Earthquake with magnitude of ML 0.5 on date 09-08-2019 and time 03:03:55 (Italy) in region 4 km W Cerreto di Spoleto (PG)

A magnitude ML 0.5 earthquake occured in region: 4 km W Cerreto di Spoleto (PG), on

  • 09-08-2019 01:03:55 (UTC)
  • 09-08-2019 03:03:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.82, 12.87 at 11 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
Cerreto di Spoleto PG 4 1075 1075
Vallo di Nera PG 6 364 1439
Campello sul Clitunno PG 8 2442 3881
Sellano PG 9 1079 4960
Sant'Anatolia di Narco PG 10 564 5524
Trevi PG 12 8469 13993
Scheggino PG 13 461 14454
Poggiodomo PG 13 117 14571
Spoleto PG 14 38218 52789
Preci PG 15 724 53513
Castel Ritaldi PG 16 3278 56791
Cascia PG 17 3217 60008
Norcia PG 19 4957 64965
Montefalco PG 19 5679 70644

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SE of Foligno (57155 inhabitants)
34 Km NE of Terni (111501 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
71 Km W of Teramo (54892 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 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 0.5 2019-08-09
01:03:55
42.82 12.87 11 2019-08-09
01:54:06
Sala Sismica INGV-Roma 71287751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-09 01:03:55 ± 0.06
Latitude 42.82 ± 0.00
Longitude 12.87 ± 0.01
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71287751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 460
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 289
Circular confidence region, given by single value of horizontal uncertainty (meter) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.5342
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 71287751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-09 01:54:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-08-09T01:04:14.85 0.1 undecidable manual S 18 0.5342 90 0.65 80
IV.CESX.HHE. 2019-08-09T01:04:07.13 0.3 undecidable manual S 224 0.2977 90 -0.05 73
IV.EL6.EHZ. 2019-08-09T01:04:06.35 0.1 undecidable manual P 18 0.5342 90 -0.12 91
IV.FDMO.HHZ. 2019-08-09T01:04:06.22 0.1 undecidable manual S 37 0.2671 90 -0.05 97
IV.ASSB.HHZ. 2019-08-09T01:04:06.33 0.1 undecidable manual S 325 0.2689 90 0.01 98
IV.MOMA.HHE. 2019-08-09T01:04:05.08 0.3 undecidable manual S 265 0.2203 90 0.2 72
IV.LNSS.HHE. 2019-08-09T01:04:05.70 0.3 undecidable manual S 150 0.2527 90 -0.15 73
IT.MTCL.HGE. 2019-08-09T01:04:04.07 0.3 undecidable manual S 29 0.1961 90 -0.1 73
IV.CESI.HHE. 2019-08-09T01:04:03.96 0.3 undecidable manual S 8 0.1844 90 0.14 74
IV.NRCA.HHZ. 2019-08-09T01:04:03.51 0.1 undecidable manual S 86 0.1799 90 -0.18 97
IV.GAVE.EHZ. 2019-08-09T01:04:02.15 0.1 undecidable manual S 172 0.1313 90 -0.1 100
IV.CESX.HHE. 2019-08-09T01:04:02.30 0.3 undecidable manual P 224 0.2977 90 -0.12 72
IV.ASSB.HHZ. 2019-08-09T01:04:01.93 0.1 undecidable manual P 325 0.2689 90 0.01 99
IV.LNSS.HHE. 2019-08-09T01:04:01.72 0.3 undecidable manual P 150 0.2527 90 0.08 73
IV.ARRO.EHZ. 2019-08-09T01:04:01.67 3.0 undecidable manual P 0.35 0
IV.FDMO.HHZ. 2019-08-09T01:04:01.90 0.1 undecidable manual P 37 0.2671 90 0.01 99
IV.NRCA.HHZ. 2019-08-09T01:04:00.48 0.1 undecidable manual P 86 0.1799 90 0.08 99
IV.MOMA.HHE. 2019-08-09T01:04:00.29 0.3 undecidable manual P 265 0.2203 90 -0.8 60
IV.CESI.HHE. 2019-08-09T01:04:00.61 0.3 undecidable manual P 8 0.1844 90 0.13 74
IT.MTCL.HGE. 2019-08-09T01:04:00.71 0.3 undecidable manual P 29 0.1961 90 0.03 75
IV.GAVE.EHZ. 2019-08-09T01:03:59.80 0.1 undecidable manual P 172 0.1313 90 0.23 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1 9.560394E-5 0.26 AML other m 2019-08-09T01:04:03.38
IV.GAVE.EHN. ML:0.9 7.9514835E-5 0.08 AML other m 2019-08-09T01:04:02.54
IV.NRCA.HHE. ML:0.4 1.7822725E-5 0.16 AML other m 2019-08-09T01:04:04.37
IV.NRCA.HHN. ML:0.8 3.872054E-5 0.12 AML other m 2019-08-09T01:04:03.62
IV.ARRO.EHN. ML:0.3 1.201539E-5 0.26 AML other m 2019-08-09T01:04:06.78
IV.FDMO.HHE. ML:0.3 8.9389715E-6 0.3 AML other m 2019-08-09T01:04:07.96
IV.ASSB.HHE. ML:0.3 1.2443638E-5 0.16 AML other m 2019-08-09T01:04:07.24
IV.ASSB.HHN. ML:0.5 1.3170995E-5 0.12 AML other m 2019-08-09T01:04:07.12
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