INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.4 on date 07-02-2019 and time 13:16:21 (Italy) in region 2 km S Pietralunga (PG)

A magnitude ML 0.4 earthquake occured in region: 2 km S Pietralunga (PG), on

  • 07-02-2019 12:16:21 (UTC)
  • 07-02-2019 13:16:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.42, 12.44 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
Pietralunga PG 2 2111 2111
Montone PG 11 1680 3791
Gubbio PG 14 32216 36007
Apecchio PU 15 1882 37889
Umbertide PG 16 16681 54570
Cantiano PU 16 2245 56815
Città di Castello PG 17 39913 96728
Scheggia e Pascelupo PG 19 1393 98121
Piobbico PU 19 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
56 Km NW of Foligno (57155 inhabitants)
66 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
81 Km S of Cesena (96758 inhabitants)
90 Km W of Ancona (100861 inhabitants)
90 Km E of Siena (53903 inhabitants)
95 Km SE of Forlì (117913 inhabitants)
97 Km N of Terni (111501 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 0.4 2019-02-07
12:16:21
43.42 12.44 8 2019-02-07
12:27:38
Sala Sismica INGV-Roma 65311131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-07 12:16:21 ± 0.11
Latitude 43.42 ± 0.00
Longitude 12.44 ± 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 65311131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 477
Semi-minor axis of confidence ellipse (meter) 268
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 285
Circular confidence region, given by single value of horizontal uncertainty (meter) 480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.06
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.1313
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 3
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 65311131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-07 12:27:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2019-02-07T12:16:41.59 3.0 undecidable manual Pn 1.01 0
IV.PIEI.HHZ. 2019-02-07T12:16:26.97 0.3 undecidable manual S 31 0.1313 118 0.03 74
IV.NARO.HHZ. 2019-02-07T12:16:25.57 3.0 negative manual P 0.02 0
IV.PIEI.HHZ. 2019-02-07T12:16:24.44 0.6 positive manual P 31 0.1313 118 -0.07 49
IV.ATPI.EHZ. 2019-02-07T12:16:24.33 0.1 undecidable manual S 314 0.0396 151 0.01 100
IV.ATVO.HHZ. 2019-02-07T12:16:24.45 0.1 undecidable manual S 212 0.0477 146 -0.03 99
IV.ATVO.HHZ. 2019-02-07T12:16:23.15 0.1 undecidable manual P 212 0.0477 146 0.06 99
IV.ATPI.EHZ. 2019-02-07T12:16:22.97 0.1 undecidable manual P 314 0.0396 151 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:0 3.0059115E-5 0.2176 AML other m 2019-02-07T12:16:24.47
IV.ATPI.EHN. ML:0 2.65482295E-5 0.1984 AML other m 2019-02-07T12:16:27.72
IV.ATVO.HHE. ML:0 2.0749685E-5 0.1984 AML other m 2019-02-07T12:16:27.31
IV.PIEI.HHE. ML:0.4 2.9854395E-5 0.16 AML other m 2019-02-07T12:16:30.17
IV.PIEI.HHN. ML:0.3 2.087285E-5 0.256 AML other m 2019-02-07T12:16:27.32
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