Earthquake with magnitude of ML 1.6 on date 20-08-2019 and time 23:09:57 (Italy) in region 3 km NW Ferentillo (TR)

A magnitude ML 1.6 earthquake occured in region: 3 km NW Ferentillo (TR), on

  • 20-08-2019 21:09:57 (UTC)
  • 20-08-2019 23:09:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.64, 12.77 at 9 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
Ferentillo TR 3 1913 1913
Montefranco TR 5 1276 3189
Arrone TR 7 2763 5952
Polino TR 9 233 6185
Scheggino PG 10 461 6646
Spoleto PG 11 38218 44864
Sant'Anatolia di Narco PG 12 564 45428
Labro RI 13 374 45802
Terni TR 13 111501 157303
Morro Reatino RI 14 373 157676
Monteleone di Spoleto PG 15 599 158275
Rivodutri RI 16 1253 159528
Poggiodomo PG 16 117 159645
Colli sul Velino RI 16 533 160178
Vallo di Nera PG 16 364 160542
Stroncone TR 18 4917 165459
San Gemini TR 18 5018 170477
Poggio Bustone RI 18 2055 172532
Leonessa RI 19 2435 174967
Acquasparta TR 19 4778 179745
Campello sul Clitunno PG 20 2442 182187

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NE of Terni (111501 inhabitants)
35 Km S of Foligno (57155 inhabitants)
60 Km E of Viterbo (67173 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
71 Km N of Guidonia Montecelio (88673 inhabitants)
75 Km N of Tivoli (56533 inhabitants)
77 Km W of Teramo (54892 inhabitants)
86 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 1.6 2019-08-20
21:09:57
42.64 12.77 9 2019-08-20
21:19:16
Sala Sismica INGV-Roma 71663381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 21:09:57 ± 0.06
Latitude 42.64 ± 0.00
Longitude 12.77 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71663381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 355
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 232
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.72935
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 31
Type of magnitude ML
Reference to an origin 71663381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 21:19:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-08-20T21:10:23.32 0.3 undecidable manual S 20 0.7293 50 0.97 49
IV.PE3.EHZ. 2019-08-20T21:10:15.37 3.0 undecidable manual P -2.9 0
IV.MMO1.EHZ. 2019-08-20T21:10:15.04 0.1 undecidable manual S 58 0.4847 50 -0.07 92
IV.SRES.HHE. 2019-08-20T21:10:14.55 0.3 undecidable manual S 205 0.447 50 0.56 62
IV.FDMO.HHZ. 2019-08-20T21:10:14.24 0.1 undecidable manual S 31 0.4587 50 -0.1 92
IV.SMA1.EHZ. 2019-08-20T21:10:13.38 0.1 undecidable manual S 91 0.4182 50 0.25 90
IV.FIAM.HHZ. 2019-08-20T21:10:13.74 0.3 undecidable manual S 145 0.4551 50 -0.47 64
IV.EL6.EHZ. 2019-08-20T21:10:12.17 0.3 undecidable manual P 20 0.7293 50 0.21 64
IV.MC2.EHZ. 2019-08-20T21:10:12.98 0.3 undecidable manual S 49 0.4101 50 0.07 70
IV.ASSB.HHZ. 2019-08-20T21:10:12.69 0.3 undecidable manual S 349 0.4083 50 -0.14 69
IV.CESI.HHE. 2019-08-20T21:10:11.72 0.1 undecidable manual S 16 0.3759 50 -0.17 92
IV.FEMA.HNE. 2019-08-20T21:10:11.88 0.3 undecidable manual S 33 0.3813 50 -0.16 69
IV.RM33.EHZ. 2019-08-20T21:10:10.85 0.1 undecidable manual S 112 0.3552 50 -0.43 88
IV.MGAB.HHZ. 2019-08-20T21:10:09.28 0.3 undecidable manual P 300 0.5513 50 0.37 64
IV.MMO1.EHZ. 2019-08-20T21:10:07.84 0.3 undecidable manual P 58 0.4847 50 0.07 69
IV.SRES.HHE. 2019-08-20T21:10:07.64 0.3 undecidable manual P 205 0.447 50 0.51 63
IV.FDMO.HHZ. 2019-08-20T21:10:07.33 0.3 undecidable manual P 31 0.4587 50 -0.01 71
IV.FEMA.HNE. 2019-08-20T21:10:06.64 0.3 undecidable manual P 33 0.3813 50 0.63 61
IV.MOMA.HHZ. 2019-08-20T21:10:06.52 0.1 undecidable manual S 318 0.2167 110 -0.12 96
IV.ASSB.HHZ. 2019-08-20T21:10:06.17 0.1 undecidable manual P 349 0.4083 50 -0.29 90
