Earthquake with magnitude of ML 1.5 on date 13-08-2019 and time 14:53:46 (Italy) in region 2 km NW Massa Martana (PG)

A magnitude ML 1.5 earthquake occured in region: 2 km NW Massa Martana (PG), on

  • 13-08-2019 12:53:46 (UTC)
  • 13-08-2019 14:53:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 12.51 at 8 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
Massa Martana PG 3 3770 3770
Giano dell'Umbria PG 7 3846 7616
Todi PG 8 16851 24467
Acquasparta TR 12 4778 29245
Collazzone PG 12 3473 32718
Gualdo Cattaneo PG 13 6155 38873
Fratta Todina PG 13 1839 40712
Monte Castello di Vibio PG 14 1567 42279
Castel Ritaldi PG 14 3278 45557
Montefalco PG 16 5679 51236
Montecastrilli TR 16 5022 56258
Avigliano Umbro TR 17 2558 58816
Bevagna PG 18 5081 63897
Marsciano PG 19 18902 82799

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Foligno (57155 inhabitants)
28 Km NW of Terni (111501 inhabitants)
36 Km S of Perugia (166134 inhabitants)
53 Km NE of Viterbo (67173 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
98 Km NE of Civitavecchia (52991 inhabitants)
99 Km W of Teramo (54892 inhabitants)
100 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 1.5 2019-08-13
12:53:46
42.8 12.51 8 2019-08-13
13:00:04
Sala Sismica INGV-Roma 71454321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-13 12:53:46 ± 0.1
Latitude 42.80 ± 0.00
Longitude 12.51 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71454321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 508
Semi-minor axis of confidence ellipse (meter) 395
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.04587
Epicentral distance of station farthest from the epicenter (degree) 0.62953
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 71454321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-13 13:00:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2019-08-13T12:54:09.00 0.3 undecidable manual S 105 0.6295 50 0.43 62
IV.MC2.EHZ. 2019-08-13T12:54:05.54 0.6 undecidable manual S 77 0.5117 50 0.45 42
IV.FDMO.HHZ. 2019-08-13T12:54:04.45 0.3 undecidable manual S 60 0.4874 50 0.09 69
IV.NRCA.HHZ. 2019-08-13T12:54:03.15 0.3 undecidable manual S 85 0.4461 50 0.01 71
IV.MGAB.HHZ. 2019-08-13T12:53:59.55 0.3 undecidable manual S 292 0.313 103 0.44 66
IV.SMA1.EHZ. 2019-08-13T12:53:59.39 1.0 negative manual P 105 0.6295 50 0.04 23
IV.ARRO.EHZ. 2019-08-13T12:53:58.85 0.3 undecidable manual S 139 0.2878 104 0.69 61
IV.GAVE.EHZ. 2019-08-13T12:53:58.76 0.3 undecidable manual S 110 0.3013 103 0.07 72
IV.MC2.EHZ. 2019-08-13T12:53:57.11 1.0 negative manual P 77 0.5117 50 -0.23 22
IV.ASSB.HHZ. 2019-08-13T12:53:57.85 0.3 undecidable manual S 24 0.2698 105 0.34 68
IV.FDMO.HHZ. 2019-08-13T12:53:56.48 0.1 undecidable manual P 60 0.4874 50 -0.44 85
IV.SACS.HHZ. 2019-08-13T12:53:56.14 1.0 undecidable manual P 277 0.4416 50 0 24
IV.NRCA.HHZ. 2019-08-13T12:53:55.78 0.1 negative manual P 85 0.4461 50 -0.43 86
IV.CESX.HHZ. 2019-08-13T12:53:54.67 0.1 undecidable manual S 163 0.1961 110 -0.11 97
IV.MGAB.HHZ. 2019-08-13T12:53:53.83 0.3 positive manual P 292 0.313 103 -0.06 72
IV.ARRO.EHZ. 2019-08-13T12:53:53.05 1.0 positive manual P 139 0.2878 104 -0.29 23
IV.GAVE.EHZ. 2019-08-13T12:53:53.44 0.6 negative manual P 110 0.3013 103 -0.2 47
IV.ASSB.HHZ. 2019-08-13T12:53:52.75 0.1 positive manual P 24 0.2698 105 -0.22 94
IV.CESX.HHZ. 2019-08-13T12:53:51.20 0.1 undecidable manual P 163 0.1961 110 -0.19 96
IV.MOMA.HHZ. 2019-08-13T12:53:49.87 0.1 undecidable manual S 80 0.0459 147 -0.14 99
IV.MOMA.HHZ. 2019-08-13T12:53:48.74 0.1 undecidable manual P 80 0.0459 147 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.8 0.0005015 0.48 AML other m 2019-08-13T12:53:55.95
IV.CESX.HHE. ML:1.8 0.0004865 1.72 AML other m 2019-08-13T12:53:56.93
IV.ASSB.HHN. ML:1.3 8.995E-5 0.7 AML other m 2019-08-13T12:53:58.40
IV.ARRO.EHE. ML:1.3 0.00010105 0.78 AML other m 2019-08-13T12:53:59.72
IV.GAVE.EHN. ML:1.5 0.0001435 0.9 AML other m 2019-08-13T12:54:00.63
IV.ARRO.EHN. ML:1.4 0.0001325 0.9 AML other m 2019-08-13T12:54:00.41
IV.MGAB.HHE. ML:1.4 0.00010295 0.38 AML other m 2019-08-13T12:54:00.89
IV.GAVE.EHE. ML:1.6 0.0001715 0.92 AML other m 2019-08-13T12:54:00.97
IV.MGAB.HNE. ML:1.4 0.000106 1.2 AML other m 2019-08-13T12:54:01.82
IV.ASSB.HHE. ML:1.2 8.075E-5 0.22 AML other m 2019-08-13T12:54:01.65
IV.MGAB.HHN. ML:1.4 9.89E-5 0.4 AML other m 2019-08-13T12:54:01.64
IV.MGAB.HNN. ML:1.4 9.79E-5 0.2 AML other m 2019-08-13T12:54:03.48
IV.NRCA.HHE. ML:1.7 0.000125 0.7 AML other m 2019-08-13T12:54:04.79
IV.NRCA.HHN. ML:1.7 0.000131 0.12 AML other m 2019-08-13T12:54:05.45
IV.SMA1.EHE. ML:1.5 5.715E-5 0.42 AML other m 2019-08-13T12:54:09.46
IV.SMA1.EHN. ML:1.5 4.845E-5 1.48 AML other m 2019-08-13T12:54:16.94
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