Earthquake with magnitude of ML 0.8 on date 25-08-2019 and time 18:35:46 (UTC) in region 5 km S Spoleto (PG)

A magnitude ML 0.8 earthquake occured in region: 5 km S Spoleto (PG), on

  • 25-08-2019 18:35:46 (UTC)
  • 25-08-2019 20:35:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.69, 12.74 at 7 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 5 38218 38218
Scheggino PG 8 461 38679
Ferentillo TR 9 1913 40592
Sant'Anatolia di Narco PG 9 564 41156
Montefranco TR 11 1276 42432
Arrone TR 13 2763 45195
Vallo di Nera PG 13 364 45559
Campello sul Clitunno PG 15 2442 48001
Polino TR 15 233 48234
Castel Ritaldi PG 15 3278 51512
Acquasparta TR 16 4778 56290
Poggiodomo PG 16 117 56407
Terni TR 16 111501 167908
San Gemini TR 18 5018 172926
Monteleone di Spoleto PG 18 599 173525
Labro RI 19 374 173899
Massa Martana PG 20 3770 177669

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Terni (111501 inhabitants)
29 Km S of Foligno (57155 inhabitants)
54 Km SE of Perugia (166134 inhabitants)
60 Km NE of Viterbo (67173 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
79 Km W of Teramo (54892 inhabitants)
81 Km N of Tivoli (56533 inhabitants)
91 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 0.8 2019-08-25
18:35:46
42.69 12.74 7 2019-08-25
18:55:36
Sala Sismica INGV-Roma 71806211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-25 18:35:46 ± 0.21
Latitude 42.69 ± 0.01
Longitude 12.74 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71806211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 818
Semi-minor axis of confidence ellipse (meter) 732
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 336
Circular confidence region, given by single value of horizontal uncertainty (meter) 820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.42718
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 71806211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-25 18:55:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RORO.HHZ. 2019-08-25T18:37:17.09 3.0 undecidable manual Sn 1.85 0
IV.ZONE.HHZ. 2019-08-25T18:36:50.58 3.0 positive manual Pg 20.77 0
CR.STON.BHZ. 2019-08-25T18:36:45.32 3.0 undecidable manual Pg 22.469999 0
IT.FIE.HGZ. 2019-08-25T18:36:39.63 3.0 undecidable manual Sg 0.81 0
IV.AGLI.HHZ. 2019-08-25T18:36:39.42 3.0 undecidable manual Sn 2.43 0
GU.GSCL.HHZ. 2019-08-25T18:36:18.32 3.0 undecidable manual Pn 6.64 0
TV.SF04.EHZ. 2019-08-25T18:36:17.15 3.0 undecidable manual Sg -2.7 0
IV.PAOL.HHZ. 2019-08-25T18:36:10.85 3.0 undecidable manual Pg 17.84 0
GU.CARD.HHZ. 2019-08-25T18:36:08.41 3.0 positive manual Pn -0.2 0
IV.IMOL.HNZ. 2019-08-25T18:36:03.62 3.0 undecidable manual Pn -5.03 0
IV.FDMO.HHZ. 2019-08-25T18:36:02.51 0.3 undecidable manual S 37 0.4272 50 0.04 96
IV.BLLA.EHZ. 2019-08-25T18:36:02.08 3.0 positive manual Pn -3.42 0
IV.CESI.HHE. 2019-08-25T18:36:00.01 0.3 undecidable manual S 21 0.3336 101 0.45 90
IV.NRCA.HHZ. 2019-08-25T18:35:58.57 0.3 undecidable manual S 63 0.3094 102 -0.06 98
IV.MELA.HHZ. 2019-08-25T18:35:57.75 3.0 undecidable manual Pn 0.66 0
IV.LNSS.HHE. 2019-08-25T18:35:55.73 0.6 undecidable manual S 112 0.2401 105 -0.31 63
IV.FDMO.HHZ. 2019-08-25T18:35:55.73 0.6 undecidable manual P 37 0.4272 50 0.02 64
IV.CESI.HHE. 2019-08-25T18:35:54.33 0.3 undecidable manual P 21 0.3336 101 0.3 93
IV.NRCA.HHZ. 2019-08-25T18:35:52.96 0.3 undecidable manual P 63 0.3094 102 -0.53 88
IV.CESX.HHZ. 2019-08-25T18:35:52.81 0.6 undecidable manual S 233 0.1403 115 0.42 63
IV.GAVE.EHZ. 2019-08-25T18:35:51.67 0.3 undecidable manual S 91 0.1151 119 0.15 100
IV.LNSS.HHE. 2019-08-25T18:35:51.70 0.3 undecidable manual P 112 0.2401 105 -0.28 95
IV.MOMA.HHZ. 2019-08-25T18:35:51.45 0.6 undecidable manual S 312 0.1655 111 -1.83 30
IV.CESX.HHZ. 2019-08-25T18:35:50.33 1.0 positive manual P 233 0.1403 115 0.44 31
IV.MOMA.HHZ. 2019-08-25T18:35:50.43 0.6 undecidable manual P 312 0.1655 111 0.03 68
IV.GAVE.EHZ. 2019-08-25T18:35:49.71 0.6 negative manual P 91 0.1151 119 0.33 64
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:0.8 8.435E-5 1.02 AML other m 2019-08-25T18:35:52.13
IV.MOMA.HHE. ML:0.7 4.4E-5 1.34 AML other m 2019-08-25T18:35:52.01
IV.GAVE.EHN. ML:0.7 6.15E-5 0.14 AML other m 2019-08-25T18:35:53.29
IV.CESX.HHN. ML:0.5 2.865E-5 1.82 AML other m 2019-08-25T18:35:54.91
IV.MOMA.HHN. ML:0.7 3.9E-5 1.72 AML other m 2019-08-25T18:35:55.96
IV.CESX.HHE. ML:0.4 2.325E-5 0.54 AML other m 2019-08-25T18:35:55.69
IV.MELA.HHN. ML:2.9 0.000182 1.26 AML other m 2019-08-25T18:35:58.67
IV.MELA.HHE. ML:3.1 0.000325 0.1 AML other m 2019-08-25T18:35:58.61
TV.SF04.EHE. ML:1.1 1.315E-5 0.42 AML other m 2019-08-25T18:35:59.22
GU.CARD.HHN. ML:2.3 3.96E-5 0.12 AML other m 2019-08-25T18:36:08.76
GU.CARD.HHE. ML:2.3 4.06E-5 0.1 AML other m 2019-08-25T18:36:08.85
IV.ARVD.HHN. ML:0.9 1.21E-5 0.44 AML other m 2019-08-25T18:36:33.89
TV.SF04.EHN. ML:0.9 1.17E-5 0.42 AML other m 2019-08-25T18:36:40.41
IV.IMOL.HNN. ML:3.6 0.001155 0.06 AML other m 2019-08-25T18:36:52.00
IV.ARVD.HHE. ML:1.1 1.435E-5 0.06 AML other m 2019-08-25T18:36:52.43
IV.IMOL.HNE. ML:3.8 0.00177 0.06 AML other m 2019-08-25T18:36:52.84
IV.SSFR.HHN. ML:1.8 9.05E-5 0.42 AML other m 2019-08-25T18:36:56.54
IV.SSFR.HHE. ML:1.8 7.315E-5 1.16 AML other m 2019-08-25T18:37:00.15
GU.RORO.HHN. ML:2.3 1.178E-5 0.46 AML other m 2019-08-25T18:37:22.98
GU.RORO.HHE. ML:2.3 1.1065E-5 1.4 AML other m 2019-08-25T18:37:31.71
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