Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 29-11-2020 and time 01:29:54 (UTC) in region 6 km S Pietralunga (PG)

A magnitude ML 1.4 earthquake occured in region: 6 km S Pietralunga (PG), on

  • 29-11-2020 01:29:54 (UTC)
  • 29-11-2020 02:29:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.39, 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.

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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 6 2111 2111
Montone PG 9 1680 3791
Gubbio PG 12 32216 36007
Umbertide PG 13 16681 52688
Città di Castello PG 18 39913 92601
Cantiano PU 18 2245 94846
Scheggia e Pascelupo PG 19 1393 96239
Apecchio PU 19 1882 98121

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of Perugia (166134 inhabitants)
46 Km E of Arezzo (99543 inhabitants)
53 Km NW of Foligno (57155 inhabitants)
69 Km SW of Fano (60888 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
76 Km S of Rimini (147750 inhabitants)
85 Km S of Cesena (96758 inhabitants)
90 Km E of Siena (53903 inhabitants)
91 Km W of Ancona (100861 inhabitants)
94 Km N of Terni (111501 inhabitants)
98 Km SE of Forlì (117913 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
Reviewed
Rev100 		ML 1.4 2020-11-29
01:29:54		 43.39 12.44 8 2020-11-29
01:35:20		 Sala Sismica INGV-Roma 85076571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-29 01:29:54 ± 0.06
Latitude 43.39 ± 0.00
Longitude 12.44 ± 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 85076571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 302
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 341
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
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) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38221
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:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 85076571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-29 01:35:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-11-29T01:30:09.23 0.6 undecidable manual S 155 0.3822 50 0.13 46
IV.CAFI.HHZ. 2020-11-29T01:30:07.69 0.6 undecidable manual S 260 0.3471 50 -0.39 44
IV.PARC.HHZ. 2020-11-29T01:30:06.47 0.6 undecidable manual S 331 0.2968 103 0.11 47
IV.FRON.EHZ. 2020-11-29T01:30:04.39 0.6 undecidable manual S 58 0.2455 106 -0.07 48
IV.SSFR.HHZ. 2020-11-29T01:30:04.94 0.6 undecidable manual S 79 0.2545 106 0.14 47
IV.NARO.HHZ. 2020-11-29T01:30:04.17 0.6 undecidable manual S 25 0.2446 106 -0.26 46
IV.CAFI.HHZ. 2020-11-29T01:30:02.46 0.6 undecidable manual P 260 0.3471 50 0.07 47
IV.ARVD.HHZ. 2020-11-29T01:30:02.90 3.0 undecidable manual P -0.01 0
IV.ASSB.HHZ. 2020-11-29T01:30:02.80 0.1 undecidable manual P 155 0.3822 50 -0.17 91
IV.PARC.HHZ. 2020-11-29T01:30:01.50 0.1 undecidable manual P 331 0.2968 103 0.1 94
IV.APEC.HHZ. 2020-11-29T01:30:01.87 0.6 undecidable manual S 356 0.17 113 0.17 47
IV.NARO.HHZ. 2020-11-29T01:30:00.04 0.6 positive manual P 25 0.2446 106 -0.24 46
IV.ATMI.HHZ. 2020-11-29T01:30:00.60 0.6 undecidable manual S 246 0.1349 118 0.13 48
IV.FRON.EHZ. 2020-11-29T01:30:00.24 0.3 positive manual P 58 0.2455 106 -0.05 72
IV.SSFR.HHZ. 2020-11-29T01:30:00.66 0.3 positive manual P 79 0.2545 106 0.17 70
IV.APEC.HHZ. 2020-11-29T01:29:58.86 0.1 positive manual P 356 0.17 113 0.16 95
IV.ATPI.EHZ. 2020-11-29T01:29:58.05 0.6 undecidable manual S 338 0.0665 137 -0.31 47
IV.ATMI.HHZ. 2020-11-29T01:29:58.38 0.6 negative manual P 246 0.1349 118 0.39 45
IV.ATVO.HHZ. 2020-11-29T01:29:57.08 0.6 undecidable manual S 253 0.0234 162 -0.4 46
IV.ATVO.HHZ. 2020-11-29T01:29:56.30 0.1 undecidable manual P 253 0.0234 162 0.03 100
IV.ATPI.EHZ. 2020-11-29T01:29:56.85 1.0 undecidable manual P 338 0.0665 137 0.08 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHN. ML:1.5 0.0006225 0.36 AML other m 2020-11-29T01:29:58.36
IV.ATPI.HNN. ML:1.6 0.0006915 0.68 AML other m 2020-11-29T01:29:58.36
IV.ATPI.HNE. ML:1.5 0.000542 0.54 AML other m 2020-11-29T01:30:00.28
IV.ATPI.EHE. ML:1.5 0.000555 0.56 AML other m 2020-11-29T01:30:00.29
IV.APEC.HHN. ML:1.4 0.0001975 1.72 AML other m 2020-11-29T01:30:01.13
IV.FRON.EHE. ML:1.2 9.005E-5 0.42 AML other m 2020-11-29T01:30:04.63
IV.APEC.HHE. ML:1.2 0.00013215 0.42 AML other m 2020-11-29T01:30:04.46
IV.SSFR.HHE. ML:1.8 0.000313 0.18 AML other m 2020-11-29T01:30:05.69
IV.SSFR.HHN. ML:1.7 0.0002815 0.58 AML other m 2020-11-29T01:30:05.54
IV.FRON.EHN. ML:1.4 0.0001475 0.44 AML other m 2020-11-29T01:30:06.09
IV.ATMI.HHE. ML:1.2 0.0001475 0.34 AML other m 2020-11-29T01:30:07.51
IV.ATMI.HHN. ML:1.2 0.000166 0.38 AML other m 2020-11-29T01:30:08.19
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