EHZ. 2020-02-25T09:36:46.37 0.3 undecidable manual S 178 18.0708 120 0.35 71
IV.NRCA.HHZ. 2020-02-25T09:36:45.01 0.1 undecidable manual P 71 30.747 50 -0.07 98
IV.CESI.HHZ. 2020-02-25T09:36:45.25 0.3 positive manual P 22 31.5462 50 0.06 74
IV.MOMA.HHZ. 2020-02-25T09:36:45.61 0.3 undecidable manual S 294 16.7721 121 0 76
IT.GNU.HGE. 2020-02-25T09:36:45.55 0.3 undecidable manual S 294 16.6722 121 -0.06 76
IV.GAVE.EHZ. 2020-02-25T09:36:44.26 0.1 undecidable manual S 116 12.4764 129 -0.14 100
IV.LNSS.HHZ. 2020-02-25T09:36:44.53 0.1 undecidable manual P 124 27.75 50 -0.08 98
IV.ARRO.EHZ. 2020-02-25T09:36:43.14 0.1 undecidable manual P 178 18.0708 120 0.17 98
IV.CESX.HHZ. 2020-02-25T09:36:43.16 0.3 undecidable manual P 223 20.3685 117 -0.21 73
IV.MOMA.HHZ. 2020-02-25T09:36:42.77 0.3 undecidable manual P 294 16.7721 121 0.03 76
IT.GNU.HGE. 2020-02-25T09:36:42.88 0.3 undecidable manual P 294 16.6722 121 0.14 74
IV.GAVE.EHZ. 2020-02-25T09:36:42.09 1.0 positive manual P 116 12.4764 129 0.05 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.2 0.0001913631 0.1024 AML other m 2020-02-25T09:36:45.42
IV.GAVE.EHN. ML:1.4 0.0002754279 0.1024 AML other m 2020-02-25T09:36:45.00
IV.GAVE.HNE. ML:1.2 0.00019584623500000002 0.1152 AML other m 2020-02-25T09:36:45.41
IV.MOMA.HHE. ML:1.1 0.00011860442500000001 0.1024 AML other m 2020-02-25T09:36:46.60
IV.MOMA.HHN. ML:1.0 0.00009417816 0.2176 AML other m 2020-02-25T09:36:47.03
IV.MOMA.HNE. ML:1.2 0.00012595776 0.1984 AML other m 2020-02-25T09:36:46.60
IV.MOMA.HNN. ML:1.0 0.00009515516999999999 0.1408 AML other m 2020-02-25T09:36:46.64
IV.ARRO.EHE. ML:0.8 0.00005211626 0.2624 AML other m 2020-02-25T09:36:47.38
IV.ARRO.EHN. ML:0.9 0.000072040035 0.16 AML other m 2020-02-25T09:36:47.21
IV.CESX.HHE. ML:1.0 0.00006358221999999999 0.2624 AML other m 2020-02-25T09:36:47.68
IV.CESX.HHN. ML:1.1 0.00008684837500000001 0.224 AML other m 2020-02-25T09:36:47.68
IV.LNSS.HHE. ML:1.3 0.00010911178 0.096 AML other m 2020-02-25T09:36:49.75
IV.LNSS.HHN. ML:1.4 0.00013036525 0.16 AML other m 2020-02-25T09:36:50.20
IV.NRCA.HHE. ML:1.0 0.000046864245 0.096 AML other m 2020-02-25T09:36:52.88
IV.NRCA.HHN. ML:1.0 0.00005034901 0.1408 AML other m 2020-02-25T09:36:50.22
IV.CESI.HHE. ML:0.9 0.00003956358 0.1216 AML other m 2020-02-25T09:36:50.07
IV.CESI.HHN. ML:1.0 0.000045031965 0.096 AML other m 2020-02-25T09:36:50.68
IV.FDMO.HHE. ML:0.9 0.000023161815000000003 0.1792 AML other m 2020-02-25T09:36:53.42
IV.FDMO.HHN. ML:0.9 0.00002353987 0.1344 AML other m 2020-02-25T09:36:53.85
IV.RM33.EHE. ML:0.9 0.000023345865 0.2944 AML other m 2020-02-25T09:36:55.10
IV.RM33.EHN. ML:0.8 0.00001894498 0.16 AML other m 2020-02-25T09:36:56.02
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