Earthquake with magnitude of ML 1.3 on date 11-07-2019 and time 00:01:42 (Italy) in region 2 km SW Massa Martana (PG)

A magnitude ML 1.3 earthquake occured in region: 2 km SW Massa Martana (PG), on

  • 10-07-2019 22:01:42 (UTC)
  • 11-07-2019 00:01:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.77, 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 2 3770 3770
Todi PG 8 16851 20621
Acquasparta TR 9 4778 25399
Giano dell'Umbria PG 10 3846 29245
Montecastrilli TR 13 5022 34267
Avigliano Umbro TR 14 2558 36825
Castel Ritaldi PG 15 3278 40103
Monte Castello di Vibio PG 15 1567 41670
Collazzone PG 15 3473 45143
Fratta Todina PG 15 1839 46982
Gualdo Cattaneo PG 16 6155 53137
San Gemini TR 17 5018 58155
Montefalco PG 19 5679 63834
Spoleto PG 19 38218 102052

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Terni (111501 inhabitants)
27 Km SW of Foligno (57155 inhabitants)
39 Km S of Perugia (166134 inhabitants)
51 Km NE of Viterbo (67173 inhabitants)
86 Km NW of L'Aquila (69753 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
95 Km NE of Civitavecchia (52991 inhabitants)
97 Km N of Roma (2864731 inhabitants)
99 Km W of Teramo (54892 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 1.3 2019-07-10
22:01:42
42.77 12.51 8 2019-07-10
22:05:28
Sala Sismica INGV-Roma 70451171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-10 22:01:42 ± 0.06
Latitude 42.77 ± 0.00
Longitude 12.51 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70451171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 324
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.05846
Epicentral distance of station farthest from the epicenter (degree) 0.50272
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 70451171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-10 22:05:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2019-07-10T22:02:00.52 0.6 undecidable manual S 57 0.5027 50 -0.01 47
IV.MGAB.HHZ. 2019-07-10T22:01:55.23 0.6 undecidable manual S 297 0.3238 50 -0.02 49
IV.FDMO.HHZ. 2019-07-10T22:01:53.01 1.0 positive manual P 57 0.5027 50 0.1 23
IV.ARRO.EHZ. 2019-07-10T22:01:53.01 0.6 undecidable manual S 135 0.2671 105 -0.13 48
IV.MGAB.HHZ. 2019-07-10T22:01:49.74 0.6 positive manual P 297 0.3238 50 -0.11 48
IV.CESX.HHZ. 2019-07-10T22:01:49.52 0.6 undecidable manual S 160 0.1691 113 -0.03 50
IV.ARRO.EHZ. 2019-07-10T22:01:48.74 0.6 positive manual P 135 0.2671 105 0.11 48
IV.CESX.HHZ. 2019-07-10T22:01:46.70 1.0 undecidable manual P 160 0.1691 113 0.14 25
IV.MOMA.HHZ. 2019-07-10T22:01:45.83 0.6 undecidable manual S 52 0.0585 140 -0.21 49
IV.MOMA.HHZ. 2019-07-10T22:01:44.68 0.1 negative manual P 52 0.0585 140 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.5 0.0006035 0.92 AML other m 2019-07-10T22:01:46.10
IV.MOMA.HNN. ML:1.5 0.0005785 0.92 AML other m 2019-07-10T22:01:46.10
IV.MOMA.HHE. ML:1.6 0.0007735 0.4 AML other m 2019-07-10T22:01:46.01
IV.MOMA.HNE. ML:1.6 0.000713 0.4 AML other m 2019-07-10T22:01:46.01
IV.CESX.HHN. ML:0.9 6.695E-5 0.74 AML other m 2019-07-10T22:01:50.74
IV.CESX.HHE. ML:0.8 5.395E-5 1.58 AML other m 2019-07-10T22:01:53.07
IV.FDMO.HHN. ML:1.2 3.845E-5 0.52 AML other m 2019-07-10T22:02:00.66
IV.FDMO.HHE. ML:1.1 3.0E-5 0.5 AML other m 2019-07-10T22:02:01.83
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