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) 42.74, 12.76 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.

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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.1 2020-02-25
09:36:38
42.74 12.76 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 42.74 ± 0.00
Longitude 12.76 ± 0.00
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
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 Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-02-25T09:36:53.06 0.6 undecidable manual S 39 0.3804 50 0.32 46
IV.RM33.EHZ. 2020-02-25T09:36:53.87 0.6 undecidable manual S 125 0.4092 50 0.3 46
IV.NRCA.HHZ. 2020-02-25T09:36:49.73 0.3 undecidable manual S 71 0.277 50 0.06 74
IV.CESI.HHZ. 2020-02-25T09:36:49.90 0.1 undecidable manual S 22 0.2842 50 0.03 99
IV.LNSS.HHZ. 2020-02-25T09:36:48.77 0.3 undecidable manual S 124 0.25 50 -0.09 74
IV.RM33.EHZ. 2020-02-25T09:36:47.01 0.3 undecidable manual P 125 0.4092 50 -0.32 68
IV.CESX.HHZ. 2020-02-25T09:36:46.59 0.3 undecidable manual S 223 0.1835 117 -0.12 74
IV.FDMO.HHZ. 2020-02-25T09:36:46.70 0.3 undecidable manual P 39 0.3804 50 -0.15 71
IV.ARRO.EHZ. 2020-02-25T09:36:46.37 0.3 undecidable manual S 178 0.1628 120 0.35 71
IV.NRCA.HHZ. 2020-02-25T09:36:45.01 0.1 undecidable manual P 71 0.277 50 -0.07 98
IV.CESI.HHZ. 2020-02-25T09:36:45.25 0.3 positive manual P 22 0.2842 50 0.06 74
IV.MOMA.HHZ. 2020-02-25T09:36:45.61 0.3 undecidable manual S 294 0.1511 121 0 76
IT.GNU.HGE. 2020-02-25T09:36:45.55 0.3 undecidable manual S 294 0.1502 121 -0.06 76
IV.GAVE.EHZ. 2020-02-25T09:36:44.26 0.1 undecidable manual S 116 0.1124 129 -0.14 100
IV.LNSS.HHZ. 2020-02-25T09:36:44.53 0.1 undecidable manual P 124 0.25 50 -0.08 98
IV.ARRO.EHZ. 2020-02-25T09:36:43.14 0.1 undecidable manual P 178 0.1628 120 0.17 98
IV.CESX.HHZ. 2020-02-25T09:36:43.16 0.3 undecidable manual P 223 0.1835 117 -0.21 73
IV.MOMA.HHZ. 2020-02-25T09:36:42.77 0.3 undecidable manual P 294 0.1511 121 0.03 76
IT.GNU.HGE. 2020-02-25T09:36:42.88 0.3 undecidable manual P 294 0.1502 121 0.14 74
IV.GAVE.EHZ. 2020-02-25T09:36:42.09 1.0 positive manual P 116 0.1124 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 0.000195846235 0.1152 AML other m 2020-02-25T09:36:45.41
IV.MOMA.HHE. ML:1.1 0.000118604425 0.1024 AML other m 2020-02-25T09:36:46.60
IV.MOMA.HHN. ML:1 9.417816E-5 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 9.515517E-5 0.1408 AML other m 2020-02-25T09:36:46.64
IV.ARRO.EHE. ML:0.8 5.211626E-5 0.2624 AML other m 2020-02-25T09:36:47.38
IV.ARRO.EHN. ML:0.9 7.2040035E-5 0.16 AML other m 2020-02-25T09:36:47.21
IV.CESX.HHE. ML:1 6.358222E-5 0.2624 AML other m 2020-02-25T09:36:47.68
IV.CESX.HHN. ML:1.1 8.6848375E-5 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 4.6864245E-5 0.096 AML other m 2020-02-25T09:36:52.88
IV.NRCA.HHN. ML:1 5.034901E-5 0.1408 AML other m 2020-02-25T09:36:50.22
IV.CESI.HHE. ML:0.9 3.956358E-5 0.1216 AML other m 2020-02-25T09:36:50.07
IV.CESI.HHN. ML:1 4.5031965E-5 0.096 AML other m 2020-02-25T09:36:50.68
IV.FDMO.HHE. ML:0.9 2.3161815E-5 0.1792 AML other m 2020-02-25T09:36:53.42
IV.FDMO.HHN. ML:0.9 2.353987E-5 0.1344 AML other m 2020-02-25T09:36:53.85
IV.RM33.EHE. ML:0.9 2.3345865E-5 0.2944 AML other m 2020-02-25T09:36:55.10
IV.RM33.EHN. ML:0.8 1.894498E-5 0.16 AML other m 2020-02-25T09:36:56.02
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download