IV.LNSS.HHZ. 2019-08-20T21:10:06.02 0.3 undecidable manual S 101 0.205 111 -0.2 71
IV.SMA1.EHZ. 2019-08-20T21:10:06.68 0.3 undecidable manual P 91 0.4182 50 0.04 71
IV.MC2.EHZ. 2019-08-20T21:10:06.88 0.3 undecidable manual P 49 0.4101 50 0.38 66
IV.FIAM.HHZ. 2019-08-20T21:10:06.81 0.1 undecidable manual P 145 0.4551 50 -0.45 86
IT.GNU.HGZ. 2019-08-20T21:10:06.57 0.3 undecidable manual S 318 0.2167 110 -0.07 73
IV.RM33.EHZ. 2019-08-20T21:10:05.22 0.1 undecidable manual P 112 0.3552 50 -0.35 89
IV.CESI.HHE. 2019-08-20T21:10:05.74 0.1 undecidable manual P 16 0.3759 50 -0.18 92
IV.CESX.HHZ. 2019-08-20T21:10:03.40 0.1 undecidable manual S 256 0.1367 120 -0.43 92
IT.GNU.HGZ. 2019-08-20T21:10:02.87 0.1 undecidable manual P 318 0.2167 110 -0.02 98
IV.MOMA.HHZ. 2019-08-20T21:10:02.67 0.1 undecidable manual P 318 0.2167 110 -0.22 94
IV.GAVE.EHZ. 2019-08-20T21:10:02.95 0.3 undecidable manual S 62 0.1061 127 0.09 74
IV.LNSS.HHZ. 2019-08-20T21:10:02.68 0.1 undecidable manual P 101 0.205 111 0.03 98
IV.CESX.HHZ. 2019-08-20T21:10:01.28 0.1 undecidable manual P 256 0.1367 120 0.01 100
IV.ARRO.EHZ. 2019-08-20T21:10:01.84 0.1 undecidable manual S 181 0.063 141 0.2 98
IV.GAVE.EHZ. 2019-08-20T21:10:00.83 0.1 undecidable manual P 62 0.1061 127 0.12 98
IV.ARRO.EHZ. 2019-08-20T21:10:00.36 0.1 negative manual P 181 0.063 141 0.35 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2 0.00183 0.16 AML other m 2019-08-20T21:10:02.12
IV.ARRO.EHN. ML:1.7 0.00089 0.16 AML other m 2019-08-20T21:10:02.27
IV.GAVE.HNE. ML:1.8 0.0008115 0.6 AML other m 2019-08-20T21:10:04.81
IV.GAVE.EHE. ML:1.8 0.0007665 1.5 AML other m 2019-08-20T21:10:04.82
IV.GAVE.EHN. ML:1.6 0.000555 1.18 AML other m 2019-08-20T21:10:05.84
IV.GAVE.HNN. ML:1.4 0.000332 1.16 AML other m 2019-08-20T21:10:05.83
IV.CESX.HHN. ML:1.8 0.0006465 0.36 AML other m 2019-08-20T21:10:05.39
IV.CESX.HHE. ML:1.7 0.000456 0.42 AML other m 2019-08-20T21:10:05.69
IV.LNSS.HHE. ML:1.8 0.0004545 0.82 AML other m 2019-08-20T21:10:06.87
IV.LNSS.HHN. ML:1.7 0.000331 0.2 AML other m 2019-08-20T21:10:06.71
IV.MOMA.HHN. ML:1.4 0.0001685 0.36 AML other m 2019-08-20T21:10:07.37
IV.MOMA.HHE. ML:1.4 0.0001555 0.66 AML other m 2019-08-20T21:10:08.06
IV.RM33.EHN. ML:1.8 0.000215 1.08 AML other m 2019-08-20T21:10:11.05
IV.RM33.EHE. ML:1.7 0.000175 1.68 AML other m 2019-08-20T21:10:12.10
IV.ASSB.HHN. ML:1.2 4.815E-5 0.86 AML other m 2019-08-20T21:10:13.05
IV.SMA1.EHE. ML:1.8 0.0001905 0.26 AML other m 2019-08-20T21:10:13.68
IV.ASSB.HHE. ML:1.2 4.61E-5 0.5 AML other m 2019-08-20T21:10:13.99
IV.FDMO.HHE. ML:1.5 8.6E-5 0.98 AML other m 2019-08-20T21:10:14.57
IV.FIAM.HHN. ML:0.8 1.665E-5 1.46 AML other m 2019-08-20T21:10:15.02
IV.FDMO.HHN. ML:1.4 5.91E-5 0.56 AML other m 2019-08-20T21:10:15.23
IV.SMA1.EHN. ML:1.6 0.000121 0.52 AML other m 2019-08-20T21:10:15.96
IV.FIAM.HHE. ML:0.8 1.535E-5 0.72 AML other m 2019-08-20T21:10:18.39
IV.MGAB.HHN. ML:1.2 3.31E-5 0.2 AML other m 2019-08-20T21:10:19.15
IV.MGAB.HHE. ML:1.4 4.6E-5 1.64 AML other m 2019-08-20T21:10:19.00
IV.MOMA.HNE. ML:1.4 0.00013916455 0.192 AML other m 2019-08-20T21:10:10.14
IV.LNSS.HNE. ML:1.7 0.00034849775 0.1664 AML other m 2019-08-20T21:10:06.65
IV.LNSS.HNN. ML:1.6 0.0002940765 0.1152 AML other m 2019-08-20T21:10:06.71
IV.RM33.HNE. ML:1.7 0.00017071205 0.1536 AML other m 2019-08-20T21:10:12.10
IV.RM33.HNN. ML:1.8 0.0002177713 0.3072 AML other m 2019-08-20T21:10:11.74
IV.EL6.EHE. ML:1.7 7.018434E-5 0.1664 AML other m 2019-08-20T21:10:24.33
IV.EL6.EHN. ML:1.6 5.291778E-5 0.32 AML other m 2019-08-20T21:10:24.55
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